| Literature DB >> 25583503 |
Xingquan Zeng1, Hai Long2, Zhuo Wang3, Shancen Zhao3, Yawei Tang1, Zhiyong Huang3, Yulin Wang1, Qijun Xu1, Likai Mao3, Guangbing Deng2, Xiaoming Yao3, Xiangfeng Li4, Lijun Bai3, Hongjun Yuan1, Zhifen Pan2, Renjian Liu1, Xin Chen2, QiMei WangMu1, Ming Chen3, Lili Yu3, Junjun Liang2, DaWa DunZhu1, Yuan Zheng3, Shuiyang Yu2, ZhaXi LuoBu1, Xuanmin Guang3, Jiang Li3, Cao Deng3, Wushu Hu3, Chunhai Chen3, XiongNu TaBa1, Liyun Gao1, Xiaodan Lv3, Yuval Ben Abu5, Xiaodong Fang3, Eviatar Nevo6, Maoqun Yu7, Jun Wang8, Nyima Tashi9.
Abstract
The Tibetan hulless barley (Hordeum vulgare L. var. nudum), also called "Qingke" in Chinese and "Ne" in Tibetan, is the staple food for Tibetans and an important livestock feed in the Tibetan Plateau. The diploid nature and adaptation to diverse environments of the highland give it unique resources for genetic research and crop improvement. Here we produced a 3.89-Gb draft assembly of Tibetan hulless barley with 36,151 predicted protein-coding genes. Comparative analyses revealed the divergence times and synteny between barley and other representative Poaceae genomes. The expansion of the gene family related to stress responses was found in Tibetan hulless barley. Resequencing of 10 barley accessions uncovered high levels of genetic variation in Tibetan wild barley and genetic divergence between Tibetan and non-Tibetan barley genomes. Selective sweep analyses demonstrate adaptive correlations of genes under selection with extensive environmental variables. Our results not only construct a genomic framework for crop improvement but also provide evolutionary insights of highland adaptation of Tibetan hulless barley.Entities:
Keywords: Tibetan hulless barley; Triticeae evolution; adaptation; genetic diversity; selective sweep
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Year: 2015 PMID： 25583503 PMCID： PMC4313863 DOI： 10.1073/pnas.1423628112
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205