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Köllner TG, Degenhardt J,Gershenzon J (2020) The product specificities of maize terpene synthases TPS4 and TPS10 are determined both by active site amino acids and residues adjacent to the active site. Plants 9, 552


Kainer D,  Padovan A, Degenhardt J, Krause S, Mondal P, Foley WJ, Külheim C (2019) High marker density GWAS provides novel insights into the genomic architecture of terpene oil yield in Eucalyptus. New phytologist 223, 1489-1504


Wiese N, Fischer J, Heidler J, Lewkowski O, Degenhardt J, Erler S (2018) The terpenes of leaves, pollen, and nectar of thyme (Thymus vulgaris) inhibit growth of bee disease-associated microbes: Scientific reports 8 14634




Seidl-Adams I, Richter A, Boomer KB, Yoshinaga N, Degenhardt J, Tumlinson JH (2015) Emission of herbivore elicitor-induced sesquiterpenes is regulated by stomatal aperture in maize (Zea mays) seedlings. Plant Cell and Environmental 38: 23-34

Richter A, Seidl-Adams I, Köllner TG, Schaff C, Tumlinson JH, Degenhardt J (2015) A small, differentially regulated family of farnesyl diphosphate  synthases in maize (Zea mays) provides farnesyl diphosphate for the  biosynthesis of herbivore-induced sesquiterpenes. Planta 241: 1351-1361

Külheim C, Padovan A, Hefer C, Krause S, Köllner TG, Myburg AA, Degenhardt J, Foley WJ (2015) The Eucalyptus terpene synthase gene family. BMC Genomics 16: 450-468

Vattekkatte A, Gatto N, Köllner TG, Degenhardt J, Gershenzon J, Boland W (2015) Substrate geometry controls the cyclization cascade in multiproduct terpene synthases from Zea mays. Org Biomol Chem 13: 6021-6030

Padovan A, Patel HR, Chuah A, Huttley GA, Krause ST, Degenhardt J, Foley WJ, Kühlheim C (2015) Transcriptome Sequencing of Two Phenotypic Mosaic Eucalyptus Trees Reveals Large Scale Transcriptome Re-Modelling. PLOS ONE 10(5) DOI: 10.1371

Gatto N, Vattekkatte A, Köllner TG, Degenhardt J, Gershenzon J, Boland W (2015) Isotope sensitive branching and kinetic isotope effects to analyse multiproduct terpenoid synthases from Zea mays. Chem Commun 51: 3797-3800

Krauss GJ, Nies DH (2015) Ecological Biochemistry - Environmental and Interspecies Interactions. Preiss S, Degenhardt J, Gershenzon J. Plant - Animal Dialogues. Wiley-VCH Verlag (ISBN: 978-3-527-31650-2) 313-330


Piechulla B, Degenhardt J (2014) The emerging importance of microbial volatile organic compounds. Plant, Cell and Environment 37: 811-



Köllner TG, Lenk C, Schnee C, Köpke S, Lindemann P, Gershenzon J, Degenhardt J (2013) Localization of sesquiterpene formation and emission in maize leaves after herbivore damage. BMC Plant Biology 13:15

Lima AS, Schimmel J, Lukas B, Novak J, Barroso JG, Figueiredo AC, Pedro LG, Degenhardt J, Trindade H (2013) Genomic characterization, molecular cloning and expression  analysis of two terpene synthases from Thymus caespititius (Lamiaceae). Planta 238: 191-204

Robert CAM, Erb M, Hiltpold I, Hibbard BE, Gaillard MDP, Bilat J, Degenhardt, J, Cambet-Petit-Jean X, Turlings TCJ, Zwahlen C (2013) Genetically engineered maize plants reveal distinct costs and benefits of constitutive volatile emissions in the field. Plant Biotechnology J 11: 628-639

Krause ST, Köllner TG, Asbach J, Degenhardt J (2013) Stereochemical mechanism of two sabinene hydrate synthases forming antipodal monoterpenes in thyme (Thymus vulgaris). Arch Biochem Biophys 528: 112-121


Irmisch S, Krause ST, Kunert G, Gershenzon J, Degenhardt J, Köllner TG (2012) The organ-specific expression of terpene synthase genes contributes to the terpene hydrocarbon composition of chamomile essential oils. BMC Plant Biology 12: 84

Lenk C, Köllner TG, Erb M, Degenhardt J (2012) Two enzymes responsible for the formation of herbivore-induced  volatiles of maize, the methyltransferase AAMT1 and the terpene  synthase TPS23, are regulated by a similar signal transduction pathway. Entomologia Experimentalis et Applicata 144: 86-92

Zhuang XF, Köllner TG, Zhao N, Li GL, Jiang YF, Zhu LC, Ma JX, Degenhardt J, Chen F (2012) Dynamic evolution of herbivore-induced sesquiterpene biosynthesis in sorghum and related grass crops. Plant J 69: 70-80


Fontana A, Held M, Fantaye CA, Turlings TC, Degenhardt J, Gershenzon J (2011) Attractiveness of Constitutive and Herbivore-Induced Sesquiterpene Blends of Maize to the Parasitic Wasp Cotesia marginiventris (Cresson) J. Chemical Ecology 37:582-591

Erb M, Köllner TG, Degenhardt J, Zwahlen C, Hibbard BE, Turlings TCJ (2011) The role of abscisic acid and water stress in root herbivore-induced leaf resistance. New Phytologist 189: 308-320


Padovan A, Keszei A, Köllner T, Degenhardt J, Foley WJ (2010) The molecular basis of host plant selection in Melaleuca quinquenervia by a successful biological control agent. Phytochemistry, 71:1237-1244

Keszei A, Brubaker CL, Carter R, Köllner T, Degenhardt J, Foley WJ (2010) Functional and evolutionary relationships between terpene synthases from Australian Myrtaceae. Phytochemistry, 71: 844-852

Köllner TG, Lenk C, Zhao N, Seidl-Adams I, Gershenzon J, Chen F and Degenhardt J (2010) Herbivore-induced SABATH methyltransferases of maize that methylate anthranilic acid using S-adenosyl-L-methionine. Plant Physiology, 153: 1795-1807

Crocoll C, Asbach J, Novak J, Gershenzon J und Degenhardt J (2010) Terpene synthases of oregano (Origanum vulgare L.) and their roles in the pathway and regulation of terpene biosynthesis Plant Molecular Biology 73:582-590

Chatzopoulou FM, Makris AM, Argiriou A, Degenhardt J, Kanellis AK (2010) EST analysis and annotation of transcripts derived from a trichome – specific cDNA library from Salvia fruticosa. Plant Cell Rep 29 :523-534


 Degenhardt J (2009) Indirect Defense Responses to Herbivory in Grasses. Plant Physiol. 149: 96-102


 Chatzopoulou FM, Makris AM, Degenhardt J, Kanelis AK (2008) Annotation and analysis of ESTs from leaves' trichomes of Salvia fruticosa. Planta Medica 74:1119-1128

Novak J, Lukas B, Bolzer K, Grausgruber-Gröger S, Degenhardt J (2008) Identification and characterization of simple sequence repeat markers from a glandular Origanum vulgare expressed sequence tag. Molecular Ecology Resources 8:599-601

Erb M; Ton J; Degenhardt J; Turlings TCJ (2008) Interactions between arthropod-induced aboveground and belowground defenses in plants. Plant Physiology 146:867-874

Köllner TG; Schnee C; Li SH; Svatoš A; Schneider B; Gershenzon J; Degenhardt J (2008) Protonation of a neutral (S)-β-bisabolene intermediate is involved in S-beta-macrocarpene formation by the maize sesquiterpene synthases TPS6 and TPS11. Journal of Biological Chemistry 283:20779-20788

Köllner TG; Held M; Lenk C; Hiltpold I; Turlings TCJ; Gershenzon J; Degenhardt J (2008) A maize (E)-β-caryophyllene synthase implicated in indirect defense responses against herbivores is not expressed in most American maize varieties. The Plant Cell 20:482-494

Lin C; Shen B; Xu Z; Köllner TG; Degenhardt J; Dooner HK (2008) Characterization of the monoterpene synthase gene tps26, the ortholog of a gene induced by insect herbivory in maize. Plant Physiology 146:940-951

Yuan JS; Köllner TG; Wiggins G; Grant J; Degenhardt J; Chen F (2008) Molecular and genomic basis of volatile-mediated indirect defense against insects in rice. Plant Journal 55:491-503


 Günnewich N; Page JE; Köllner TG; Degenhardt J; Kutchan TM (2007) Functional expression and characterization of trichome-specific (-)-limonene synthase and (+)-α-pinene synthase from Cannabis sativa. Natural Product Communications 2:223-232

Kampranis SC; Ioannidis D; Purvis A; Mahrez W; Ninga E; Katerelos NA; Anssour S; Dunwell JM; Degenhardt J; Makris AM; Goodenough PW; Johnson C (2007) Rational Conversion of Substrate and Product Specificity in a Salvia Monoterpene Synthase: Structural Insights into the Evolution of Terpene Synthase Function. The Plant Cell 19:1994-2005


 Köllner TG; O'Maille PE; Gatto N; Boland W; Gershenzon J; Degenhardt J (2006) Two pockets in the active site of maize sesquiterpene synthase TPS4 carry out sequential parts of the reaction scheme resulting in multiple products. Archives of Biochemistry & Biophysics 448:83-92

Schnee C; Köllner TG; Held M; Turlings TCJ; Gershenzon J; Degenhardt J (2006) The products of a single maize sesquiterpene synthase form a volatile defense signal that attracts natural enemies of maize herbivores. Proceedings of the National Academy of Sciences of the United States of America (PNAS) 103:1129-1134


 Rasmann S; Köllner TG; Degenhardt J; Hiltpold I; Toepfer S; Kuhlmann U; Gershenzon J; Turlings TCJ (2005) Recruitment of entomopathogenic nematodes by insect-damaged maize roots. Nature 434:732-737


 Hoballah ME; Köllner TG; Degenhardt J; Turlings TCJ (2004) Costs of induced volatile production in maize. Oikos 105:168-180

Köllner TG; Schnee C; Gershenzon J; Degenhardt J (2004) The variability of sesquiterpenes emitted from two Zea mays cultivars is controlled by allelic variation of two terpene synthase genes encoding stereoselective multiple product enzymes. The Plant Cell 16:1115-1131

Köllner TG; Schnee C; Gershenzon J; Degenhardt J (2004) The sesquiterpene hydrocarbons of maize (Zea mays) form five groups with distinct developmental and organ-specific distributions. Phytochemistry 65:1895-1902


 Degenhardt J; Gershenzon J (2003) Terpenoids. In: Brian T; Murphy DJ; Murray BG (Eds.): Encyclopedia of Applied Plant Sciences. Vol. 1. Elsevier, Amsterdam. pp. 500-504

Degenhardt J; Gershenzon J (2003) Genetics of crop improvement: Genetic modification of secondary metabolism terpenoids. In: Thomas B; Murphy DJ; Murray BG (Eds.): Encyclopedia of Applied Plant Sciences. Elsevier Science, London. pp. 500-504

Degenhardt J; Gershenzon J; Baldwin IT; Kessler A (2003) Attracting friends to feast on foes: engineering terpene emission to make crop plants more attractive to herbivore enemies. Current Opinion in Biotechnology 14:169-176

Köllner TG; Schnee C; Gershenzon J; Degenhardt J (2003) Terpene formation in maize and its ecological and evolutionary significance. Chemicke Listy 97:319-327