Fungi indirectly affect plant root architecture by modulating soil volatile organic compounds

  • The plant-growth modulating effect of microbial volatile organic compounds (VOCs) has been demonstrated repeatedly. This has most often been performed by exposing plants to VOC released by microbes grown on nutrient rich media. Here, we used soil instead to grow fungi of the Fusarium genus and investigate how VOCs emitted by this system influenced the development of Arabidopsis plants. The volatile profiles of Fusarium strains grown in soil and malt extract were also compared. Our results demonstrate that distinct volatile signatures can be attributed to different Fusarium genetic clades but also highlight a major influence of the growth medium on volatile emission. Furthermore, all soil-grown Fusarium isolates increased primary root length in Arabidopsis by decreasing VOC concentrations in soil. This result represents a major paradigm shift in plant-microbe interactions since growth modulating effects have been attributed so far to the emission and not the consumption of volatile signals.

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Author:Denis Schenkel, Jose G. Maciá-Vicente, Alexander Bissell, Richard Splivallo
Pubmed Id:
Parent Title (English):Frontiers in microbiology
Publisher:Frontiers Media
Place of publication:Lausanne
Contributor(s):Caroline Gutjahr
Document Type:Article
Year of Completion:2018
Date of first Publication:2018/08/13
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2018/11/01
Tag:Arabidopsis; Fusarium; plant-microbe interactions; soil VOCs; volatile organic compounds
Issue:Art. 1847
Page Number:13
First Page:1
Last Page:13
Copyright © 2018 Schenkel, Maciá-Vicente, Bissell and Splivallo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Institutes:Biowissenschaften / Biowissenschaften
Biowissenschaften / Institut für Ökologie, Evolution und Diversität
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
Licence (German):License LogoCreative Commons - Namensnennung 4.0