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Resumen
Northern corn leaf blight (NCLB) is one of the most important diseases in maize worldwide. It is caused by the fungus Exserohilum turcicum, which exhibits a high genetic variability for virulence, and hence physiological races have been reported. Disease control is based mainly on fungicide application and host resistance. Qualitative resistance has been widely used to control NCLB through the deployment of Ht genes. Known pathogen races are designated [ver mas...]
dc.contributor.authorNavarro, Barbara Ludwig
dc.contributor.authorRamos Romero, Lucía
dc.contributor.authorKistner, María Belén
dc.contributor.authorIglesias, Juliana
dc.contributor.authorVon Tiedemann, Andreas
dc.date.accessioned2021-04-08T15:48:09Z
dc.date.available2021-04-08T15:48:09Z
dc.date.issued2021-02
dc.identifier.issn1983-2052 (online)
dc.identifier.otherhttps://doi.org/10.1007/s40858-020-00417-x
dc.identifier.urihttp://hdl.handle.net/20.500.12123/9049
dc.identifier.urihttps://link.springer.com/article/10.1007/s40858-020-00417-x
dc.description.abstractNorthern corn leaf blight (NCLB) is one of the most important diseases in maize worldwide. It is caused by the fungus Exserohilum turcicum, which exhibits a high genetic variability for virulence, and hence physiological races have been reported. Disease control is based mainly on fungicide application and host resistance. Qualitative resistance has been widely used to control NCLB through the deployment of Ht genes. Known pathogen races are designated according to their virulence to the corresponding Ht gene. Knowledge about of E. turcicum race distribution in maize-producing areas is essential to develop and exploit resistant genotypes. Maize leaves showing distinct elliptical grey-green lesions were collected from maize-producing areas of Argentina and Brazil, and 184 monosporic E. turcicum isolates were obtained. A total of 66 isolates were collected from Argentina during 2015, 2018 and 2019, while 118 isolates from Brazil were collected during 2017, 2018 and 2019. All isolates were screened on maize differential lines containing Ht1, Ht2, Ht3 and Htn1 resistance genes. In greenhouse experiments, inoculated maize plants were evaluated at 14 days after inoculation. Resistance reaction was characterized by chlorosis, and susceptibility was defined by necrosis in the absence of chlorosis. The most frequent race was 0 in both Argentina (83%) and Brazil (65%). Frequencies of race 1 (6% and 24%) and race 23N (5% and 10%) were very low in Argentina and Brazil, respectively. The high frequency of race 0 isolates provides evidence that qualitative resistance based on the tested Ht genes is not being used extensively in Argentina and Brazil to control NCLB. This information may be relevant for growers and breeding programs as the incidence of NCLB is increasing in both countries.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherSpringeres_AR
dc.relationinfo:eu-repograntAgreement/INTA/2019-PD-E4-I090-001/2019-PD-E4-I090-001/AR./Análisis de patosistemas en cultivos agrícolas y especies forestales. Caracterización de sus componentes
dc.relationinfo:eu-repograntAgreement/INTA/2019-PE-E6-I128-001/2019-PE-E6-I128-001/AR./Mejoramiento genético de maíz y sorgo
dc.rightsinfo:eu-repo/semantics/openAccesses_AR
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.sourceTropical Plant Pathology 46 : 1-10. (February 2021)es_AR
dc.subjectMaízes_AR
dc.subjectMaizeeng
dc.subjectControl de Enfermedades de Plantases_AR
dc.subjectPlant Disease Controleng
dc.subjectExserohilumes_AR
dc.subjectFungicidases_AR
dc.subjectFungicideseng
dc.subjectArgentinaes_AR
dc.subjectBrasiles_AR
dc.subjectBrazileng
dc.subjectTizónes_AR
dc.subjectBlighteng
dc.subjectResistencia a la Enfermedades_AR
dc.subjectDisease Resistanceeng
dc.subjectGeneses_AR
dc.subject.otherPoblación Patógenaes_AR
dc.titleAssessment of physiological races of Exserohilum turcicum isolates from maize in Argentina and Braziles_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/publishedVersiones_AR
dc.rights.licenseCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.description.origenEEA Pergaminoes_AR
dc.description.filFil: Navarro, Barbara Ludwig. Georg-August-Universität Göttingen. Division of Plant Pathology and Crop Protection. Department of Crop Sciences; Alemaniaes_AR
dc.description.filFil: Ramos Romero, Lucía. Georg-August-Universität Göttingen. Division of Plant Pathology and Crop Protection. Department of Crop Sciences; Alemaniaes_AR
dc.description.filFil: Ramos Romero, Lucía. The New Zealand Institute for Plant and Food Research Limited; Nueva Zelandaes_AR
dc.description.filFil: Kistner, María Belén. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento de Maíz; Argentinaes_AR
dc.description.filFil: Kistner, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.description.filFil: Iglesias, Juliana. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Departamento de Maíz; Argentina.es_AR
dc.description.filFil: Iglesias, Juliana. Universidad Nacional del Noroeste de la Provincia de Buenos Aires. Escuela de Agrarias, Naturales y Ambientales; Argentinaes_AR
dc.description.filFil: Von Tiedemann, Andreas. Georg-August-Universität Göttingen. Division of Plant Pathology and Crop Protection. Department of Crop Sciences; Alemaniaes_AR
dc.subtypecientifico


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