Document Detail

Inter-cell-layer signalling during Arabidopsis ovule development mediated by the receptor-like kinase STRUBBELIG.
MedLine Citation:
PMID:  20298225     Owner:  NLM     Status:  MEDLINE    
Plant organs, such as ovules and flowers, arise through cellular events that are precisely co-ordinated between cells within and across clonally distinct cell layers. Receptor-like kinases are cell-surface receptors that perceive and relay intercellular information. In Arabidopsis the leucine-rich repeat receptor-like kinase STRUBBELIG (SUB) is required for integument initiation and outgrowth during ovule development, floral organ shape and the control of the cell division plane in the first subepidermal cell layer of floral meristems, among other functions. A major goal is to understand SUB-mediated signal transduction at the molecular level. Present evidence suggests that SUB affects neighbouring cells in a non-cell-autonomous fashion. In addition, our results indicate that SUB is an atypical, or kinase-dead, kinase. Forward genetics identified three genes, QUIRKY (QKY), ZERZAUST and DETORQUEO, that are thought to contribute to SUB-dependent signal transduction. QKY encodes a predicted membrane-bound protein with four cytoplasmic C(2) domains. By analogy to animal proteins with related domain topology, we speculate that QKY may be involved in Ca(2+)-dependent signalling and membrane trafficking. Studying SUB-dependent signalling will contribute to our understanding of how atypical kinases mediate signal transduction and how cells co-ordinate their behaviour to allow organs, such as ovules, to develop their three-dimensional architecture.
Lynette Fulton; Prasad Vaddepalli; Ram Kishor Yadav; Martine Batoux; Kay Schneitz
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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:  2012-06-27    
Medline Journal Info:
Nlm Unique ID:  7506897     Medline TA:  Biochem Soc Trans     Country:  England    
Other Details:
Languages:  eng     Pagination:  583-7     Citation Subset:  IM    
Entwicklungsbiologie der Pflanzen, Wissenschaftszentrum Weihenstephan, Technische Universität München, Emil-Ramann-Strasse 4, 85354 Freising, Germany.
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MeSH Terms
Arabidopsis / embryology*,  growth & development,  physiology
Arabidopsis Proteins / genetics,  physiology*
Body Patterning / genetics
Cell Communication / genetics*,  physiology
Gene Expression Regulation, Plant
Models, Biological
Ovule / embryology*,  growth & development,  physiology
Protein Kinases / genetics,  physiology*
Signal Transduction / physiology
Reg. No./Substance:
0/Arabidopsis Proteins; EC 2.7.-/Protein Kinases; EC protein, Arabidopsis

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