DOI: 10.1111/nph.16236
论文题名: Interplay between REVEILLE1 and RGA-LIKE2 regulates seed dormancy and germination in Arabidopsis
作者: Yang L. ; Jiang Z. ; Liu S. ; Lin R.
刊名: New Phytologist
ISSN: 0028646X
出版年: 2020
卷: 225, 期: 4 语种: 英语
英文关键词: DELLA
; GA signaling
; phyB
; protein stability
; seed germination
Scopus关键词: DNA
; gene expression
; germination
; herb
; metabolism
; protein
; RNA
; seed dormancy
; Arabidopsis
; Arabidopsis thaliana
英文摘要: Environmental light signal and GAs synergistically regulate seed dormancy and germination. The phytochrome B (phyB) photoreceptor regulates expression of the REVEILLE1 (RVE1) transcription factor, which directly inhibits GIBBERELLIN 3-OXIDASE2 transcription, suppressing GA biosynthesis. However, whether phyB-RVE1 coordinates with GA signaling in controlling seed dormancy and germination remains unknown. Here, we demonstrate that RVE1 regulation of seed dormancy and germination requires a DELLA repressor, REPRESSOR OF GA-LIKE2 (RGL2), in Arabidopsis thaliana. RVE1 interacts with both RGL2 and its E3 ubiquitin ligase SLEEPY1 (SLY1) and promotes RGL2 stability by restraining the RGL2–SLY1 interaction. Furthermore, RVE1 and RGL2 synergistically regulate global transcriptome changes; RGL2 enhances the DNA-binding capacity and transcriptional activity of RVE1 in regulating downstream gene expression. Moreover, RGL2 expression is repressed by phyB. Our study reveals a novel regulatory mechanism in which the RVE1–RGL2 module coordinately controls seed dormancy and germination by integrating light perception, GA metabolism and GA signaling pathways. © 2019 The Authors. New Phytologist © 2019 New Phytologist Trust
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159804
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China; University of Chinese Academy of Sciences, Beijing, 100049, China; CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Beijing, 100093, China
Recommended Citation:
Yang L.,Jiang Z.,Liu S.,et al. Interplay between REVEILLE1 and RGA-LIKE2 regulates seed dormancy and germination in Arabidopsis[J]. New Phytologist,2020-01-01,225(4)