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Origin and adaptation to high altitude of Tibetan semi-wild wheat

Agriculture

Origin and adaptation to high altitude of Tibetan semi-wild wheat

W. Guo, M. Xin, et al.

Discover the intriguing adaptation mechanisms of Tibetan wheat, uniquely evolved to thrive in high-altitude environments. This research, conducted by Weilong Guo and colleagues, reveals the draft genome of Tibetan semi-wild wheat, highlighting significant genetic adaptations that shape its resilience and de-domestication process.

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Playback language: English
Abstract
Tibetan wheat, grown under high-altitude environmental constraints, shows an unknown adaptation mechanism. This study presents a draft genome sequence of Tibetan semi-wild wheat (Zang1817) and re-sequences 245 wheat accessions. High-altitude environments reshape wheat genomes, with Tibetan wheat accumulating high-altitude adapted haplotypes. Tibetan semi-wild wheat is identified as a de-domesticated form of Tibetan landrace, with two loci (a 0.8-Mb deletion including *Brt1/2* homologs and a region with *TaQ-5A*) responsible for rachis brittleness during de-domestication.
Publisher
Nature Communications
Published On
Oct 08, 2020
Authors
Weilong Guo, Mingming Xin, Zihao Wang, Yingyin Yao, Zhaorong Hu, Wanjun Song, Kuohai Yu, Yongming Chen, Xiaobo Wang, Panfeng Guan, Rudi Appels, Huiru Peng, Zhongfu Ni, Qixin Sun
Tags
Tibetan wheat
high-altitude adaptation
genome sequencing
rachis brittleness
de-domestication

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