DELLA Proteins Physically Interact with CONSTANS to Regulate Flowering under Long Days in Arabidopsis

FEBS Letters
Feng XuHong-Quan Yang

Abstract

Proper timing of flowering is essential for reproduction of plants. Although it is well known that both light and gibberellin (GA) signaling play critical roles in promoting flowering in Arabidopsis thaliana, whether and how they are integrated to regulate flowering remain largely unknown. Here we show through biochemical studies that DELLA proteins physically interact with CONSTANS (CO). Furthermore, the interaction of CO with NF-YB2 is inhibited by the DELLA protein, RGA. Our findings suggest that regulation of flowering by GA signaling in leaves under long days is mediated, at least in part, through repression of DELLA proteins on CO, providing a molecular link between DELLA proteins, key components in GA signaling pathway, and CO, a critical flowering activator in photoperiod signaling pathway. This article is protected by copyright. All rights reserved.

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Citations

Oct 31, 2016·Biochimica Et Biophysica Acta. Gene Regulatory Mechanisms·Vittoria Brambilla, Fabio Fornara
Sep 27, 2018·Genes & Development·Adriana B ArongausRoman Ulm
Nov 6, 2018·Plant & Cell Physiology·Jun WuHongli Lian
Dec 1, 2019·Journal of Integrative Plant Biology·Shengjie BaoHao Yu
Feb 19, 2020·Journal of Experimental Botany·Atsuko Kinoshita, René Richter
Aug 28, 2020·Plant & Cell Physiology·Sha Yu, Jia-Wei Wang
Jan 26, 2017·Frontiers in Plant Science·Hang ZhaoGang Li
May 11, 2017·Frontiers in Plant Science·Asier Briones-MorenoMiguel A Blázquez
Jun 20, 2020·Botanical Studies·Chun-Yen Yang, Chih-Wen Sun
Jun 21, 2018·Frontiers in Plant Science·Ben Trevaskis
Oct 29, 2020·The Plant Journal : for Cell and Molecular Biology·Takeshi Izawa
Mar 30, 2021·Frontiers in Plant Science·Gloria Serrano-BuenoFederico Valverde
Jun 3, 2021·International Journal of Molecular Sciences·Stella QuirozBerenice García-Ponce
Sep 28, 2021·Frontiers in Genetics·Yuanyuan JiangFangfang Xie

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