Document Detail

Harpins and ion channels modulations: Many ways to die.
MedLine Citation:
PMID:  19841656     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Harpins are type three secretion system (TTSS) effectors. While few harpins are thought to be translocators of TTSS effectors through the host plasma membrane during plant/bacteria interactions, functions of many harpins remain for the moment mysterious. We recently showed that the HrpW(ea) harpin from Erwinia amylovora, at subnamolar concentration, was able to decrease defense responses triggered by another harpin from this bacteria, HrpN(ea). This antagonism could be the result of opposed anion channels modulations triggered by HrpW(ea) and HrpN(ea). At upper concentrations HrpW(ea) alone, or in combination with HrpN(ea), was able to induce cell death. This form of cell death involves strong ion channel activation and shares similarity with apoptosis volume decrease (AVD), a form of programmed cell death well described in animal cells. All these results suggest different ways for harpins to trigger cell death and highlight the role of ion channels during cell death processes.
David Reboutier; François Bouteau
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Plant signaling & behavior     Volume:  3     ISSN:  1559-2316     ISO Abbreviation:  Plant Signal Behav     Publication Date:  2008 May 
Date Detail:
Created Date:  2009-10-20     Completed Date:  2012-10-02     Revised Date:  2013-05-23    
Medline Journal Info:
Nlm Unique ID:  101291431     Medline TA:  Plant Signal Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  314-6     Citation Subset:  -    
LEM; EA 3514; Université Paris Diderot; Case 7069; Paris, France.
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