Genomic variation in weedy and cultivated broomcorn millet accessions uncovers the genetic architecture of agronomic traits

文献类型： 外文期刊

第一作者： Lu, Qiong

作者： Lu, Qiong;Zhao, Hainan;Zhang, Zhengquan;Bai, Yuhe;Zhao, Haiming;Zheng, Yunxiao;Zhao, Haiyue;Gong, Huihui;Chen, Lingwei;Deng, Xizhen;Hong, Xiangde;Liu, Tianxiang;Li, Baichuan;Bai, Yan;Xin, Beibei;Chen, Jian;E., Lizhu;Lai, Jinsheng;Song, Weibin;Zhao, Hainan;Lai, Jinsheng;Song, Weibin;Liu, Guoqing;Li, Haiquan;Liu, Minxuan;Lu, Ping;Wen, Feng;Wang, Lun;Li, Zhijiang;Li, Hai;Zhang, Like;Ma, Wenhui;Liu, Chunqing;Bai, Yan;Lai, Jinsheng;Song, Weibin;Lai, Jinsheng;Song, Weibin

作者机构：

期刊名称：NATURE GENETICS （ 影响因子：30.8； 五年影响因子：37.4 ）

ISSN： 1061-4036

年卷期： 2024 年 56 卷 5 期

页码：

收录情况： SCI

摘要： Large-scale genomic variations are fundamental resources for crop genetics and breeding. Here we sequenced 1,904 genomes of broomcorn millet to an average of 40x sequencing depth and constructed a comprehensive variation map of weedy and cultivated accessions. Being one of the oldest cultivated crops, broomcorn millet has extremely low nucleotide diversity and remarkably rapid decay of linkage disequilibrium. Genome-wide association studies identified 186 loci for 12 agronomic traits. Many causative candidate genes, such as PmGW8 for grain size and PmLG1 for panicle shape, showed strong selection signatures during domestication. Weedy accessions contained many beneficial variations for the grain traits that are largely lost in cultivated accessions. Weedy and cultivated broomcorn millet have adopted different loci controlling flowering time for regional adaptation in parallel. Our study uncovers the unique population genomic features of broomcorn millet and provides an agronomically important resource for cereal crops. A comprehensive variation map constructed by deep sequencing 1,904 accessions of weedy and cultivated broomcorn millet sheds light on the genetic architecture of agronomic traits during domestication.

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