Overexpression of Two Odorant Binding Proteins Confers Chlorpyrifos Resistance in the Green Peach Aphid Myzus persicae

文献类型: 外文期刊

第一作者: Xiao, Xing

作者: Xiao, Xing;Yin, Xin-Hui;Hu, Shi-Yuan;Miao, Hao-Nan;Wang, Zhuo;Li, Hu;Liang, Pei;Gu, Shao-Hua;Wang, Zhuo;Gu, Shao-Hua;Zhang, Yong-Jun

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关键词: Myzus persicae; chlorpyrifos; OBPs; binding assay; insecticide resistance; molecular docking

期刊名称:JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY ( 影响因子:6.2; 五年影响因子:6.4 )

ISSN: 0021-8561

年卷期: 2024 年 72 卷 36 期

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收录情况: SCI

摘要: The green peach aphid, Myzus persicae, is a worldwide agricultural pest. Chlorpyrifos has been widely used to control M. persicae for decades, thus leading to a high resistance to chlorpyrifos. Recent studies have found that insect odorant binding proteins (OBPs) play essential roles in insecticide resistance. However, the potential resistance mechanism underlying the cross-link between aphid OBPs and chlorpyrifos remains unclear. In this study, two OBPs (MperOBP3 and MperOBP7) were found overexpressed in M. persicae chlorpyrifos-resistant strains (CRR) compared to chlorpyrifos-sensitive strains (CSS); furthermore, chlorpyrifos can significantly induce the expression of both OBPs. An in vitro binding assay indicated that both OBPs strongly bind with chlorpyrifos; an in vivo RNAi and toxicity bioassay confirmed silencing either of the two OBPs can increase the susceptibility of aphids to chlorpyrifos, suggesting that overexpression of MperOBP3 and MperOBP7 contributes to the development of resistance of M. persicae to chlorpyrifos. Our findings provide novel insights into insect OBPs-mediated resistance mechanisms.

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