文献类型： 外文期刊
作者： Guo, Haifeng 1 ; Gao, Shilei 1 ; Li, Huahui 3 ; Yang, Jiazhen 4 ; Li, Jin 1 ; Gu, Yunsong 1 ; Lou, Qijin 1 ; Su, Runbin 1 ; Ye, Wei 1 ; Zou, Andong 1 ; Wang, Yulong 1 ; Sun, Xingming 1 ; Zhang, Zhanying 1 ; Zhang, Hongliang 1 ; Zeng, Yawen 4 ; Yuan, Pingrong 3 ; Peng, Youliang 2 ; Li, Zichao 1 ; Li, Jinjie 1 ;
作者机构： 1.China Agr Univ, Frontiers Sci Ctr Mol Design Breeding, Beijing Key Lab Crop Genet Improvement, Key Crop Heterosis & Utilizat MOE, Beijing 100193, Peoples R China
2.China Agr Univ, Coll Plant Protect, Minist Agr, Key Lab Pest Monitoring & Green Management, Beijing, Peoples R China
3.Yunnan Acad Agr Sci, Inst Food Crop Res, Kunming, Peoples R China
4.Yunnan Acad Agr Sci, Biotechnol & Genet Resources Inst, Kunming, Peoples R China
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： During cold acclimation in high-latitude and high-altitude regions, japonica rice develops enhanced cold tolerance, but the underlying genetic basis remains unclear. Here, we identify CTB5, a homeodomain-leucine zipper (HD-Zip) transcription factor that confers cold tolerance at the booting stage in japonica rice. Four natural variations in the promoter and coding regions enhance cold response and transcriptional regulatory activity, enabling the favorable CTB5KM allele to improve cold tolerance. CTB5 interacts with OsHox12 and targets gibberellin (GA) metabolism genes to promote GAs accumulation in anthers and facilitate tapetum development under cold stress. Moreover, CTB5 directly regulates PYL9 and improves cold tolerance at the seedling stage by reducing reactive oxygen species (ROS) accumulation. The CTB5KM allele is selected during the cold acclimation of japonica rice to plateau habitats in Yunnan Province. Our findings provide insights into the mechanisms underlying cold adaptation in plateau japonica rice and offer potential targets for breeding cold-tolerant rice varieties.
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