Origin of mitochondrial DNA diversity of domestic yaks |
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| Authors: | Songchang Guo Peter Savolainen Jianping Su Qian Zhang Delin Qi Jie Zhou Yang Zhong Xinquan Zhao and Jianquan Liu |
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| Institution: | (1) Key Laboratory of Qinghai-Tibetan Plateau Ecological Adaptation, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining, 810001, Qinghai, China;(2) Department of Biotechnology, Royal Institute of Technology (KTH), 10691 Stockholm, Sweden;(3) Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China;(4) Key Laboratory of Arid and Grassland Ecology, College of Life Science, Lanzhou University, Lanzhou, 730000, China;(5) Key Laboratory of Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai, 200433, China |
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| Abstract: | Background The domestication of plants and animals was extremely important anthropologically. Previous studies have revealed a general
tendency for populations of livestock species to include deeply divergent maternal lineages, indicating that they were domesticated
in multiple, independent events from genetically discrete wild populations. However, in water buffalo, there are suggestions
that a similar deep maternal bifurcation may have originated from a single population. These hypotheses have rarely been rigorously
tested because of a lack of sufficient wild samples. To investigate the origin of the domestic yak (Poephagus grunnies), we analyzed 637 bp of maternal inherited mtDNA from 13 wild yaks (including eight wild yaks from a small population in
west Qinghai) and 250 domesticated yaks from major herding regions. |
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