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Alterations in the odor profile of plants in cultivar mixtures affect aphid host-location behavior

The effect of cultivar mixtures on aphid control is attributed to the masking or alteration of host-preferred cultivar odor cues. However, the underlying physiological mechanism remains unclear. This study assessed alterations in the volatile emissions of wheat cultivars grown together (Florence-Aur...

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Autores principales: Tous-Fandos, Alba, Gallinger, Jannicke, Enting, Arnoud, Chamorro-Lorenzo, Lourdes, Sans Serra, F. Xavier, Ninkovic, Velemir
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10284062/
https://www.ncbi.nlm.nih.gov/pubmed/37351201
http://dx.doi.org/10.3389/fpls.2023.1186425
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author Tous-Fandos, Alba
Gallinger, Jannicke
Enting, Arnoud
Chamorro-Lorenzo, Lourdes
Sans Serra, F. Xavier
Ninkovic, Velemir
author_facet Tous-Fandos, Alba
Gallinger, Jannicke
Enting, Arnoud
Chamorro-Lorenzo, Lourdes
Sans Serra, F. Xavier
Ninkovic, Velemir
author_sort Tous-Fandos, Alba
collection PubMed
description The effect of cultivar mixtures on aphid control is attributed to the masking or alteration of host-preferred cultivar odor cues. However, the underlying physiological mechanism remains unclear. This study assessed alterations in the volatile emissions of wheat cultivars grown together (Florence-Aurora and Forment; Florence-Aurora and Montcada) and the consequences for the olfactory preference of aphids. Volatile organic compounds were collected from wheat plants grown in a laboratory under mixed or monoculture conditions and subsequently analyzed. The odor profiles of Florence-Aurora and Montcada were indistinguishable from each other. However, the odors of Florence-Aurora and Forment grown in monocultures differed significantly from those emitted by their mixture. The Florence-Aurora and Forment mixture induced plant physiological responses that affected the emission of single volatile compounds and, consequently, altered volatile organic compound ratios. English grain aphids (Sitobion avenae) were less attracted to the odors of Florence-Aurora and Forment when grown as a mixture than the combination of the odors from Florence-Aurora and Forment monocultures. Moreover, aphids preferred clean air over the odor from the Florence-Aurora and Forment mixture but preferred the odor from the Florence-Aurora and Montcada mixture over clean air. This study highlights the beneficial effects of intraspecific plant diversity on aphid control by altering plant odors in response to plant-plant interactions. The emission of less attractive odor cues consequently affects plant-aphid interactions; hence, less attractive odors are likely to impair aphid host-locating behavior. This effect was exclusive to certain cultivar mixtures, which supports the “right neighbor” concept.
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spelling pubmed-102840622023-06-22 Alterations in the odor profile of plants in cultivar mixtures affect aphid host-location behavior Tous-Fandos, Alba Gallinger, Jannicke Enting, Arnoud Chamorro-Lorenzo, Lourdes Sans Serra, F. Xavier Ninkovic, Velemir Front Plant Sci Plant Science The effect of cultivar mixtures on aphid control is attributed to the masking or alteration of host-preferred cultivar odor cues. However, the underlying physiological mechanism remains unclear. This study assessed alterations in the volatile emissions of wheat cultivars grown together (Florence-Aurora and Forment; Florence-Aurora and Montcada) and the consequences for the olfactory preference of aphids. Volatile organic compounds were collected from wheat plants grown in a laboratory under mixed or monoculture conditions and subsequently analyzed. The odor profiles of Florence-Aurora and Montcada were indistinguishable from each other. However, the odors of Florence-Aurora and Forment grown in monocultures differed significantly from those emitted by their mixture. The Florence-Aurora and Forment mixture induced plant physiological responses that affected the emission of single volatile compounds and, consequently, altered volatile organic compound ratios. English grain aphids (Sitobion avenae) were less attracted to the odors of Florence-Aurora and Forment when grown as a mixture than the combination of the odors from Florence-Aurora and Forment monocultures. Moreover, aphids preferred clean air over the odor from the Florence-Aurora and Forment mixture but preferred the odor from the Florence-Aurora and Montcada mixture over clean air. This study highlights the beneficial effects of intraspecific plant diversity on aphid control by altering plant odors in response to plant-plant interactions. The emission of less attractive odor cues consequently affects plant-aphid interactions; hence, less attractive odors are likely to impair aphid host-locating behavior. This effect was exclusive to certain cultivar mixtures, which supports the “right neighbor” concept. Frontiers Media S.A. 2023-06-07 /pmc/articles/PMC10284062/ /pubmed/37351201 http://dx.doi.org/10.3389/fpls.2023.1186425 Text en Copyright © 2023 Tous-Fandos, Gallinger, Enting, Chamorro-Lorenzo, Sans Serra and Ninkovic https://creativecommons.org/licenses/by/4.0/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.
spellingShingle Plant Science
Tous-Fandos, Alba
Gallinger, Jannicke
Enting, Arnoud
Chamorro-Lorenzo, Lourdes
Sans Serra, F. Xavier
Ninkovic, Velemir
Alterations in the odor profile of plants in cultivar mixtures affect aphid host-location behavior
title Alterations in the odor profile of plants in cultivar mixtures affect aphid host-location behavior
title_full Alterations in the odor profile of plants in cultivar mixtures affect aphid host-location behavior
title_fullStr Alterations in the odor profile of plants in cultivar mixtures affect aphid host-location behavior
title_full_unstemmed Alterations in the odor profile of plants in cultivar mixtures affect aphid host-location behavior
title_short Alterations in the odor profile of plants in cultivar mixtures affect aphid host-location behavior
title_sort alterations in the odor profile of plants in cultivar mixtures affect aphid host-location behavior
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10284062/
https://www.ncbi.nlm.nih.gov/pubmed/37351201
http://dx.doi.org/10.3389/fpls.2023.1186425
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