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

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 SunSuoping Li, Yun Zhou, Chun Peng Song

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)185-194
Number of pages10
JournalJournal of Genetics and Genomics
Volume49
Issue number3
DOIs
StatePublished - Mar 2022
Externally publishedYes

Keywords

  • Aegilops tauschii
  • Consensus dataset
  • Dispersion history
  • Genetic diversity
  • Phylogenetic relationship

Fingerprint

Dive into the research topics of 'New insights into the dispersion history and adaptive evolution of taxon Aegilops tauschii in China'. Together they form a unique fingerprint.

Cite this