Introgression, admixture, and selection facilitate genetic adaptation to high-altitude environments in cattle

文献类型： 外文期刊

第一作者： Wang, Xiuge

作者： Wang, Xiuge;Ju, Zhihua;Jiang, Qiang;Zhong, Jifeng;Liu, Chengkun;Wang, Jinpeng;Zhao, Han;Gao, Yaping;Liu, Wenhao;Gao, Yundong;Yang, Chunhong;Hou, Minghai;Huang, Jinming;Zhong, Jifeng;Hoff, Jesse L.;Schnabel, Robert D.;Decker, Jared E.;Taylor, Jeremy F.;Schnabel, Robert D.;Zhao, Han;Huang, Jinming;Wang, Lingling;Gao, Yundong;Huang, Ning;Regitano, Luciana C. A.;Porto-Neto, Laercio R.

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关键词： Population structure; Rapid adaptation; High-density genotyping; Selective signatures; Bos species

期刊名称：GENOMICS （ 影响因子：5.736； 五年影响因子：4.939 ）

ISSN： 0888-7543

年卷期： 2021 年 113 卷 3 期

页码：

收录情况： SCI

摘要： Domestication and subsequent selection of cattle to form breeds and biological types that can adapt to different environments partitioned ancestral genetic diversity into distinct modern lineages. Genome-wide selection particularly for adaptation to extreme environments left detectable signatures genome-wide. We used highdensity genotype data for 42 cattle breeds and identified the influence of Bos grunniens and Bos javanicus on the formation of Chinese indicine breeds that led to their divergence from India-origin zebu. We also found evidence for introgression, admixture, and migration in most of the Chinese breeds. Selection signature analyses between high-altitude (>= 1800 m) and low-altitude adapted breeds (<1500 m) revealed candidate genes (ACSS2, ALDOC, EPAS1, EGLN1, NUCB2) and pathways that are putatively involved in hypoxia adaptation. Immunohistochemical, real-time PCR and CRISPR/cas9 ACSS2-knockout analyses suggest that the up-regulation of ACSS2 expression in the liver promotes the metabolic adaptation of cells to hypoxia via the hypoxia-inducible factor pathway. High altitude adaptation involved the introgression of alleles from high-altitude adapted yaks into Chinese Bos taurus taurus prior to their formation into recognized breeds and followed by selection. In addition to selection, adaptation to high altitude environments has been facilitated by admixture and introgression with locally adapted cattle populations.

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