Interplay between REVEILLE1 and RGA-LIKE2 regulates seed dormancy and germination in Arabidopsis

Interplay between REVEILLE1 and RGA-LIKE2 regulates seed dormancy and germination in Arabidopsis

© 2019 The Authors. New Phytologist © 2019 New Phytologist Trust.

Détails bibliographiques
Publié dans:The New phytologist. - 1984. - 225(2020), 4 vom: 15. Feb., Seite 1593-1605
Auteur principal: Yang, Liwen (Auteur)
Autres auteurs: Jiang, Zhimin, Liu, Shuangrong, Lin, Rongcheng
Format: Article en ligne
Langue:English
Publié: 2020
Accès à la collection:The New phytologist
Sujets:Journal Article Research Support, Non-U.S. Gov't DELLA GA signaling phyB protein stability seed germination Arabidopsis Proteins PHYB protein, Arabidopsis REVEILLE1 protein, Arabidopsis plus... RGL2 protein, Arabidopsis RNA, Plant Transcription Factors Phytochrome B 136250-22-1
Description
Résumé:© 2019 The Authors. New Phytologist © 2019 New Phytologist Trust.
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
Description:Date Completed 08.04.2021
Date Revised 08.04.2021
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.16236