期刊
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
卷 184, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.pestbp.2022.105076
关键词
Chemosensoryprotein; Cyantraniliprole; Aphisgossypii; Insecticideresistance; Functionalvalidation
资金
- National Natural Science Founda-tion of China [31772188, 32072457]
- Talent Foundation of Jilin University [419080520317]
In this study, we found that AgoCSP1, AgoCSP4, and AgoCSP5 were overexpressed in an insecticide-resistant strain of Aphis gossypii and showed higher expression in broad body tissue than in the midgut. Suppression of these AgoCSPs increased the sensitivity of resistant aphids to cyantraniliprole. Transgenic Drosophila melanogaster expressing these AgoCSPs showed higher tolerance to cyantraniliprole.
Chemosensory proteins (CSPs) are a class of small transporter proteins expressed only in arthropods with various functions beyond chemoreception. Previous studies have been reported that CSPs are involved in the insecticide resistance. In this study, we found that AgoCSP1, AgoCSP4, and AgoCSP5 were constitutively overexpressed in an insecticide-resistant strain of Aphis gossypii and showed higher expression in broad body tissue (including fat bodies) than in the midgut but without tissue specificity. However, the function of these three upregulated AgoCSPs remains unknown. Here, we investigated the function of AgoCSPs in resistance to the diamide insec-ticide cyantraniliprole. Suppression of AgoCSP1, AgoCSP4 and AgoCSP5 transcription by RNAi significantly increased the sensitivity of resistant aphids to cyantraniliprole. Molecular docking and competitive binding as-says indicated that these AgoCSPs bind moderate with cyantraniliprole. Transgenic Drosophila melanogaster expressing these AgoCSPs in the broad body or midgut showed higher tolerance to cyantraniliprole than control flies with the same genetic background; AgoCSP4 was more effective in broad body tissue, and AgoCSP1 and AgoCSP5 were more effective in the midgut, indicating that broad body and midgut tissues may be involved in the insecticide resistance mediated by the AgoCSPs examined. The present results strongly indicate that AgoCSPs participate in xenobiotic detoxification by sequestering and masking toxic insecticide molecules, providing in-sights into new factors involved in resistance development in A. gossypii.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据