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Caterpillar-induced rice volatiles provide enemy-free space for the offspring of the brown planthopper
Auteur(s)
Hu, Xiaoyun
Su, Shuangli
Liu, Qingsong
Jiao, Yaoyu
Peng, Yufa
Li, Yunhe
Date de parution
2020-8-11
In
eLife
No
9
De la page
1
A la page
19
Revu par les pairs
1
Résumé
Plants typically release large quantities of volatiles in response to herbivory by insects. This benefits the plants by, for instance, attracting the natural enemies of the herbivores. We show that the brown planthopper (BPH) has cleverly turned this around by exploiting herbivore-induced plant volatiles (HIPVs) that provide safe havens for its offspring. BPH females preferentially oviposit on rice plants already infested by the rice striped stem borer (SSB), which are avoided by the egg parasitoid Anagrus nilaparvatae, the most important natural enemy of BPH. Using synthetic versions of volatiles identified from plants infested by BPH and/or SSB, we demonstrate the role of HIPVs in these interactions. Moreover, greenhouse and field cage experiments confirm the adaptiveness of the BPH oviposition strategy, resulting in 80% lower parasitism rates of its eggs. Besides revealing a novel exploitation of HIPVs, these findings may lead to novel control strategies against an exceedingly important rice pest.
Identifiants
Autre version
https://elifesciences.org/articles/55421
Type de publication
journal article
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