文献类型： 外文期刊
作者： Wu, Hao 1 ; He, Qi 1 ; He, Bing 1 ; He, Shuyi 1 ; Zeng, Longjun 4 ; Yang, Longbo 1 ; Zhang, Hong 1 ; Wei, Zhaoran 1 ; Hu, Xingming 5 ; Hu, Jiang 6 ; Zhang, Yong 7 ; Shang, Lianguang 1 ; Wang, Suikang 1 ; Cui, Peng 1 ; Xiong, Guosheng 8 ; Qian, Qian 1 ; Wang, Quan 1 ;
作者机构： 1.Chinese Acad Agr Sci, Guangdong Lab Lingnan Modern Agr, Genome Anal Lab, Shenzhen Branch,Agr Genom Inst Shenzhen,Minist Agr, Shenzhen 518120, Peoples R China
2.Henan Univ, Sch Life Sci, State Key Lab Crop Stress Adaptat & Improvement, Kaifeng 475001, Peoples R China
3.Henan Univ, Shenzhen Res Inst, Shenzhen 518000, Peoples R China
4.Yichun Acad Sci, Yichun 336000, Peoples R China
5.Anhui Agr Univ, Coll Agron, Hefei 230026, Peoples R China
6.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 311401, Peoples R China
7.Univ Elect Sci & Technol China, Ctr Informat Biol, Sch Life Sci & Technol, Dept Biotechnol, Chengdu 611731, Peoples R China
8.Nanjing Agr Univ, Acad Adv Interdisciplinary Studies, Plant Phen Res Ctr, Nanjing 210095, Peoples R China
9.Nankai Univ, Coll Agr Sci, Tianjin 300071, Peoples R China
期刊名称：PLANT CELL （ 影响因子：11.6； 五年影响因子：12.9 ）
ISSN： 1040-4651
年卷期： 2023 年
页码：
收录情况： SCI
摘要： The elimination of seed shattering was a key step in rice (Oryza sativa) domestication. In this paper, we show that increasing the gibberellic acid (GA) content or response in the abscission region enhanced seed shattering in rice. We demonstrate that SLENDER RICE1 (SLR1), the key repressor of GA signaling, could physically interact with the rice seed shattering-related transcription factors quantitative trait locus of seed shattering on chromosome 1 (qSH1), O. sativa HOMEOBOX 15 (OSH15), and SUPERNUMERARY BRACT (SNB). Importantly, these physical interactions interfered with the direct binding of these three regulators to the lignin biosynthesis gene 4-COUMARATE: COENZYME A LIGASE 3 (4CL3), thereby derepressing its expression. Derepression of 4CL3 led to increased lignin deposition in the abscission region, causing reduced rice seed shattering. Importantly, we also show that modulating GA content could alter the degree of seed shattering to increase harvest efficiency. Our results reveal that the "Green Revolution" phytohormone GA is important for regulating rice seed shattering, and we provide an applicable breeding strategy for high-efficiency rice harvesting. DELLA protein SLR1 interacts with 3 shattering transcription factors (qSH1, OSH15, and SNB) to alter lignin biosynthesis and regulate seed shattering in rice (Oryza sativa).
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