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PMID: 12239384 Published · ppublish English Journal Article

Interference between Two Specific Pathogen Recognition Events Mediated by Distinct Plant Disease Resistance Genes.

The Plant cell ·Vol. 8 ·No. 2 ·1996-02-00 ·Pages 251-257

Ritter C, Dangl JL

Abstract

We demonstrate that the interaction of the avirulence gene avrRpt2 and the cognate resistance gene RPS2 interferes with the interaction of avrRpm1-RPM1 in Arabidopsis. Interference is mediated outside of the bacterial pathogen Pseudomonas syringae, presumably at the level of recognition of avr-dependent signals, yet does not require the wild-type RPS2 product. A numerical excess of P. syringae expressing avrRpm1 can overcome this interference in mixed inoculations. The interference of avrRpt2-RPS2 engagement with RPM1-dependent functions is mirrored by transcriptional activation of genes preferentially expressed during RPM1- or RPS2-mediated disease resistance reactions. This demonstration of interference between two plant disease resistance genes suggests that their products compete for a common element(s) in a signal transduction pathway leading to disease resistance.

Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Ritter C.
Max-Delbruck Laboratory, Carl-von-Linne Weg 10, 50829 Cologne, Germany.
Dangl J. L.
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Article Info
Journal
The Plant cell
Abbr.
Plant Cell
ISSN
1532-298X
DOI
10.1105/tpc.8.2.251
Published
1996-02-00
Pages
251-257
Language
English
Region
England
NLM ID
9208688
PMCID
PMC161095
External Links
PubMed source DOI: 10.1105/tpc.8.2.251 PMC Full Text View journal details
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