Rice domestication-associated transcription factor PROSTRATE GROWTH 1 controls plant and panicle architecture by regulating the expression of LAZY 1 and OsGIGANTEA,respectively  

作　　者：Jun Wang Jing Huang Jinlin Bao Xizhi Li Liang Zhu Jian Jin 

机构地区：[1]State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources,College of Life Science and Technology,Guangxi University,Nanning 530004,China [2]National Key Laboratory of Plant Molecular Genetics,CAS Center for Excellence in Molecular Plant Sciences,Institute of Plant Physiology and Ecology,Chinese Academy of Sciences,Shanghai 200031,China

出　　处：《Molecular Plant》2023年第9期1413-1426,共14页分子植物（英文版）

基　　金：the National Natural Science Foundation of China(32060174 and 32160079);the Natural Science Foundation of Guangxi Province(2020GXNSFAA297236 and 2020GXNSFAA297211);Fellowship of the China Postdoctoral Science Foundation(2021M693175);the State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources(SKLCUSAa202007);the Innovation Project of Guangxi Graduate Education(YCBZ2023037).

摘　　要：Plant architecture and panicle architecture are two critical agronomic traits that greatly affect the yield of rice(Oryza sativa).PROSTRATE GROWTH 1(PROG1)encodes a key C2H2-type zinc-finger transcription factor and has pleiotropic effects on the regulation of both plant and panicle architecture,thereby influencing the grain yield.However,the molecular mechanisms through which PROG1 controls plant and panicle architecture remain unclear.In this study,we showed that PROG1 directly binds the LAZY 1(LA1)promoter and acts as a repressor to inhibit LA1 expression.Conversely,LA1 acts as a repressor of PROG1 by directly binding to the PROG1 promoter.These two genes play antagonistic roles in shaping plant architecture by regulating both tiller angle and tiller number.Interestingly,our data showed that PROG1 controls panicle architecture through direct binding to the intragenic regulatory regions of OsGIGANTEA(OsGI)and subsequent activation of its expression.Collectively,we have identified two crucial targets of PROG1,LA1 and OsGI,shedding light on the molecular mechanisms underlying plant and panicle architecture control by PROG1.Our study provides valuable insights into the regulation of key domestication-related traits in rice and identifies potential targets for future high-yield rice breeding.

关 键 词：PROG1 LA1 OSGI plant architecture panicle architecture 

分 类 号：S51[农业科学—作物学]