文献类型： 外文期刊

作者： Wu, Yan-Ping ² ; Guan, Wei-Jun ¹ ; Zhao, Qian-Jun ¹ ; He, Xiao-Hong ¹ ; Pu, Ya-Bin ¹ ; Huo, Jun-Hong ² ; Xie, Jin-Fang ² ;

作者机构： 1.Chinese Acad Agr Sci, Inst Anim Sci, Div Anim Resources & Conservat, Beijing 100094, Peoples R China

2.Jiangxi Acad Agr Sci, Inst Anim Sci, Nanchang, Peoples R China

3.Int Livestock Res Inst, Nairobi, Kenya

4.Sun Yat Sen Univ, Sch Publ Hlth, Dept Med Stat & Epidemiol, Guangzhou 510275, Guangdong, Peoples R China

关键词： analysis of molecular variance;mitochondrial lineage;phylogeny;phylogeography;population expansion

期刊名称：ANIMAL SCIENCE JOURNAL （ 影响因子：1.749； 五年影响因子：1.909 ）

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收录情况： SCI

摘要： As the fast pace of genomic research continues to identify mitochondrial lineages in animals, it has become apparent that many independent studies are needed to support a robust phylogenetic inference. The aim of this study was thus to further characterize the maternal lineage, proposed to originate in southwestern region of China, using a wider survey of diverse goat breeds in China. To this end, we sequenced the mitochondrial hypervariable region 1 (HVR1) of the mtDNA control region in 145 goats of 12 Chinese breeds. Phylogenetic analysis revealed that Chinese goats were classified into four distinct lineages (A, B, C and D) as previously reported. A Mantel test and the analysis of Analysis of Molecular Variance (ANOVA) indicated that there was not an obvious geographic structure among Chinese goat breeds. Population expansion analysis based on mismatch distribution and Fu's Fs statistic indicate that two expansion events in Chinese goats occurred respectively at about 11 and 29 mutational time units ago, revealing two star-like subclades in lineage B corresponding to two population expansion events. Moreover, lineage B sequences were presented only in the breeds of southwestern or surrounding regions of China. Multiple lines of evidence from this study and previous studies indicate that for Chinese goats mtDNA lineage B originated from the southwestern region of China.