Document Detail


Taking the very first steps: from polarity to axial domains in the early Arabidopsis embryo.
MedLine Citation:
PMID:  21172809     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Arabidopsis embryos follow a predictable sequence of cell divisions, facilitating a genetic analysis of their early development. Both asymmetric divisions and cell-to-cell communication are probably involved in generating specific gene expression domains along the main axis within the first few division cycles. The function of these domains is not always understood, but recent work suggests that they may serve as a basis for organizing polar auxin flux. Auxin acts as systemic signal throughout the life cycle and, in the embryo, has been demonstrated to direct formation of the main axis and root initiation at the globular stage. At about the same time, root versus shoot fates are imposed on the incipient meristems by the expression of antagonistic regulators at opposite poles of the embryo. Some of the key features of the embryonic patterning process have emerged over the past few years and may provide the elements of a coherent conceptual framework.
Authors:
Sangho Jeong; Martin Bayer; Wolfgang Lukowitz
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2010-12-20
Journal Detail:
Title:  Journal of experimental botany     Volume:  -     ISSN:  1460-2431     ISO Abbreviation:  -     Publication Date:  2010 Dec 
Date Detail:
Created Date:  2010-12-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882906     Medline TA:  J Exp Bot     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Plant Biology, University of Georgia, Athens, GA 30602-7271, USA.
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