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Insecticide resistance associated overexpression of two sigma GST genes assists Nilaparvata lugens to remedy oxidative stress from feeding on resistant rice variety

文献类型: 外文期刊

作者: Zhang, Yixi 1 ; Yang, Baojun 2 ; Yu, Na 1 ; Luo, Guanghua 3 ; Gao, Haoli 1 ; Lin, Xumin 1 ; Liu, Zewen 1 ;

作者机构: 1.Nanjing Agr Univ, Coll Plant Protect, Key Lab Integrated Management Crop Dis & Pests, Minist Educ, Weigang 1, Nanjing 210095, Peoples R China

2.China Natl Rice Res Inst, Rice Technol Res & Dev Ctr, Stadium 359, Hangzhou 310006, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Plant Protect, Zhongling St 50, Nanjing 210095, Peoples R China

关键词: Nilaparvata lugens; Glutathione S-transferases (GSTs); Insecticide resistance; Rice variety; Antioxidation

期刊名称:PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY ( 影响因子:4.966; 五年影响因子:4.591 )

ISSN: 0048-3575

年卷期: 2022 年 188 卷

页码:

收录情况: SCI

摘要: Insect glutathione S-transferases (GSTs) participate in detoxifying insecticides and plant metabolites in two different ways, metabolizing toxic components and remedying oxidative stress. Here in Nilaparvata lugens, a major insect pest on rice, the roles of cytosolic GSTs in resistance to insecticides and to plant defences were evaluated. The over-expression in four resistant strains indicated that NlGSTs1 and NlGSTs2 were essential to resistances to four test insecticides and H2O2 through an antioxidation mechanism. RNAi verified the anti -oxidation function of NlGSTs1 and NlGSTs2 in the resistances as a common mechanism, regardless of the structural differences among insecticides and H2O2. NlGSTs1 and NlGSTs2 also provided protection for N. lugens against rice defense by the same mechanism, reducing H2O2 levels when N. lugens were fed on the resistant rice variety Mudogo. The antioxidation activity of recombinant NlGSTs1 and NlGSTs2 is higher than their direct detoxification, which supported the ability of these two GSTs to remedy oxidative stress. For oxidative stress remediation as a common mechanism of NlGSTs1 and NlGSTs2 in both insecticide resistance and host adapt-ability, the development of insecticide resistance might enhance the ability of insects to remedy oxidative stress from feeding on resistant rice variety and thus to lower the resistance level of rice variety to N. lugens. The results call for careful assessment on N. lugens control when both insecticides and resistant rice variety are applied.

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