A graph-based genome and pan-genome variation of the model plant Setaria

作者：Qiang He, Shan Tang, Hui Zhi, Jinfeng Chen, Jun Zhang, Hongkai Liang, Ornob Alam, Hongbo Li, Hui Zhang, Lihe Xing, Xukai Li, Wei Zhang, Hailong Wang, Junpeng Shi, H. Du, Hongpo Wu, Liwei Wang, Ping Yang, Lu Xing, Hongshan Yan, Z. Song, Jinrong Liu, Haigang Wang, X. Tian, Z. Qiao, Guojun Feng, Ruifeng Guo, Wenjuan Zhu, Yuemei Ren, Hongbo Hao, Mingzhe Li, Aiying Zhang, Erhu Guo, Feng Yan, Qing Li, Yanli Liu, B. Tian, Xiaoqin Zhao, R. Jia, B. Feng, Jiewei Zhang, Jianhua Wei, Jinsheng Lai, G. Jia, M. Purugganan, Xianmin Diao · 发表于：Nature Genetics · 年份：2023 · DOI：10.1038/s41588-023-01423-w · 被引用次数：172 · 研究领域：Medicine

Setaria pan-genome constructed using genome assemblies of 110 representative accessions and variation analyses provides insights into foxtail millet domestication and the genetic basis for crop improvement. Setaria italica (foxtail millet), a founder crop of East Asian agriculture, is a model plant for C4 photosynthesis and developing approaches to adaptive breeding across multiple climates. Here we established the Setaria pan-genome by assembling 110 representative genomes from a worldwide collection. The pan-genome is composed of 73,528 gene families, of which 23.8%, 42.9%, 29.4% and 3.9% are core, soft core, dispensable and private genes, respectively; 202,884 nonredundant structural variants were also detected. The characterization of pan-genomic variants suggests their importance during foxtail millet domestication and improvement, as exemplified by the identification of the yield gene SiGW3 , where a 366-bp presence/absence promoter variant accompanies gene expression variation. We developed a graph-based genome and performed large-scale genetic studies for 68 traits across 13 environments, identifying potential genes for millet improvement at different geographic sites. These can be used in marker-assisted breeding, genomic selection and genome editing to accelerate crop improvement under different climatic conditions.