title: The key role of peltate glandular trichomes in symbiota comprising clavicipitaceous fungi of the genus periglandula and their host plants.
abstract: Clavicipitaceous fungi producing ergot alkaloids were recently discovered to be epibiotically associated with peltate glandular trichomes of Ipomoea asarifolia and Turbina corymbosa, dicotyledonous plants of the family Convolvulaceae. Mediators of the close association between fungi and trichomes may be sesquiterpenes, main components in the volatile oil of different convolvulaceous plants. Molecular biological studies and microscopic investigations led to the observation that the trichomes do not only secrete sesquiterpenes and palmitic acid but also seem to absorb ergot alkaloids from the epibiotic fungal species of the genus Periglandula. Thus, the trichomes are likely to have a dual and key function in a metabolic dialogue between fungus and host plant.
authors.affiliation: Institut für Nutzpflanzenwissenschaften und Ressourcenschutz, Universität Bonn, Nußallee 9, D-53115 Bonn, Germany. u-steiner@uni-bonn.de.
authors.forename: Ulrike
authors.initials: U
authors.lastname: Steiner
authors.affiliation: Institut für Pharmazeutische Biologie, Universität Bonn, Nußallee 6, D-53115 Bonn, Germany. s.hellwig@gmx.eu.
authors.forename: Sabine Hellwig neé
authors.initials: SH
authors.lastname: Kucht
authors.affiliation: Institut für Pharmazeutische Biologie, Universität Bonn, Nußallee 6, D-53115 Bonn, Germany.
authors.forename: Mahalia A
authors.initials: MA
authors.lastname: Ahimsa-Müller
authors.affiliation: Institut für Pharmazeutische Biologie und Biotechnologie, Universität Marburg, Deutschhausstraße 17 1/2, D-35037 Marburg, Germany. grundmannni@gmx.de.
authors.forename: Nicola
authors.initials: N
authors.lastname: Grundmann
authors.affiliation: Institut für Pharmazeutische Biologie und Biotechnologie, Universität Marburg, Deutschhausstraße 17 1/2, D-35037 Marburg, Germany. shuming.li@staff.uni-marburg.de.
authors.forename: Shu-Ming
authors.initials: SM
authors.lastname: Li
authors.affiliation: Institut für Pharmazeutische Biologie, Universität Bonn, Nußallee 6, D-53115 Bonn, Germany. Cdrewke@uni-bonn.de.
authors.forename: Christel
authors.initials: C
authors.lastname: Drewke
authors.affiliation: Institut für Pharmazeutische Biologie, Universität Bonn, Nußallee 6, D-53115 Bonn, Germany. eleistner@uni-bonn.de.
authors.forename: Eckhard
authors.initials: E
authors.lastname: Leistner
mesh_terms: D002851:Chromatography, High Pressure Liquid; D027722:Convolvulaceae / Q000382:microbiology*; D004876:Ergot Alkaloids / Q000096:biosynthesis* / Q000737:chemistry; D025301:Hyphae / Q000378:metabolism; D006999:Hypocreales / Q000378:metabolism*; D025282:Mycelium / Q000378:metabolism; D018515:Plant Leaves / Q000737:chemistry / Q000382:microbiology*; D013559:Symbiosis; D053719:Tandem Mass Spectrometry; D064201:Trichomes / Q000382:microbiology*
chemical_list: D004876:Ergot Alkaloids