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

C. Ritter | Zendy; J. L. Dangl | Zendy

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

Author(s) -

C. Ritter,

J. L. Dangl

Publication year - 1996

Publication title -

the plant cell

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.324

H-Index - 341

eISSN - 1532-298X

pISSN - 1040-4651

DOI - 10.1105/tpc.8.2.251

Subject(s) - pseudomonas syringae , biology , arabidopsis , gene , plant disease resistance , interference (communication) , pathogen , genetics , npr1 , r gene , rna interference , microbiology and biotechnology , mutant , medicine , heart failure , channel (broadcasting) , rna , natriuretic peptide , electrical engineering , engineering

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.

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