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OsWRKY78 regulates panicle exsertion via gibberellin signaling pathway in rice

Journal of Integrative Plant Biology 2024年第4期66卷 771-786页

作者： Enyang Mei Mingliang He Min Xu Jiaqi Tang Jiali Liu Yingxiang Liu Zhipeng Hong Xiufeng Li Zhenyu Wang Qingjie Guan Xiaojie Tian Qingyun Bu State Key Laboratory of Black Soils Conservation and Utilization Key Laboratory of Soybean Molecular Design BreedingNortheast Institute of Geography and AgroecologyChinese Academy of SciencesHarbin 150081China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Saline-alkali Vegetation Ecology Restoration Northeast Forestry UniversityMinistry of EducationHarbin 150040China College of Life Science Northeast Forestry UniversityHarbin 150040China

panicle exsertion is one of the crucial agronomic traits in rice(Oryza sativa).Shortening of panicle exsertion often leads to panicle enclosure and severely reduces seed ***(GA)plays important roles in regulating panicle ***,the underlying mechanism and the relative regulatory network remain ***,we characterized the oswrky78 mutant showing severe panicle enclosure,and found that the defect of oswrky78 is caused by decreased bioactive GA *** analysis demonstrates that OsWRKY78 can directly activate GA biosynthesis and indirectly suppress GA ***,we found OsWRKY78 can interact with and be phosphorylated by mitogen-activated protein kinase(MAPK)kinase OsMAPK6,and this phosphorylation can enhance OsWRKY78 stability and is necessary for its biological *** together,these results not only reveal the critical function of OsWRKY78,but also reveal its mechanism via mediating crosstalk between MAPK and the GA signaling pathway in regulating panicle exsertion.

关键词： gibberellin MAPK cascades OsWRKY78 panicle exsertion rice

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Fine-Tuning of Euil： Breaking the Bottleneck in Hybrid Rice Seed Production

引用

Molecular Plant 2018年第5期11卷 643-644页

作者： Shaopei Gao Chengcai Chu State Key Laboratory of Plant Genomics and National Center for Plant Gene Research (Beijing) Institute of Genetics and Developmental Biology Chinese Academy of Sciences Beijing 100101 China

Gibberellins （GAs） are essential phytohormones regulating many aspects of plant growth and development. Manipulation of GA status either by genetic alteration or by exogenous application of GA or GA biosynthesis inhibitors are common strategies used to optimize plant growth and crop yields. Rice （Oryza sativa） is a major source of calories and mineral nutrients, feeding more than half of the human population. With the challenges of feeding an increasing population and decreasing availability of arable land, improving productivity and yields of rice crop has always been an ultimate goal for breeders.

关键词： CYTOCHROME-P450 MONOOXYGENASE panicle exsertion ELEMENT TARGET GENE

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