OsGRF6-OsYUCCA1/OsWRKY82 Signaling Cascade Upgrade Grain Yield and Bacterial Blight Resistance in Rice
文献类型： 外文期刊
作者： Yuan, Huanran 1 ; Cheng, Mingxing 1 ; Fan, Fengfeng 1 ; Zheng, Xingfei 3 ; Wang, Ruihua 1 ; Si, Fengfeng 1 ; Luo, Xiong 1 ; Li, Nengwu 1 ; Li, Shaoqing 1 ;
作者机构： 1.Wuhan Univ, Key Lab Res & Utilizat Heterosis Indica Rice, Coll Life Sci, State Key Lab Hybrid Rice,Minist Agr,Minist Educ,E, Wuhan 430072, Peoples R China
2.Hubei Univ Chinese Med, Hubei Shizhen Lab, Wuhan 430065, Peoples R China
3.Hubei Acad Agr Sci, Food Crop Inst, Hubei Key Lab Food Crop Germplasm & Genet Improvem, Wuhan 430064, Hubei, Peoples R China
关键词： Bacterial blight resistance; grain yield; OsGRF6; OsYUCCA1; OsWRKY82
期刊名称：ADVANCED SCIENCE （ 影响因子：14.1； 五年影响因子：15.6 ）
ISSN：
年卷期： 2024 年 11 卷 46 期
页码：
收录情况： SCI
摘要： As a major crop in the world, the sustainable development of rice is often severely restricted by bacterial blight. Breeding crops with resistance is an efficient way to control bacterial blight. However, enhancing resistance often incurs a fitness penalty, making it challenging to simultaneously increase bacterial blight resistance and yield potential. In this study, it is found that OsGRF6, besides being a high-yield gene, can significantly improve rice bacterial blight resistance. Compared with wild-type, the lesion lengths of transgenic material overexpressing OsGRF6 are significantly reduced after inoculation with Xanthomonas oryzae pv. oryzae (Xoo). Furthermore, OsGRF6 can directly bind to the promoters of OsYUCCA1 and OsWRKY82, upregulating their transcription and thereby increasing rice bacterial blight resistance and yield. Haplotypic analysis based on the promoter and genome sequence combined with evolutionary analysis revealed that OsGRF6 is mainly comprised by the OsGRF6XI and OsGRF6GJ subtypes. The superior haplotype OsGRF6Hap4 increased its transcriptional activity and contributed to bacterial blight resistance and rice yield. Together, this study provides theoretical support for further revealing the synergistic regulatory mechanism and genetic improvement of rice high yield and bacterial blight resistance, offering a new strategy for developing disease-resistant cultivars.
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