Resequencing a core collection of upland cotton identifies genomic variation and loci influencing fiber quality and yield

文献类型： 外文期刊

第一作者： Ma, Zhiying;;Shoupu He;;Xingfen Wang;;Junling Sun;;Yan Zhang;;Guiyin Zhang;;Liqiang Wu;;Zhikun Li;;Zhihao Liu

作者： Ma, Zhiying;Shoupu He;Xingfen Wang;Junling Sun;Yan Zhang;Guiyin Zhang;Liqiang Wu;Zhikun Li;Zhihao Liu;Gaofei Sun;Yuanyuan Yan;Yinhua Jia;Jun Yang;Zhaoe Pan;Qishen Gu;Xueyuan Li;Zhengwen Sun;Panhong Dai;Zhengwen Liu;Wenfang Gong;Jinhua Wu;Mi Wang;Hengwei Liu;Keyun Feng;Huifeng Ke;Junduo Wang;Hongyu Lan;Guoning Wang;Jun Peng;Nan Wang;Liru Wang;Baoyin Pang;Zhen Peng;Ruiqiang Li;Shilin Tian;Xiongming Du

作者机构：

期刊名称：NATURE GENETICS （ 影响因子：38.33； 五年影响因子：36.431 ）

ISSN： 1061-4036

年卷期： 2018 年 50 卷 6 期

页码：

收录情况： SCI

摘要： Upland cotton is the most important natural-fiber crop. The genomic variation of diverse germplasms and alleles underpinning fiber quality and yield should be extensively explored. Here, we resequenced a core collection comprising 419 accessions with 6.55-fold coverage depth and identified approximately 3.66 million SNPs for evaluating the genomic variation. We performed phenotyping across 12 environments and conducted genome-wide association study of 13 fiber-related traits. 7,383 unique SNPs were significantly associated with these traits and were located within or near 4,820 genes; more associated loci were detected for fiber quality than fiber yield, and more fiber genes were detected in the D than the A subgenome. Several previously undescribed causal genes for days to flowering, fiber length, and fiber strength were identified. Phenotypic selection for these traits increased the frequency of elite alleles during domestication and breeding. These results provide targets for molecular selection and genetic manipulation in cotton improvement.

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