Analysis of allohexaploid wheatgrass genome reveals its Y haplome origin in Triticeae and high-altitude adaptation

Yi Xiong, Shuai Yuan, Yanli Xiong, Lizuiyue Li, Jinghan Peng, Jin Zhang, Xing Fan, Chengzhi Jiang, Li-na Sha, Zhaoting Wang, Xue Peng, Zecheng Zhang, Qingqing Yu, Xiong Lei, Zhixiao Dong, Yingjie Liu, Junming Zhao, Guangrong Li, Zujun Yang, Shangang Jia, Daxu Li, Ming Sun, Shiqie Bai (), Jianquan Liu (), Yongzhi Yang () and Xiao Ma ()
Additional contact information
Yi Xiong: Sichuan Agricultural University
Shuai Yuan: Lanzhou University
Yanli Xiong: Sichuan Agricultural University
Lizuiyue Li: Southwest Forestry University
Jinghan Peng: Sichuan Agricultural University
Jin Zhang: Lanzhou University
Xing Fan: Sichuan Agricultural University
Chengzhi Jiang: University of Electronic Science and Technology of China
Li-na Sha: Sichuan Agricultural University
Zhaoting Wang: Sichuan Agricultural University
Xue Peng: Sichuan Agricultural University
Zecheng Zhang: Sichuan Agricultural University
Qingqing Yu: Sichuan Academy of Grassland Sciences
Xiong Lei: Sichuan Academy of Grassland Sciences
Zhixiao Dong: Sichuan Agricultural University
Yingjie Liu: Sichuan Agricultural University
Junming Zhao: Sichuan Agricultural University
Guangrong Li: University of Electronic Science and Technology of China
Zujun Yang: University of Electronic Science and Technology of China
Shangang Jia: China Agricultural University
Daxu Li: Sichuan Academy of Grassland Sciences
Ming Sun: Southwest University of Science and Technology
Shiqie Bai: Southwest University of Science and Technology
Jianquan Liu: Lanzhou University
Yongzhi Yang: Lanzhou University
Xiao Ma: Sichuan Agricultural University

Nature Communications, 2025, vol. 16, issue 1, 1-18

Abstract: Abstract Phylogenetic origin of the Y haplome present in allopolyploid Triticeae species remains unknown. Here, we report the 10.47 Gb chromosome-scale genome of allohexaploid Elymus nutans (StStYYHH). Phylogenomic analyses reveal that the Y haplome is sister to the clade comprising V and Jv haplomes from Dasypyrum and Thinopyum. In addition, H haplome from the Hordeum-like ancestor, St haplome from the Pseudoroegneria-like ancestor and Y haplome are placed in the successively diverged clades. Resequencing data reveal the allopolyploid origins with St, Y, and H haplome combinations in Elymus. Population genomic analyses indicate that E. nutans has expanded from medium to high/low-altitude regions. Phenotype/environmental association analyses identify MAPKKK18 promoter mutations reducing its expression, aiding UV-B adaptation in high-altitude populations. These findings enhance understanding of allopolyploid evolution and aid in breeding forage and cereal crops through intergeneric hybridization within Triticeae.

Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-025-58341-0 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-58341-0

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-025-58341-0

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().