数字农科院2.0

Cotton bollworm resistance to Bt transgenic cotton: A case analysis

文献类型： 外文期刊

作者： Li YunHe;Gao YuLin;Ning ChangMing;Wu KongMing

作者机构：

关键词： Helicoverpa armigera;Bt resistance;transgenic cotton;resistance mechanism;management strategies

期刊名称： SCIENCE CHINA-LIFE SCIENCES

ISSN： 1674-7305

年卷期： 2010 年 53 卷 8 期

页码：

收录情况： SCI

摘要： Cotton bollworm (Helicoverpa armigera) is one of the most serious insect pests of cotton. Transgenic cotton expressing Cry toxins derived from a soil bacterium, Bacillus thuringiensis (Bt), has been produced to target this pest. Bt cotton has been widely planted around the world, and this has resulted in efficient control of bollworm populations with reduced use of synthetic insecticides. However, evolution of resistance by this pest threatens the continued success of Bt cotton. To date, no field populations of bollworm have evolved significant levels of resistance; however, several laboratory-selected Cry-resistant strains of H. armigera have been obtained, which suggests that bollworm has the capacity to evolve resistance to Bt. The development of resistance to Bt is of great concern, and there is a vast body of research in this area aimed at ensuring the continued success of Bt cotton. Here, we review studies on the evolution of Bt resistance in H. armigera, focusing on the biochemical and molecular basis of Bt resistance. We also discuss resistance management strategies, and monitoring programs implemented in China, Australia, and India.

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