Cytochrome P450-Mediated lambda-Cyhalothrin-Resistance in a Field Strain of Helicoverpa armigera from Northeast China

文献类型： 外文期刊

第一作者： Jiang, Shan-Shan

作者： Jiang, Shan-Shan;Wang, Wei;Li, Xin-Ru;Yang, Xue-Qing;Mota-Sanchez, David;Gao, Yu-Lin;Lu, Xu-Peng

作者机构：

关键词： Helicoverpa armigera; northeast China; cytochrome P450; pyrethroid resistance; lambda-cyhalothrin

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）

ISSN： 0021-8561

年卷期： 2019 年 67 卷 13 期

页码：

收录情况： SCI

摘要： Resistance to pyrethroid and organophosphate insecticides has been a growing problem in the management of cotton bollworm Helicoverpa armigera (Hubner) populations in the Yangtze River and Yellow River valleys of China, but resistance status and mechanisms of H. armigera populations from northeast China are less documented. In this study, a field strain collected from Shenyang in northeast China (SYR) is up to 16-fold more resistant than a susceptible strain (SS) to lambda-cyhalothrin, while the resistance level to phoxim remained low (2.6-fold). Synergist tests and enzymatic assays show that increased cytochrome P450 monooxygenase (P450) activity is the main mechanism for lambda-cyhalothrin resistance. Eight out of 10 genes from CYP6 and CYP9 subfamilies were significantly overexpressed in the SYR strain, and CYP6AE11 was the mostly overexpressed P450 (59-fold). These results suggest that overexpression of multiple P450 enzymes contributes to lambda-cyhalothrin resistance in the SYR strain of H. armigera from northeast China.

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