TY - JOUR
T1 - New insights into the dispersion history and adaptive evolution of taxon Aegilops tauschii in China
AU - Li, Hao
AU - Nie, Fang
AU - Zhu, Lele
AU - Mu, Menghua
AU - Fan, Ruixiao
AU - Li, Jingyao
AU - Shaheen, Aaqib
AU - Liu, Yifan
AU - Li, Can
AU - Liu, Wenjuan
AU - Liang, Huihui
AU - Zhao, Xinpeng
AU - Bai, Shenglong
AU - Guo, Guanghui
AU - Li, Zheng
AU - Hu, Yiheng
AU - Jiao, Yuannian
AU - Adams, Jonathan
AU - Distelfeld, Assaf
AU - Sun, Guiling
AU - Li, Suoping
AU - Zhou, Yun
AU - Song, Chun Peng
N1 - Publisher Copyright:
© 2021 The Authors
PY - 2022/3
Y1 - 2022/3
N2 - 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 ddRAD 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, karyotype-based 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 3 and 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.
AB - 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 ddRAD 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, karyotype-based 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 3 and 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.
KW - Aegilops tauschii
KW - Consensus dataset
KW - Dispersion history
KW - Genetic diversity
KW - Phylogenetic relationship
UR - http://www.scopus.com/inward/record.url?scp=85122611025&partnerID=8YFLogxK
U2 - 10.1016/j.jgg.2021.11.004
DO - 10.1016/j.jgg.2021.11.004
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C2 - 34838726
AN - SCOPUS:85122611025
SN - 1673-8527
VL - 49
SP - 185
EP - 194
JO - Journal of Genetics and Genomics
JF - Journal of Genetics and Genomics
IS - 3
ER -