The yak genome and adaptation to life at high altitude

Qiang Qiu, Guojie Zhang, Tao Ma, Wubin Qian, Junyi Wang, Zhiqiang Ye, Changchang Cao, Quanjun Hu, Jaebum Kim, Denis M Larkin, Loretta Auvil, Boris Capitanu, Jian Ma, Harris A. Lewin, Xiaoju Qian, Yongshan Lang, Ran Zhou, Lizhong Wang, Kun Wang, Jinquan XiaShengguang Liao, Shengkai Pan, Xu Lu, Haolong Hou, Yan Wang, Xuetao Zang, Ye Yin, Hui Ma, Jian Zhang, Zhaofeng Wang, Yingmei Zhang, Dawei Zhang, Takahiro Yonezawa, Masami Hasegawa, Yang Zhong, Wenbin Liu, Yan Zhang, Zhiyong Huang, Shengxiang Zhang, Ruijun Long, Huanming Yang, Jian Wang, Johannes A Lenstra, David N Cooper, Yi Wu, Jun Wang, Peng Shi, Jian Wang, Jianquan Liu

Research output: Contribution to journalArticlepeer-review

636 Citations (SciVal)

Abstract

Domestic yaks (Bos grunniens) provide meat and other necessities for Tibetans living at high altitude on the Qinghai-Tibetan Plateau and in adjacent regions. Comparison between yak and the closely related low-altitude cattle (Bos taurus) is informative in studying animal adaptation to high altitude. Here, we present the draft genome sequence of a female domestic yak generated using Illumina-based technology at 65-fold coverage. Genomic comparisons between yak and cattle identify an expansion in yak of gene families related to sensory perception and energy metabolism, as well as an enrichment of protein domains involved in sensing the extracellular environment and hypoxic stress. Positively selected and rapidly evolving genes in the yak lineage are also found to be significantly enriched in functional categories and pathways related to hypoxia and nutrition metabolism. These findings may have important implications for understanding adaptation to high altitude in other animal species and for hypoxia-related diseases in humans.
Original languageEnglish
Pages (from-to)946-9
Number of pages4
JournalNature Genetics
Volume44
Issue number8
DOIs
Publication statusPublished - 2012

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