Natural variation of indels in the CTB3 promoter confers cold tolerance in japonica rice

文献类型： 外文期刊

第一作者： Li, Jin

作者： Li, Jin;Guo, Haifeng;Lou, Qijin;Xu, Penghui;Gu, Yunsong;Gao, Shilei;Xu, Bingxia;Han, Shichen;Su, Runbin;Zou, Andong;Ye, Wei;Zhang, Meng;Li, Yingxiu;Sun, Xingming;Zhang, Zhanying;Zhang, Hongliang;Li, Zichao;Li, Jinjie;Zeng, Yawen;Guo, Zhenhua;Ma, Wendong;Chen, Chao

作者机构：

期刊名称：NATURE COMMUNICATIONS （ 影响因子：15.7； 五年影响因子：17.2 ）

ISSN：

年卷期： 2025 年 16 卷 1 期

页码：

收录情况： SCI

摘要： Improvement of cold tolerance at the booting stage (CTB) in rice is a key strategy for cultivation in high-altitude and high-latitude regions. Here, we identify CTB3 gene, encoding a calmodulin-binding transcriptional activator that positively regulates cold tolerance at the booting stage in japonica rice. Two indels (57-bp and 284-bp) in the CTB3 promoter confer a differential transcriptional response to cold between the japonica and indica subspecies. OsTCP19 suppresses CTB3 expression by binding to these indels, negatively regulating cold tolerance. CTB3 activates the expression of TREHALOSE-6-PHOSPHATE PHOSPHATASE1 (OsTPP1), reducing trehalose 6-phosphate (Tre6P) levels, which increases sugar accumulation in panicles and improves cold tolerance. Additionally, favorable alleles of OsTCP19 and CTB3 are selected in japonica rice for cold adaptation. These findings highlight the important role of CTB3 in cold adaptation and its potential for improving cold tolerance in rice breeding.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序