文献类型： 外文期刊
第一作者： Wang, Li-Kui
作者： Wang, Li-Kui;Li, Fen;Duan, Wen-Bo;Wu, Shao-Ying;Abdelraheem, Ehab;Malhat, Farag;Peng, Zheng-Qiang;Jiang, Wayne
作者机构：
关键词： Spodoptera frugiperda; Sodium channel; Expression analysis; Resistance; Toxicity
期刊名称：BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY （ 影响因子：2.151； 五年影响因子：2.129 ）
ISSN： 0007-4861
年卷期： 2021 年 106 卷 2 期
页码：
收录情况： SCI
摘要： Pyrethroid and indoxacarb are commonly used pesticides to control the fall armyworm (Spodoptera frugiperda) in the crops. There are a series of consequences caused by the use of pyrethroid and indoxacarb pesticides under emergency control, such as pest resistance development, contamination of soil, water, and farm products. This study analyzed the structure and physiological function of the sodium channel in S. frugiperda, which is an important step to elaborate the resistance mechanism of S. frugiperda to indoxacarb and pyrethroid pesticides. According to genetic analysis, the cloned cDNA sequences of sodium channel in S. frugiperda (SfNa(v)) showed the shortest genetic distance with that of the sodium channel in Helicoverpa armigera. Under the induction of three pesticides, the expression of SfNa(v) decreased in the first 12 h and then increased after 24 h. It was concluded that SfNa(v) had a typical structure of the sodium channel of insects and its down-regulated expression can decrease the combination of S. frugiperda with pyrethroid and indoxacarb pesticides. The up-regulated expression of SfNa(v) was conducive to the enhancement of the pesticide resistance.
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