数字农科院2.0

Adaptive evolution to the natural and anthropogenic environment in a global invasive crop pest, the cotton bollworm

文献类型： 外文期刊

作者： Minghui Jin;Henry L. North;Yan Peng;Hangwei Liu;Bo Liu;Ruiqing Pan;Yan Zhou;Weigang Zheng;Kaiyu Liu;Bo Yang;Lei Zhang;Qi Xu;Samia Elfekih;Wendy A. Valencia-Montoya;Tom Walsh;Peng Cui;Yongfeng Zhou;Kenneth Wilson;Chris Jiggins;Kongming Wu;Yutao Xiao

作者机构：

关键词： adaptive evolution;genome;GWAS;population genomics

期刊名称： The Innovation

ISSN： 2666-6758

年卷期： 2023 年 4 卷 4 期

页码：

收录情况： 不在遴选数据库范围（2023版）

摘要： The cotton bollworm, Helicoverpa armigera, is set to become the most economically devastating crop pest in the world, threatening food security and biosafety as its range expands across the globe. Key to understanding the eco-evolutionary dynamics of H. armigera, and thus its management, is an understanding of population connectivity and the adaptations that allow the pest to establish in unique environments. We assembled a chromosome-scale reference genome and re-sequenced 503 individuals spanning the species range to delineate global patterns of connectivity, uncovering a previously cryptic population structure. Using a genome-wide association study (GWAS) and cell line expression of major effect loci, we show that adaptive changes in a temperature- and light-sensitive developmental pathway enable facultative diapause and that adaptation of trehalose synthesis and transport underlies cold tolerance in extreme environments. Incorporating extensive pesticide resistance monitoring, we also characterize a suite of novel pesticide and Bt resistance alleles under selection in East China. These findings offer avenues for more effective management strategies and provide insight into how insects adapt to variable climatic conditions and newly colonized environments.

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