您好，欢迎访问上海市农业科学院 机构知识库！
上海市农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

The circadian-controlled PIF8-BBX28 module regulates petal senescence in rose flowers by governing mitochondrial ROS homeostasis at night

文献类型： 外文期刊

作者： Zhang, Yi 1 ; Wu, Zhicheng 1 ; Feng, Ming 1 ; Chen, Jiwei 1 ; Qin, Meizhu 1 ; Wang, Wenran 1 ; Bao, Ying 2 ; Xu, Qian 1 ; Ye 1 ;

作者机构： 1.China Agr Univ, Coll Hort, Dept Ornamental Hort, State Key Lab Agrobiotechnol,Beijing Key Lab Dev, Beijing 100193, Peoples R China

2.Tangshan Normal Univ, Fac Life Sci, Tangshan 063000, Hebei, Peoples R China

3.Univ Calif Davis, ARS, USDA, Crop Pathol & Genet Res Unit, Davis, CA 95616 USA

4.Univ Calif Davis, Dept Plant Sci, Davis, CA 95616 USA

5.Cornell Univ, Coll Agr & Life Sci, Sch Integrat Plant Sci, Plant Biol Sect, Ithaca, NY 14853 USA

6.Zhongkai Univ Agr & Engn, Coll Agr & Biol, Guangzhou 510225, Peoples R China

7.Shanghai Acad Agr Sci, Shanghai 201403, Peoples R China

期刊名称：PLANT CELL （ 影响因子：11.277； 五年影响因子：12.061 ）

ISSN： 1040-4651

年卷期： 2021 年 33 卷 8 期

页码：

收录情况： SCI

摘要： Reactive oxygen species (ROS) are unstable reactive molecules that are toxic to cells. Regulation of ROS homeostasis is crucial to protect cells from dysfunction, senescence, and death. In plant leaves, ROS are mainly generated from chloroplasts and are tightly temporally restricted by the circadian clock. However, little is known about how ROS homeostasis is regulated in nonphotosynthetic organs, such as petals. Here, we showed that hydrogen peroxide (H2O2) levels exhibit typical circadian rhythmicity in rose (Rosa hybrida) petals, consistent with the measured respiratory rate. RNA-seq and functional screening identified a B-box gene, RhBBX28, whose expression was associated with H2O2 rhythms. Silencing RhBBX28 accelerated flower senescence and promoted H2O2 accumulation at night in petals, while overexpression of RhBBX28 had the opposite effects. RhBBX28 influenced the expression of various genes related to respiratory metabolism, including the TCA cycle and glycolysis, and directly repressed the expression of SUCCINATE DEHYDROGENASE 1, which plays a central role in mitochondrial ROS (mtROS) homeostasis. We also found that PHYTOCHROME-INTERACTING FACTOR8 (RhPIF8) could activate RhBBX28 expression to control H2O2 levels in petals and thus flower senescence. Our results indicate that the circadian-controlled RhPIF8-RhBBX28 module is a critical player that controls flower senescence by governing mtROS homeostasis in rose.

  • 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：上海市农业科学院

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