J Integr Plant Biol. ›› 2008, Vol. 50 ›› Issue (7): 825-834.DOI: 10.1111/j.1744-7909.2008.00703.x

• Plant-environmental Interactions • Previous Articles     Next Articles

Evolutionarily Conserved DELLA-mediated Gibberellin Signaling in Plants

Xiu-Hua Gao, Xian-Zhong Huang, Sen-Lin Xiao and Xiang-Dong Fu   

  • Received:2008-04-15 Accepted:2008-04-16 Published:2008-07-10

Abstract: Gibberellins (GAs) play important roles in many essential plant growth and development processes. A family of nuclear growth-repressing DELLA proteins is the key component in GA signaling. GA perception is mediated by GID1, and the key event of GA signaling is the degradation of DELLA proteins via the 26S proteasome pathway. DELLA proteins integrating other plant hormones signaling and environmental cue modulating plant growth and development have been revealed. GA turning on the de-DELLA-repressing system is conserved, and independently establishes step-by-step recruitment of GA-stimulated GID1-DELLA interaction and DELLA growth-repression functions during land plant evolution. These discoveries open new prospects for the understanding of GA action and DELLA-mediated signaling in plants.

Key words: cross-talking, DELLA proteins, evolution, GA signaling, GID1

Editorial Office, Journal of Integrative Plant Biology, Institute of Botany, CAS
No. 20 Nanxincun, Xiangshan, Beijing 100093, China
Tel: +86 10 6283 6133 Fax: +86 10 8259 2636 E-mail: jipb@ibcas.ac.cn
Copyright © 2022 by the Institute of Botany, the Chinese Academy of Sciences
Online ISSN: 1744-7909 Print ISSN: 1672-9072 CN: 11-5067/Q