| Title: | Volatile emission and biosynthesis in endophytic fungi colonizing black poplar leaves |
| Author(s): | Walther C; Baumann P; Luck K; Rothe B; Biedermann PHW; Gershenzon J; Kollner TG; Unsicker SB; |
| Address: | "Department of Biochemistry, Max Planck Institute for Chemical Ecology, Hans-Knoll Str. 8, 07745 Jena, Germany. Chair of Forest Entomology and Protection, Institute of Forest Sciences, University of Freiburg, Fohrenbuhl 27, 79252 Stegen-Wittental, Germany" |
| ISSN/ISBN: | 1860-5397 (Print) 1860-5397 (Electronic) 1860-5397 (Linking) |
| Abstract: | "Plant volatiles play a major role in plant-insect interactions as defense compounds or attractants for insect herbivores. Recent studies have shown that endophytic fungi are also able to produce volatiles and this raises the question of whether these fungal volatiles influence plant-insect interactions. Here, we qualitatively investigated the volatiles released from 13 endophytic fungal species isolated from leaves of mature black poplar (Populus nigra) trees. The volatile blends of these endophytes grown on agar medium consist of typical fungal compounds, including aliphatic alcohols, ketones and esters, the aromatic alcohol 2-phenylethanol and various sesquiterpenes. Some of the compounds were previously reported as constituents of the poplar volatile blend. For one endophyte, a species of Cladosporium, we isolated and characterized two sesquiterpene synthases that can produce a number of mono- and sesquiterpenes like (E)-beta-ocimene and (E)-beta-caryophyllene, compounds that are dominant components of the herbivore-induced volatile bouquet of black poplar trees. As several of the fungus-derived volatiles like 2-phenylethanol, 3-methyl-1-butanol and the sesquiterpene (E)-beta-caryophyllene, are known to play a role in direct and indirect plant defense, the emission of volatiles from endophytic microbial species should be considered in future studies investigating tree-insect interactions" |
| Keywords: | Ascomycota Cladosporium Salicaceae terpene synthases volatile organic compound (VOC); |
| Notes: | "PubMed-not-MEDLINEWalther, Christin Baumann, Pamela Luck, Katrin Rothe, Beate Biedermann, Peter H W Gershenzon, Jonathan Kollner, Tobias G Unsicker, Sybille B eng Germany 2021/08/10 Beilstein J Org Chem. 2021 Jul 22; 17:1698-1711. doi: 10.3762/bjoc.17.118. eCollection 2021" |
