数字农科院2.0

Influence of the 'painless' TRP channel on temperature-dependent escape and humidity-related pupation in Bactrocera dorsalis larvae

文献类型： 外文期刊

作者： Zhang, Yan;Zhang, Panpan;Luo, Zhicai;Wang, Qi;Zhang, Jie;Yang, Minghuan;Yan, Shanchun;Liu, Wei;Wang, Guirong

作者机构：

关键词： （0-1-2）Bactrocera dorsalis;Bdorpainless;CRISPR/Cas9;extreme environments;escape behavior

期刊名称： PEST MANAGEMENT SCIENCE

ISSN： 1526-498X

年卷期： 2025 年

页码：

收录情况： SCIE（2025版）

摘要： BACKGROUND Temperature and humidity are critical environmental factors that shape insect growth, development and survival. The larval stage is particularly vulnerable, making the ability to detect and respond to adverse environmental conditions vital for avoiding harm. The oriental fruit fly, Bactrocera dorsalis, is a major global pest inflicting damage on >150 fruit crops. However, the behavioral responses of nonmodel insect larvae to temperature and humidity remain poorly characterized. RESULTS We found that temperature and humidity significantly influence key larval behaviors. To uncover the molecular mechanisms driving these behaviors, we identified B. dorsalis painless (Bdorpainless) homologs and confirmed their expression during larval behavioral stages. Genetic disruption of Bdorpainless notably impaired the larvae's temperature-escape response. Although humidity sensing remained unaffected in Bdorpainless-mutant larvae, their pupation rate was significantly reduced. CONCLUSIONS Our findings provide new insights into the role of environmental factors in B. dorsalis behavior and highlight Bdorpainless as a potential molecular target for pest control. For example, RNA-based biopesticides targeting Bdorpainless could impair larvae's environmental adaptability, offering a novel pest management approach. (c) 2025 Society of Chemical Industry.

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