中国草食动物科学2025，Vol.45Issue(6)：100-104,5.DOI:10.3969/j.issn.2095-3887.2024.00.128
甘南牦牛的母系遗传多样性再评估
Reappraisal of Maternal Genetic Diversity of Gannan Yak Breed
摘要
Abstract
To further explore the maternal genetic diversity,population genetic structure,and genetic background of Gannan yaks at the molecular level,the present study determined the mtDNA D-loop region sequences of 34 Gannan yaks.Based on this,23 published Gannan yak mtDNA D-loop region sequences were downloaded from GenBank,and a total of 57 Gannan yak mtDNA D-loop region sequences were comprehensively analyzed using bioinformatics software such as BioEdit v7.2.5,DnaSP 5.10.01,and Arlequin 3.11.The results showed that a total of 4 single polymorphic sites and 33 parsimonious informative sites were detected in the comparative analysis of 57 Gannan yak mtDNA D-loop se-quences.A total of 19 haplotypes were identified based on nucleotide variations among sequences.Genetic diversity analysis revealed that compared to wild yaks and 17 other domestic yak breeds in China,Gannan yaks have higher haplo-type diversity(0.922±0.017)and nucleotide diversity(0.016±0.008),indicating a higher level of maternal genetic diver-sity.In phylogenetic analysis,19 haplotypes were found to be distributed in two maternal genetic lineages(Mt-Ⅰand Mt-Ⅱ),with the Mt-Ⅰconsisting of three haplogroups(A,B,and E)accounting for 78.95%;the Mt-Ⅱlineage includes two haplogroups(C and D),accounting for 21.05%,suggesting that the Gannan yak has two maternal origins.关键词
甘南牦牛/线粒体基因组/遗传多样性/系统发育Key words
Gannan yak/mitogenome/genetic diversity/phylogeny分类
畜牧业引用本文复制引用
刘瑞林,盛欣,吴志鹏,李瑞哲,陈生梅,马志杰..甘南牦牛的母系遗传多样性再评估[J].中国草食动物科学,2025,45(6):100-104,5.基金项目
青海省"昆仑英才·高端创新创业人才"计划(领军人才)项目 （领军人才）
全国畜禽遗传资源普查项目 （）
