Rapid spread of a densovirus in a major crop pest following wide-scale adoption of Bt-cotton in China

文献类型： 外文期刊

第一作者： Xiao, Yutao

作者： Xiao, Yutao;Li, Wenjing;Yang, Xianming;Wu, Kongming;Xiao, Yutao;Jin, Minghui;Yuan, He;Zheng, Weigang;Wilson, Kenneth;Li, Wenjing;Xu, Pengjun;Xu, Pengjun;Wilson, Kenneth;Soberon, Mario;Bravo, Alejandra

作者机构：

期刊名称：ELIFE （ 影响因子：8.146； 五年影响因子：9.059 ）

ISSN： 2050-084X

年卷期： 2021 年 10 卷

页码：

收录情况： SCI

摘要： Bacillus thuringiensis (Bt) crops have been widely planted and the effects of Bt-crops on populations of the target and non-target insect pests have been well studied. However, the effects of Bt-crops exposure on microorganisms that interact with crop pests have not previously been quantified. Here, we use laboratory and field data to show that infection of Helicoverpa armigera with a densovirus (HaDV2) is associated with its enhanced growth and tolerance to Bt-cotton. Moreover, field monitoring showed a much higher incidence of cotton bollworm infection with HaDV2 in regions cultivated with Bt-cotton than in regions without it, with the rate of densovirus infection increasing with increasing use of Bt-cotton. RNA-seq suggested tolerance to both baculovirus and Cry1Ac were enhanced via the immune-related pathways. These findings suggest that exposure to Bt-crops has selected for beneficial interactions between the target pest and a mutualistic microorganism that enhances its performance on Bt-crops under field conditions.

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