OsBRXL4 Regulates Shoot Gravitropism and Rice Tiller Angle through Affecting LAZY1 Nuclear Localization

查看全文 作　　者：Zhen [1,2,4]Li;Yan [1]Liang;Yundong [1]Yuan;Lei [1]Wang;Xiangbing [1]Meng;Guosheng [5]Xiong;Jie [1]Zhou;Yueyue [1,2]Cai;Ningpei [1,2]Han;Lekai [6]Hua;Guifu [1]Liu;Jiayang [1,2]Li;Yonghong [1,2,3]Wang

机构地区：[1]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;[2]University of Chinese Academy of Sciences,Beijing 100039,China;[3]CAS Center for Excellence in Molecular Plant Sciences,Chinese Academy of Sciences,Shanghai 200032,China;[4]Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Beijing 100081,China;[5]Plant Phenomics Research Center,Nanjing Agriculture University,Nanjing 210095,China;[6]Root Biology Center,College of Resources and Environment,Fujian Agriculture and Forestry University,Fuzhou 350002,China

出　　处：《Molecular Plant》索引2019年第12卷第8期,共14页

基　　金：supported by grants from the National Natural Science Foundation of China (91635301;91535204;31601276);the Ministry of Agriculture of China (2016ZX08009-003);the Strategic Priority Research Program 'Molecular Mechanism of Plant Growth and Development' of CAS (XDPB0401). 摘　　要：Rice tiller angle is a key agronomic trait that contributes to ideal plant architecture and grain production.LAZY1 (LA1) was previously shown to control tiller angle via affecting shoot gravitropism,but the underlying molecular mechanism remains largely unknown.In this study,we identified an LA1-interacting protein named Brevis Radix Like 4 (OsBRXL4).We showed that the interaction between OsBRXL4 and LA1 occurs at the plasma membrane and that their interaction determines nuclear localization of LA1.We found that nuclear localization of LA1 is essential for its function,which is different from AtLA1,its Arabidopsis ortho.log.Overexpression of OsBRXL4 leads to a prostrate growth phenotype,whereas OsBRXLs RNAi plants,in which the expression levels of OsBRXLI,OsBRXL4,and OsBRXL5 were decreased,display a compact phenotype.Further genetic analysis also supported that OsBRXL4 controls rice tiller angle by affecting nuclear localization of LA1.Consistently,we demonstrated that OsBRXL4 regulates the shoot gravitropism through affecting polar auxin transport as did LA1.Taken together,our study not only identifies OsBRXL4 as a regulatory component of rice tiller angle but also provides new insights into genetic regulation of rice plant architecture. 关键词：OsBRXL4 LA1 nuclear localization SHOOT GRAVITROPISM TILLER angle RICE

相关文献

参考文献（54）
引证文献（24）
耦合文献（107）

参考文献(54)

引证文献(24)

耦合文献(107)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

OsBRXL4 Regulates Shoot Gravitropism and Rice Tiller Angle through Affecting LAZY1 Nuclear Localization

参考文献(54)

引证文献(24)

耦合文献(107)

用户提示