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Releasing the brakes of plant growth: how GAs shutdown DELLA proteins.

Authors
Type
Published Article
Journal
Journal of Experimental Botany
1460-2431
Publisher
Oxford University Press
Publication Date
Volume
60
Issue
4
Pages
1085–1092
Identifiers
DOI: 10.1093/jxb/ern301
PMID: 19043067
Source
Medline

Abstract

Bioactive gibberellins (GAs) are tetracyclic diterpenoid plant hormones that promote important processes of plant growth and development, such as seed germination, growth through elongation, and floral transition. Thus, mutant plants that are affected in GA biosynthesis or signalling exhibit altered seed germination and, at the adult stage, are dwarf and dark green and also show delayed flowering. The components of the GA metabolism and signalling pathways are reviewed here and recent findings regarding the regulation and possible mode of action of DELLA proteins are discussed.

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