Publikationen des IPB

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477 Publikationen / Publications IPB

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Reim, S., Rohr, A.D., Winkelmann, T., Weiß, S., Liu, B., Beerhues, L., Schmitz, M., Hanke, M.V., Flachowsky, H. (2020)
Genes involved in stress response and especially in phytoalexin biosynthesis are up-regulated in four Malus genotypes in response to apple replant disease
Front. Plant Sci. in press:

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Saini, S.S., Gaid, M., Sircar, D. (2020)
Benzoate‑CoA ligase contributes to the biosynthesis of biphenyl phytoalexins in elicitor‑treated pear cell cultures
Plant Cell Reports 39:207-215

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Gaid, M., Singh, P., El-Awaad, I., Nagia, M., Beerhues, L. (2020)
Biotechnological production of prenylated xanthones for pharmaceutical use
Pharmaceutical Biocatalysis: Chemoenzymatic Synthesis of Active Pharmaceutical Ingredients ISBN 987-981-4800-80-8 (Hardcover), 987-0-429-35311-6 (eBook):in press

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Meier, K., Ehbrecht, M.D., Wittstock, U. (2019)
Glucosinolate content in dormant and germinating Arabidopsis thaliana seeds is affected by non-functional alleles of classical myrosinase and nitrile-specifier protein genes
Frontiers in Plant Science 10:Article 1549

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Glindemann, C.P., Backenköhler, A., Strieker, M., Wittstock, U., Klahn, P. (2019)
Synthesis and biochemical evaluation of an artificial, fluorescent glucosinolate (GSL)
ChemBioChem 20:1-6

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Eisenschmidt-Bönn, D., Schneegans, N., Backenköhler, A., Wittstock, U., Brandt, W. (2019)
Structural diversification during glucosinolate breakdown: Mechanisms of thiocyanate, epithionitrile and simple nitrile formation
Plant J. 99:329-343

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Chmit,M.S., Wahrig,B., Beuerle,T. (2019)
Quantitative and qualitative analysis of pyrrolizidine alkaloids in liqueurs, elixirs and herbal juices
Fitoterapia 136:104172

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Shakya, P., Marslin, G., Siram, K., Beerhues, L., Franklin, G. (2019)
Elicitation as a tool to improve the profiles of high value secondary metabolites and pharmacological properties of Hypericum perforatum
J. Pharm. Pharmacol. 71:70-82

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Sarkate, A., Saini, S.S., Gaid, M., Teotia, D., Mir, J.I., Agrawa, P.K., Beerhues, L., Sircar, D. (2019)
Molecular cloning and functional analysis of a biphenyl phytoalexin‑specific O‑methyltransferase from apple cell suspension cultures
Planta 249:677-691

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Ernst,L., Langer,N., Bockelmann,A., Salkhordeh,E., Beuerle,T. (2019)
Identification and quantification of synthetic cannabinoids in ‛spice-like’ herbal mixtures: Update of the German situation in summer 2018
Forensic Science International 294:96-102

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Nagia, M., Gaid, M., Biedermann, E., Fiesel, T., El-Awaad, I., Hänsch, R., Wittstock, U., Beerhues, L. (2019)
Sequential regiospecific gem-diprenylation of tetrahydroxyxanthone by prenyltransferases from Hypericum sp.
New Phytologist 222:318-334

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Tipke,I., Bücker,L., Middelstaedt,J., Winterhalter,P., Lubienski,M., Beuerle,T. (2019)
HILIC HPLC-ESI-MS/MS identification and quantification of the alkaloids from the genus Equisetum
Phytochemical Analysis 30:669–678

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Gaid, M., Grosch, J.H., Möller, S., Beerhues, L., Krull, R. (2019)
Toward enhanced hyperforin production in St. John’s wort root cultures
Engineering in Life Sciences 19:916-930

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Tomar,V., Beuerle,T., Sircar, D. (2019)
A validated HPTLC method for the simultaneous quantifications of three Phenolic acids and three withanolides from Withania somnifera plants and its herbal products
Journal of Chromatography B 1124:154-160

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Hartke,J., Sprenger,P.P., Sahm,J., Winterberg,H., Orivel,J., Baur,H., Beuerle,T., Schmitt,T., Feldmeyer,B., Menzel,F. (2019)
Cuticular hydrocarbons as potential mediators of cryptic species divergence in a mutualistic ant association
Ecology and Evolution 9:9160-9176

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Teotia, D., Gaid, M., Saini, S., Verma, A., Yennamalli, R., Khare, S., Ambatipudi, K., Mir, J., Beuerle, T., Hänsch, R., Roy, P., Agrawal, P., Beerhues, L., Sircar, D. (2019)
Cinnamate:CoA-ligase is involved in benzoate-derived biphenyl phytoalexin biosynthesis in Malus × domestica Golden Delicious cell cultures
Plant Journal 100:1176-1192

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Baumann, A., Yim, B., Grunewaldt-Stöcker, G., Liu, B., Beerhues, L., Sapp, M., Nesme, J., Sørensen, S.J., Smalla, K., Winkelmann T. (2019)
Rose replant disease: Detailed analyses of plant reactions, root endophytes and rhizosphere microbial communities
Acta Horticulturae in press:

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Liu, B., Gaid, M., Chizzali, C., Khalil, M.N.A., Sircar, D., Reckwell, D., Beuerle, T., Richter, K., Hänsch, R., Flachowsky, H., Beerhues, L. (2019)
Biphenyls and dibenzofurans are the phytoalexins of apple
Acta Horticulturae 1261:259-264

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Saini SS, Teotia D, Gaid M, Sircar D (2019)
A new enzymatic activity from elicitor-treated pear cell cultures converting trans-cinnamic acid to benzaldehyde.
Physiologia Plantarum 167:64-74

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Gaid, M., Füller, J., Müller-Goymann, C. (2019)
The petroleum ether extract from Hypericum perforatum root cultures exhibits potent antiproliferative activity in human keratinocytes and fibroblasts
Planta Medica 85:591-598

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Backenköhler, A., Eisenschmidt, D., Schneegans, N., Strieker, M., Brandt, W., Wittstock, U. (2018)
Iron is a centrally bound cofactor of specifier proteins involved in glucosinolate breakdown
PLOS ONE 13:e0205755

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Steiner, A.-M., Busching, C., Vogel, H., Wittstock, U. (2018)
Molecular identification and characterization of rhodaneses from the insect herbivore Pieris rapae
Scientific Reports 8:10819, doi:10.1038/s41598-018-29148-5

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Elgahme, N.F.A., Wittstock, U. (2018)
Quantitative profiling of polyacetylenes in tissue cultures and plant parts of three species of the Asteraceae
Plant Cell, Tissue, and Organ Culture (PCTOC) 134:251-265

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Kwiecien, J., Smolin, J., Beerhues, L., Ekiert, H. (2018)
The impact of media composition on production of flavonoids in agitated shoot cultures of the three Hypericum perforatum L. cultivars Elixir, Helos and Topas
In Vitro Cell. Dev. Biol. Plant 54:332-340

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Haas, P., Gaid, M., Zarinwall, A., Beerhues, L., Scholl, S. (2018)
Downstream processing of hyperforin from Hypericum perforatum root cultures
Eur. J. Pharm. Biopharm. 126:104-107

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Gaid, M., Biedermann, E., Füller, J., Haas, P., Behrends, S., Krull, R., Scholl, S., Wittstock, U., Müller-Goymann, C., Beerhues, L. (2018)
Biotechnological production of hyperforin for pharmaceutical formulation
Eur. J. Pharm. Biopharm. 126:10-26

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Sarkate, A., Saini, S.S., Teotia, D., Gaid, M., Mir, J.I., Roy, P., Agrawal, P.K., Sircar, D. (2018)
Comparative metabolomics of scab-resistant and susceptible apple cell cultures in response to scab fungus elicitor treatment
Scientific Reports 8:17844

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Kanfra, X., Liu, B., Beerhues, L., Sorensen, S., Heuer, H. (2018)
Free-living nematodes together with associated microbes play an essential role in apple replant disease
Frontiers in Plant Science 9:1666

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Gottschalk,C., Huckauf,A., Dübecke,A., Kaltner,F., Zimmermann,M., Rahaus,I., Beuerle,T. (2018)
Uncertainties in the determination of pyrrolizidine alkaloid levels in naturally contaminated honeys and comparison of results obtained by different analytical approaches
Food Additives & Contaminants: Part A 35:1366-1383

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Tocci, N., Gaid, M., Kaftan, F., Belkheir, A.K., Belhadj, I., Liu, B., Svatoš, A., Hänsch, R., Pasqua, G., Beerhues, L. (2018)
Exodermis and endodermis are the sites of xanthone biosynthesis in Hypericum perforatum roots
New Phytologist 217:1099-1112

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Füller, J., Kellner, T., Gaid, M., Beerhues, L., Müller-Goymann, CC. (2018)
Stabilization of hyperforin dicyclohexylammonium salt with dissolved albumin and albumin nanoparticles for studying hyperforin effects on 2D cultivation of keratinocytes in vitro
Eur. J. Pharm. Biopharm. 126:115-122

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Herfurth, A.-M., Ohlen, M.v., Wittstock, U. (2017)
β-Cyanoalanine synthases and their possible role in Pierid host plant adaptation
Insects 8:62, doi:10.3390/insects8020062

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Ohlen, M. v., Herfurth, A.-M., Wittstock, U. (2017)
Herbivore adaptations to plant cyanide defenses
In: Herbviores (Shields, V. (ed.)), Intech Open, Rijeka (Croatia) :29-57, http://dx.doi.org/10.5772/66277

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Saini, S.S., Teotia, D., Gaid, M., Thakur, A., Beerhues, L., Sircar, D. (2017)
Benzaldehyde dehydrogenase-driven phytoalexin biosynthesis in elicitor-treated Pyrus pyrifolia cell cultures
J. Plant Physiol. 215:154-162

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Juneja, K., Saini, S.S., Gaid, M., Beerhues, L., Sircar, D. (2017)
Production of life-saving drugs from Himalayan herbs
Sustainable Utilization of Natural Resources (Mondal, P., Dalai, A.K., eds.), CRC Press, Boca Raton, USA Chapter 11:333-352

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Letsyo,E., Jerz,G., Winterhalter,P., Beuerle,T. (2017)
Toxic pyrrolizidine alkaloids in herbal medicines commonly used in Ghana
Journal of Ethnopharmacology 202:154-161

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Ernst,L., Brandhorst,K., Papke,U., Altrogge,A., Zodel,S., Langer,N., Beuerle,T. (2017)
Identification and quantification of synthetic cannabinoids in ‛spice-like’ herbal mixtures: update of the German situation in early 2017
Forensic Science International 277:51-58

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Langer,N., Steinicke,F.,Lindigkeit,R., Ernst, L., Beuerle,T. (2017)
Determination of cross-reactivity of poly- and monoclonal antibodies for synthetic cannabinoids by direct SPR and ELISA
Forensic Science International 280:25-34

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Letsyo,E., Jerz,G., Winterhalter,P., Lindigkeit,R., Beuerle, T. (2017)
Incidence of Pyrrolizidine Alkaloids in Herbal Medicines from German Retail Markets: Risk Assessments and Implications to Consumers
Phytotherapy Research 31:1903-1909

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Letsyo,E., Jerz,G., Winterhalter,P., Dübecke,A., von der Ohe,W., von der Ohe,K., Beuerle,T. (2017)
Pyrrolizidine alkaloids in floral honeys of tropical Ghana: a health risk assessment
Food Additives & Contaminants: Part B 10:300-310

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Ma, D., Li, G., Alejos-Gonzalez, F., Zhu, Y., Xue, Z., Wang, A., Zhang, H., Li, X., Ye, H., Wang, H., Liu, B., Xie, D.Y. (2017)
Overexpression of a type-I isopentenyl pyrophosphate isomerase of Artemisia annua in the cytosol leads to high arteannuin B production and artemisinin increase
Plant Journal 91:466-479

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Crews,C., Beuerle,T. (2017)
The analysis of pyrrolizidine alkaloids in honey
Analysis of Food Toxins and Toxicants Analysis of Food Toxins and Toxicants, Volume 1. Eds.: Wong,Y.-C., Lewis,R.J.; Wiley-Blackwell, New Jersey :237-266

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Weiß, S., Liu, B., Reckwell, D., Beerhues, L., Winkelmann, T. (2017)
Impaired defense reactions in apple replant disease-affected roots of Malus domestica ‘M26’
Tree Physiology 37:1672-1685

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Bog,M., Elmer,M., Doppel,M., Ehrnsberger,H.F., Beuerle,T., Heilmann,J., Oberprieler,C. (2017)
Phytochemical investigations and food-choice experiments with two mollusc species in three central European Senecio L. (Asteraceae, Senecioneae) species and their hybrids
Chemoecology 27:155-169

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Wittstock, U., Meier, K., Dörr, F. Beena, M.R. (2016)
NSP-dependent simple nitrile formation dominates upon breakdown of major aliphatic glucosinolates in roots, seeds, and seedlings of Arabidopsis thaliana Columbia-0
Frontiers in Plant Science 7:1821 (10.3389/fpls.2016.01821)

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Wittstock, U., Kurzbach, E., Herfurth, A.M., Stauber, E.J. (2016)
Glucosinolate breakdown
Advances in Botanical Research, Vol. 80: Glucosinolates (E. Kopriva, ed.) :125-169

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Ohlen, M. van, Herfurth, A.-M., Kerbstadt, H., Wittstock, U. (2016)
Cyanide detoxification in an insect herbivore: Molecular identification of beta-cyanoalanine synthases from Pieris rapae
Insect Biochem. Mol. Biol. 70:99-110

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Langer,N., Lindigkeit,R., Schiebel,H.-M., Papke,U., Ernst,L., Beuerle,T. (2016)
Identification and quantification of synthetic cannabinoids in “spice-like” herbal mixtures: update of the German situation for the spring of 2015
Forensic Toxicology 34:94-107

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Gaid, M., Haas, P., Beuerle, T., Scholl, S., Beerhues, L. (2016)
Hyperforin production in Hypericum perforatum root cultures
J. Biotechnol. 222:47-55

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Hsu, Y.M., Wu, T.Y., El-Shazly, M., Beerhues, L., Du, Y.C., Thang, T.D., Luu, H.V., Hwang, T.L., Chang, F.R., Wu, Y.C. (2016)
3-Methyl-4,5-dihydrooxepine, polyoxygenated seco-cyclohexenes and cyclohexenes from Uvaria flexuosa and their anti-inflammatory activity
Phytochemistry 122:184-192

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Teotia, D., Saini, S.S., Gaid, M., Beuerle, T., Beerhues, L., Sircar, D. (2016)
Development and validation of a new HPLC method for the determination of biphenyl and dibenzofuran phytoalexins in Rosaceae
J. Chromatogr. Sci. 54:918-922

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Letsyo,E., Jerz,G., Winterhalter,P., Horn,G., Beuerle,T. (2016)
Survey of pyrrolizidine alkaloids in seven varieties of Lappula squarrosa: An alternative source of heart-healthy vegetable oil
Phytochemical Analalysis 27:133-139

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El-Awaad, I., Bocola, M., Beuerle, T., Liu, B., Beerhues, L. (2016)
Bifunctional CYP81AA proteins catalyze identical hydroxylations but alternative regioselective phenol couplings in plant xanthone biosynthesis
Nature Communications 7:11472

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Chizzali, C., Swiddan, A.K., Abdelaziz, S., Gaid, M., Richter, K., Fischer, T.C., Liu, B., Beerhues, L. (2016)
Expression of biphenyl synthase genes and formation of phytoalexin compounds in three fire blight-infected Pyrus communis cultivars
PLoS ONE 11(7):e0158713

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Belkheir, A.K., Gaid, M., Liu, B., Hänsch, R., Beerhues, L. (2016)
Benzophenone synthase and chalcone synthase accumulate in the mesophyll of Hypericum perforatum leaves at different developmental stages
Frontiers Plant Science 7:921

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Franklin, G., Beerhues, L., Cellarova, E. (2016)
Editorial: Molecular and biotechnological advancements in Hypericum species
Frontiers Plant Science 7:1687

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Langer,N., Lindigkeit,R., Schiebel,H.-M., Papke,U., Ernst,L., Beuerle, T. (2016)
Identification and quantification of synthetic cannabinoids in “spice-like“ herbal mixtures: update of the German situation for the spring of 2016
Forensic Science International 269:31-41

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Gaid, M., Wucherpfennig, T., Scholl, S., Beerhues, L., Krull, R. (2016)
Challenges for the cultivation of plant cells on the example of Hypericum perforatum and Taxus chinensis
Bioprocessing of plant in vitro systems (Pavlov, A., Bley, T., eds.), Reference Series in Phytochemistry Springer:1-26

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Gumz, F., Krausze, J., Eisenschmidt, D., Backenköhler, A., Barleben, L., Brandt, W., and Wittstock, U. (2015)
The crystal structure of the thiocyanate-forming protein from Thlaspi arvense, a kelch protein involved in glucosinolate breakdown
Plant Mol. Biol. 89:67-81

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Sievert,C., Beuerle,T., Hollmann,J., Ober,D. (2015)
Single cell subtractive transcriptomics for identification of cell-specifically expressed candidate genes of pyrrolizidine alkaloid biosynthesis
Phytochemistry 117:17-24

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Cramer,L., Ernst,L., Lubienski,M., Papke,U., Schiebel,H.-M., Jerz,G., Beuerle,t. (2015)
Structural and quantitative analysis of Equisetum alkaloids
116:269-282

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Cramer,L., Ernst,L., Lubienski,M., Papke,U., Schiebel,H.-M., Jerz,G., Beuerle,T. (2015)
Structural and quantitative analysis of Equisetum alkaloids
Phytochemistry 116:269-282

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Mädge,I., Cramer,L., Rahaus,I., Jerz,G., Winterhalter,P., Beuerle,T. (2015)
Pyrrolizidine Alkaloids in Herbal Teas for Infants, Pregnant or Lactating Women
Food Chemistry 187:491-498

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Sircar, D., Gaid, M.M., Chizzali, C., Reckwell, D., Kaufholdt, D., Beuerle, T., Broggini, G.A.L., Flachowsky, H., Liu, B., Hänsch, R., Beerhues, L. (2015)
Biphenyl 4-hydroxylases involved in aucuparin biosynthesis in rowan and apple are cytochrome P450 736A proteins
Plant Physiology 168:428-442

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Khalil, M.N.A., Brandt, W., Beuerle, T., Reckwell, D., Groeneveld, J., Hänsch, R., Gaid, M., Liu, B., Beerhues, L. (2015)
O-Methyltransferases involved in biphenyl and dibenzofuran biosynthesis
Plant Journal 83:263-276

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Kwiecień, I., Szydłowska, A., Kawka, B., Beerhues, L., Ekiert, H. (2015)
Accumulation of biologically active phenolic acids in agitated shoot cultures of three Hypericum perforatum cultivars: ‘Elixir’, ‘Helos’ and ‘Topas’
Plant Cell Tiss Organ Cult 123:273-281

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Fiesel, T., Gaid, M., Müller, A., Bartels, J., El-Awaad, I., Beuerle, T., Ernst, L., Behrends, S., Beerhues, L. (2015)
Molecular cloning and characterization of a xanthone prenyltransferase from Hypericum calycinum cell cultures
Molecules 20:15616-15630

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Moon, U.R., Sircar, D., Barthwal, R., Sen, S.K., Beuerle, T., Beerhues, L., Mitra, A. (2015)
Shoot cultures of Hoppea fastigiata (Griseb.) C.B. Clarke as potential source of neuroprotective xanthones
J Nat Med 69:375-386

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Cheng, Y.B., Tsai, Y.H., Lo, I.W., Haung, C.C., Tsai, Y.C., Beerhues, L., El-Shazly, M., Hou, M.F., Yuan, S.S., Wu, C.C., Chang, F.R., Wu, Y.C. (2015)
Pandalisines A and B, novel indolizidine alkaloids from the leaves of Pandanus utilis
Bioorg Med Chem Lett 25:4333-4336

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Brandt, W., Backenköhler, A., Schulze, E., Plock, A., Herberg, T., Roese, E., Wittstock, U. (2014)
Molecular models and mutational analyses of plant specifier proteins suggest active site residues and reaction mechanism
Plant Molecular Biology 84:173-188

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Chizzali, C., Liu, B., Richter, K., Flachowsky, H., Peil, A., Hanke, M.V., Beerhues, L. (2014)
Biphenyls and dibenzofurans - fire blight-induced phytoalexins of pear
Acta Hort. 1056:181-185

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Cramer,L., Fleck,G., Horn,G., Beuerle,T. (2014)
Process Development of Lappula squarrosa Oil Refinement: Monitoring of Pyrrolizidine Alkaloids in Boraginaceae Seed Oils
Journal of the American Oil Chemists' Society 91:721-731

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Beuerle,T., Mädge,I., Cramer,L. (2014)
Pyrrolizidinalkaloide in Lebensmitteln
Deutsche Lebensmittelrundschau 110:242-246

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Muszyńska, B., Ekiert, H., Kwiecień, I., Maślanka, A., Zodi, R., Beerhues, L. (2014)
Comparative analysis of therapeutically important indole compounds in in vitro cultures of Hypericum perforatum cultivars by HPLC and TLC analysis coupled with densitometric detection
Nat. Prod. Commun. 9:1437-1440

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Liou, J.R., Wu, T.Y., Thang, T.D., Hwang, T.L., Wu, C.C., Cheng, Y.B., Chiang, M.Y., Lan, Y.H., El-Shazly, M., Wu, S.L., Beerhues, L., Yuan, S.S., Hou, M.F., Chen, S.L., Chang, F.R., Wu, Y.C. (2014)
Bioactive 6S‑styryllactone constituents of Polyalthia parviflora
J. Nat. Prod. 77:2626-2632

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Beuerle,T. (2014)
Summenparametermethode zur Bestimmung von Pyrrolizidinalkaloiden
Deutsche Lebensmittel-Rundschau 110:454-459

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Reckwell, D., Hänsch, R., Schulze, J., Beerhues, L. (2014)
Immunolocalization of biphenyl synthase in elicitor-treated cell cultures of Sorbus aucuparia
Acta Hort. 1056:307-311

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Langer,N., Lindigkeit,R., Schiebel,H.-M., Ernst,L., Beuerle,T. (2014)
Identification and quantification of synthetic cannabinoids in ‘spice-like‘ herbal mixtures: snapshot of the German situation in the fall of 2012
Drug Testing and Analysis 6:59 – 71

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Ji, Y., Xiao, J., Shen, Y., Ma, D., Li, Z., Pu, G., Li, X., Huang, L., Liu, B., Ye, H., Wang, H. (2014)
Cloning and characterization of AabHLH1, a bHLH transcription factor that positively regulates artemisinin biosynthesis in Artemisia annua
Plant Cell Physiol. 55:1592-1604

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Coyne, S., Litomska, A., Chizzali, C., Khalil, M., Richter, K., Beerhues, L., Hertweck, C. (2014)
Control of plant defense mechanisms and fire blight pathogenesis through the regulation of 6-thioguanine biosynthesis in Erwinia amylovora
ChemBioChem 15:373-376

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Tsai, Y.C., Chiang, S.Y., El-Shazly, M., Wu, C.C., Beerhues, L., Lai, W.C., Wu, S.F., Yen, M.H., Wu, Y.C., Chang, F.R. (2013)
The oestrogenic and anti-platelet activities of dihydrobenzofuroisocoumarins and homoisoflavonoids from Liriope platyphylla roots
Food Chemistry 140:305-314

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Menzel,F., Blüthgen,N., Tolasch,T., Conrad,J., Beifuß,U., Beuerle,T., Schmitt,T. (2013)
Crematoenones - a novel substance class exhibited by ants functions as appeasement signal
Frontiers in Zoology 10:Doi: 10.1186/1742-9994-10-32

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Coyne, S., Chizzali, C., Khalil, M.N.A., Litomska, A., Richter, K., Beerhues, L., Hertweck, C. (2013)
Biosynthesis of the antimetabolite 6-thioguanine in Erwinia amylovora plays a key role in fire blight pathogenesis
Angewandte Chemie Int. Ed. 52:10564-10568

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Benford,D., Beuerle,T., Brimer,L., Cottrill,B., Doerge,D., Dusemund,B., Farmer,P., Fürst,P., Humpf, H.-U., Mulder,P. (2013)
Scientific Opinion on Tropane alkaloids in food and feed
EFSA Journal 11:3386

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Abdel-Rahman, I.A.M., Beuerle, T., Ernst, L., Abdel-Baky, A.M., Desoky, E.K., Ahmed, A.S., Beerhues, L. (2013)
In vitro formation of the anthranoid scaffold by cell-free extracts from yeast-extract-treated Cassia bicapsularis cell cultures
Phytochemistry 88:15-24

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Khalil, M.N.A., Beuerle, T., Müller, A., Ernst, L., Bhavanam, V.B.R., Liu, B., Beerhues, L. (2013)
Biosynthesis of the biphenyl phytoalexin aucuparin in Sorbus aucuparia cell cultures treated with Venturia inaequalis
Phytochemistry 96:101-109

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Cramer,L., Schiebel,H.-M., Ernst,L., Beuerle,T. (2013)
Pyrrolizidine Alkaloids in the Food Chain: Development, Validation, and Application of a New HPLC-ESI-MS/MS Sum Parameter Method
Journal of Agriculture and Food Chemistry 61:11382-11391

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Abdel-Rahman, I.A.M., Abdel-Baky, A.M., Desoky, E.E.K., Ahmed, A.S., Beerhues, L. (2013)
Establishment of callus and cell suspension cultures of Cassia bicapsularis L.
Bull. Pharm. Sci., Assiut University 36:23-30

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Jiratchariyakul, W., Beerhues, L., Mahady, G.B., Kummalue, T., Vongsakul, M. (2013)
Botanicals in dietary supplements (Editorial)
Evidence-Based Complementary and Alternative Medicine ID 465313:1-2 (http://dx.doi.org/10.1155/2013/465313)

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Chizzali, C., Gaid, M.M., Belkheir, A.K., Beuerle, T., Hänsch, R., Richter, K., Flachowsky, H., Peil, A., Hanke, M.V., Liu, B., Beerhues, L. (2013)
Phytoalexin formation in fire blight-infected apple
Trees 27:477-484

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Oetken,J., Beuerle,T., Knapp,H., Giesecke,T., Winterhalter,P., Jerz,G. (2013)
Preparative mass-spectrometry profiling of genotoxic pyrrolizidine alkaloids in Jacobaea vulgaris (syn. Senecio jacobaea) by spiral-coil countercurrent chromatography and ESI-MS/MS off-line continuous injection
Planta Med 79-PH8:Doi: 10.1055/s-0033-1352085

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Kuchernig, J.-C., Burow, M., Wittstock, U. (2012)
Evolution of specifier proteins in glucosinolate-containing plants
BMC Evolutionary Biology 12:127

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Gershenzon, J., Fontana, A., Burow, M., Wittstock, U., Degenhardt, J. (2012)
Mixtures of plant secondary metabolites: metabolic origins and ecological benefits
In: The Ecology of Plant secondary Metabolites: From Genes to Global Processes. Iason GR, Dicke M, Hartley SE (eds.). Cambridge University Press. British Ecological Society. :56-77

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Turning the ''mustard oil bomb'' into a ''cyanide bomb'': aromatic glucosinolate metabolism in a specialist insect herbivore
PloS ONE 7 (4):e35545

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Schramm, K., Vassao, D.G., Reichelt, M., Gershenzon, J., Wittstock, U. (2012)
Metabolism of glucosinolate-derived isothiocyanates to glutathione conjugates in generalist lepidopteran herbivores
Insect Biochemistry and Molecular Biology 42:174-182

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Ernst,L., Krueger,K., Lindigkeit,R., Schiebel,H.-M., Beuerle,T. (2012)
Synthetic cannabinoids in “spice-like” herbal blends: first appearance of JWH-307 and recurrence of JWH-018 on the German market
Forensic Science International 222:216-222

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Analysis of synthetic cannabinoids in ‘spice-like‘ herbal highs: Snapshot of the German market in summer 2011
Analytical and Bioanalytical Chemistry 404:157-171

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Formation of biphenyl and dibenzofuran phytoalexins in the transition zones of fire blight-infected stems of Malus domestica cv. ''Holsteiner Cox'' and Pyrus communis cv. ''Conference''
Phytochemistry 77:179-185

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Ernst,L., Beuerle,T. (2012)
Das "Spice-Phänomen" - Strukturaufklärung synthetischer Cannabinoide -
GIT-Labor 56:82-84

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Independent Recruitment of a Flavin-Dependent Monooxygenase for Safe Accumulation of Sequestered Pyrrolizidine Alkaloids in Grasshoppers and Moths
PLoS ONE 7:e31796 (1-7)

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Qiu, X., Lei, C., Huang, L., Li, X., Hao, H., Du, Z., Wang, H., Ye, H., Beerhues, L., Liu, B. (2012)
Endogenous hydrogen peroxide is a key factor in the yeast extract-induced activation of biphenyl biosynthesis in cell cultures of Sorbus aucuparia
Planta 235:217-223

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Fellenberg, C., van Ohlen, M., Handrick, V., Vogt, T. (2012)
The role of CCoAOMT1 and COMT1 in Arabidopsis anthers.
Planta 236:51-61

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Chizzali, C., Beerhues, L. (2012)
Phytoalexins of the Pyrinae: biphenyls and dibenzofurans
Beilstein J. Org. Chem. 8:613-620

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Cramer,L., Beuerle, T. (2012)
Detection and Quantification of Pyrrolizidine Alkaloids in Antibacterial Medical Honeys
Planta Medica 78:1976-1982

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Huang, L., Wang, H., Ye, H., Du, Z., Zhang, Y., Beerhues, L., Liu, B. (2012)
Differential expression of benzophenone synthase and chalcone synthase in Hypericum sampsonii
Natural Product Communications 7:1615-1618

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Huang, L., Li, J., Ye, H., Li, C., Wang, H., Liu, B., Zhang, Y. (2012)
Molecular characterization of the pentacyclic triterpenoid biosynthetic pathway in Catharanthus roseus
Planta 236:1571-1581

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Biochemical characterization and identification of a cinnamyl alcohol dehydrogenase from Artemisia annua
Plant Sciences 193-194:85-95

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Differential expression of biphenyl synthase gene family members in fire-blight-infected apple "Holsteiner Cox"
Plant Physiology 158:864-875

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Alexander,J., Benford,D., Boobis,A., Ceccatelli,S., Cottrill,B., Cravedi,J.-P, Di Domenico,A., Doerge,D., Dogliotti, E., Edler,L., Farmer,P., Filipic,M., Fink-Gremmels, J., Fürst,P., Guerin,T., Knutsen,H.K., Machala,M., Mutti,A., Rose,M., Schlatter,J., van Leeuwen,R., Beuerle,T., Brimer,L., Dusemund,B., Humpf,H.-U., Mulder,P., Binaglia,M., Carletti,A., Cioacata,G., Ruiz,J.AG., EFSA Panel on Contaminants in the Food Chain CONTAM (2012)
Scientific Opinion on ergot alkaloids in food and feed
EFSA Journal 10:2798

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Büttner, M., Barleben, L. (2012)
One-pot fusion polymerase chain reaction for combinatorial synthesis of DNA from several cassettes.
Anal. Biochem. 421:797-798

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Abdelhady, M.I.S., Kamal, A.M., Tawfik, N.F., Abdelkhalik, S.M., Motaal, A.A., Beerhues, L. (2012)
Induction of callus and cell suspension cultures of three Callistemon species
BioTechnology: An Indian Journal 6:295-298

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Gaid, M.M., Sircar, D., Müller, A., Beuerle, T., Liu, B., Ernst, L., Hänsch, R., Beerhues, L. (2012)
Cinnamate:CoA ligase initiates biosynthesis of a benzoate-derived xanthone phytoalexin in Hypericum calycinum cell cultures
Plant Physiology 160:1267-1280

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Kuchernig, J.-C., Backenköhler, A., Lübbecke, M., Burow, M., Wittstock, U. (2011)
A thiocyanate-forming protein generates multiple products upon allylglucosinolate breakdown in Thlaspi arvense.
Phytochemistry 72:1699-1709

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Winde, I., Wittstock, U. (2011)
Insect herbivore counteradaptations to the plant glucosinolate-myrosinase system
Phytochemistry 72:1566-1575

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Desulfation Followed by Sulfation: Metabolism of Benzylglucosinolate in Athalia rosae (Hymenoptera: Tenthredinidae)
ChemBioChem 12:1252-1257

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Sircar, D., Mukherjee, C., Beuerle, T., Beerhues, L., Mitra, A. (2011)
Characterization of p-hydroxybenzaldehyde dehydrogenase, the final enzyme of p-hydroxybenzoic acid biosynthesis in hairy roots of Daucus carota
Acta Physiol. Plant. 33:2019-2024

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Gaid, M.M., Scharnhop, H., Ramadan, H., Beuerle, T., Beerhues, L. (2011)
4-Coumarate:CoA ligase family members from elicitor-treated Sorbus aucuparia cell cultures
J. Plant Physiol. 168:944-951

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Lei, C., Ma, D., Pu, G., Qiu, X., Du, Z., Wang, H., Li, G., Ye, H., Liu, B. (2011)
Foliar application of chitosan activates artemisinin biosynthesis in Artemisia annua L.
Industrial Crops and Products 33:176-182

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Metabolic engineering of artemisinin biosynthesis in Artemisia annua L.
Plant Cell Rep. 30:689-694

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Pyrrolizidine Alkaloids in Honey: Comparison of two current analytical methods
Food Additives and Contaminants 28:332-347

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Cinnamyl alcohols and methyl esters of fatty acids from Wedelia prostrata callus cultures
Natural Product Research 25:45-52

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Pyrrolizidine alkaloids in food: Downstream contamination in the food chain caused by honey and pollen
Food Additives and Contaminants: Part A 28:325-331

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Identification and characterization of JWH-122 used as new ingredient in "spice-like" herbal incenses
Forensic Science International 208:e31-35

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Biosynthesis of the active Hypericum perforatum constituents
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Biphenyl and dibenzofuran formation in fire blight-infected Malus domestica cultivars
Acta Hort. (ISHS) 896:547-553

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Scientific opinion on pyrrolizidine alkaloids in food and feed
EFSA Journal 9:2406

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Pyrrolizidin Alkaloide; Giftige (Bienen)-Weiden; Was bedeutet dies für Bienen, Honig und Pollen
Allgemeine Deutsche Imkerzeitung ADIZ 10:12-15

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Total phenolic content and antioxidant activity of standardized extracts from leaves and cell cultures of three Callistemon species
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Isolation of the 5''''-end of plant genes from genomic DNA by TATA-box-based degenerateprimers
Mol Biotechnol. 47:152-156

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Glucosinolate breakdown in Arabidopsis: mechanism, regulation and biological significance
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Differential effects of indole and aliphatic glucosinolates on lepidopteran herbivores
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The influence of metabolically engineered glucosinolates profiles in Arabidopsis thaliana on Plutella xylostella preference and performance
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Pyrrolizidine alkaloids (PAs) in honey and pollen - legal regulation of PA levels in food and animal feed required
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Pyrrolizidine alkaloids in pollen and pollen products
Molecular Nutrition & Food Research 54:292-300

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A novel 4-hydroxycoumarin biosynthetic pathway
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Artemisinin biosynthesis in growing plants of Artemisia annua. A 13CO2 study
Phytochemistry 71:179-187

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Differential effect of elicitors on biphenyl and dibenzofuran formation in Sorbus aucuparia cell cultures
J. Agric. Food Chem. 58:11977-11984

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Einfluss von Pyrrolizidinalkaloiden auf Honigbienen
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Regulation and function of specifier proteins in plants
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The genetic basis of constitutive and herbivore-induced ESP-independent nitrile formation in Arabidopsis.
Plant Physiology 149:561-574

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Biosynthesis of biphenyls and benzophenones - Evolution of benzoic acid-specific type III polyketide synthases in plants
Phytochemistry 70:1719-1727

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Spice: A never ending story?
Forensic Science International 191:58-63

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A single amino acid substitution converts benzophenone synthase in phenylpyrone synthase
J. Biol. Chem. 284:30957-30964

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Benzaldehyde dehydrogenase from chitosan-treated Sorbus aucuparia cell cultures
J. Plant Physiol. 166:1343-1349

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Purification, cDNA cloning and functional expression of NADPH-cytochrome P450 reductase from Centaurium erythraea cell cultures
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Homospermidine in transgenic tobacco results in considerably reduced spermidine levels but is not converted to pyrrolizidine alkaloid precursors.
Plant Molecular Biology 71:145-155

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Secondary metabolic profiling and artemisinin biosynthesis of two genotypes of Artemisia annua
Planta Med 75:1625-1633

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Identification of a Polygonum cuspidatum three-intron gene encoding a type III polyketide synthase producing both naringenin and p-hydroxybenzalacetone
Planta 229:1077-1086

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Pyrrolizidine alkaloids: The successful adoption of a plant chemical defense
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Terpenoid metabolic profiling analysis of transgenic Artemisia annua L. by comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry
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Sulfur-containing secondary metabolites and their role in plant defense
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ESP and ESM1 mediate indol-3-acetonitrile production from indol-3-ylmethyl glucosinolate in Arabidopsis
Phytochemistry 69:663-671

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Defense by pyrrolizidine alkaloids: developed by plants and recruited by insects.
In: A. Schaller (ed.) Induced Plant Resistance to Herbivory :pp. 213-231, Springer

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Pyrrolizidine alkaloids of the endemic Mexican genus Pittocaulon and assignment of stereoisomeric 1,2-saturated necine bases
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The lost origin of chemical ecology in the late nineteenth century
Proc. Natl. Acad. Sci. U.S.A. 105:4541-4546

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Pyrrolizidine alkaloids in honey: Risk analysis by gas chromatography-mass spectrometry
Molecular Nutrition & Food Research 52:1193-2000

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Metabolic fingerprinting investigation of Artemisia annua L. in different stages of development by gas chromatography and gas chromatography-mass spectrometry
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A novel type III polyketide synthase encoded by a three-intron gene from Polygonum cuspidatum
Planta 229:457-469

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Analysis of pyrrolizidine alkaloids in honey
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The genetic basis of a plant-insect coevolutionary key innovation
Proc. Natl. Acad. Sci. USA 104:20427-20431

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Tipping the scales - specifier proteins in glucosinolate hydrolysis
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Plant Molecular Biology 64:173-185

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Glucosinolate hydrolysis in Lepidium sativum - identification of the thiocyanate-forming protein
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From waste products to ecochemicals: fifty years research of plant secondary metabolism
Phytochemistry 68:2831-2846

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Biphenyl synthase, a novel type III polyketide synthase
Planta 225:1495-1503

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Pyrrolizidine alkaloids and pharmacophagous Lepidoptera visitors of Prestonia amabilis (Apocynaceae) in a montane rain forest in Ecuador
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Tissue distribution, core biosynthesis and diversification of pyrrolizidine alkaloids of the lycopsamine type in three Boraginaceae species
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Differential accumulation of hyperforin and secohyperforin in Hypericum perforatum tissue cultures
Phytochemistry 68:2670-2677

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Hyperforin, garcinol and related compounds - Biosynthesis of complex plant polyketide derivatives
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Metabolic engineering of terpenoids in plants
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Polyketide metabolism in Hypericum perforatum and related species
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Insect Biochem. Mol. Biol. 37:80-89

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Earlier flowering induced by over-expression of CO gene does not accompany increase of artemisinin biosynthesis in Artemisia annua
Plant Biol (Stuttg) 9:442-446

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ChemBioChem 7:1982-1989

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Altered glucosinolate hydrolysis in genetically engineered Arabidopsis thaliana and its influence on the larval development of Spodoptera littoralis
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Comparative biochemical characterization of nitrile-forming proteins from plants and insects that alter myrosinase-catalyzed hydrolysis of glucosinolates.
FEBS J. 273:2432-2446

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Tissue distribution and biosynthesis of 1,2-saturated pyrrolizidine alkaloids in Phalaenopsis hybrids (Orchidaceae)
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Hyperforin
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Plant sulfite oxidase as novel producer of H2O2: combination of enzyme catalysis with a subsequent non-enzymatic reaction step.
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Seeing Double – Gene Duplication and Diversification in Plant Secondary Metabolism
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Recruitment of alkaloid-specific homospermidine synthase (HSS) from ubiquitous deoxyhypusine synthase: does Crotalaria possess a functional HSS that still has DHS activity?
Phytochemistry 66:1346-1357

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Uptake and turn-over of glucosinolates sequestered in the sawfly Athalia rosae.
Insect Biochem. Mol. Biol. 35:1189-1198

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Acquisition, transformation and maintenance of plant pyrrolizidine alkaloids by the polyphagous arctiid Grammia geneura
Insect Biochem. Mol. Biol. 35:1083-1099

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Pelser, P. B., de Vos, H., Theuring, C., Beuerle, T., Vrieling, K., Hartmann, T. (2005)
Frequent gain and loss of pyrrolizidine alkaloids in the evolution of Senecio section Jacobaea (Asteraceae)
Phytochemistry 66,:1285-1295

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Hartmann, T., Theuring, C., Beuerle, T., Klewer, N., Schulz, S., Singer, M.S., Bernays, E.A. (2005)
Specific recognition, detoxification and metabolism of pyrrolizidine alkaloids by the polyphagous arctiid Estigmene acrea
Insect Biochem. Mol. Biol. 35:391-411

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Beerhues, L. (2005)
Gifte der Natur - Pflanzen und Tiere Lateinamerikas
die waage (Kulturmagazin der Grünenthal GMBH) 44:86-93

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Beerhues, L., Abd El-Mawla, A., Beuerle, T., Boubakir, Z., Klingauf, P., Liu, B. (2005)
Biosynthesis of active plant polyketide derivatives
Proceedings of the 9th International Congress "Phytopharm 2005" and the PSE Young Scientists Meeting on "Plants and Health" (Makarov, V.G., ed.) :39-46

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Boubakir, Z., Beuerle, T., Liu, B., Beerhues, L. (2005)
The first prenylation step in hyperforin biosynthesis
Phytochemistry 66:51-57

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Jenett-Siems, K., Ott, S.C., Schimming, T., Siems, K., Müller, F., Hilker, M., Witte, L., Hartmann, T., Austin, D. F., Eich, E. (2005)
Ipangulines and minalobines, chemotaxonomic markers of the infrageneric Ipomoea taxon subgenus Quamoclit, section Mina
Phytochemistry 66:223-231

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Klingauf, P., Beuerle, T., Mellenthin, A., El-Moghazy, S.A.M., Boubakir, Z., Beerhues, L. (2005)
Biosynthesis of the hyperforin skeleton in Hypericum calycinum cell cultures
Phytochemistry 66:139-145

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Anke, S., Niemüller, D., Moll, S., Hänsch, R., Ober, D. (2004)
Polyphyletic origin of pyrrolizidine alkaloids within the Asteraceae: Evidence from differential tissue expression of homospermidine synthase
Plant Physiology 136:4037-4047

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Reimann, A., Nurhayati, N., Backenköhler, A., and Ober, D. (2004)
Repeated evolution of the pyrrolizidine-mediated defense system in separate angiosperm lineages.
The Plant Cell 16:2772-2784

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Wittstock, U., Agerbirk, N., Stauber, E.J., Olsen, C.E., Hippler, M., Mitchell-Olds, T., Gershenzon, J., Vogel, H. (2004)
Successful herbivore attack due to metabolic diversion of a plant chemical defense.
Proc. Natl. Acad. Sci. U.S.A. 101:4859-4864

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Narberhaus, I., Papke, U., Theuring, C., Beuerle, T., Hartmann, T., Dobler, S. (2004)
Direct evidence for membrane transport of host plant derived pyrrolizidine alkaloid N-oxides in two leaf beetle genera
J. Chem. Ecol. 30:2003-2022

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Singer, M.S., Carriere, Y., Theuring, C., Hartmann, T. (2004)
Disentangling food quality from resistance against parasitoids: diet choice by a generalist caterpillar
The American Naturalist 164:423-429

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Hartmann, T., Theuring, C., Beuerle, T., Bernays, E. A. (2004)
Phenological fate of plant-acquired pyrrolizidine alkaloids in the polyphagous arctiid Estigmene acrea
Chemoecology 14:207-216

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Pasteels, J. M., Hartmann, T. (2004)
Sequestration of pyrrolizidine alkaloids in Oreina and Platyphora leaf beetles: Physiological, ecological and evolutionary aspects
In: New Contributions to the Biology of Chrysomelidae (eds. Jolivet, P. H., Santiago-Blay, J. A., Schmitt, M.), pp. 677-691. :SPB Academic Publishing bv, The Hague, The Netherlands

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Hartmann, T. (2004)
Plant-derived secondary metabolites as defensive chemicals in herbivorous insects: a case-study in chemical ecology
Planta 219:1-4

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Narberhaus, I., Theuring, C., Hartmann, T., Dobler, S. (2004)
Time course of pyrrolizidine alkaloid sequestration in Longitarsus flea beetles (Coleoptera, Chrysomelidae)
Chemoecology 14:17-23

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Hartmann,T., Theuring,C., Beuerle,T., Ernst,L., Singer, M.S., Bernays, E.A. (2004)
Acquired and partially de novo synthesized pyrrolizidine alkaloids in two polyphagous arctiids and the alkaloid profiles of their larval food-plants
J. Chem. Ecol. 30:229-254

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Bernays, E.A., Hartmann, T., Chapman, R.F. (2004)
Gustatory sensitivity to pyrrolizidine alkaloids in the Senecio specialist, Tyria jacobaeae (Lepidoptera, Arctiidae)
Physiol. Entomol. 29:67-72

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Liu, B., Beuerle, T., Klundt, T., Beerhues, L. (2004)
Biphenyl synthase from yeast-extract-treated cell cultures of Sorbus aucuparia
Planta 218:492-496

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Ober, D. (2003)
Chemical ecology of alkaloids exemplified with the pyrrolizidines.
Recent Advances in Phytochemistry (J. T. Romeo et al., eds.) 37, Pergamon, Amsterdam:203-230

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Wittstock, U., Kliebenstein, D.J., Lambrix, G., Reichelt, M., Gershenzon, J. (2003)
Glucosinolate hydrolysis and its impact on generalist and specialist insect herbivores.
ed. Romeo J.T., Recent Advances in Phytochemistry: Integrative phytochemistry: from ethnobotany to molecular ecology. Vol. 37, Elsevier, Amsterdam:101-125

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Ober, D., Harms, R., Witte, L., Hartmann, T. (2003)
Molecular evolution by change of function: Alkaloid-specific homospermidine synthase retained all properties of deoxyhypusine synthase except binding the eIF5A precursor protein.
J. Biol. Chem. 278:12805-12812

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Ober, D., Gibas, L., Witte, L., Hartmann, T. (2003)
Evidence for general occurrence of homospermidine in plants and its supposed origin as by-product of deoxyhypusine synthase
Phytochemistry 62:339-344

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Weinig, S., Hecht, H.-J., Mahmud, T., and Müller, R. (2003)
Further insights into Myxobacterial PKS/NRPS systems and evidence for a new subclass of methyl transferases
Chem. Biol. 10:939-952

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Weinig, S., Mahmud, T., and Müller, R. (2003)
Markerless mutations in the myxothiazol biosynthetic gene cluster: A delicate megasynthetase with a superfluous nonribosomal peptide synthetase domain
Chem. Biol. 10:953-960

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Bode, H.B., Irschik, H., Wenzel, S.C., Reichenbach, H., Müller, R., and Höfle, G. (2003)
The Leupyrrins: A Structurally Unique Family of Secondary Metabolites from the Myxobacterium Sorangium cellulosum
J. Nat. Prod. 66:1203-1206

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Hartmann, T. Theuring, C., Bernays, E.A. (2003)
Are insect-synthesized retronecine esters (creatonotines) the precursors of the male courtship pheromone in the arctiid moth Estigmene acrea?
J. Chem. Ecol. 29:2603-2609

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Hartmann,T., Ober,D. (2003)
Der pflanzliche Sekundärstoffwechsel: Biologische Notwendigkeit und pharmazeutischer Nutzen.
Carolo-Wilhelmina: Forschungsmagazin der Technischen Universität Braunschweig 38:26-32

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Gerth, K., Pradella, S., Perlova, O., Beyer, S. and Müller, R. (2003)
Myxobacteria: Proficient producers of novel natural products with various biological activities past and future biotechnological aspects with the focus on the genus Sorangium
J. Biotechnol. :in press

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Bernays, E.A., Rodrigues, D., Chapman, R.F., Singer, M.R., Hartmann, T. (2003)
Loss of gustatory responses to pyrrolizidine alkaloids after their extensive ingestion in the polyphagous caterpillar, Estigmene acrea
J. Exp. Biol. 206:4487-4496

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Halusková, J., Liu, B., Beerhues, L. (2003)
rDNA methylation in Hypericum perforatum diploids and tetraploids
Z. Naturforsch. 58c:895-897

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Kopp, M., Irschik, H., Gross, F., Perlova, O., Sandmann, S., Gerth, K., and Müller, R. (2003)
Critical variations of conjugational DNA transfer into secondary metabolite multiproducing Sorangium cellulosum strains So ce12 and So ce56 development of a mariner-based transposon mutagenesis system
J. Biotechnol. :in press

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Chapman, R. F., Bernays, E. A., Singer, M. S., Hartmann, T. (2003)
Experience influences gustatory responsiveness to pyrrolizidine alkaloids in the polyphagous caterpillar, Estigmene acrea
J. Comp. Physiol. A 189:833-841

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Franke, D., Lorbach, V., Dose, C., Eßer, S.. Halfar, M., Thömmes, J., Müller, R., Takors, R., Sprenger, G.A and Müller, M. (2003)
5S,6S)-Dihydroxy-cyclohexa-1,3-dienecarboxylic acid: microbial access with engineered cells of Escherichia coli and applicability as starting material in natural product synthesis
Chemistry – A European Journal 9:4188-4196

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Narberhaus, I., Theuring, C., Hartmann, T., Dobler, S. (2003)
Uptake and metabolism of pyrrolizidine alkaloids in Longitarsus flea beetles (Coleoptera: Chrysomelidae) adapted and non-adapted to alkaloid-containing host plants.
J. Comp. Physiol. B 173:483-491

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Liu, B., Falkenstein-Paul, H., Schmidt, W., Beerhues, L. (2003)
Benzophenone synthase and chalcone synthase from Hypericum androsaemum cell cultures: cDNA cloning, functional expression, and site-directed mutagenesis of two polyketide synthases.
Plant J. 34:847-855

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Hartmann, T., Häggström, H., Theuring, C., Lindigkeit, L., Rahier, M. (2003)
Detoxification of pyrrolizidine alkaloids by the harvestman Mitopus morio (Phalangidae) a predator of alkaloid defended leaf beetles
Chemoecology 13:123-127

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Bernays, E. A., Chapman, R. F., LaMunyon, C. W., Hartmann, T. (2003)
Taste receptors for pyrrolizidine alkaloids in a monophagous caterpillar.
J. Chem. Ecol. 29:1709-1722

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Bode, H. B., and Müller, R. (2003)
Possibility of bacterial recruitment of plant genes associated with the biosynthesis of secondary metabolites
Plant. Physiol. 132:1153-1161

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Pasteels, J. M.,Theuring, C.,Witte, L.,Hartmann, T. (2003)
Sequestration and metabolism of protoxic pyrrolizidine alkaloids by larvae of the leaf beetle Platyphora boucardi and their transfer via pupae into defensive secretions of adults
J. Chem. Ecol. 29:337-355

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Bode, H.B., Zeggel, B., Silakowski, B., Wenzel, S. C., Reichenbach, H. and Müller, R. (2003)
Steroid biosynthesis in procaryotes: Identification of myxobacterial steroids and cloning of the first bacterial 2,3(S)-oxidosqualen cyclase from the myxobacterium Stigmatella aurantiaca
Mol. Microbiol. 47:471-481

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Pasteels, J. M., Theuring, C., Windsor, D. M., Hartmann, T. (2003)
Uptake and metabolism of [14C]rinderine and [14C]retronecine in leaf-beetles of the genus Platyphora and alkaloid accumulation in the exocrine defensive secretions.
Chemoecology 13:55-62

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Hartmann, T., Theuring, C., Witte, L., Schulz, S., Pasteels, J. M. (2003)
Biochemical processing of plant acquired pyrrolizidine alkaloids by the alkaloid sequestering neotropical leaf-beetle Platyphora boucardi.
Insect Biochem. Mol. Biol. 33:515-524

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Halkier, B.A., Hansen, C.H., Mikkelsen, M.D., Naur, P., Wittstock, U. (2002)
The role of cytochromes P450 in biosynthesis and evolution of glucosinolates.
eds. Romeo, J.T., Dixon, R.A., Recent Advances in Phytochemistry: Phytochemistry in the post-genomics eras. Vol. 36, Elsevier, Amsterdam:223-248

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Wittstock, U., Gershenzon J. (2002)
Constitutive plant toxins and their role in defense against herbivores and pathogens.
Curr. Opin. Plant Biol. 5:300-307

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Moll, S. ,Anke, S., Kahmann, U., Hansch, R., Hartmann, T., Ober, D. (2002)
Cell-specific expression of homospermidine synthase, the entry enzyme of the pyrrolizidine alkaloid pathway in Senecio vernalis, in comparison with its ancestor, deoxyhypusine synthase
Plant Physiol. 130:47-57

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Wittstock, U., Halkier, B.A. (2002)
Glucosinolate research in the Arabidopsis era.
Trends Plant Sci. 7:263-270

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Naumann, C., Hartmann, T., Ober, D. (2002)
Evolutionary recruitment of a flavin-dependent monooxygenase for the detoxification of host plant-acquired pyrrolizidine alkaloids in the alkaloid-defended arctiid moth Tyria jacobaeae
Proc. Natl. Acad. Sci. U. S. A. 99:6085-90

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Beuerle,T., Pichersky, E. (2002)
Enzymatic Synthesis and Purification of Aromatic Coenzyme A Esters
Analytical Biochemistry 302:305-312

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Beuerle,T., Pichersky,E. (2002)
Purification and Characterization of Benzoate: Coenzyme A ligase from Clarkia breweri
Archives of Biochemistry and Biophysics 400:258-264

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Lavid,N., Wang,J., Shalit,M., Guterman,I., Bar,E., Beuerle,T., Menda,N., Shafir,S., Zamir,D., Adam,Z., Vainstein,A., Weiss,D., Pichersky,E., Lewinsohn,E. (2002)
O-methyltransferases involved in the biosynthesis of volatile phenolic derivatives in rose petals.
Plant Physiology 129:1899-1907

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Gang,D.R., Lavid,N., Zubieta,C., Cheng,F., Beuerle,T., Lewinsohn,E., Noel,J.P., Pichersky, E. (2002)
Characterization of Phenylpropene O-Methyltransferases from Sweet Basil: Facile Change of Substrate Specificity and Convergent Evolution within a Plant OMT Family
Plant Cell 14:505-519

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Arakawa, K., Müller, R., Mahmud, T., Yu, T.-W. and Floss, H. G. (2002)
Characterization of the Early Stage Aminoshikimate Pathway in the Formation of 3-Amino-5-hydroxybenzoic Acid (AHBA): The RifN Protein Specifically Converts Kanosamine into Kanosamine 6-Phosphate
J. Amer. Chem. Soc. 124:10644-10655

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Bernays, E. A., Chapman, R. F., Hartmann, T. (2002)
A highly sensitive taste receptor cell for pyrrolizidine alkaloids in the lateral galeal sensillum of a polyphagous caterpillar, Estigmene acraea
J. Comp. Physiol. [A] 188:715-23

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Haberer, W., Witte, L., Hartmann, T., Dobler, S. (2002)
Pyrrolizidine alkaloids in Pulmonaria obscura
Planta Med. 68:480-482

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Bernays, E. A., Chapman, R. F., Hartmann, T. (2002)
A taste receptor neurone dedicated to the perception of pyrrolizidine alkaloids in the medial galeal sensillum of two polyphagous arctiid caterpillars
Physiol. Entomol. 27:312-321

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Brückmann, M., Termonia, A., Pasteels, J. M., Hartmann, T. (2002)
Characterization of an extracellular salicyl alcohol oxidase from larval defensive secretions of Chrysomela populi and Phratora vitellinae (Chrysomelina)
Insect Biochem. Mol. Biol. 32:1517-23

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Gaitatzis, N., Silakowski, B., Kunze, B., Nordsiek, G., Blöcker, H., Höfle, G. and Müller, R. (2002)
The biosynthesis of the aromatic myxobacterial electron transport inhibitor stigmatellin is directed by a novel type of modular polyketide synthase
J. Biol. Chem. 277:13082-13090

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Abd El-Mawla, A.M.A., Beerhues, L. (2002)
Benzoic acid biosynthesis in cell cultures of Hypericum androsaemum.
Planta 214:727-733

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Mahmud, T., Bode, H. B., Silakowski, B., Kroppenstedt, R. M., Xu, M., Nordhoff, S., Höfle, G. and Müller, R. (2002)
A novel biosynthetic pathway providing precursors for fatty acid biosynthesis and secondary metabolite formation in myxobacteria
J. Biol. Chem. 277:32768-32774

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Hansen, C.H., Wittstock, U., Olsen, C.E., Hick, A.J., Pickett, J.A., Halkier, B.A. (2001)
Cytochrome P450 CYP79F1 from Arabidopsis catalyzes the conversion of dihomomethionine and trihomomethionine to the corresponding aldoximes in the biosynthesis of aliphatic glucosinolates.
J. Biol. Chem. 276:11078-11085

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Ober, D. (2001)
Warum gibt es Gift- und Arzneipflanzen? Die Evolution des pflanzlichen Sekundärstoffwechsels am Beispiel der Pyrrolizidin-Alkaloide
Deutsche Apotheker Zeitung 141:2127-2131

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Buss, K., Müller, R., Dahm, C., Gaitatzis, N., Skrypczak-Pietrszek, E., Lohmann, S., Gassen, M. and Leistner, E. (2001)
Clustering of isochorismate synthase genes menF and entC and channeling of isochorismate in Escherichia coli
Biochim. Biophys. Acta 1522:151-157

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Silakowski, B., Kunze, B. and Müller, R. (2001)
Multiple hybrid polyketide synthase/non-ribosomal peptide synthetase gene clusters the myxobacterium Stigmatella aurantiaca
Gene 275:233-240

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Gaitatzis, N., Kunze, B. and Müller, R. (2001)
In vitro reconstitution of the myxochelin biosynthetic machinery of Stigmatella aurantiaca Sg a15: Biochemical characterisation of a reductive release mechanism from non-ribosomal peptide synthetases
Proc. Nat. Acad. Sci. (USA) 98:11136-11141

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Pasteels, J. M., Termonia, A., Windsor, D. M., Witte, L., Theuring, C., Hartmann, T. (2001)
Pyrrolizidine alkaloids and pentacyclic triterpene saponins in the defensive secretions of Platyphora leaf beetles
Chemoecology 11:113-120

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Abd El-Mawla, A.M.A., Schmidt, W., Beerhues, L. (2001)
Cinnamic acid is a precursor of benzoic acids in cell cultures of Hypericum androsaemum L. but not in cell cultures of Centaurium erythraea RAFN.
Planta 212:288-293

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Beerhues, L. (2001)
Jagdgift und Arznei. Gifte aus tropischen Pflanzen und Tieren als Herzglykoside, Muskelrelaxanzien und Analgetika.
Deutsche Apotheker Zeitung 141:163-173

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Silakowski, B., Nordsiek, G., Kunze, B., Blöcker, H. and Müller, R. (2001)
Novel features in a combined polyketide synthase/non-ribosomal peptide synthetase: The myxalamid biosynthetic gene cluster of the myxobacterium Stigmatella aurantiaca Sg a15
Chem. & Biol. 8:59-69

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Hartmann, T., Theuring, C., Witte, L., Pasteels, J. M. (2001)
Sequestration, metabolism and partial synthesis of tertiary pyrrolizidine alkaloids by the neotropical leaf-beetle Platyphora boucardi
Insect Biochem. Mol. Biol. 31:1041-56

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Gaitatzis, N., Hans, A., Müller, R. and Beyer, S. (2001)
The mtaA gene of the myxothiazol biosynthetic gene clusterfrom Stigmatella aurantiaca DW4/3-1 encodes a phosphopantetheinyl transferase that activates polyketide synthases and polypeptide synthetases
J. Biochemistry 129:119-124

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Yu, T., Müller, R., Müller, M., Zhang, X., Dräger, G., Kim, C-G., Leistner, E. and Floss, H.G. (2001)
Mutational analysis and reconstituted expression of the biosynthetic genes involved in the formation of 3-amino-5-hydroxybenzoic acid, the starter unit of rifamycin biosynthesis in Amycolatopsis mediterranei
J. Biol. Chem. 276:12546-12555

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Mikkelsen, M.D., Hansen, C.H Wittstock, U., Halkier, B.A. (2000)
Cytochrome P450 CYP79B2 from Arabidopsis catalyzes the conversion of tryptophan to indole-3-acetaldoxime, a precursor of indole glucosinolates and indole-3-acetic acid.
J. Biol. Chem. 275:33712-33717

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Ober, D., Hartmann, T. (2000)
Phylogenetic origin of a secondary pathway: The case of pyrrolizidine alkaloids
Plant Mol. Biol. 44:445-450

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Wittstock, U., Halkier, B.A. (2000)
Cytochrome P450 CYP79A2 from Arabidopsis thaliana L. catalyzes the conversion of L-phenylalanine to phenylacetaldoxime in the biosynthesis of benzylglucosinolate.
J. Biol. Chem. 275:14659-14666

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Ober, D., Harms, R., Hartmann, T. (2000)
Cloning and expression of homospermidine synthase from Senecio vulgaris: A revision
Phytochemistry 55:305-309

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Wittstock, U., Chen, S., Halkier, B.A. (2000)
A method for expression cloning of transporter genes by screening yeast for uptake of radiolabelled substrate.
J. Exp. Bot. 51:955-960

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Hartmann, T., Ober, D. (2000)
Biosynthesis and metabolism of pyrrolizidine alkaloids in plants and specialized insect herbivores
Top. Curr. Chem. Springer, Berlin [u.a.], 209:207-244

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Wittstock, U., Fischer, M., Svendsen, I., Halkier, B.A. (2000)
Cloning and characterization of two cDNAs encoding sulfatases in the Roman snail Helix pomatia.
IUBMB Life 49:71-76

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Silakowski, B., Kunze, B. and Müller, R. (2000)
Stigmatella aurantiaca Sg a15 contains genes encoding type I and type II 3-deoxy-D-arabino-heptulosonate-7-phosphate synthases: involvement of a type II synthase in aurachin biosynthesis
Arch. Microbiol. 173:403-411

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Schmidt, W., Abd El-Mawla, A.M.A., Wolfender, J.L., Hostettmann, K., Beerhues, L. (2000)
Xanthones in cell cultures of Hypericum androsaemum.
Planta Med. 66:380-381

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Barillas, W., Beerhues, L. (2000)
3-Hydroxybenzoate:coenzyme A ligase from cell cultures of Centaurium erythraea: Isolation and characterization.
Biol. Chem. 381:155-160

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Schmidt, W., Peters, S., Beerhues, L. (2000)
Xanthone 6-hydroxylase from cell cultures of Centaurium erythraea RAFN and Hypericum androsaemum L.
Phytochemistry 53:427-431

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Müller, R., Gerth, K., Brand, P., Blöcker, H. and Beyer, S. (2000)
Identification of an L-dopa decarboxylase gene from Sorangium cellulosum So ce90
Arch. Microbiol. 173:303-306

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Dobler, S., Haberer, W. ,Witte, L., Hartmann, T. (2000)
Selective sequestration of pyrrolizidine alkaloids from diverse host plants by Longitarsus flea beetles
J. Chem. Ecol. 26:1281-1298

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Graser, G., Hartmann, T. (2000)
Biosynthesis of spermidine, a direct precursor of pyrrolizidine alkaloids in root cultures of Senecio vulgaris L
Planta 211:239-245

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Silakowski, B., Kunze, B., Nordsiek, G., Blöcker, H., Höfle, G. and Müller, R. (2000)
The myxochelin iron transport regulon of the myxobacterium Stigmatella aurantiaca Sg a15
Eur. J. Biochem. 267:6476-6485

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Brückmann, M., Trigo, J. R., Foglio, M. A., Hartmann, T. (2000)
Storage and metabolism and radioactively labeled pyrrolizidine alkaloids by butterflys and larvae of Mechanitis polymnia (Lepidoptera: Nymphalidae, Ithomiinae)
Chemoecology 10:25-32

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Ober, D., Hartmann, T. (1999)
Homospermidine synthase, the first pathway-specific enzyme of pyrrolizidine alkaloid biosynthesis, evolved from deoxyhypusine synthase
Proc. Natl. Acad. Sci. U. S. A. 96:14777-14782

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Ober, D., Hartmann, T. (1999)
Deoxyhypusine synthase from tobacco: cDNA isolation, characterization, and bacterial expression of an enzyme with extended substrate specificity
J. Biol. Chem. 274:32040-32047

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Beuerle,T., Engelhard,S., Bicchi, C., Schwab,W. (1999)
Isolation, identification, and enantioselective synthesis of octane-1,3,7-triol: Determination of its absolute configuration
Journal of Natural Products 62:35-40

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Beuerle,T., Schwab, W. (1999)
Metabolic profile of linoleic acid in stored apples: Formation of 13(R)-hydroxy-9(Z),11(E)-octadecadienoic acid
Lipids 34:375-380

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Beuerle,T., Schwab,W. (1999)
Biosynthesis of R-(+)-octane-1,3-diol. Crucial role of beta-oxidation in the enantioselective generation of 1,3-diols in stored apples.
Lipids 34:617-625

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Kavvadias,D., Beuerle,T., Wein,M., Boss,B., König,T., Schwab,W. (1999)
Novel 1,3-dioxanes from apple juice and cider
Journal of Agriculture and Food Chemistry 47:5178-5183

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Silakowski, B., Schairer, H. U., Ehret, H., Kunze, B., Weinig, S., Norsiek, G., Blöcker, H., Höfle, G., Beyer, S. and Müller, R. (1999)
New lessons for combinatorial biosynthesis from Myxobacteria: The myxothiazol biosynthetic gene cluster of Stigmatella aurantiaca DW4/3-1
J. Biol. Chem. 274:37391-37399

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Beyer, S., Kunze, B., Silakowski, B. and Müller, R. (1999)
Metabolic diversity in myxobacteria – identification of the myxalamid and the stigmatellin biosynthetic gene cluster of Stigmatella aurantiaca Sg a15 and a combined polyketide-(poly)peptide gene cluster from the epothilon producing strain Sorangium cellulosum So ce90
Biochim. Biophys. Acta 1445:185-195

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Weber, S.,Eisenreich, W.,Bacher, A.,Hartmann, T. (1999)
Pyrrolizidine alkaloids of the lycopsamine type: Biosynthesis of trachelanthic acid
Phytochemistry 50:1005-1014

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Chen, S., von Bamberg, D., Hale, V., Breuer, M., Hardt, B., Müller, R., Floss, H.G., Reynolds, K.A. and Leistner, E. (1999)
Biosynthesis of ansatrienin (mycotrienin) and naphtomycin: Identification and analysis of two separate biosynthetic gene clusters in Streptomyces collinus TÜ 1892. 261, 98-
Eur. J. Biochem. 261:98-107

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Ehmke, A.,Rahier, M.,Pasteels, J. M.,Theuring, C.,Hartmann, T. (1999)
Sequestration, maintenance, and tissue distribution of pyrrolizidine alkaloid N-oxides in larvae of two Oreina species
J. Chem. Ecol. 25:2385-2395

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Beerhues, L., Barillas, W., Peters, S., Schmidt, W. (1999)
Biosynthesis of plant xanthones.
Bioorganic Chemistry. Highlights and New Aspects (Diederichsen, U., Lindhorst, T.K., Wessjohann, L., Westermann, B.) Wiley-VCH, Weinheim:322-328

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Hartmann, T. (1999)
Chemical ecology of pyrrolizidine alkaloids
Planta 207:483-495

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Tofern, B.,Kaloga, M.,Witte, L.,Hartmann, T.,Eich, E. (1999)
Occurrence of loline alkaloids in Argyreia mollis (Convolvulaceae)
Phytochemistry 51:1177-1180

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Gomez, N. E.,Witte, L.,Hartmann, T. (1999)
Chemical defense in larval tortoise beetles: Essential oil composition of fecal shields of Eurypedus nigrosignata and foliage of its host plant, Cordia curassavica
J. Chem. Ecol. 25:1007-1027

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Hartmann, T.,Theuring, C.,Schmidt, J.,Rahier, M.,Pasteels, J. M. (1999)
Biochemical strategy of sequestration of pyrrolizidine alkaloids by adults and larvae of chrysomelid leaf beetles
J. Insect Physiol. 45:1085-1095

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Brunerie,P., Beuerle,T., Schreier,P., Schwab, W. (1998)
C8-Diols as Precursors of New Flavouring Acetals in Apples
Natural Product Analysis, Eds., Schreier,P., Herderich,M., Humpf,H.-U., Schwab,W. Vieweg, Braunschweig :345-351

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Schwab,W., Beuerle,T., Roscher,R. (1998)
Radiotracer Techniques in Biosynthetic Studies of Flavour Compounds
Natural Product Analysis, Eds. Schreier,P., Herderich,M., Humpf,H.-U. and Schwab ,W. Vieweg, Braunschweig:289-297

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Tinney, G.,Theuring, C.,Paul, N.,Hartmann, T. (1998)
Effects of rust infection with Puccinia lagenophorae on pyrrolizidine alkaloids in Senecio vulgaris
Phytochemistry 49:1589-1592

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Jenett-Siems, K.,Schimming, T.,Kaloga, M.,Eich, E.,Siems, K.,Gupta, M. P.,Witte, L.,Hartmann, T. (1998)
Phytochemistry and chemotaxonomy of the Convolvulaceae: Pyrrolizidine alkaloids of Ipomoea hederifolia and related species
Phytochemistry 47:1551-1560

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Peters, S., Schmidt, W., Beerhues, L. (1998)
Regioselective oxidative phenol couplings of 2,3’,4,6-tetrahydroxybenzophenone in cell cultures of Centaurium erythraea RAFN and Hypericum androsaemum L.
Planta 204:64-69

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August, P. R., Tang, L., Yoon, Y.J., Ning, S., Müller, R., Yu, T., Taylor, M., Hoffmann, D., Kim, C-G., Zhang, X., Hutchinson, C.R. and Floss, H.G. (1998)
Biosynthesis of the ansamycin antibiotic rifamycin: Deductions from the molecular analysis of the rif biosynthetic gene cluster of Amycolatopsis mediterranei S699
Chem. Biol. 5:69-79

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Müller, M., Müller, R., Yu, T. and Floss, H.G. (1998)
Synthesis of (-)-3-amino-3-deoxyquinic acid
J. Org. Chem. 63:9753-9755

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Dahm, C., Müller, R., Schulte, G., Schmidt, K. and Leistner, E. (1998)
The role of isochorismate hydroxymutase genes entC aned menF in enterobactin and menaquinone biosynthesis in Escherichia coli
Biochim. Biophys. Acta 1425:377-386

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Chang, A.,Hartmann, T. (1998)
Solubilization and characterization of a senecionine N-oxygenase from Crotalaria scassellatii seedlings
Phytochemistry 49:1859-1866

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Graser, G.,Witte, L.,Robins, D. J.,Hartmann, T. (1998)
Incorporation of chirally deuterated putrescines into pyrrolizidine alkaloids: A reinvestigation
Phytochemistry 47:1017-1024

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Hartmann, T.,Dierich, B. (1998)
Chemical diversity and variation of pyrrolizidine alkaloids of the senecionine type: Biological need or coincidence?
Planta 206:443-451

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Wittstock, U., Lichtnow, K.H., Teuscher, E. (1997)
Effects of cicutoxin and related polyacetylenes from Cicuta virosa on neuronal action potentials: a comparative study on the mechanism of the convulsive action
Planta Med. 63:120-124

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Beuerle,T., Schwab,W. (1997)
Biosynthesis and Metabolism of C8-Diols in Apples
5th Wartburg-Symposium Flavour Perception Aroma Evaluation, H.-P. Kruse and M. Rothe (Eds.) Eigenverlag Universität Potsdam:381-390

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Beuerle,T., Schwab,W. (1997)
Octane-1,3-diol and its derivatives from pear fruits
Zeitschrift fur Lebensmittel-Untersuchung und-Forschung A -food research and technology 205:215-217

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Beuerle,T., Schreier,P., Schwab,W. (1997)
(R)-3-hydroxy-5(Z)-octenyl beta-D-glucopyranoside from Malus sylvestris fruits
Natural Product Letters 10:119-124

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Dietrich,C., Beuerle,T., Withopf,B., Schreier,P., Brunerie,P., Bicchi,C., Schwab,W. (1997)
Absolute configuration and conformation of 1,3-dioxanes from cider
Journal of Agriculture and Food Chemistry 45:3178-3182

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Verhoeven,H., Beuerle,T., Schwab,W. (1997)
Solid-phase microextraction: Artefact formation and its avoidance
Chromatgraphia 46: 63-66

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Beuerle,T., Schwab,W. (1997)
Biosynthesis of octane-1,3-diol in apple fruit
Phytochemistry 45:1153-1155

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Beuerle,T., Withopf,B., Schwab,W. (1997)
Evaporative Light Scattering Detector (ELSD): Versatile Tool for the Analysis of Flavour Precursors
5th Wartburg Symposium Flavour Perception Aroma Evaluation, H.-P. Kruse and M. Rothe (Eds.) Eigenverlag Universität Potsdam:487-491

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Lindigkeit, R.,Biller, A.,Buch, M.,Schiebel, H. M.,Boppre, M.,Hartmann, T. (1997)
The two faces of pyrrolizidine alkaloids: The role of the tertiary amine and its N-oxide in chemical defense of insects with acquired plant alkaloids
Eur. J. Biochem. 245:626-636

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Graser, G.,Hartmann, T. (1997)
Biosynthetic incorporation of the aminobutyl group of spermidine into pyrrolizidine alkaloids
Phytochemistry 45:1591-1595

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Hartmann, T.,Witte, L.,Ehmke, A.,Theuring, C.,Rowell-Rahier, M.,Pasteels, J. M. (1997)
Selective sequestration and metabolism of plant derived pyrrolizidine alkaloids by chrysomelid leaf beetles
Phytochemistry 45:489-497

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Justus, M.,Witte, L.,Hartmann, T. (1997)
Levels and tissue distribution of loline alkaloids in endophyte-infected Festuca pratensis
Phytochemistry 44:51-57

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Beerhues, L., Barillas, W., Peters, S., Schmidt, W. (1997)
Xanthone biosynthesis in plant cell cultures.
Recent research developments in phytochemistry (Pandalai, D.) Research Signpost, Trivandrum:69-76

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Ledüc, C., Birgel, I., Müller, R. and Leistner, E. (1997)
Isochorismate hydroxymutase from a cell-suspension culture of Galium mollugo L. Planta
Planta 202:206-210

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Barillas, W., Beerhues, L. (1997)
3-Hydroxybenzoate:coenzyme A ligase and 4-coumarate:coenzyme A ligase from cultured cells of Centaurium erythraea.
Planta 202:112-116

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Schmidt, W., Beerhues, L. (1997)
Alternative pathways of xanthone biosynthesis in cell cultures of Hypericum androsaemum L.
FEBS Lett. 420:143-146

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Tholl, D., Ober, D., Martin, W., Kellermann, J., Hartmann, T. (1996)
Purification, molecular cloning and expression in Escherichia coli of homospermidine synthase from Rhodopseudomonas viridis
Eur. J. Biochem. 240:373-379

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Miller, T., Wittstock, U., Teuscher, E. (1996)
Effects of some compounds of the essential oil of chamomile, Chamomilla recutita (L.) RAUSCHERT, on histamine release from rat mast cells
Planta Med. 62:60-61

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Strauß, U., Wittstock, U., Teuscher, E., Jung, S., Mix, E. (1996)
Cicutoxin from Cicuta virosa - a new and potent potassium channel blocker in T lymphocytes.
Biochem. Biophys. Res. Commun. 219:332-336

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Ober, D.,Tholl, D.,Martin, W.,Hartmann, T. (1996)
Homospermidine synthase of Rhodopseudomonas viridis: Substrate specificity and effects of the heterologously expressed enzyme on polyamine metabolism of Escherichia coli
J. Gen. Appl. Microbiol. 42:411-419

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Beuerle,T., Schreier,P., Brunerie,P., Bicchi,C., Schwab,W. (1996)
Absolute configuration of octanol derivatives in apple fruits.
Phytochemistry 43:145-149

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Orr, A. G.,Trigo, J. R.,Witte, L.,Hartmann, T. (1996)
Sequestration of pyrrolizidine alkaloids by larvae of Tellervo zoilus (Lepidoptera: Ithomiinae) and their role in the chemical protection of adults against the spider Nephila maculata (Araneidae)
Chemoecology 7:68-73

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Freitas, A. V. L.,Trigo, J. R.,Brown, K. S.,Witte, L.,Hartmann, T.,Barata, L. E. S. (1996)
Tropane and pyrrolizidine alkaloids in the ithomiines Placidula euryanassa and Miraleria cymothoe (Lepidoptera: Nymphalidae)
Chemoecology 7:61-67

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Trigo, J. R.,Brown, K. S., Jr.,Witte, L.,Hartmann, T.,Ernst, L.,Barata, L. E. S. (1996)
Pyrrolizidine alkaloids: Different acquisition and use patterns in Apocynaceae and Solanaceae feeding ithomiine butterflies (Lepidoptera: Nymphalidae)
Bot. J. Linn. Soc. 58:99-123

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Pasteels, J. M., Rowell-Rahier, M., Ehmke, A., Hartmann, T. (1996)
Host-derived pyrrolizidine alkaloids in Oreina leaf beetles: Physiological, ecological and evolutionary aspects
Chrysomelidae Biology, (eds. P. Jolivet, M. L. Cox) :213-225, Academic Publishing, Amsterdam

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Hartmann, T. (1996)
Diversity and variability of plant secondary metabolism: A mechanistic view
Entomol. Exp. Appl. 80:177-188

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Beerhues, L. (1996)
Benzophenone synthase from cultured cells of Centaurium erythraea.
FEBS Lett. 383:264-266

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Müller, R., Dahm, C., Schulte, G. and Leistner, E. (1996)
An isochorismate hydroxymutase isogene in Escherichia coli
FEBS Letters 378:131-134

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Müller, R., Kuttler, E., Lanz, C., Drewke, C. and Schmidt, K. (1996)
Isolation of a gene encoding cysteine synthase from Flavobacterium K3-15
FEMS Microbiol. Letters 136:305-308

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Müller, R., Breuer, M., Wagener, A., Schmidt, K. and Leistner, E. (1996)
Bacterial production of trans-dihydroxycyclohexadiene carboxylates by metabolic pathway engineering
Microbiology 142:1005-1012

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Drewke, C., Klein, M., Clade, D., Arenz, A., Müller, R. and Leistner, E. (1996)
4-O-Phosphoryl-L-threonine, a substrate of the pdxC (serC) gene product involved in vitamin B6 biosynthesis
FEBS Letters 390:179-182

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Wittstock, U., Hadacek, F., Wurz, G., Teuscher, E., Greger, H. (1995)
Polyacetylenes from water hemlock, Cicuta virosa L.
Planta Med. 61:439-445

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Pasteels, J. M.,Dobler, S.,Rowell-Rahier, M.,Ehmke, A.,Hartmann, T. (1995)
Distribution of autogenous and host-derived chemical defenses in Oreina leaf beetles (Coleoptera: Chrysomelidae)
J. Chem. Ecol. 21:1163-1179

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Van Dam, N. M.,Witte, L.,Theuring, C.,Hartmann, T. (1995)
Distribution, biosynthesis and turnover of pyrrolizidine alkaloids in Cynoglossum officinale
Phytochemistry 39:287-292

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Hartmann, T.,Witte, L. (1995)
Pyrrolizidine alkaloids: Chemical, biological and chemoecological aspects
In: Alkaloids: Chemical and Biological Perspectives (ed. S. W. Pelletier) vol. 9:155-233, Pergamon Press, Oxford

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Hartmann, T. (1995)
Pyrrolizidine alkaloids between plants and insects: A new chapter of an old story
Chemoecology 5/6:139-146

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Schöpker, H., Kneisel, M., Beerhues, L., Robenek, H., Wiermann, R. (1995)
Phenylalanine ammonia-lyase and chalcone synthase in glands of Primula kewensis (W. Wats): immunofluorescence and immunogold localization.
Planta 196:712-719

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Müller, R., Wagener, A., Schmidt, K. and Leistner, E. (1995)
Microbial production of specifically ring-13C-labelled 4-hydroxybenzoic acid
Appl. Microbiol. Biotechnol. 43:985-988

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Beerhues, L., Berger, U. (1995)
Differential accumulation of xanthones in methyl-jasmonate- and yeast-extract-treated cell cultures of Centaurium erythraea and C. littorale.
Planta 197:608-612

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Böttcher, F., Ober, D., Hartmann, T. (1994)
Biosynthesis of pyrrolizidine alkaloids: Putrescine and spermidine are essentail substrates of enzymatic homospermidine formation
Can. J. Chem. 72:80-85

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Beerhues, L. (1994)
Constitutive and elicitor-induced xanthones in cell cultures of Centaurium erythraea and Centaurium littorale.
Acta Horticulturae 381:250-256

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Hartmann, T. (1994)
Pyrrolizidine alkaloids as defensive molecules of plants and adapted insects.
In: Proceedings BIO JAPAN '94 OSAKA, Int. Conf. Biotechnology : 62-69

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Biller, A.,Boppre, M.,Witte, L.,Hartmann, T. (1994)
Pyrrolizidine alkaloids in Chromolaena odorata: Chemical and chemoecological aspects
Phytochemistry 35:615-619

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Hartmann, T. (1994)
Senecio spp.: Biochemistry of the formation of pyrrolizidine alkaloids in root cultures
In: Biotechnology in Agriculture and Forestry, Medicinal and Aromatic Plants VI, (ed. Y. P. S. Bajaj) vol. 26:339-355, Springer, Berlin, Heidelberg

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Beerhues, L., Kombrink, E. (1994)
Primary structure and expression of mRNAs encoding basic chitinase and 1,3-ß-glucanase in potato.
Plant Mol. Biol. 24:353-367

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Beerhues, L., Berger, U. (1994)
Xanthones in cell suspension cultures of two Centaurium species.
Phytochemistry 35:1227-1231

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Karwatzki, B., Herget, A., Beerhues, L., Wiermann, R. (1993)
In situ localization of chalcone synthase in tannin-containing plants.
Phytochemistry 32:585-590

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Kombrink, E., Beerhues, L., Garcia-Garcia, F., Hahlbrock, K., Müller, M., Schröder, M., Witte, B., Schmelzer, E. (1993)
Expression patterns of defense-related genes in infected and uninfected plants.
Mechanisms of plant defense responses (Fritig, B., Legrand, M.) Kluwer Academic Publishers:236-249

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Trigo, J. R.,Witte, L.,Brown, K. S., Jr.,Hartmann, T.,Barata, L. E. S. (1993)
Pyrrolizidine alkaloids in the arctiid moth Hyalurga syma
J. Chem. Ecol. 19:669-679

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Witte, L.,Rubiolo, P.,Bicchi, C.,Hartmann, T. (1993)
Comparative analysis of pyrrolizidine alkaloids from natural sources by gas chromatography-mass spectrometry
Phytochemistry 32:187-196

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Böttcher, F.,Adolph, R. D.,Hartmann, T. (1993)
Homospermidine synthase, the first pathway-specific enzyme in pyrrolizidine alkaloid biosynthesis
Phytochemistry 32:679-689

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Beerhues, L., Rittscher, M., Schöpker, H., Schwerdtfeger, C., Wiermann, R. (1993)
The significance of the anther tapetum in the biochemistry of pollen pigmentation - an overview.
Pl. Syst. Evol. [Suppl.] 7:117-125

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Kombrink, E., Beerhues, L., Hahlbrock, K., Müller, M., Schröder, M., Witte, B. (1993)
Differential activation of defense-related genes in potato following infection by Phytophthora infestans.
Proceedings of the 10th international symposium on systemic fungicides and antifungal compounds (Lyr, H., Polter, C.) Eugen Ulmer:251-257

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Proksch, P.,Witte, L.,Wray, V.,Hartmann, T. (1993)
Ontogenetic variation of defensive alkaloids in the Mexican bean beetle Epilachna varivestis (Coleoptera: Coccinellidae)
Entomol. Gener. 18:1-7

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Witte, L.,Ernst, L.,Wray, V.,Hartmann, T. (1992)
Revised structure of the main alkaloid of Senecio adonidifolius
Phytochemistry 31:1027-1028

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Rommeswinkel, M., Karwatzki, B., Beerhues, L., Wiermann, R. (1992)
Immunofluorescence localization of chalcone synthase in roots of Pisum sativum L. and Phaseolus vulgaris L. and comparable immunochemical analysis of chalcone synthase from pea leaves.
Protoplasma 166:115-121

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Hartmann, T. (1992)
Alkaloids: biochemistry, physiology and chemical ecology by example of the pyrrolizidine alkaloids
In:Frontiers and new horizont in amino acid reserach (ed. Takai, K) Proc. 1st Biennial Int. Conf. on Amino Acid Research :pp. 65-76, Elsevier Science Publishers, Amsterdam

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Pasteels, J. M.,Eggenberger, F.,Rowell-Rahier, M.,Ehmke, A.,Hartmann, T. (1992)
Chemical defense in chrysomelid leaf beetles. Storage of host-derived pyrrolizidine alkaloids versus de novo synthesized cardenolides
Naturwissenschaften 79:521-523

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Beerhues, L. (1992)
Pflanzliche Strategien der Pathogenabwehr - Biochemische und molekulargenetische Grundlagen.
Deutsche Apotheker Zeitung 132:2486-2491

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Witte, L.,Ernst, L.,Adam, H.,Hartmann, T. (1992)
Chemotypes of two pyrrolizidine alkaloid-containing Senecio spp
Phytochemistry 31:559-566

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Ehmke, A.,Rowell-Rahier, M.,Pasteels, J. M.,Hartmann, T. (1991)
Sequestration of ingested [14C]senecionine N-oxide in the exocrine defensive secretions of chrysomelid beetles
J. Chem. Ecol. 17:2367-2380

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Kombrink, E., Beerhues, L., Hahlbrock, K., Witte, B. (1991)
Differential patterns of expression and cellular localization of chitinases and 1,3-ß-glucanases in potato.
Proceedings of the 14th annual Riverside symposium in plant physiology (Huang, A.H.C., Taiz, L.) American Society of Plant Physiologists, Rockville:243-244

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Hartmann, T. (1991)
Pharmazeutische Biologie
In: Angewandte Biologie (Eds. D. Klämbt, H. Kreiskott, B. Streit) :pp. 221-237, VCH Verlagsgesellschaft, Weinheim

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Sumaryono, W.,Proksch, P.,Wray, V.,Witte, L.,Hartmann, T. (1991)
Qualitative and quantitative analysis of the phenolic constituents from Orthosiphon aristatus
Planta Med. 57:176-180

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Sumaryono, W.,Proksch, P.,Hartmann, T.,Nimtz, M.,Wray, V. (1991)
Induction of rosmarinic acid accumulation in cell suspension cultures of Orthosiphon aristatus after treatment with yeast extract
Phytochemistry 30:3267-3272

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Hartmann, T. (1991)
Alkaloids
In: Herbivores: Their Interactions with Secondary Plant Metabolites. (eds. G.A. Rosenthal, M. R. Berenbaum) vol. 1:pp. 79-121, Academic Press, San Diego

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Rowell-Rahier, M.,Witte, L.,Ehmke, A.,Hartmann, T.,Pasteels, J. M. (1991)
Sequestration of plant pyrrolizidine alkaloids by chrysomelid beetles and selective transfer into the defensive secretions
Chemoecology 2:41-48

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Ehmke, A.,Witte, L.,Biller, A.,Hartmann, T. (1990)
Sequestration, N-oxidation and transformation of plant pyrrolizidine alkaloids by the arctiid moth Tyria jacobaeae L
Z. Naturforsch. 45c:1185-1192

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Witte, L.,Ehmke, A.,Hartmann, T. (1990)
Interspecific flow of pyrrolizidine alkaloids from plants via aphids to ladybirds
Naturwissenschaften 77:540-543

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Hartmann, T.,Biller, A.,Witte, L.,Ernst, L.,Boppre, M. (1990)
Transformation of plant pyrrolizidine alkaloids into novel insect alkaloids by arctiid moths (Lepidoptera)
Biochem. Syst. Ecol. 18:549-554

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Pieters, L. A.,Hartmann, T.,Janssens, J.,Vlietinck, A. J. (1989)
Comparison of capillary gas chromatography with 1H and 13C nuclear magnetic resonance spectroscopy for the quantitation of pyrrolizidine alkaloids from Senecio vernalis
J. Chromatogr. 462:387-91

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Beerhues, L., Forkmann, G., Schöpker, H., Stotz, G., Wiermann, R. (1989)
Flavanone 3-hydroxylase and dihydroflavonol oxygenase activities in anthers of Tulipa. The significance of the tapetum fraction in flavonoid metabolism.
J. Plant Physiol. 133:743-746

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Lembach, A., Beerhues, L., Wiermann, R. (1989)
In situ localization of chalcone synthase in Larix needles by indirect immunofluorescence.
Protoplasma 153:58-61

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Sander, H.,Hartmann, T. (1989)
Site of synthesis, metabolism and translocation of senecionine N-oxide in cultured roots of Senecio erucifolius
Plant Cell Tissue Organ Cult. 18:19-32

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von Borstel, K.,Witte, L.,Hartmann, T. (1989)
Pyrrolizidine alkaloid patterns in populations of Senecio vulgaris, Senecio vernalis and their hybrids
Phytochemistry 28:1635-1638

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Ehmke, A., Proksch, P.,Witte, L., Hartmann, T., Ismann, M.B. (1989)
Fate of ingested pyrrolizidine alkaloid N-oxide in the grasshopper Melanoplus sanguinipes
Naturwissenschaften 76:27-29

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Hartmann, T.,Ehmke, A.,Eilert, U.,von Borstel, K.,Theuring, C. (1989)
Sites of synthesis, translocation and accumulation of pyrrolizidine alkaloid N-oxides in Senecio vulgaris L
Planta 177:98-107

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Hartmann, T. (1988)
Quinolizidines and Pyrrolizidines
Cell Cultures and Somatic Cell Genetics of Plants, (eds. Constabel, F., Vasil, I.K.) vol. 5:277-288, Academic Press, New York

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Beerhues, L., Wiermann, R. (1988)
Chalcone synthases from spinach (Spinacia oleracea L.). I. Purification, peptide patterns, and immunological properties of different forms.
Planta 173:532-543

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Beerhues, L., Robenek, H., Wiermann, R. (1988)
Chalcone synthases from spinach (Spinacia oleracea L.). II. Immunofluorescence and immunogold localization.
Planta 173:544-553

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Beerhues, L., Robenek, H., Wiermann, R. (1988)
Chalcone synthase forms from spinach: In situ localization by immunofluorescence and immunogold labeling.
Proceedings of the 14th international conference of Groupe Polyphenols Groupe Polyphenols, Narbonne:57-60

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Ehmke, A.,von Borstel, K.,Hartmann, T. (1988)
Alkaloid N-oxides as transport and vacuolar storage compounds of pyrrolizidine alkaloids in Senecio vulgaris L
Planta 176:83-90

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Toppel, G.,Witte, L.,Hartmann, T. (1988)
N-oxidation and degradation of pyrrolizidine alkaloids during germination of Crotalaria scassellatii
Phytochemistry 27:3757-3760

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Hartmann, T. (1988)
Secondary metabolism of lupins: Biosynthesis, translocation and accumulation of the quinolizidine alkaloids
Proc. 5th Int. Lupin Conf. (Poznan, July 5-8, 1988) :pp. 64-78, PWRiL, Poznan

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Hartmann, T.,Sander, H.,Adolph, R. D.,Toppel, G. (1988)
Metabolic links between the biosynthesis of pyrrolizidine alkaloids and polyamines in root cultures of Senecio vulgaris
Planta 175:82-90

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Ehmke, A.,von Borstel, K.,Hartmann, T. (1987)
Specific uptake of the N-oxides of pyrrolizidine alkaloids by cells, protoplasts and vacuoles from Senecio cell cultures
In: Plant vacuoles, their importance in solute compartment in cells and their appl in plant biotech. (ed. Marine, B) :pp. 301-304, Plenum Press, New York

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Hartmann, T.,Toppel, G. (1987)
Senecionine N-oxide, the primary product of pyrrolizidine alkaloid biosynthesis in root cultures of Senecio vulgaris
Phytochemistry 26:1639-1644

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Toppel, G.,Witte, L.,Riebesehl, B.,von Borstel, K.,Hartmann, T. (1987)
Alkaloid patterns and biosynthetic capacity of root cultures from some pyrrolizidine alkaloid producing Senecio spp
Plant Cell Rep. 6:466-469

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Proksch, P.,Isman, M. B.,Witte, L.,Hartmann, T. (1987)
Metabolites of insecticidal chromenes from the migratory grasshopper Melanoplus sanguinipes
Phytochemistry 26:2227-2230

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Hartmann, T. (1987)
Warum gibt es so viele Arzneipflanzen? Zur Rolle des pflanzlichen Sekundärstoffwechsels
Deutsche Apotheker Zeitung 127:2523-2527

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Hartmann, T.,Zimmer, M. (1986)
Organ-specific distribution and accumulation of pyrrolizidine alkaloids during the life history of two annual Senecio species
J. Plant Physiol. 122:67-80

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von Borstel, K.,Hartmann, T. (1986)
Selective uptake of pyrrolizidine N-oxides by cell suspension cultures from pyrrolizidine alkaloid producing plants
Plant Cell Rep. 5:39-42

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Hartmann, T.,Witte, L.,Oprach, F.,Toppel, G. (1986)
Reinvestigation of the alkaloid composition of Atropa belladonna plants root cultures and cell suspension cultures
Planta Med. 5:390-395

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Oprach, F.,Hartmann, T. (1986)
Zur Rolle des Tropanols als Reinheitskriterium der Solanaceen-Drogen nach Ph. Eur.
Deutsche Apotheker Zeitung 126:643-644

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Proksch, P.,Palmer, J.,Hartmann, T. (1986)
Metabolism and bioconversion of chromene derivatives in Ageratina adenophora (Asteraceae)
Planta 169:130-134

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Hartmann, T.,Ehmke, A. (1986)
Metabolism of organic N-compounds
Progress in Botany 48:124-132

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Beerhues, L., Wiermann, R. (1985)
Two different chalcone synthase activities from spinach.
Z. Naturforsch. 40c:160-165

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Wink, M., Hartmann, T. (1985)
Enzymology of quinolizidine alkaloid biosynthesis
In: Natural Products Chemistry (eds. Zalewsky, R. I., Skolik, J.J.) 14th IUPAC Symp. Poznan, Poland, :pp- 511-520, Elsevier, Amsterdam

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Hartmann, T. (1985)
Prinzipien des pflanzlichen Sekundärstoffwechsels
Pl. Syst. Evol. 150:15-34

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Hartmann, T., Bax, K., Scholz, R. (1984)
Aliphatic L-amino acid decarboxylase from ferns (Filicopsida).
Z. Naturforsch. 39c:24-30

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Hartmann,T., Ehmke, A. (1984)
Metabolism of organic N-compounds. Ammonium assimilation and amino acid metabolism.
Progress in Botany 46:104-118

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Ehmke, A., Scheid, H.-W., Hartmann, T. (1984)
Glutamate dehydrogenase of Pisum sativum: Heat-dependent interconversion of multiple forms.
Z. Naturforsch. 39c:227-260

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Hatzold, T., Elmadfa, I., Gross, R., Wink, M., Hartmann, T., Witte, L. (1983)
Quinolizidine alkaloids in seeds of Lupinus mutabilis.
J. Agric. Food Chem. 31:934-938

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Wink, M., Witte, L., Hartmann, T., Theuring, C., Volz, V. (1983)
Accumulation of quinolizidine alkaloids in plants and cell suspension cultures: Genera Lupinus, Cytisus, Baptisia, Genista, Laburnum, and Sophora.
Planta Med. 48:253-257

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Schoofs, G., Teichmann, S., Hartmann, T., Wink, M. (1983)
Lysine decarboxylase in plants and its integration in quinolizidine alkaloid biosynthesis.
Phytochemistry 22:65-69

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Hartmann, T., Löhr, E. (1983)
Decarboxylation of environmental L-leucine by marine red algae.
Mar. Biol. 78:7-12

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Wink, M., Schiebel, H.-M., Witte, L., Hartmann, T. (1982)
Quinolizidine alkaloids from plants and their cell suspension cultures. Ester alkaloids of Lupinus polyphyllus.
Planta Med. 44:15-20

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Wink, M., Hartmann, T., Witte, L., Rheinheimer, J. (1982)
Interrelationship between quinolizidine alkaloid producing legumes and infesting insects: Exploitation of the alkaloid- containing phloem sap of Cytisus scoparius by the broom aphid Aphis cytisorum.
Z. Naturforsch. 37c:1081-1086

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Wink, M., Hartmann, T. (1982)
Enzymatic synthesis of quinolizidine alkaloid esters: A tigloyl-CoA: 13-hydroxylupanine O-tigloyltransferase from Lupinus albus L.
Planta 156:560-565

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Hartmann, T. (1982)
Metabolism of organic N-compounds: Ammonium assimilation and nitrogen partitioning.
Progress in Botany 44:154-164

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Wink, M., Hartmann, T. (1982)
Physiological and biochemical aspects of quinolizidine alkaloid formation in cell suspension cultures.
Proc. 5th Int. Congr. Plant Tissue Cell Cult. (Tokyo) :pp. 333-334

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Wink, M., Hartmann, T. (1982)
Diurnal fluctuation of quinolizidine alkaloid accumulation in legume plants and photomixotrophic cell suspension cultures.
Z. Naturforsch. 37c:369-375

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Wink, M., Hartmann, T. (1982)
Localization of the enzymes of quinolizidine alkaloid biosynthesis in leaf chloroplasts of Lupinus polyphyllus.
Plant Physiol. 70:74-77

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Hartmann, T. (1982)
Die Ammonium-Assimilation im Stickstoffstoffwechsel der Pflanze.
Biologie in unserer Zeit 12:9-19

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Wink, M., Hartmann, T. (1981)
Sites of enzymatic synthesis of quinolizidine alkaloids and their accumulation in Lupinus polyphyllus.
Z. Pflanzenphysiol. 102:337-344

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Wink, M., Hartmann, T. (1981)
Activation of chloroplast-localized enzymes of quinolizidine alkaloid biosynthesis by reduced thioredoxin.
Plant Cell Reports 1:6-9

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Wink, M., Hartmann, T., Witte, L., Schiebel, H.-M. (1981)
The alkaloid patterns of cell suspension cultures and differentiated plants of Baptisia australis and their biogenetical implications.
J. Nat. Prod. 44:14-20

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Wink, M., Witte, L., Hartmann, T. (1981)
Quinolizidine alkaloids of plants and photomixotrophic cell suspension cultures of Sarothamnus scoparius and Orobanche rapum-genistae.
Planta Med. 43:342-352

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Wink, C., Hartmann, T. (1981)
Properties and subcellular localization of L-alanine: aldehyde aminotransferase: Concept of an ubiquitous plant enzyme involved in secondary metabolism.
Z. Naturforsch. 36c:625-632

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Hartmann, T., Ehmke, A. (1980)
Role of mitochondrial glutamate dehydrogenase in the reassimilation of ammonia produced by glycine serine transformation.
Planta 149:207-208

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Hartmann, T., Schoofs, G., Wink, M. (1980)
A chloroplast-localized lysine decarboxylase of Lupinus polyphyllus: The first enzyme in the biosynthetic pathway of quinolizidine alkaloids.
FEBS Let. 115:35-38

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Nagel, M., Hartmann, T. (1980)
Glutamate dehydrogenase from Medicago sativa L.. Purification and comparative kinetic studies of the organ-specific multiple forms.
Z. Naturforsch. 35c:406-415

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Scheid, H.-W., Ehmke, A., Hartmann, T. (1980)
Plant NAD-dependent glutamate dehydrogenase. Purification, molecular properties and metal ion activation of the enzymes from Lemna minor and Pisum sativum. 35c, 213-221 (1980).
Z. Naturforsch. 35c:213-221

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Scheid, H.-W., Ehmke, A., Hartmann, T. (1980)
Plant NAD-dependent glutamate dehydrogenase. Purification, molecular properties and metal ion activation of the enzymes from Lemna minor and Pisum sativum.
Z. Naturforsch. 35c:213-221

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Nauen, W., Hartmann, T. (1980)
Glutamate dehydrogenase from Pisum sativum L.: Localization of the multiple forms and of glutamate formation in isolated mitochondria.
Planta 148:7-16

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Wink, M., Witte, L., Schiebel, H.-M., Hartmann, T. (1980)
Alkaloid pattern of cell suspension cultures and differentiated plants of Lupinus polyphyllus Lindl. analyzed by glas capillary gas-liquid chromatography/mass spectrometry.
Planta Med. 38:238-245

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Wink, M., Hartmann, T., Witte, L. (1980)
Enzymatic synthesis of quinolizidine alkaloids in lupin chloroplasts.
Z. Naturforsch. 35c:93-97

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Wink, M., Hartmann, T., Witte, L. (1980)
Biotransformation of cadaverine and potential biogenetic intermediates of lupanine biosynthesis by plant cell suspension cultures.
Planta Med. 40:31-39

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Wink, M., Hartmann, T. (1980)
Production of quinolizidine alkaloids by photomixotrophic cell suspension cultures: Biochemical and biogenetical aspects.
Planta Med. 40:149-155

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Wink, M., Hartmann, T. (1979)
Cadaverine-pyruvate transamination: The principal step of enzymatic quinolizidine alkaloid biosynthesis in Lupinus polyphyllus cell suspension cultures.
FEBS Lett. 101:343-346

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Hartmann, T. (1979)
Physiologie und Biochemie stickstoffhaltiger sekundärer Pflanzenstoffe.
Mitt. TU Carolo-Wilhelmina zu Braunschweig XIV:26-34

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Wink, M., Hartmann, T., Schiebel, H.-M. (1979)
A model mechanism for the enzymatic synthesis of lupin alkaloids.
Z. Naturforsch. 34c:704-708

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Hartmann, T. (1979)
Metabolism of organic N-compounds. Ammonium assimilation and amino acid metabolism.
Progress in Botany 41:83-92

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Ehmke, A., Hartmann, T. (1978)
Control of glutamate dehydrogenase from Lemna minor by divalent metal ions.
Phytochemistry 17:637-641

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Hartmann, T. (1976)
Metabolism of organic N-compounds. Ammonium assimilation in microorganisms and plants.
Progress in Botany 38:118-128

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Ehmke, A., Hartmann, T. (1976)
Properties of glutamate dehydrogenase from Lemna minor.
Phytochemistry 15:1611-1617

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Unger, W., Hartmann, T. (1976)
Biosynthese aliphatischer Monoamine in Blütenpflanzen durch Nebenaktivität einer Glutamat-Oxalacetat-Aminotransferase?
Z. Pflanzenphysiol. 77:255-267

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Hartmann, T., Aufermann, B. (1973)
Zur Physiologie der Aminbildung bei der marinen Rotalge Polysiphonia urceolata.
Mar. Biol. 21:70-74

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Hartmann, T. (1973)
Endogen und exogen ausgelöste Änderungen des Isoenzymspektrums der NAD-spezifischen Glutamatdehydrogenase im Sproß von Pisum sativum. 111, 129-136 (1973).
Planta 111:129-136

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Hartmann, T., Nagel, M., Ilert, H.-I. (1973)
Organspezifische multiple Formen der Glutamatdehydrogenase in Medicago sativa.
Planta 111:119-128

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Hartmann, T. (1972)
Leucin-Carboxylyase aus marinen Rhodophyceae: 3. Coenzymspezifität und Aktivierung durch Carbonylverbindungen.
Biochem. Physiol. Pflanzen 163:14-29

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Hartmann, T. (1972)
Leucin-Carboxylyase aus marinen Rhodophyceae: 2. Eigenschaften des Enzyms aus Polysiphonia urceolata.
Biochem. Physiol. Pflanzen 163:1-13

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Ilert, H.-I., Hartmann, T. (1972)
Dünnschichtchromatographie der 2,4-Dinitrophenylderivate wasserdampfflüchtiger Amine und ihre Anwendung auf die Trennung pflanzlicher Amine.
J. Chromatogr. 71:119-125

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Hartmann, T, Ilert, H.-I., Steiner, M. (1972)
Aldehydaminierung, der bevorzugte Biosyntheseweg für primäre, aliphatische Monoamine in Blütenpflanzen.
Z. Pflanzenphysiol. 68:11-18

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Hartmann, T. (1972)
Stoffwechsel organischer N-Verbindungen.
Fortschritte der Botanik 34:155-164

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Hartmann, T. (1972)
Leucin-Carboxylyase aus marinen Rhodophyceae: Vorkommen, Verbreitung und einige Eigenschaften.
Phytochemistry 11:1327-1336

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Hartmann, T., Dönges, D., Steiner, M. (1972)
Biosynthese aliphatischer Monoamine in Mercurialis perennis durch Aldehyd-Aminosäure-Transaminierung.
Z. Pflanzenphysiol. 67:404-417

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Bast, E., Hartmann, T., Steiner, M. (1971)
Über eine Valin-Carboxylyase aus Bacillus sphaericus.
Arch. Mikrobiol. 79:12-24

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Hartmann, T. (1970)
Biogenesis of aliphatic monoamines in plants.
Proc. Phytochem. Soc. 9:921-922

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Hartmann, T. (1970)
Stoffwechsel organischer N-Verbindungen. Regulation des Aminosäurenstoffwechsels. Fortschritte der Botanik 32, 81-92 (1970). Stoffwechsel organischer N-Verbindungen. Regulation des Aminosäurenstoffwechsels.
Fortschritte der Botanik 32:81-92

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Dönges, D., Steiner, M., Glombitza, K.-W., Hartmann, T. (1969)
Abtrennung des Ammoniaks bei der quantitativen Bestimmung primärer Amine.
Pharmazie 24:672-673

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Eschrich, W., Hartmann, T. (1969)
Translokation und biochemisches Verhalten von D- und L-Phenylalanin in Vicia faba.
Planta 85:213-227

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Hartmann, T., Eschrich, W. (1969)
Stofftransport in Rotalgen.
Planta 85:303-312

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Hartmann, T., Bast, E. (1969)
Decarboxylierung von L-Methionin durch Proteus vulgaris und Bacillus sphaericus.
Arch. Mikrobiol. 64:239-243

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Hartmann, T. (1968)
3-Methylmercaptopropylamin aus der Braunalge Desmarestia aculeata.
Naturwissenschaften 55:391

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Steiner, M., Hartmann, T. (1968)
Über Vorkommen und Verbreitung flüchtiger Amine bei Meeresalgen.
Planta 79:113-121

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Hartmann, T. (1968)
Stoffwechsel organischer N-Verbindungen.
Fortschritte der Botanik 30: 87-94

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Steiner, M., Hartmann, T., Dönges, D., Bast, E. (1967)
Biosynthese flüchtiger Amine durch eine Amin-Transaminase in Blütenpflanzen.
Naturwissenschaften 54:370-371

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Hartmann, T. (1967)
Nachweis von n-Butylamin in Äpfeln.
Experientia 23:680

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Hartmann, T. (1967)
Biosynthese flüchtiger Amine in Äpfeln durch Aldehyd-Aminierung.
Z. Pflanzenphysiol. 57:368-375

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Hartmann, T., Glombitza, K.-W. (1967)
Der Tryptophanabbau bei Rhizobium leguminosarum.
Arch. Mikrobiol. 56:1-8

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Hartmann, T. (1967)
Über eine Leucindecarboxylase aus Meeresalgen.
Ber. Dtsch. Bot. Ges. 80:738-740

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Glombitza, K.-W., Hartmann, T. (1966)
Der Tryptophanabbau bei Endomycopsis vernalis und anderen Hefen.
Planta 69:135-149

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Kirsten, G., Hartmann, T., Steiner, M. (1966)
Quantitative Analyse der freien Aminosäuren aus saprophytischen Kulturen von Claviceps purpurea.
Planta Med. 14:241-246

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Hartmann, T. (1965)
Zur Biosynthese flüchtiger Amine beim Mutterkornpilz Claviceps purpurea.
Planta 66:191-206

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Hartmann, T. (1965)
Über das zeitliche Auftreten flüchtiger Amine und freier Aminosäuren in wachsenden, saprophytischen Kulturen von Claviceps purpurea.
Planta 66:27-43

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Hartmann, T. (1965)
Methoden zur quantitativen Trennung und Bestimmung flüchtiger pflanzlicher Amine. 65, (1965).
Planta 65:315-333

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Steiner, M., Hartmann, T. (1964)
2-Aminoheptansäure, eine neue natürliche Aminosäure aus Claviceps purpurea.
Biochem. Z. 340:436-440

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Hartmann, T., Steiner, M. (1962)
Decarboxylierung von L-Leucin durch Mycel von Claviceps purpurea.
Naturwissenschaften 49:258-259

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