设为首页  |  加入收藏  |  联系我们  |  English  |  中国科学院  
 首  页  实验室概况 研究队伍 科研工作 平台建设 开放交流 人才培养 规章制度
 
  当前位置:首页 > 最新论文  
Triticum Population Sequencing Provides Insights into Wheat Adaptation


Yao Zhou, Xuebo Zhao, Yiwen Li, Jun Xu, Aoyue Bi, Lipeng Kang, Daxing Xu, Haofeng Chen, Ying Wang, Yuan-ge Wang, Sanyang Liu, Chengzhi Jiao, Hongfeng Lu, Jing Wang, Changbin Yin, Yuling Jiao & Fei Lu


Nature Genetics
DOI:10.1038/s41588-020-00722-w


Abstract

Bread wheat expanded its habitat from a core area of the Fertile Crescent to global environments within ~10,000 years. The genetic mechanisms of this remarkable evolutionary success are not well understood. By whole-genome sequencing of populations from 25 subspecies within the genera Triticum and Aegilops, we identified composite introgression from wild populations contributing to a substantial portion (4–32%) of the bread wheat genome, which increased the genetic diversity of bread wheat and allowed its divergent adaptation. Meanwhile, convergent adaptation to human selection showed 2- to 16-fold enrichment relative to random expectation—a certain set of genes were repeatedly selected in Triticum species despite their drastic differences in ploidy levels and growing zones, indicating the important role of evolutionary constraints in shaping the adaptive landscape of bread wheat. These results showed the genetic necessities of wheat as a global crop and provided new perspectives on transferring adaptive success across species for crop improvement.
 
【打印本页】【关闭本页】
Copyright © 植物细胞与染色体工程国家重点实验室(中国科学院遗传与发育生物学研究所)
地址:北京市朝阳区北辰西路1号院2号 邮编:100101 电话: 010-64806537 传真: 010-64806537