| Title: | Mycorrhiza-Triggered Transcriptomic and Metabolomic Networks Impinge on Herbivore Fitness |
| Author(s): | Kaling M; Schmidt A; Moritz F; Rosenkranz M; Witting M; Kasper K; Janz D; Schmitt-Kopplin P; Schnitzler JP; Polle A; |
| Address: | "Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology, Helmholtz Zentrum Munchen, 85764 Neuherberg, Germany. Research Unit Analytical BioGeoChemistry, Helmholtz Zentrum Munchen, 85764 Neuherberg, Germany. Forest Botany and Tree Physiology, University of Goettingen, 37077 Goettingen, Germany. Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology, Helmholtz Zentrum Munchen, 85764 Neuherberg, Germany jp.schnitzler@helmholtz-muenchen.de apolle@gwdg.de. Forest Botany and Tree Physiology, University of Goettingen, 37077 Goettingen, Germany jp.schnitzler@helmholtz-muenchen.de apolle@gwdg.de" |
| ISSN/ISBN: | 1532-2548 (Electronic) 0032-0889 (Print) 0032-0889 (Linking) |
| Abstract: | "Symbioses between plants and mycorrhizal fungi are ubiquitous in ecosystems and strengthen the plants' defense against aboveground herbivores. Here, we studied the underlying regulatory networks and biochemical mechanisms in leaves induced by ectomycorrhizae that modify herbivore interactions. Feeding damage and oviposition by the widespread poplar leaf beetle Chrysomela populi were reduced on the ectomycorrhizal hybrid poplar Populus x canescens Integration of transcriptomics, metabolomics, and volatile emission patterns via mass difference networks demonstrated changes in nitrogen allocation in the leaves of mycorrhizal poplars, down-regulation of phenolic pathways, and up-regulation of defensive systems, including protease inhibitors, chitinases, and aldoxime biosynthesis. Ectomycorrhizae had a systemic influence on jasmonate-related signaling transcripts. Our results suggest that ectomycorrhizae prime wounding responses and shift resources from constitutive phenol-based to specialized protective compounds. Consequently, symbiosis with ectomycorrhizal fungi enabled poplars to respond to leaf beetle feeding with a more effective arsenal of defense mechanisms compared with nonmycorrhizal poplars, thus demonstrating the importance of belowground plant-microbe associations in mitigating aboveground biotic stress" |
| Keywords: | "Animals Coleoptera/physiology Disease Resistance/genetics Feeding Behavior Herbivory Hybrid Vigor/genetics Hybridization, Genetic *Metabolomics Mycorrhizae/physiology Plant Diseases/genetics/microbiology/parasitology Plant Leaves/genetics/metabolism/paras;" |
| Notes: | "MedlineKaling, Moritz Schmidt, Anna Moritz, Franco Rosenkranz, Maaria Witting, Michael Kasper, Karl Janz, Dennis Schmitt-Kopplin, Philippe Schnitzler, Jorg-Peter Polle, Andrea eng Research Support, Non-U.S. Gov't 2018/02/14 Plant Physiol. 2018 Apr; 176(4):2639-2656. doi: 10.1104/pp.17.01810. Epub 2018 Feb 8" |
