The draft genome of Tibetan hulless barley reveals adaptive patterns to the high stressful Tibetan Plateau

文献类型: 外文期刊

第一作者: Zeng, Xingquan

作者: Zeng, Xingquan;Tang, Yawei;Wang, Yulin;Xu, Qijun;Yuan, Hongjun;Liu, Renjian;WangMu, QiMei;DunZhu, DaWa;LuoBu, ZhaXi;TaBa, XiongNu;Gao, Liyun;Tashi, Nyima;Zeng, Xingquan;Tang, Yawei;Wang, Yulin;Xu, Qijun;Yuan, Hongjun;Liu, Renjian;WangMu, QiMei;DunZhu, DaWa;LuoBu, ZhaXi;TaBa, XiongNu;Gao, Liyun;Tashi, Nyima;Long, Hai;Deng, Guangbing;Pan, Zhifen;Chen, Xin;Liang, Junjun;Yu, Shuiyang;Yu, Maoqun;Wang, Zhuo;Zhao, Shancen;Huang, Zhiyong;Mao, Likai;Yao, Xiaoming;Li, Xiangfeng;Bai, Lijun;Chen, Ming;Yu, Lili;Zheng, Yuan;Guang, Xuanmin;Li, Jiang;Deng, Cao;Hu, Wushu;Chen, Chunhai;Lv, Xiaodan;Fang, Xiaodong;Li, Xiangfeng;Ben Abu, Yuval;Nevo, Eviatar;Wang, Jun;Wang, Jun;Wang, Jun

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关键词: Tibetan hulless barley;Triticeae evolution;genetic diversity;adaptation;selective sweep

期刊名称:PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA ( 影响因子:11.205; 五年影响因子:12.291 )

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收录情况: SCI

摘要: The Tibetan hulless barley (Hordeum vulgare L. var. nudum), also called "Qingke" in Chinese and "Ne" in Tibetan, is the staple food for Tibetans and an important livestock feed in the Tibetan Plateau. The diploid nature and adaptation to diverse environments of the highland give it unique resources for genetic research and crop improvement. Here we produced a 3.89-Gb draft assembly of Tibetan hulless barley with 36,151 predicted protein-coding genes. Comparative analyses revealed the divergence times and synteny between barley and other representative Poaceae genomes. The expansion of the gene family related to stress responses was found in Tibetan hulless barley. Resequencing of 10 barley accessions uncovered high levels of genetic variation in Tibetan wild barley and genetic divergence between Tibetan and non-Tibetan barley genomes. Selective sweep analyses demonstrate adaptive correlations of genes under selection with extensive environmental variables. Our results not only construct a genomic framework for crop improvement but also provide evolutionary insights of highland adaptation of Tibetan hulless barley.

分类号: N

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