Gibberellin control of stamen development: a fertile field

Stamen development is governed by a conserved genetic pathway, within which the role of hormones has been the subject of considerable recent research. Our understanding of the involvement of gibberellin (GA) signalling in this developmental process is further advanced than for the other phytohormone...

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Bibliographic Details
Published in:Trends in plant science 2011-10, Vol.16 (10), p.568-578
Main Authors: Plackett, Andrew R.G, Thomas, Stephen G, Wilson, Zoe A, Hedden, Peter
Format: Article
Language:English
Subjects:
apoptosis
Arabidopsis - anatomy & histology
Arabidopsis - drug effects
Arabidopsis - growth & development
Arabidopsis thaliana
Biological and medical sciences
Fertility
Flowers - drug effects
Flowers - growth & development
Fundamental and applied biological sciences. Psychology
Gene Expression Regulation, Plant
Genes, Homeobox
gibberellins
Gibberellins - biosynthesis
Gibberellins - chemistry
Gibberellins - pharmacology
Oryza - anatomy & histology
Oryza - drug effects
Oryza - growth & development
Oryza sativa
Plant Growth Regulators - pharmacology
plant hormones
pollen
Pollen - drug effects
Pollen - growth & development
rice
Signal Transduction
transcription factors
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Summary:Stamen development is governed by a conserved genetic pathway, within which the role of hormones has been the subject of considerable recent research. Our understanding of the involvement of gibberellin (GA) signalling in this developmental process is further advanced than for the other phytohormones, and here we review recent experimental results in rice (Oryza sativa) and Arabidopsis (Arabidopsis thaliana) that have provided insight into the timing and mechanisms of GA regulation of stamen development, identifying the tapetum and developing pollen as major targets. GA signalling governs both tapetum secretory functions and entry into programmed cell death via the GAMYB class of transcription factor, the targets of which integrate with the established genetic framework for the regulation of tapetum function at multiple hierarchical levels.
ISSN:1360-1385
1878-4372
DOI:10.1016/j.tplants.2011.06.007