Hormone signalling crosstalk in plant growth regulation.

Details

Serval ID
serval:BIB_DAABF27CC9B2
Type
Article: article from journal or magazin.
Publication sub-type
Review (review): journal as complete as possible of one specific subject, written based on exhaustive analyses from published work.
Collection
Publications
Institution
Title
Hormone signalling crosstalk in plant growth regulation.
Journal
Current Biology
Author(s)
Depuydt S., Hardtke C.S.
ISSN
1879-0445 (Electronic)
ISSN-L
0960-9822
Publication state
Published
Issued date
2011
Volume
21
Number
9
Pages
R365-R373
Language
english
Abstract
The remarkable plasticity of plant ontogeny is shaped by hormone pathways, which not only orchestrate intrinsic developmental programs, but also convey environmental inputs. Several classes of plant hormones exist, and among them auxin, brassinosteroid and gibberellin are central for the regulation of growth in general and of cell elongation in particular. Various growth phenomena can be modulated by each of the three hormones, in a sometimes synergistic fashion, suggesting physiological redundancy and/or crosstalk between the different pathways. Whether this means that they target a common and unique transcriptome module, or rather separate growth-promoting transcriptome modules, remains unclear, however. Nevertheless, while surprisingly few molecular mediators of direct crosstalk in the proper sense have been isolated, evidence is accumulating for complex cross-regulatory relations between hormone pathways at the level of transcription, as exemplified in root meristem growth. The growing number of available genome sequences from the green lineage offers first glimpses at the evolution of hormone pathways, which can aid in understanding the multiple relationships observed between these pathways in angiosperms. The available analyses suggest that auxin, gibberellin and brassinosteroid signalling arose during land plant evolution in this order, correlating with increased morphological complexity and possibly conferring increased developmental flexibility.
Keywords
Biological Evolution, Gibberellins/metabolism, Indoleacetic Acids/metabolism, Meristem/growth & development, Meristem/metabolism, Models, Biological, Plant Growth Regulators/metabolism, Plants/growth & development, Receptor Cross-Talk/physiology, Signal Transduction/physiology
Pubmed
Web of science
Open Access
Yes
Create date
01/02/2012 10:05
Last modification date
20/08/2019 15:59
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