您好，欢迎访问北京市农林科学院 机构知识库！
北京市农林科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Pseudouridylation of chloroplast ribosomal RNA contributes to low temperature acclimation in rice

文献类型： 外文期刊

作者： Wang, Zhen 1 ; Sun, Jing 1 ; Zu, Xiaofeng 1 ; Gong, Jie 1 ; Deng, Hongjing 1 ; Hang, Runlai 1 ; Zhang, Xiaofan 1 ; Liu, Chunyan 1 ; Deng, Xian 1 ; Luo, Lilan 1 ; Wei, Xiangjin 5 ; Song, Xianwei 1 ; Cao, Xiaofeng 1 ;

作者机构： 1.Chinese Acad Sci, State Key Lab Plant Genom, Beijing 100101, Peoples R China

2.Chinese Acad Sci, Natl Ctr Plant Gene Res, Inst Genet & Dev Biol, Beijing 100101, Peoples R China

3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

4.Beijing Acad Agr & Forestry Sci, Inst Hybrid Wheat, Municipal Key Lab Mol Genet Hybrid Wheat, Beijing 100097, Peoples R China

5.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 311401, Peoples R China

关键词： chloroplast; pseudouridine synthase; reactive oxygen species (ROS); ribosome; rice; temperature

期刊名称：NEW PHYTOLOGIST （ 影响因子：10.323； 五年影响因子：10.768 ）

ISSN： 0028-646X

年卷期： 2022 年 236 卷 5 期

页码：

收录情况： SCI

摘要： Ribosomal RNAs (rRNAs) undergo many modifications during transcription and maturation; homeostasis of rRNA modifications is essential for chloroplast biogenesis in plants. The chloroplast acts as a hub to sense environmental signals, such as cold temperature. However, how RNA modifications contribute to low temperature responses remains unknown. Here we reveal that pseudouridine (psi) modification of rice chloroplast rRNAs mediated by the pseudouridine synthase (OsPUS1) contributes to cold tolerance at seedling stage. Loss-function of OsPUS1 leads to abnormal chloroplast development and albino seedling phenotype at low temperature. We find that OsPUS1 is accumulated upon cold and binds to chloroplast precursor rRNAs (pre-rRNAs) to catalyse the pseudouridylation on rRNA. These modifications on chloroplast rRNAs could be required for their processing, as the reduction of mature chloroplast rRNAs and accumulation of pre-rRNAs are observed in ospus1-1 at low temperature. Therefore, the ribosome activity and translation in chloroplasts is disturbed in ospus1-1. Furthermore, transcriptome and translatome analysis reveals that OsPUS1 balances growth and stress-responsive state, preventing excess reactive oxygen species accumulation. Taken together, our findings unveil a crucial function of psi in chloroplast ribosome biogenesis and cold tolerance in rice, with potential applications in crop improvement.

  • 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：北京市农林科学院

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