Document Detail

Life after meiosis: patterning the angiosperm male gametophyte.
MedLine Citation:
PMID:  20298224     Owner:  NLM     Status:  MEDLINE    
Pollen grains represent the highly reduced haploid male gametophyte generation in angiosperms. They play an essential role in plant fertility by generating and delivering twin sperm cells to the embryo sac to undergo double fertilization. The functional specialization of the male gametophyte and double fertilization are considered to be key innovations in the evolutionary success of angiosperms. The haploid nature of the male gametophyte and its highly tractable ontogeny makes it an attractive system to study many fundamental biological processes, such as cell fate determination, cell-cycle progression and gene regulation. The present mini-review encompasses key advances in our understanding of the molecular mechanisms controlling male gametophyte patterning in angiosperms. A brief overview of male gametophyte development is presented, followed by a discussion of the genes required at landmark events of male gametogenesis. The value of the male gametophyte as an experimental system to study the interplay between cell fate determination and cell-cycle progression is also discussed and exemplified with an emerging model outlining the regulatory networks that distinguish the fate of the male germline from its sister vegetative cell. We conclude with a perspective of the impact emerging data will have on future research strategies and how they will develop further our understanding of male gametogenesis and plant development.
Michael Borg; David Twell
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  Biochemical Society transactions     Volume:  38     ISSN:  1470-8752     ISO Abbreviation:  Biochem. Soc. Trans.     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-03-19     Completed Date:  2010-06-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7506897     Medline TA:  Biochem Soc Trans     Country:  England    
Other Details:
Languages:  eng     Pagination:  577-82     Citation Subset:  IM    
Department of Biology, University of Leicester, Leicester LE1 7RH, UK.
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MeSH Terms
Angiosperms / embryology*,  genetics
Body Patterning / genetics,  physiology*
Cell Differentiation / genetics,  physiology
Cell Division / genetics
Gene Expression Regulation, Developmental
Gene Expression Regulation, Plant
Meiosis / genetics,  physiology*
Models, Biological
Plants, Genetically Modified
Pollen / embryology*,  genetics,  physiology*
Grant Support
//Biotechnology and Biological Sciences Research Council

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