Detection of race-specific resistance against Puccinia coronata f. sp. avenae in Brachypodium species
| Autor: | Feng Li, Michael Ayliffe, Susan M. Rottschaefer, Vahid Omidvar, Melania Figueroa, Sheshanka Dugyala, Marisa E. Miller, Matthew J. Moscou, Shahryar F. Kianian |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine Avena Genotype Rust (fungus) Plant Science 01 natural sciences 03 medical and health sciences chemistry.chemical_compound Puccinia coronata Species Specificity Botany Colonization Pathogen Disease Resistance Plant Diseases biology Host (biology) Basidiomycota Jasmonic acid food and beverages biology.organism_classification Plant Leaves 030104 developmental biology Phenotype chemistry Genetic Loci Host-Pathogen Interactions Brachypodium Brachypodium distachyon Agronomy and Crop Science 010606 plant biology & botany |
| DOI: | 10.1101/281568 |
| Popis: | Oat crown rust caused by Puccinia coronata f. sp. avenae is the most destructive foliar disease of cultivated oat. Characterization of genetic factors controlling resistance responses to Puccinia coronata f. sp. avenae in non-host species could provide new resources for developing disease protection strategies in oat. We examined symptom development and fungal colonization levels of a collection of Brachypodium distachyon and B. hybridum accessions infected with three North American P. coronata f. sp. avenae isolates. Our results demonstrated that colonization phenotypes are dependent on both host and pathogen genotypes, indicating a role for race-specific responses in these interactions. These responses were independent of the accumulation of reactive oxygen species. Expression analysis of several defense-related genes suggested that salicylic acid and ethylene-mediated signaling, but not jasmonic acid are components of resistance reaction to P. coronata f. sp. avenae. Our findings provide the basis to conduct a genetic inheritance study to examine if effector-triggered immunity contributes to non-host resistance to P. coronata f. sp. avenae in Brachypodium species. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|