文献类型： 外文期刊
第一作者： Feng, Hao
作者： Feng, Hao;Du, Qingwei;Jiang, Ying;Zhang, Haiwen;Gu, Mengxue;Gao, Shanshan;Zhang, Xinjie;Song, Yameng;Wei, Jianhua;Li, Ruifen;Jia, Yong;He, Tianhua;Chapman, Brett;Li, Chengdao;Wang, Yibin;Yu, Jiaxin;Jiang, Mengwei;Zhang, Xingtan;Garg, Vanika;Varshney, Rajeev K.;Li, Chengdao;Li, Chengdao
作者机构：
期刊名称：NATURE PLANTS （ 影响因子：13.6； 五年影响因子：17.0 ）
ISSN： 2055-026X
年卷期： 2025 年 11 卷 3 期
页码：
收录情况： SCI
摘要： Crop wild relatives (CWRs) are invaluable for crop improvement. Among these, Hordeum I-genome species exhibit exceptional tolerance to alkali and salt stresses. Here we present a chromosome-scale genome assembly of Hordeum brevisubulatum (II, 2n = 2x =14) and genome resequencing of 38 diploid germplasms spanning 7 I-genome species. We reveal that the adaptive evolution of the H. brevisubulatum genome is shaped by structural variations, some of which may contribute to its adaptation to high alkali and salt environments. Evolutionary duplication of the stress sensor-responder module CaBP-NRT2 and the horizontally transferred fungal gene Fhb7 were identified as novel alkaline-saline tolerance mechanisms. We also demonstrate the potential of the Hordeum I genome in crop breeding through the newly synthesized hexaploid Tritordeum (AABBII) with enhanced alkaline-saline tolerance. Our study fills critical gaps in Hordeum genomics and CWR research, advancing introgression of CWR resources into current crops for sustainable agriculture.
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