Query (optional)   in Class  All Allele Author Colleague Collection Assembly Gene Gene Class Gene Product Germplasm Image Journal Keyword Library Locus Map Map Data Marker Pathology Polymorphism Probe Protein QTL Rearrangement Reference Sequence Species Trait Trait Study Two Point Data  

---

GrainGenes Reference Report: MPM-14-1376

[Submit comment/correction]

Reference	MPM-14-1376
Title	Rds and Rih mediate hypersensitive cell death independent of gene-for-gene resistance to the oat crown rust pathogen Puccinia coronata f. sp avenae
Journal	Molecular Plant-Microbe Interactions
Year	2001
Volume	14
Pages	1376-1383
Author	Yu GX Braun E Wise RP
Abstract	Summary: The Pca crown rust resistance cluster in the diploid Avena genus confers gene-for-gene specificity to numerous isolates of Puccinia coronata f. sp. avenae. Recombination breakpoint analysis indicates that specificities conferred by the Pca cluster are controlled by at least five distinct genes, designated Pc81, Pc82, Pc83, Pc84, and Pc85. Avena plants with the appropriate genotype frequently respond to P. coronata by undergoing hypersensitive cell death at the sites of fungal infection. Auto-fluorescence of host cells in response to P. coronata occurs in plants that develop visible necrotic lesions but not in plants that lack this phenotype. Two newly described, non-Pc loci were shown to control hypersensitive cell death. Rds (resistance-dependent suppressor of cell death) suppresses the hypersensitive response (HR), but not the resistance, mediated by the Pc82 resistance gene. In contrast, Rih (resistance-independent hypersensitive cell death) confers HR in both resistant and susceptible plants. Linkage analysis indicates that Rds is unlinked to the Pca cluster, whereas Rih is tightly linked to it. These results indicate that multiple synchronous pathways affect the development of hypersensitive cell death and that HR is not essential for resistance to crown rust. Further characterization of these genes will clarify the relationship between plant disease resistance and localized hypersensitive cell death
External Databases	Pubmed: 11768532
Keyword	[ Hide all but 1 of 56 ] analysis avena avenae cell cell death cluster conferring resistance crown crown rust crown rust resistance death defense responses development diploid diploid avena disease disease resistance fungal fungal infection gene gene-for-gene genotype genus hexaploid oat host hypersensitive response identification infection isolate lesions linkage linkage analysis loci locus oat pathogen pathway pca phenotype plant disease resistance plant-disease potato virus-x puccinia puccinia coronata recombination resistance resistance gene resistant response rust rust resistance site specificity stripe rust suppression suppressor

GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.