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Evolutionary changes in an invasive plant support the defensive role of plant volatiles

It is increasingly evident that plants interact with their outside world through the production of volatile organic compounds,1, 2, 3, 4, 5 but whether the volatiles have evolved to serve in plant defense is still a topic of considerable debate.(3)(,)6, 7, 8 Unharmed leaves constitutively release sm...

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Autores principales: Lin, Tiantian, Vrieling, Klaas, Laplanche, Diane, Klinkhamer, Peter G.L., Lou, Yonggen, Bekooy, Leon, Degen, Thomas, Bustos-Segura, Carlos, Turlings, Ted C.J., Desurmont, Gaylord A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Cell Press 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8360764/
https://www.ncbi.nlm.nih.gov/pubmed/34146488
http://dx.doi.org/10.1016/j.cub.2021.05.055
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author Lin, Tiantian
Vrieling, Klaas
Laplanche, Diane
Klinkhamer, Peter G.L.
Lou, Yonggen
Bekooy, Leon
Degen, Thomas
Bustos-Segura, Carlos
Turlings, Ted C.J.
Desurmont, Gaylord A.
author_facet Lin, Tiantian
Vrieling, Klaas
Laplanche, Diane
Klinkhamer, Peter G.L.
Lou, Yonggen
Bekooy, Leon
Degen, Thomas
Bustos-Segura, Carlos
Turlings, Ted C.J.
Desurmont, Gaylord A.
author_sort Lin, Tiantian
collection PubMed
description It is increasingly evident that plants interact with their outside world through the production of volatile organic compounds,1, 2, 3, 4, 5 but whether the volatiles have evolved to serve in plant defense is still a topic of considerable debate.(3)(,)6, 7, 8 Unharmed leaves constitutively release small amounts of volatiles, but when the leaves are damaged by herbivorous arthropods, they emit substantially more volatiles. These herbivore-induced plant volatiles (HIPVs) attract parasitoids and predators that kill insect herbivores,9, 10, 11, 12 and this can benefit the plants.(13)(,)(14) As yet, however, there is no tangible evolutionary evidence that this tritrophic interplay contributes to the selection forces that have shaped the volatile emissions of plants.(2)(,)(3)(,)5, 6, 7, 8(,)(15) With this in mind, we investigated the evolutionary changes in volatile emissions in invasive common ragwort and the respective defensive roles of its constitutive and inducible volatiles. This Eurasian plant has invaded other continents, where it evolved for many generations in the absence of specialized herbivores and their natural enemies. We found that, compared to native ragworts, invasive plants release higher levels of constitutive volatiles but considerably lower levels of herbivore-induced volatiles. As a consequence, invasive ragwort is more attractive to a specialist moth but avoided by an unadapted generalist moth. Importantly, conforming to the indirect defense hypothesis, a specialist parasitoid was much more attracted to caterpillar-damaged native ragwort, which was reflected in higher parasitism rates in a field trial. The evolution of foliar volatile emissions appears to be indeed driven by their direct and indirect roles in defenses against insects.
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spelling pubmed-83607642021-08-17 Evolutionary changes in an invasive plant support the defensive role of plant volatiles Lin, Tiantian Vrieling, Klaas Laplanche, Diane Klinkhamer, Peter G.L. Lou, Yonggen Bekooy, Leon Degen, Thomas Bustos-Segura, Carlos Turlings, Ted C.J. Desurmont, Gaylord A. Curr Biol Report It is increasingly evident that plants interact with their outside world through the production of volatile organic compounds,1, 2, 3, 4, 5 but whether the volatiles have evolved to serve in plant defense is still a topic of considerable debate.(3)(,)6, 7, 8 Unharmed leaves constitutively release small amounts of volatiles, but when the leaves are damaged by herbivorous arthropods, they emit substantially more volatiles. These herbivore-induced plant volatiles (HIPVs) attract parasitoids and predators that kill insect herbivores,9, 10, 11, 12 and this can benefit the plants.(13)(,)(14) As yet, however, there is no tangible evolutionary evidence that this tritrophic interplay contributes to the selection forces that have shaped the volatile emissions of plants.(2)(,)(3)(,)5, 6, 7, 8(,)(15) With this in mind, we investigated the evolutionary changes in volatile emissions in invasive common ragwort and the respective defensive roles of its constitutive and inducible volatiles. This Eurasian plant has invaded other continents, where it evolved for many generations in the absence of specialized herbivores and their natural enemies. We found that, compared to native ragworts, invasive plants release higher levels of constitutive volatiles but considerably lower levels of herbivore-induced volatiles. As a consequence, invasive ragwort is more attractive to a specialist moth but avoided by an unadapted generalist moth. Importantly, conforming to the indirect defense hypothesis, a specialist parasitoid was much more attracted to caterpillar-damaged native ragwort, which was reflected in higher parasitism rates in a field trial. The evolution of foliar volatile emissions appears to be indeed driven by their direct and indirect roles in defenses against insects. Cell Press 2021-08-09 /pmc/articles/PMC8360764/ /pubmed/34146488 http://dx.doi.org/10.1016/j.cub.2021.05.055 Text en © 2021 The Author(s) https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Report
Lin, Tiantian
Vrieling, Klaas
Laplanche, Diane
Klinkhamer, Peter G.L.
Lou, Yonggen
Bekooy, Leon
Degen, Thomas
Bustos-Segura, Carlos
Turlings, Ted C.J.
Desurmont, Gaylord A.
Evolutionary changes in an invasive plant support the defensive role of plant volatiles
title Evolutionary changes in an invasive plant support the defensive role of plant volatiles
title_full Evolutionary changes in an invasive plant support the defensive role of plant volatiles
title_fullStr Evolutionary changes in an invasive plant support the defensive role of plant volatiles
title_full_unstemmed Evolutionary changes in an invasive plant support the defensive role of plant volatiles
title_short Evolutionary changes in an invasive plant support the defensive role of plant volatiles
title_sort evolutionary changes in an invasive plant support the defensive role of plant volatiles
topic Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8360764/
https://www.ncbi.nlm.nih.gov/pubmed/34146488
http://dx.doi.org/10.1016/j.cub.2021.05.055
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