The ties of brotherhood between japonica and indica rice for regional adaptation  

作　　者：Man Wang Jiehu Chen Feng Zhou Jianming Yuan Libin Chen Rongling Wu Yaoguang Liu Qunyu Zhang 

机构地区：[1]State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources,College of Life Sciences,South China Agricultural University,Guangzhou 510642,China [2]Guangdong Laboratory for Lingnan Modern Agriculture,Guangzhou 510642,China [3]Science Corporation of Gene,Guangzhou 510000,China [4]Center for Statistical Genetics,The Pennsylvania State University,Hershey PA 17033,USA [5]SCAU Main Campus Teaching&Research Base,Guangzhou 510642,China

出　　处：《Science China(Life Sciences)》2022年第7期1369-1379,共11页中国科学（生命科学英文版）

基　　金：supported by the National Key Program on Transgenic Research from the Ministry of Agriculture of China(2016ZX08009002-003-003);Natural Science Foundation of Guangdong Province of China(2015A030313414);Science and Technology Program of Guangzhou,China(201607010196)。

摘　　要：Selection of beneficial genomic variants was crucial for regional adaptation of crops during domestication,but the underlying genomic basis remains largely unexplored.Here we report a genome-wide selective-sweep analysis of 655 japonica and 1,205 indica accessions selected from 2,673 landraces through principal component analysis to identify 5,636 non-synonymous single nucleotide polymorphisms(SNPs)fixed in at least one subspecies.We classified these SNPs into three groups,jiS(japonica-and indica-selected),jS(japonica-selected only),and iS(indica-selected only),and documented evidence for selection acting on these groups,their relation to yield-related traits,such as heading date,and their practical value in cropping area prediction.We also demonstrated the role of a jiS-SNP-containing gene in temperature adaptability.Our study informs genes underpinning adaptation that may shape Green Super Rice and proposes a time-saving,cost-reducing selection strategy of genomic breeding,sweep-SNP-guided selection,for developing regionally-adapted heterosis.

关 键 词：selective sweeps indica-japonica differentiation geographic adaptation 

分 类 号：S511[农业科学—作物学]