Whole-Genome Resequencing of Xiangxi Cattle Identifies Genomic Diversity and Selection Signatures

文献类型： 外文期刊

第一作者： Luo, Xiaoyu

作者： Luo, Xiaoyu;Li, Jianbo;Lei, Hong;Yi, Kangle;Luo, Xiaoyu;Xiao, Chentong;Sun, Luyang;Xiang, Weixuan;Chen, Ningbo;Lei, Chuzhao;Li, Jianbo;Lei, Hong;Long, Yun;Long, Ting;Yi, Kangle;Xiang, Weixuan;Long, Yun;Long, Ting;Suolang, Quji

作者机构：

关键词： Xiangxi cattle; genetic diversity; selection signatures; DNAJC8; whole genome analysis

期刊名称：FRONTIERS IN GENETICS （ 影响因子：4.772； 五年影响因子：4.933 ）

ISSN：

年卷期： 2022 年 13 卷

页码：

收录情况： SCI

摘要： Understanding the genetic diversity in Xiangxi cattle may facilitate our efforts toward further breeding programs. Here we compared 23 Xiangxi cattle with 78 published genomes of 6 worldwide representative breeds to characterize the genomic variations of Xiangxi cattle. Based on clustering models in population structure analysis, we displayed that Xiangxi cattle had a mutual genome ancestor with Chinese indicine, Indian indicine, and East Asian taurine. Population genetic diversity was analyzed by four methods (nucleotide diversity, inbreeding coefficient, linkage disequilibrium decay and runs of homozygosity), and we found that Xiangxi cattle had higher genomic diversity and weaker artificial selection than commercial breed cattle. Using four testing methods (theta pi, CLR, F-ST, and XP-EHH), we explored positive selection regions harboring genes in Xiangxi cattle, which were related to reproduction, growth, meat quality, heat tolerance, and immune response. Our findings revealed the extent of sequence variation in Xiangxi cattle at the genome-wide level. All of our fruitful results can bring about a valuable genomic resource for genetic studies and breed protection in the future.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序