Whole-genome resequencing reveals Brassica napus origin and genetic loci involved in its improvement
文献类型： 外文期刊
第一作者： Lu, Kun
作者： Lu, Kun;Wei, Lijuan;Liu, Miao;Zhang, Chao;Chen, Zhiyou;Xiao, Zhongchun;Jian, Hongju;Zhang, Kai;Du, Hai;Qu, Cunming;Qian, Wei;Liu, Liezhao;Wang, Rui;Zou, Qingyuan;Ying, Jiamin;Xu, Xingfu;Mei, Jiaqing;Liang, Ying;Chai, You-Rong;Tang, Zhanglin;Wan, Huafang;Ni, Yu;He, Yajun;Lin, Na;Fan, Yonghai;Sun, Wei;Li, Jiana;Lu, Kun;Wei, Lijuan;Du, Hai;Qu, Cunming;Qian, Wei;Liu, Liezhao;Wang, Rui;Xu, Xingfu;Mei, Jiaqing;Liang, Ying;Chai, You-Rong;Tang, Zhanglin;Ni, Yu;Li, Nan-Nan;Li, Jiana;Lu, Kun;Du, Hai;Cheng, Xinchao;Qu, Cunming;Qian, Wei;Liu, Liezhao;Wang, Rui;Liang, Ying;Chai, You-Rong;Tang, Zhanglin;Ni, Yu;Li, Jiana;Li, Xiaolong;Wang, Yuntong;Zhou, Gang;Zheng, Hongkun;Wu, Jian;Cheng, Feng;Wang, Xiaowu;Paterson, Andrew H.
作者机构：
期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.919； 五年影响因子：15.805 ）
ISSN： 2041-1723
年卷期： 2019 年 10 卷
页码：
收录情况： SCI
摘要： Brassica napus (2n = 4x = 38, AACC) is an important allopolyploid crop derived from interspecific crosses between Brassica rapa (2n = 2x = 20, AA) and Brassica oleracea (2n = 2x = 18, CC). However, no truly wild B. napus populations are known; its origin and improvement processes remain unclear. Here, we resequence 588 B. napus accessions. We uncover that the A subgenome may evolve from the ancestor of European turnip and the C subgenome may evolve from the common ancestor of kohlrabi, cauliflower, broccoli, and Chinese kale. Additionally, winter oilseed may be the original form of B. napus. Subgenome-specific selection of defense-response genes has contributed to environmental adaptation after formation of the species, whereas asymmetrical subgenomic selection has led to ecotype change. By integrating genome-wide association studies, selection signals, and transcriptome analyses, we identify genes associated with improved stress tolerance, oil content, seed quality, and ecotype improvement. They are candidates for further functional characterization and genetic improvement of B. napus.
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