Maternal genetic diversity, differentiation and phylogeny of three white yak breeds/populations in China

被引：8
作者：
Li, Guangzhen [1 ,2 ]
Luo, Jing [1 ,2 ]
Chen, Shengmei [1 ,2 ]
Hanif, Quratulain [3 ,4 ]
He, Decang [5 ]
Ma, Zhijie [1 ,2 ]
机构：
[1] Qinghai Univ, Qinghai Acad Anim Sci & Vet Med, Xining, Qinghai, Peoples R China
[2] Plateau Livestock Genet Resources Protect & Inno, Xining, Qinghai, Peoples R China
[3] Natl Inst Biotechnol & Genet Engn, Computat Biol Lab, Dept Agr Biotechnol, Faisalabad, Pakistan
[4] Pakistan Inst Engn & Appl Sci, Islamabad, Pakistan
[5] Stn Anim Sci & Vet Med Huzhu Cty Qinghai Prov, Haidong, Qinghai, Peoples R China
来源：
ANIMAL BIOTECHNOLOGY | 2021年 / 34卷 / 03期
基金：
中国国家自然科学基金;
关键词：
White yak; mitochondrial D-loop; genetic diversity; differentiation; phylogenetic relationship; MITOCHONDRIAL-DNA;
D O I：
10.1080/10495398.2021.1973018
中图分类号：
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号：
0905 ;
摘要：
White yak is a unique economic livestock animal on the Qilian Mountains of Qinghai-Tibet Plateau (QTP). Here, 369 mitochondrial D-loop sequences from three Chinese white yak breeds/populations (Tianzhu, Menyuan and Huzhu) were comprehensively analyzed to indicate their maternal genetic diversity, differentiation and phylogenetic relationship. Our results showed that the haplotype diversity (Hd) was found to be highest in Tianzhu white yak (Hd +/- SD = 0.9501 +/- 0.0058), while the lowest was recorded in Huzhu white yak (Hd +/- SD = 0.7178 +/- 0.0474). Totally, the haplotype and nucleotide diversities of white yak were 0.9407 +/- 0.0069 and 0.0187 +/- 0.0094, respectively, indicating an abundant maternal genetic diversity in white yak. Estimates of F-ST (Fixation Index) values showed a high genetic differentiation between Tianzhu and Menyuan populations (F-ST = 0.2928, p < 0.05) as well as that between Tianzhu and Huzhu populations (F-ST = 0.2721, p < 0.05), but a moderate genetic differentiation between Menyuan and Huzhu populations (F-ST = 0.1352, p > 0.05) was observed. Cluster analysis based on F-ST values among populations indicated that the genetic relationship between Menyuan and Huzhu white yak was closer, but they had a far genetic relationship with Tianzhu white yak. Maternal phylogenetic analysis revealed that white yak represented two maternal lineages (I and II), suggesting two maternal origins. In addition, it is notable that taurine mtDNA haplotypes were detected in Tianzhu and Huzhu white yak populations, indicating taurine genetic introgression to some extent. Our study would provide useful information for the conservation and utilization of white yak.
引用
收藏
页码：728 / 733
页数：6
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