Rice THIN CULM 4 (TC4) modulates culm strength by regulating morphology, structure, and development
文献类型： 外文期刊
作者： Zhou, Ran 1 ; Huang, Chenbo 1 ; Wen, Xiaoxia 1 ; Sun, Zhihao 1 ; Dong, Wei 1 ; Chen, Yuyu 1 ; Huang, Nuan 1 ; Zhang, Han 1 ; Su, Haihan 1 ; Li, Yanhui 1 ; Peng, Zequn 1 ; Zhang, Yingxin 1 ; Cao, Liyong 1 ; Cheng, Shihua 1 ; Zhan, Xiaodeng 1 ; Sun, Lianping 1 ; Chen, Daibo 1 ;
作者机构： 1.China Natl Rice Res Inst, Chinese Natl Ctr Rice Improvement, Key Lab Zhejiang Super Rice Res, Hangzhou 311402, Zhejiang, Peoples R China
2.China Natl Rice Res Inst, Stat Key Lab Rice Biol & Breeding, Hangzhou 311402, Zhejiang, Peoples R China
3.CAAS, Natl Nanfan Res Inst, Sanya 572024, Hainan, Peoples R China
4.Yunnan Acad Agr Sci, Inst Food Crops, Kunming 650051, Yunnan, Peoples R China
5.Moutai Inst, Dept Resources & Environm, Renhuai 564507, Peoples R China
关键词： Rice; Culm development; TC4; Culm mechanical strength; Lodging resistance
期刊名称：PLANT SCIENCE （ 影响因子：4.1； 五年影响因子：5.1 ）
ISSN： 0168-9452
年卷期： 2025 年 352 卷
页码：
收录情况： SCI
摘要： Culm strength is crucial for rice growth, nutrition transportation, and structural resilience, which are essential for lodging resistance and stable production. In this study, we identified a rice thin culm mutant tc4, characterized by thinner culms and thicker cavity walls, resulting in weakened culm mechanical strength. Using map-based cloning, the candidate gene was isolated, and complementation and CRISPR/Cas9 experiments confirmed that a single nucleotide substitution in TC4 is responsible for the thin and brittle culm phenotype. TC4, a homolog of the FLORICAULA/LEAFY gene, localizes to the nucleus and cytoplasm. Further research revealed that TC4 regulates culm development by influencing plant hormones and sugar transport. This research not only advances our understanding of rice culm regulation, but also provides valuable insights for breeding lodging-resistant rice varieties.
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