Transgenic Bt cotton expressing Cry1Ac/1Ab does not have detrimental effects on the predator Arma chinensis through its prey Helicoverpa armigera
文献类型： 外文期刊
作者： Ma, Yamin 1 ; Zhang, Meng 1 ; Luo, Junyu 1 ; Ji, Jichao 1 ; Zhu, Xiangzhen 2 ; Wang, Li 2 ; Zhang, Kaixin 2 ; Li, Dongyang 2 ; Cui, Jinjie 1 ; Niu, Lin 1 ;
作者机构： 1.Zhengzhou Univ, Sch Agr Sci, State Key Lab Cotton Biol, Zhengzhou Res Base, Zhengzhou 450001, Henan, Peoples R China
2.Chinese Acad Agr Sci, Inst Cotton Res, Anyang 455000, Peoples R China
关键词： Risk assessment; Pest control; Bt toxin; Detoxification response; Binding ability
期刊名称：JOURNAL OF PEST SCIENCE （ 影响因子：5.742； 五年影响因子：5.562 ）
ISSN： 1612-4758
年卷期：
页码：
收录情况： SCI
摘要： The commercial utilization of genetically modified crops expressing Bacillus thuringiensis (Bt) insecticidal toxins requires careful assessment of the potential impact on non-target organisms. To assess the potential ecological impact of the Bt insect-resistant cotton variety A26-5 (expressing the Cry1Ac/1Ab protein), we tested whether there was transmission of Cry1Ac toxin through the food chain from cotton to the herbivorous prey Helicoverpa armigera (Hubner) through to the non-target predatory insect Arma chinensis (Fallou). A small amount of Cry1Ac protein was detected in H. armigera and A. chinensis, indicating that Cry1Ac could be transmitted to A. chinensis. However, no differences were found in survival rate, development, or fecundity of A. chinensis after treatment with Bt-fed or Bt-free H. armigera. Cry1Ac exposure did not affect detoxification genes expression in A. chinensis, which is likely related to our finding that Cry1Ac could not bind to receptors in the midgut. Taken together, these results show that the Bt cotton A26-5 has few, if any, toxic effects on A. chinensis.
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