Characterization of Field-Evolved Resistance to Afidopyropen, a Novel Insecticidal Toxin Developed from Microbial Secondary Metabolites, in Bemisia tabaci
文献类型： 外文期刊
作者： Wang, Ran 1 ; Zhang, Qinghe 2 ; Zhou, Xuan 2 ; Zhang, Mi 3 ; Yang, Qingyi 3 ; Su, Qi 2 ; Luo, Chen 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Plant Protect, Beijing 100097, Peoples R China
2.Yangtze Univ, Coll Agr, Hubei Engn Technol Ctr Pest Forewarning & Managem, Jingzhou 434025, Peoples R China
3.Hebei North Univ, Coll Agr & Forestry Technol, Zhangjiakou 075000, Peoples R China
关键词： Bemisia tabaci; afidopyropen; insecticidal toxin; cross-resistance; synergism; fitness costs
期刊名称：TOXINS （ 影响因子：5.075； 五年影响因子：5.305 ）
ISSN：
年卷期： 2022 年 14 卷 7 期
页码：
收录情况： SCI
摘要： Afidopyropen, a newly identified chemical, is a derivative of pyripyropene A, which is produced by the filamentous fungus Penicillium coprobium. It is a promising novel pesticide applied against whiteflies in agriculture. In this study, the reversion and selection, cross-resistance patterns, synergistic effects, and fitness costs of afidopyropen resistance were studied in a field-developed resistant population of B. tabaci. Compared to a reference MED-S strain, the field-developed resistant Haidian (HD) population showed 36.5-fold resistance to afidopyropen. Significant reversion of resistance to afidopyropen was found in the HD population when it was kept with no selective pressure of the insecticide. The HD-Afi strain, developed from the HD population with afidopyropen pressure, developed 104.3-fold resistance to afidopyropen and significant cross-resistance to sulfoxaflor. Piperonyl butoxide (PBO) largely inhibited afidopyropen resistance in the HD-Afi strain, which indicates that P450 monooxygenase could be involved in the resistance. Significant fitness costs associated with afidopyropen resistance were observed in HD-Afi. This study indicates that a rotation of afidopyropen with other chemical control agents could be useful for impeding afidopyropen resistance in B. tabaci. In addition, we expanded upon the understanding of resistance to afidopyropen, offering evidence suggesting the importance of devising better strategies for the management of whiteflies.
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