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Molecular cloning and expression of glutathione S-transferases involved in propargite resistance of the carmine spider mite, Tetranychus cinnabarinus (Boisduval)

文献类型： 外文期刊

作者： Luo, Yan-Jie 1 ; Yang, Zhen-Guo 1 ; Xie, Dao-Yan 1 ; Ding, Wei 2 ; Da, Ai-Si 1 ; Ni, Jing 1 ; Chai, Jian-Ping 1 ; Huang, 1 ;

作者机构： 1.Yunnan Acad Agr Sci, Inst Sericulture & Apiculture, Mengzi 661101, Peoples R China

2.Southwest Univ, Coll Plant Protect, Chongqing, Peoples R China

3.Yunnan Acad Agr Sci, Inst Crop, Kunming, Peoples R China

关键词： Tetranychus cinnabarinus;Glutathione S-transferases;Propargite;Acaricide resistance;Gene expression

期刊名称：PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：3.963； 五年影响因子：4.454 ）

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收录情况： SCI

摘要： The carmine spider mite (CSM) Tetranychus cinnabarinus has become a serious pest in China and has developed resistance to acaricide propargite as it is used to control mites worldwide including T. cinnabarinus. In this study, a resistant colony of T. cinnabarinus, PRR34 (37.78-fold resistant ratio), was established after 34 generations of propargite selection, and cross-resistance patterns of 7 other acaricides were determined in comparison with a susceptible strain (SS). The contribution of detoxification enzymes to propargite tolerance were investigated using biological, biochemical and molecular approaches. Enzyme inhibitor synergist tests suggested glutathione S-transferases (GST) involvement in propargite-resistance of PRR34, and GST activity against 1-chloro-2,4-dinitrobenzene (CDNB) was correlated with the development of resistance. Eight novel GST genes (TcGSTd1, TcGSTd2, TcGSTm1, TcGSTm2, TcGSTm3, TcGSTm4 and TcGSTm5) were cloned, and phylogenetic analysis showed that the eight GST genes were most closely related to GST family delta and mu from Tetranychus urticae. Quantitative RTPCR revealed that the expression level of GSTs in PPR34 strain increased in larvae, nymphs and adults, while decreased in eggs compared with that of SS. Collectively, these results support a role of GSTs in mediating resistance to propargite in the PRR34 strain. TcGSTd1,TcGSTd2 and TcGSTm2 genes might play significant roles in propargite resistance of CSM, especially at adult stage. This is the first attempt to define specific genes involved in GST mediated propargite resistance of T. cinnabarinus at the transcriptional level. (C) 2014 Elsevier Inc. All rights reserved.

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