The HuangZaoSi Maize Genome Provides Insights into Genomic Variation and Improvement History of Maize

文献类型： 外文期刊

第一作者： Li, Chunhui

作者： Li, Chunhui;Song, Wei;Zhang, Ruyang;Shi, Zi;Wang, Xiaqing;Wang, Ronghuan;Wang, Fengge;Wang, Jidong;Zhao, Yanxin;Su, Aiguo;Wang, Shuai;Luo, Meijie;Wang, Shuaishuai;Zhang, Yunxia;Ge, Jianrong;Wang, Yuandong;Zhao, Jiuran;Luo, Yingfeng;Gao, Shenghan;Tan, Xinyu;Yuan, Ye;Bi, Xiaochun;Hu, Songnian;Li, Xin;He, Hang;Li, Xin;He, Hang;Yan, Jianbing;Hu, Songnian

作者机构：

关键词： HZS; comparative genomic analysis; tandem duplication; pedigree analysis; identity-by-descent

期刊名称：MOLECULAR PLANT （ 影响因子：13.164； 五年影响因子：16.357 ）

ISSN： 1674-2052

年卷期： 2019 年 12 卷 3 期

页码：

收录情况： SCI

摘要： Maize is a globally important crop that was a classic model plant for genetic studies. Here, we report a 2.2 Gb draft genome sequence of an elite maize line, HuangZaoSi (HZS). Hybrids bred from HZS-improved lines (HILs) are planted in more than 60% of maize fields in China. Proteome clustering of six completed sequenced maize genomes show that 638 proteins fall into 264 HZS-specific gene families with the majority of contributions from tandem duplication events. Resequencing and comparative analysis of 40 HZS-related lines reveals the breeding history of HILs. More than 60% of identified selective sweeps were clustered in identity-by-descent conserved regions, and yield-related genes/QTLs were enriched in HZS characteristic selected regions. Furthermore, we demonstrated that HZS-specific family genes were not uniformly distributed in the genome but enriched in improvement/function-related genomic regions. This study provides an important and novel resource for maize genome research and expands our knowledge on the breadth of genomic variation and improvement history of maize.

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