Plants generate energy flows through natural food webs, driven by competition for resources among organisms, which are part of a complex network of multitrophic interactions. Here, we demonstrate that the interaction between tomato plants and a phytophagous insect is driven by a hidden interplay between their respective microbiotas. Tomato plants colonized by the soil fungus Trichoderma afroharzianum, a beneficial microorganism widely used in agriculture as a biocontrol agent, negatively affects the development and survival of the lepidopteran pest Spodoptera littoralis by altering the larval gut microbiota and its nutritional support to the host. Indeed, experiments aimed to restore the functional microbial community in the gut allow a complete rescue. Our results shed light on a novel role played by a soil microorganism in the modulation of plant-insect interaction, setting the stage for a more comprehensive analysis of the impact that biocontrol agents may have on ecological sustainability of agricultural systems.

A soil fungus confers plant resistance against a phytophagous insect by disrupting the symbiotic role of its gut microbiota / I. Di Lelio, G. Forni, G. Magoga, M. Brunetti, D. Bruno, A. Becchimanzi, M.G. De Luca, M. Sinno, E. Barra, M. Bonelli, S. Frusciante, G. Diretto, M.C. Digilio, S.L. Woo, G. Tettamanti, R. Rao, M. Lorito, M. Casartelli, M. Montagna, F. Pennacchio. - In: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. - ISSN 1091-6490. - 120:10(2023 Feb 27), pp. e2216922120.1-e2216922120.12. [10.1073/pnas.2216922120]

A soil fungus confers plant resistance against a phytophagous insect by disrupting the symbiotic role of its gut microbiota

G. Forni
Co-primo
;
G. Magoga;M. Brunetti;M. Bonelli;M. Casartelli
;
M. Montagna
Penultimo
;
2023

Abstract

Plants generate energy flows through natural food webs, driven by competition for resources among organisms, which are part of a complex network of multitrophic interactions. Here, we demonstrate that the interaction between tomato plants and a phytophagous insect is driven by a hidden interplay between their respective microbiotas. Tomato plants colonized by the soil fungus Trichoderma afroharzianum, a beneficial microorganism widely used in agriculture as a biocontrol agent, negatively affects the development and survival of the lepidopteran pest Spodoptera littoralis by altering the larval gut microbiota and its nutritional support to the host. Indeed, experiments aimed to restore the functional microbial community in the gut allow a complete rescue. Our results shed light on a novel role played by a soil microorganism in the modulation of plant-insect interaction, setting the stage for a more comprehensive analysis of the impact that biocontrol agents may have on ecological sustainability of agricultural systems.
holobionts; insect gut microbiota; insect–plant interactions; phytophagous insects; soil microbiota
Settore AGR/11 - Entomologia Generale e Applicata
   Plant multitROphic interactions for bioinspired Strategies of PEst ConTrol (PROSPECT)
   PROSPECT
   MINISTERO DELL'ISTRUZIONE E DEL MERITO
   2017JLN833_004
27-feb-2023
https://www.pnas.org/doi/10.1073/pnas.2216922120
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/956973
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