Maternal genetic diversity of complete mitogenome of Tianzhu white yak
To reveal the maternal genetic diversity,population genetic structure and maternal genetic background of Tianzhu white yak at genomic level,genome re-sequencing technology is adopted to determine the complete genome sequence of 42 Tianzhu white yaks to obtain their complete mitoge-nome sequences.Besides,one published complete mitogenome sequence of Tianzhu white yak is downloaded from GenBank.A comprehensive analysis is conducted on 43 complete mitogenome se-quences of Tianzhu white yaks.The results show that a total of 971 mutation sites are identified in 43 complete mitogenome sequences,including 25 single polymorphism sites and 946 parsimony informa-tive sites.A total of 20 haplotypes are identified through nucleotide variations between sequences,with haplotype diversity and nucleotide diversity of 0.907 and 0.013 respectively,indicating that Tianzhu white yak has relatively rich maternal genetic diversity.The maternal genetic diversity of Tianzhu white yak is relatively lower than that of wild yak,Huanhu,Xueduo,Yushu,Qinghai plateau and Pamir yaks.Taking Bison bison as a reference outgroup for phylogenetic analysis,it is found that 20 haplotypes are distributed in 5 haplotype groups(A,B,C,E and G),belonging to 3 maternal lineages(Mt-Ⅰ,Mt-Ⅱ and Mt-Ⅲ),with Mt-Ⅰ dominated.Therefore,it is speculated that there are 3 maternal origins.
Tianzhu white yakmitogenomegenetic diversitypopulation structurephylogeny
NETL
NSTL
万方数据
