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dc.contributor.authorPorras, Rafael
dc.contributor.authorMiguel Rojas, Cristina de
dc.contributor.authorPérez de Luque, A.
dc.contributor.authorSillero, Josefina
dc.date.accessioned2022-05-23T11:34:00Z
dc.date.available2022-05-23T11:34:00Z
dc.date.issued2022
dc.identifier.urihttp://hdl.handle.net/10396/22979
dc.description.abstractYellow (stripe) rust, caused by the biotrophic fungus Puccinia striiformis f. sp. tritici (Pst), stands as the most serious wheat disease worldwide, affecting approximately 88% of world wheat production. Even though yellow rust generally develops in cool humid weather conditions, the expansion of new races adapted to warmer climates threatens zones where severe P. striiformis epidemics were infrequent, such as Andalusian wheat cropping areas. In order to characterize yellow rust resistance mechanisms in Spanish germplasm, our study evaluated 19 Spanish bread wheat cultivars against P. striiformis under controlled conditions for percentage of disease severity (DS) and infection type (IT). From this visual evaluation, 74% of evaluated cultivars showed resistant responses against P. striiformis infection with only five cultivars considered susceptible. Subsequently, macroscopic and microscopic components of resistance were identified through image analysis and histological studies, respectively, in six selected cultivars. Macroscopic parameters such as total pustule area and total affected area (%), together with microscopic parameters such as early-aborted and established microcolonies regarding plant cell death responses (%), and microcolony length (µm), were identified as capable of differentiating cultivars quantitatively. Thus, these parameters could be used as a basis for screening resistant responses in future breeding programs, complementary to physiology, genetic and biochemical studies of plant-Pst interaction. Finally, our study seems to be the first macroscopic and microscopic characterization of P. striiformis infection in a collection of Spanish bread wheat cultivars in controlled conditions.es_ES
dc.format.mimetypeapplication/pdfes_ES
dc.language.isoenges_ES
dc.publisherMDPIes_ES
dc.rightshttps://creativecommons.org/licenses/by/4.0/es_ES
dc.sourceAgronomy 12(5), 1239 (2022)es_ES
dc.subjectYellow (stripe) rustes_ES
dc.subjectPlant breedinges_ES
dc.subjectPlant resistancees_ES
dc.subjectFoliar diseasees_ES
dc.subjectTriticum aestivumes_ES
dc.titleMacro- and Microscopic Characterization of Components of Resistance against Puccinia striiformis f. sp. tritici in a Collection of Spanish Bread Wheat Cultivarses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://doi.org/10.3390/agronomy12051239es_ES
dc.relation.projectIDGobierno de España. AVA.AVA2019.020es_ES
dc.relation.projectIDGobierno de España. RTA2015-0072-C03-02es_ES
dc.relation.projectIDGobierno de España. PID2020-118650RR-C32es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES


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