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草地贪夜蛾肠道普罗维登斯菌对氯虫苯甲酰胺的解毒作用

文献类型： 中文期刊

关键词： 解毒;;普罗威登斯菌;;氯虫苯甲酰胺;;草地贪夜蛾

期刊名称：中国生物防治学报

ISSN： 2095-039X

年卷期： 2025 年

页码：

收录情况： 北大核心（2023版） ; ; CSCD（2025-2026年度） ; ; 科技核心（2024版） ; ; 农林核心（2024版）

摘要： Chlorantraniliprole (CAP) is one of the commonly employed chemical agents for controlling fall armyworm (FAW). Long-term use will cause the fall armyworm to develop resistance to chlorantranamide, reducing the efficacy of the medication. To further explore the role of gut microbiota in the process of resistance development, this study compared the differences in intestinal microbiota before and after the intake of chlorantraniliprole, screened and isolated the differential gut microbiota, and conducted bioassay tests. The results showed that three types of bacteria were screened from fall armyworm midgut and isolated and cultured on LB by in vitro culture method. Biotests revealed that strain could reduce the virulence of chlorantraniliprole and significantly reduce the mortality rate of the fall armyworm. The changes in the amount of chlorantraniliprole and strain before and after mixing were analyzed by LC-MS. It was found that strain could degrade chlorantraniliprole, and its degradation rate could reach 42%. Further genomic sequencing and phylogenetic analysis identified the strain as Providencia rettgeri, with a genome size of 4391370 bp encoding 3985 genes. In conclusion, P. rettgeri can increase the resistance of fall armyworm to chlorantraniliprole by directly degrading it, providing a basis for further understanding the mechanism on developing resistance to chlorantraniliprole.

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