您好，欢迎访问福建省农业科学院 机构知识库！
福建省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

RETINOBLASTOMA-RELATED Genes Specifically Control Inner Floral Organ Morphogenesis and Pollen Development in Rice(1)

文献类型： 外文期刊

作者： Duan, Yuanlin 1 ; Chen, Yaguang 1 ; Li, Wenqiang 1 ; Pan, Meizhen 1 ; Qu, Xiaojie 1 ; Shi, Xiaoqing 1 ; Cai, Zhengzhen 1 ;

作者机构： 1.Fujian Agr & Forestry Univ, Key Lab Genet Breeding & Multiple Utilizat Crops, Minist Educ, Fuzhou 350002, Fujian, Peoples R China

2.Fujian Agr & Forestry Univ, Fujian Prov Key Lab Crop Breeding Design, Fuzhou 350002, Fujian, Peoples R China

3.Fujian Acad Agr Sci, Fujian Prov Key Lab Genet Engn Agr, Fuzhou 350003, Fujian, Peoples R China

4.Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Plant Cell & Chromosome Engn, Beijing 100101, Peoples R China

5.Natl Ctr Plant Gene Res, Beijing 100101, Peoples R China

6.Anyang Acad Agr Sci, Anyang 455000, Peoples R China

期刊名称：PLANT PHYSIOLOGY （ 2020影响因子：8.34； 五年影响因子：8.972 ）

ISSN： 0032-0889

年卷期： 2019 年 181 卷 4 期

页码：

收录情况： SCI

摘要： RETINOBLASTOMA-RELATED (RBR) is an essential gene in plants, but its molecular function outside of its role in cell cycle entry remains poorly understood. We characterized the functions of OsRBR1 and OsRBR2 in plant growth and development in rice using both forward- and reverse-genetics methods. The two genes were coexpressed and performed redundant roles in vegetative organs but exhibited separate functions in flowers. OsRBR1 was highly expressed in the floral meristem and regulated the expression of floral homeotic genes to ensure floral organ formation. Mutation of OsRBR1 caused loss of floral meristem identity, resulting in the replacement of lodicules, stamens, and the pistil with either a panicle-like structure or whorls of lemma-like organs. OsRBR2 was preferentially expressed in stamens and promoted pollen formation. Mutation of OsRBR2 led to deformed anthers without pollen. Similar to the protein interaction between AtRBR and AtMSI1 that is essential for floral development in Arabidopsis, OsMSI1 was identified as an interaction partner of OsRBR1 and OsRBR2. OsMSI1 was ubiquitously expressed and appears to be essential for development in rice (Oryza sativa), as the mutation of OsMSI1 was lethal. These results suggest that OsRBR1 and OsRBR2 function with OsMSI1 in reproductive development in rice. This work characterizes further functions of RBRs and improves current understanding of specific regulatory pathways of floral specification and pollen formation in rice. Members of a cell-cycle-related gene family maintain floral meristem function to ensure floral organ origination and regulate tapetum degradation to promote pollen formation in rice.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：福建省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台