Document Detail

Cell-cell interactions during patterning of the Arabidopsis anther.
MedLine Citation:
PMID:  20298223     Owner:  NLM     Status:  MEDLINE    
Key steps in the evolution of the angiosperm anther include the patterning of the concentrically organized microsporangium and the incorporation of four such microsporangia into a leaf-like structure. Mutant studies in the model plant Arabidopsis thaliana are leading to an increasingly accurate picture of (i) the cell lineages culminating in the different cell types present in the microsporangium (the microsporocytes, the tapetum, and the middle and endothecial layers), and (ii) some of the genes responsible for specifying their fates. However, the processes that confer polarity on the developing anther and position the microsporangia within it remain unclear. Certainly, data from a range of experimental strategies suggest that hormones play a central role in establishing polarity and the patterning of the anther initial, and may be responsible for locating the microsporangia. But the fact that microsporangia were originally positioned externally suggests that their development is likely to be autonomous, perhaps with the reproductive cells generating signals controlling the growth and division of the investing anther epidermis. These possibilities are discussed in the context of the expression of genes which initiate and maintain male and female reproductive development, and in the perspective of our current views of anther evolution.
Xiaoqi Feng; Hugh G Dickinson
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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:  2014-07-22    
Medline Journal Info:
Nlm Unique ID:  7506897     Medline TA:  Biochem Soc Trans     Country:  England    
Other Details:
Languages:  eng     Pagination:  571-6     Citation Subset:  IM    
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MeSH Terms
Arabidopsis / cytology,  embryology*,  genetics,  physiology
Body Patterning / genetics,  physiology*
Cell Communication / genetics,  physiology*
Flowers / cytology,  embryology*,  genetics,  physiology
Gene Expression Regulation, Developmental
Gene Expression Regulation, Plant
Genes, Plant
Models, Biological
Grant Support
P18336//Biotechnology and Biological Sciences Research Council; //Biotechnology and Biological Sciences Research Council

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