The high-quality genome of Brassica napus cultivar 'ZS11' reveals the introgression history in semi-winter morphotype

文献类型： 外文期刊

第一作者： Hu, Qiong

作者： Hu, Qiong;Tong, Chaobo;Huang, Shunmou;Yu, Jingyin;Mei, Desheng;Shi, Jiaqin;Wang, Xinfa;Hu, Zhiyong;Dong, Caihua;Li, Jun;Liu, Shengyi;Hua, Wei;Wang, Hanzhong;Fan, Guangyi;Liu, Weiqing;Chen, Wenbin;Zeng, Peng;Wang, Xi;Liang, Xinming;Huang, Guodong;Zhang, He;Zhang, Yaolei;Li, Liangwei;Shi, Chengcheng;Wang, Jiahao;Xu, Xun;Liu, Xin;Zhou, Yongming;Meng, Jinling;Liu, Kede;Long, Yan;Guan, Mei;Guan, Chunyun;Chalhoub, Boulos;Li, Jiana;Du, Dezhi;Qi, Cunkou;Jiang, Liangcai;Fan, Guangyi;Liu, Xin;Fan, Guangyi;Lee, Simon Ming-Yuen;Fan, Guangyi;Lee, Simon Ming-Yuen

作者机构：

关键词： Brassica napus;allotetraploid;genome;homoeolog;introgression;next-generation sequencing technologies;polyploid;subgenome;ZS11

期刊名称：PLANT JOURNAL （ 影响因子：6.417； 五年影响因子：7.627 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Allotetraploid oilseed rape (Brassica napus L.) is an agriculturally important crop. Cultivation and breeding of B. napus by humans has resulted in numerous genetically diverse morphotypes with optimized agronomic traits and ecophysiological adaptation. To further understand the genetic basis of diversification and adaptation, we report a draft genome of an Asian semi-winter oilseed rape cultivar 'ZS11' and its comprehensive genomic comparison with the genomes of the winter-type cultivar 'Darmor-bzh' as well as two progenitors. The integrated BAC-to-BAC and whole-genome shotgun sequencing strategies were effective in the assembly of repetitive regions (especially young long terminal repeats) and resulted in a high-quality genome assembly of B. napus 'ZS11'. Within a short evolutionary period (similar to 6700years ago), semi-winter-type 'ZS11' and the winter-type 'Darmor-bzh' maintained highly genomic collinearity. Even so, certain genetic differences were also detected in two morphotypes. Relative to Darmor-bzh', both two subgenomes of 'ZS11' are closely related to its progenitors, and the 'ZS11' genome harbored several specific segmental homoeologous exchanges (HEs). Furthermore, the semi-winter-type 'ZS11' underwent potential genomic introgressions with B. rapa (A(r)). Some of these genetic differences were associated with key agronomic traits. A key gene of A03.FLC3 regulating vernalization-responsive flowering time in 'ZS11' was first experienced HE, and then underwent genomic introgression event with A(r), which potentially has led to genetic differences in controlling vernalization in the semi-winter types. Our observations improved our understanding of the genetic diversity of different B. napus morphotypes and the cultivation history of semi-winter oilseed rape in Asia.

分类号： Q94

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