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Omidvar, Vahid, Dugyala, Sheshanka, Li, Feng, Rottschaefer, Susan, Miller, Marisa, Ayliffe, Michael, Moscou, Matthew James 
ORCID: https://orcid.org/0000-0003-2098-6818, Kianian, Shahryar F and Figueroa, Melania
(2018)
Detection of race-specific resistance against Puccinia coronata f. sp. avenae in Brachypodium species.
Phytopathology, 108 (12).
pp. 1443-1454.
ISSN 0031-949X
Abstract
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.
| Item Type: | Article |
|---|---|
| Faculty \ School: | Faculty of Science > The Sainsbury Laboratory Faculty of Science > School of Biological Sciences |
| Depositing User: | LivePure Connector |
| Date Deposited: | 31 Aug 2018 14:32 |
| Last Modified: | 21 Oct 2022 19:36 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/68176 |
| DOI: | 10.1094/PHYTO-03-18-0084-R |
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