Bottom-up effects on herbivore-induced plant defences: a case study based on compositional patterns of rhizosphere microbial communities

Abstract Below-ground soil microorganisms can modulate above-ground plant-insect interactions. It still needs to be determined whether this is a direct effect of single species or an indirect effect of shifts in soil microbial community assemblages. Evaluation of the soil microbiome as a whole is cr...

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Autores principales:	Emilio Benítez, Daniel Paredes, Estefanía Rodríguez, Diana Aldana, Mónica González, Rogelio Nogales, Mercedes Campos, Beatriz Moreno
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9347138d759f46c5ae0702017885582d
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spelling	oai:doaj.org-article:9347138d759f46c5ae0702017885582d2021-12-02T15:04:51ZBottom-up effects on herbivore-induced plant defences: a case study based on compositional patterns of rhizosphere microbial communities10.1038/s41598-017-06714-x2045-2322https://doaj.org/article/9347138d759f46c5ae0702017885582d2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06714-xhttps://doaj.org/toc/2045-2322Abstract Below-ground soil microorganisms can modulate above-ground plant-insect interactions. It still needs to be determined whether this is a direct effect of single species or an indirect effect of shifts in soil microbial community assemblages. Evaluation of the soil microbiome as a whole is critical for understanding multi-trophic interactions, including those mediated by volatiles involving plants, herbivorous insects, predators/parasitoids and microorganisms. We implemented a regulated system comprising Nerium oleander plants grown in soil initially containing a sterile/non sterile inoculum, herbivore Aphis nerii and predator Chrysoperla carnea. After aphid attack, plants emitted a characteristic blend of volatiles derived from two biosynthetic classes: fatty acid catabolites and aromatic-derived products. Three aliphatic compounds were mainly detected in plants grown in the inoculated microbial soil, a blend which was preferentially chosen by C. carnea adult females. The contrasting effect of the initial inocula was attributed to the different microbial consortia developed in each treatment. We argue that differences in the relative abundance of the active microbial communities in the rhizosphere correlate with those in the emission of selected volatile compounds by attacked plants. The mechanisms involved in how the functional soil microbiome modulates inducible indirect defence of plants are discussed.Emilio BenítezDaniel ParedesEstefanía RodríguezDiana AldanaMónica GonzálezRogelio NogalesMercedes CamposBeatriz MorenoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-14 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Emilio Benítez Daniel Paredes Estefanía Rodríguez Diana Aldana Mónica González Rogelio Nogales Mercedes Campos Beatriz Moreno Bottom-up effects on herbivore-induced plant defences: a case study based on compositional patterns of rhizosphere microbial communities
description	Abstract Below-ground soil microorganisms can modulate above-ground plant-insect interactions. It still needs to be determined whether this is a direct effect of single species or an indirect effect of shifts in soil microbial community assemblages. Evaluation of the soil microbiome as a whole is critical for understanding multi-trophic interactions, including those mediated by volatiles involving plants, herbivorous insects, predators/parasitoids and microorganisms. We implemented a regulated system comprising Nerium oleander plants grown in soil initially containing a sterile/non sterile inoculum, herbivore Aphis nerii and predator Chrysoperla carnea. After aphid attack, plants emitted a characteristic blend of volatiles derived from two biosynthetic classes: fatty acid catabolites and aromatic-derived products. Three aliphatic compounds were mainly detected in plants grown in the inoculated microbial soil, a blend which was preferentially chosen by C. carnea adult females. The contrasting effect of the initial inocula was attributed to the different microbial consortia developed in each treatment. We argue that differences in the relative abundance of the active microbial communities in the rhizosphere correlate with those in the emission of selected volatile compounds by attacked plants. The mechanisms involved in how the functional soil microbiome modulates inducible indirect defence of plants are discussed.
format	article
author	Emilio Benítez Daniel Paredes Estefanía Rodríguez Diana Aldana Mónica González Rogelio Nogales Mercedes Campos Beatriz Moreno
author_facet	Emilio Benítez Daniel Paredes Estefanía Rodríguez Diana Aldana Mónica González Rogelio Nogales Mercedes Campos Beatriz Moreno
author_sort	Emilio Benítez
title	Bottom-up effects on herbivore-induced plant defences: a case study based on compositional patterns of rhizosphere microbial communities
title_short	Bottom-up effects on herbivore-induced plant defences: a case study based on compositional patterns of rhizosphere microbial communities
title_full	Bottom-up effects on herbivore-induced plant defences: a case study based on compositional patterns of rhizosphere microbial communities
title_fullStr	Bottom-up effects on herbivore-induced plant defences: a case study based on compositional patterns of rhizosphere microbial communities
title_full_unstemmed	Bottom-up effects on herbivore-induced plant defences: a case study based on compositional patterns of rhizosphere microbial communities
title_sort	bottom-up effects on herbivore-induced plant defences: a case study based on compositional patterns of rhizosphere microbial communities
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/9347138d759f46c5ae0702017885582d
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Bottom-up effects on herbivore-induced plant defences: a case study based on compositional patterns of rhizosphere microbial communities

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