Nonhost resistance of rice to rust pathogens

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dc.creatorAyliffe, Michael
dc.creatorDevilla, Rosangela
dc.creatorMago, Rohit
dc.creatorWhite, Rosemary
dc.creatorTalbot, Mark
dc.creatorPryor, Anthony
dc.creatorLeung, Hei
dc.date2011-10
dc.date2024-12-19T12:55:33Z
dc.date2024-12-19T12:55:33Z
dc.date.accessioned2026-06-27T04:09:38Z
dc.descriptionRice is atypical in that it is an agricultural cereal that is immune to fungal rust diseases. This report demonstrates that several cereal rust species (Puccinia graminis f. sp tritici, P. triticina, P. striiformis, and P. hordei) can infect rice and produce all the infection structures necessary for plant colonization, including specialized feeding cells (haustoria). Some rust infection sites are remarkably large and many plant cells are colonized, suggesting that nutrient uptake occurs to support this growth. Rice responds with an active, nonhost resistance (NHR) response that prevents fungal sporulation and that involves callose deposition, production of reactive oxygen species, and, occasionally, cell death. Genetic variation for the efficacy of NHR to wheat stem rust and wheat leaf rust was observed. Unlike cereal rusts, the rust pathogen (Melampsora lini) of the dicotyledenous plant flax (Linum usitatissimum) rarely successfully infects rice due to an apparent inability to recognize host-derived signals. Morphologically abnormal infection structures are produced and appressorial-like structures often don't coincide with stomata. These data suggest that basic compatibility is an important determinate of nonhost infection outcomes of rust diseases on cereals, with cereal rusts being more capable of infecting a cereal nonhost species compared with rust species that are adapted for dicot hosts.
dc.identifierhttps://hdl.handle.net/10568/165857
dc.identifier.urihttp://hdl.handle.net/123456789/23495
dc.languageen
dc.publisherScientific Societies
dc.sourceAyliffe, Michael; Devilla, Rosangela; Mago, Rohit; White, Rosemary; Talbot, Mark; Pryor, Anthony and Leung, Hei. 2011. Nonhost resistance of rice to rust pathogens. MPMI, Volume 24 no. 10 p. 1143-1155
dc.subjectdisease resistance
dc.subjectfungal diseases
dc.subjectfungal morphology
dc.subjectfungi
dc.subjectgenetic variation
dc.subjecthosts
dc.subjectpathogens
dc.subjectplant diseases
dc.subjectplant pathogenic fungi
dc.subjectstomata
dc.titleNonhost resistance of rice to rust pathogens
dc.typeJournal Article

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Instituto Internacional de Investigación del Arroz (IRRI)