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Correlation between pesticide resistance and enzyme activity in the diamondback moth, Plutella xylostella

文献类型： 外文期刊

作者： Gong, Ya-Jun 1 ; Wang, Ze-Hua 1 ; Shi, Bao-Cai 1 ; Kang, Zong-Jiang 1 ; Zhu, Liang 1 ; Jin, Gui-Hua 1 ; Wei, Shu-Jun 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing 100097, Peoples R China

关键词： acetylcholine esterase;bioassay;carboxylesterase;glutathione S-transferase

期刊名称：JOURNAL OF INSECT SCIENCE （ 影响因子：1.857； 五年影响因子：1.904 ）

ISSN： 1536-2442

年卷期： 2013 年 13 卷

页码：

收录情况： SCI

摘要： The diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), is one of the most important pests that has developed high pesticide resistance. The resistances of five Chinese populations of this moth, four resistant strains (from Beijing, Henan, Fujian, and Guangdong) and one susceptible strain, to five pesticides were determined, and the activities of carboxylesterase, glutathione S-transferase, and acetylcholine esterase were tested in all five populations. The correlations between pesticide resistance and enzyme activity were analyzed. The results showed that the resistance status to the five pesticides was different among the five populations. The resistance ratios of the Beijing and Henan populations to spinosad were 5.84 and 8.22, respectively, and those to beta-cypermethrin were 4.91 and 4.98, respectively. These ratios were higher than those for the Fujian and Guangdong populations. The Fujian population was more sensitive to abamectin and chlorpyrifos than the susceptible population (the resistance ratios were 0.14 and 0.91, respectively); in fact, the median lethal concentration for P. xylostella was significantly higher for chlorpyrifos than that for any of the other four pesticides. The carboxylesterase activity in P. xylostella showed positive correlations with the resistance to spinosad, beta-cypermethrin, chlorpyrifos, and abamectin, but no correlation was observed between the carboxylesterase activity and resistance to emamectin benzoate, between glutathione S-transferase activity and resistance to any of the five pesticides tested, or between acetylcholine esterase activity and any of the pesticides except for emamectin benzoate.

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