Document Detail

RIN4-like proteins mediate resistance protein-derived soybean defense against Pseudomonas syringae.
MedLine Citation:
PMID:  21051954     Owner:  NLM     Status:  MEDLINE    
Resistance (R) protein mediated recognition of pathogen avirulence effectors triggers signaling that induces a very robust form of species-specific immunity in plants. The soybean Rpg1-b protein mediates this form of resistance against the bacterial blight pathogen, Pseudomonas syringae expressing AvrB Pgyrace4. Likewise, the Arabidopsis RPM1 protein also mediates species-specific resistance against AvrB expressing bacteria. RPM1 and Rpg1-b are non-orthologous and differ in their requirements for downstream signaling components. We recently showed that the activation of Rpg1-b derived resistance signaling requires two host proteins that directly interact with AvrB. These proteins share high sequence similarity with the Arabidopsis RPM1 interacting protein 4 (RIN4), which is essential for RPM1-derived resistance. The two soybean RIN4-like proteins (GmRIN4a and b) differ in their abilities to interact with Rpg1-b as well as to complement the Arabidopsis rin4 mutation. Because the two GmRIN4 proteins interact with each other, we proposed that they might function as a heteromeric complex in mediating Rpg1-b-derived resistance. Absence of GmRIN4a or b enhanced basal resistance against bacterial and oomycete pathogens in soybean. Lack of GmRIN4a also enhanced the virulence of avrB bacteria in plants lacking Rpg1-b. Our studies suggest that multiple RIN4-like proteins proteins mediate R-mediated signaling, in soybean.
Devarshi Selote; Aardra Kachroo
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2010-11-01
Journal Detail:
Title:  Plant signaling & behavior     Volume:  5     ISSN:  1559-2324     ISO Abbreviation:  Plant Signal Behav     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2011-05-09     Completed Date:  2011-09-01     Revised Date:  2013-07-03    
Medline Journal Info:
Nlm Unique ID:  101291431     Medline TA:  Plant Signal Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1453-6     Citation Subset:  IM    
Department of Plant Pathology, University of Kentucky, Lexington, KY, USA.
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MeSH Terms
Arabidopsis / metabolism
Arabidopsis Proteins / genetics,  metabolism*
Carrier Proteins / genetics,  metabolism*
Gene Expression Regulation, Plant / physiology*
Genetic Predisposition to Disease
Genome, Plant
Plant Diseases / microbiology*
Plant Proteins / genetics,  metabolism*
Pseudomonas syringae / physiology*
Soybeans / metabolism*
Reg. No./Substance:
0/Arabidopsis Proteins; 0/Carrier Proteins; 0/Plant Proteins; 0/RIN4 protein, Arabidopsis

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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