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

Journal of Genetics and Genomics 2022年第3期49卷 185-194页

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 State Key Laboratory of Crop Stress Adaptation and Improvement School of Life SciencesCollege of AgricultureHenan UniversityKaifengHenan 475004China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of SciencesBeijing 100093China School of Geography and Environmental Sciences Nanjing UniversityNanjingJiangsu 210023China Department of Evolutionary and Environmental Biology University of HaifaHaifa 3498838Israel Shenzhen Research Institute of Henan University ShenzhenGuangdong 518000China

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 ***,the phylogenetic relationship and dispersion history of *** in China has not been scientifically *** this study,we genotyped 208 accessions(with 104 in China)using dd RAD sequencing and 55K SNP array,and classified the population into six *** 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 *** also established the correlation of SNP-based,karyotypebased and spike-morphology-based techniques to demonstrate the internal classification of ***,and developed consensus dataset with 1245 putative accessions by merging data previously *** 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 *** developing the consensus phylogenetic relationships of ***,our work validated the hypothesis on the dispersal history of *** 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

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