Natural variation in CTB4a enhances rice adaptation to cold habitats

文献类型： 外文期刊

第一作者： Li, Jinjie

作者： Li, Jinjie;Pan, Yinghua;Li, Jilong;Zhou, Lei;Shi, Hongli;Guo, Haifeng;Zheng, Weiwei;Yu, Jianping;Sun, Xingming;Li, Gangling;Zhang, Hongliang;Li, Zichao;Pan, Yinghua;Zhou, Lei;Zeng, Yawen;Yang, Shuming;Shen, Shiquan;Dai, Luyuan;Ding, Yanglin;Ma, Liang;Yang, Shuhua;Guo, Yan

作者机构：

期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.919； 五年影响因子：15.805 ）

ISSN： 2041-1723

年卷期： 2017 年 8 卷

页码：

收录情况： SCI

摘要： Low temperature is a major factor limiting rice productivity and geographical distribution. Improved cold tolerance and expanded cultivation to high- altitude or high- latitude regions would help meet growing rice demand. Here we explored a QTL for cold tolerance and cloned the gene, CTB4a (cold tolerance at booting stage), encoding a conserved leucine- rich repeat receptor-like kinase. We show that different CTB4a alleles confer distinct levels of cold tolerance and selection for variation in the CTB4a promoter region has occurred on the basis of environmental temperature. The newly generated cold- tolerant haplotype Tej-Hap-KMXBG was retained by artificial selection during temperate japonica evolution in cold habitats for low- temperature acclimation. Moreover, CTB4a interacts with AtpB, a beta subunit of ATP synthase. Upregulation of CTB4a correlates with increased ATP synthase activity, ATP content, enhanced seed setting and improved yield under cold stress conditions. These findings suggest strategies to improve cold tolerance in crop plants.

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