New insights into the dispersion history and adaptive evolution of taxon Aegilops tauschii in China  

作　　者：Hao Li Fang Nie Lele Zhu Menghua Mu Ruixiao Fan Jingyao Li Aaqib Shaheen Yifan Liu Can Li Wenjuan Liu Huihui Liang Xinpeng Zhao Shenglong Bai Guanghui Guo Zheng Li Yiheng Hu Yuannian Jiao Jonathan Adams Assaf Distelfeld Guiling Sun Suoping Li Yun Zhou Chun-Peng Song 

机构地区：[1]State Key Laboratory of Crop Stress Adaptation and Improvement,School of Life Sciences,College of Agriculture,Henan University,Kaifeng,Henan 475004,China [2]State Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China [3]School of Geography and Environmental Sciences,Nanjing University,Nanjing,Jiangsu 210023,China [4]Department of Evolutionary and Environmental Biology,University of Haifa,Haifa 3498838,Israel [5]Shenzhen Research Institute of Henan University,Shenzhen,Guangdong 518000,China

出　　处：《Journal of Genetics and Genomics》2022年第3期185-194,共10页遗传学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(32001492);the Ministry of Agriculture of China(2016ZX08009);the Natural Science Foundation of Henan(202300410053)。

摘　　要：Aegilops tauschii,the wild progenitor of wheat D-genome and a valuable germplasm for wheat improvement,has a wide natural distribution from eastern Turkey to China.However,the phylogenetic relationship and dispersion history of Ae.tauschii in China has not been scientifically clarified.In this study,we genotyped 208 accessions(with 104 in China)using dd RAD sequencing and 55K SNP array,and classified the population into six sublineages.Three possible spreading routes or events were identified,resulting in specific distribution patterns,with four sublineages found in Xinjiang,one in Qinghai,two in Shaanxi and one in Henan.We also established the correlation of SNP-based,karyotypebased and spike-morphology-based techniques to demonstrate the internal classification of Ae.tauschii,and developed consensus dataset with 1245 putative accessions by merging data previously published.Our analysis suggested that eight inter-lineage accessions could be assigned to the putative Lineage 3and these accessions would help to conserve the genetic diversity of the species.By developing the consensus phylogenetic relationships of Ae.tauschii,our work validated the hypothesis on the dispersal history of Ae.tauschii in China,and contributed to the efficient and comprehensive germplasm-mining of the species.

关 键 词：Aegilops tauschii Consensus dataset Dispersion history Genetic diversity Phylogenetic relationship 

分 类 号：S512.1[农业科学—作物学]