Whole-genome resequencing reveals signature of local adaptation and divergence in wild soybean

文献类型： 外文期刊

第一作者： Wang, Jiao

作者： Wang, Jiao;Liao, Xiliang;Wang, Zhiyu;Zhang, Peipei;Cheng, Hao;Wang, Qing;Bhat, Javaid Akhter;Wang, Hui;Huang, Fang;Yu, Deyue;Hu, Zhenbin;Li, Wei;Liu, Biao;Zhang, Hengyou

作者机构：

关键词： genome-environment association; local adaptation; population divergence; wild soybean

期刊名称：EVOLUTIONARY APPLICATIONS （ 影响因子：4.929； 五年影响因子：5.453 ）

ISSN： 1752-4571

年卷期： 2022 年 15 卷 11 期

页码：

收录情况： SCI

摘要： Global climate change has threatened world crop production and food security. Decoding the adaptive genetic basis of wild relatives provides an invaluable genomic resource for climate-smart crop breedinG. Here, we performed whole-genome sequencing of 185 diverse wild soybean (Glycine soja) accessions collected from three major agro-ecological zones in China to parse the genomic basis of local adaptation in wild soybean. The population genomic diversity pattern exhibited clear agro-ecological zone-based population structure, and multiple environmental factors were observed to contribute to the genetic divergence. Demographic analysis shows that wild soybeans from the three ecological zones diverged about 1 x 10(5) years ago, and then the effective population sizes have undergone different degrees of expansions. Genome-environment association identified multiple genes involved in the local adaptation, such as flowering time and temperature-related genes. A locus containing two adjacent MADS-box transcription factors on chromosome 19 was identified for multiple environmental factors, and it experienced positive selection that enables the adaptation to high-latitude environment. This study provides insights into the genetic mechanism of ecological adaptation in wild soybean that may facilitate climate-resilient soybean breeding.

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