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An herbivore-induced plant volatile reduces parasitoid attraction by changing the smell of caterpillars
Herbivore-induced plant volatiles (HIPVs) can mediate tritrophic interactions by attracting natural enemies of insect herbivores such as predators and parasitoids. Whether HIPVs can also mediate tritrophic interactions by influencing the attractiveness of the herbivores themselves remains unknown. W...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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American Association for the Advancement of Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5955622/ https://www.ncbi.nlm.nih.gov/pubmed/29774237 http://dx.doi.org/10.1126/sciadv.aar4767 |
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author | Ye, Meng Veyrat, Nathalie Xu, Hao Hu, Lingfei Turlings, Ted C. J. Erb, Matthias |
author_facet | Ye, Meng Veyrat, Nathalie Xu, Hao Hu, Lingfei Turlings, Ted C. J. Erb, Matthias |
author_sort | Ye, Meng |
collection | PubMed |
description | Herbivore-induced plant volatiles (HIPVs) can mediate tritrophic interactions by attracting natural enemies of insect herbivores such as predators and parasitoids. Whether HIPVs can also mediate tritrophic interactions by influencing the attractiveness of the herbivores themselves remains unknown. We explored this question by studying the role of indole, a common HIPV in the plant kingdom. We found that herbivory-induced indole increases the recruitment of the solitary endoparasitoid Microplitis rufiventris to maize plants that are induced by Spodoptera littoralis caterpillars. Surprisingly, however, indole reduces parasitoid recruitment when the caterpillars themselves are present on the plants. Further experiments revealed that indole exposure renders S. littoralis caterpillars unattractive to M. rufiventris, leading to an overall reduction in attractiveness of plant-herbivore complexes. Furthermore, indole increases S. littoralis resistance and decreases M. rufiventris parasitization success. S. littoralis caterpillars are repelled by indole in the absence of M. rufiventris but specifically stop avoiding the volatile in the presence of the parasitoid. Our study shows how an HIPV can undermine tritrophic interactions by reducing the suitability and attractiveness of caterpillars to parasitoids. |
format | Online Article Text |
id | pubmed-5955622 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-59556222018-05-17 An herbivore-induced plant volatile reduces parasitoid attraction by changing the smell of caterpillars Ye, Meng Veyrat, Nathalie Xu, Hao Hu, Lingfei Turlings, Ted C. J. Erb, Matthias Sci Adv Research Articles Herbivore-induced plant volatiles (HIPVs) can mediate tritrophic interactions by attracting natural enemies of insect herbivores such as predators and parasitoids. Whether HIPVs can also mediate tritrophic interactions by influencing the attractiveness of the herbivores themselves remains unknown. We explored this question by studying the role of indole, a common HIPV in the plant kingdom. We found that herbivory-induced indole increases the recruitment of the solitary endoparasitoid Microplitis rufiventris to maize plants that are induced by Spodoptera littoralis caterpillars. Surprisingly, however, indole reduces parasitoid recruitment when the caterpillars themselves are present on the plants. Further experiments revealed that indole exposure renders S. littoralis caterpillars unattractive to M. rufiventris, leading to an overall reduction in attractiveness of plant-herbivore complexes. Furthermore, indole increases S. littoralis resistance and decreases M. rufiventris parasitization success. S. littoralis caterpillars are repelled by indole in the absence of M. rufiventris but specifically stop avoiding the volatile in the presence of the parasitoid. Our study shows how an HIPV can undermine tritrophic interactions by reducing the suitability and attractiveness of caterpillars to parasitoids. American Association for the Advancement of Science 2018-05-16 /pmc/articles/PMC5955622/ /pubmed/29774237 http://dx.doi.org/10.1126/sciadv.aar4767 Text en Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Ye, Meng Veyrat, Nathalie Xu, Hao Hu, Lingfei Turlings, Ted C. J. Erb, Matthias An herbivore-induced plant volatile reduces parasitoid attraction by changing the smell of caterpillars |
title | An herbivore-induced plant volatile reduces parasitoid attraction by changing the smell of caterpillars |
title_full | An herbivore-induced plant volatile reduces parasitoid attraction by changing the smell of caterpillars |
title_fullStr | An herbivore-induced plant volatile reduces parasitoid attraction by changing the smell of caterpillars |
title_full_unstemmed | An herbivore-induced plant volatile reduces parasitoid attraction by changing the smell of caterpillars |
title_short | An herbivore-induced plant volatile reduces parasitoid attraction by changing the smell of caterpillars |
title_sort | herbivore-induced plant volatile reduces parasitoid attraction by changing the smell of caterpillars |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5955622/ https://www.ncbi.nlm.nih.gov/pubmed/29774237 http://dx.doi.org/10.1126/sciadv.aar4767 |
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