An odorant receptor mediates the avoidance of Plutella xylostella against parasitoid

文献类型： 外文期刊

第一作者： Liu, Yipeng

作者： Liu, Yipeng;Zhang, Sai;Cao, Song;Liu, Yang;Wang, Guirong;Liu, Yipeng;Wang, Guirong;Liu, Yipeng;Jacquin-Joly, Emmanuelle;Zhou, Qiong

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关键词： Plutella xylostella; Odorant receptor; Heptanal; Avoidance behavior; Parasitoid wasp

期刊名称：BMC BIOLOGY （ 影响因子：5.4； 五年影响因子：7.1 ）

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年卷期： 2024 年 22 卷 1 期

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收录情况： SCI

摘要： Background Ecosystems are brimming with myriad compounds, including some at very low concentrations that are indispensable for insect survival and reproduction. Screening strategies for identifying active compounds are typically based on bioassay-guided approaches. Results Here, we selected two candidate odorant receptors from a major pest of cruciferous plants-the diamondback moth Plutella xylostella-as targets to screen for active semiochemicals. One of these ORs, PxylOR16, exhibited a specific, sensitive response to heptanal, with both larvae and adult P. xylostella displaying heptanal avoidance behavior. Gene knockout studies based on CRISPR/Cas9 experimentally confirmed that PxylOR16 mediates this avoidance. Intriguingly, rather than being involved in P. xylostella-host plant interaction, we discovered that P. xylostella recognizes heptanal from the cuticular volatiles of the parasitoid wasp Cotesia vestalis, possibly to avoid parasitization. Conclusions Our study thus showcases how the deorphanization of odorant receptors can drive discoveries about their complex functions in mediating insect survival. We also demonstrate that the use of odorant receptors as a screening platform could be efficient in identifying new behavioral regulators for application in pest management.

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