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dc.contributor.author
Vanzetti, Leonardo Sebastián
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dc.contributor.author
Campos, P.
dc.contributor.author
Demichelis, M.
dc.contributor.author
Lombardo, Lucio Andrés
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dc.contributor.author
Aurelia, P. R.
dc.contributor.author
Vaschetto, Luis Maria Benjamin
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dc.contributor.author
Bainotti, C. T.
dc.contributor.author
Helguera, Marcelo
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dc.date.available
2023-03-17T10:25:17Z
dc.date.issued
2011-05
dc.identifier.citation
Vanzetti, Leonardo Sebastián; Campos, P.; Demichelis, M.; Lombardo, Lucio Andrés; Aurelia, P. R.; et al.; Identification of leaf rust resistance genes in selected Argentinean bread wheat cultivars by gene postulation and molecular markers; Pontificia Universidad Católica de Valparaíso; Electronic Journal of Biotechnology; 14; 3; 5-2011; 1-17
dc.identifier.issn
0717-3458
dc.identifier.uri
http://hdl.handle.net/11336/190844
dc.description.abstract
Leaf rust, caused by Puccinia triticina Eriks. is a common and widespread disease of bread wheat (Triticum aestivum L.), in Argentina. Host resistance is the most economical, effective and ecologically sustainable method of controlling the disease. Gene postulation helps to determine leaf rust resistance genes (Lr genes) that may be present in a large group of wheat germplasm. Additionally presence of Lr genes can be determined using associated molecular markers. The objective of this study was to identify Lr genes that condition leaf rust resistance in 66 wheat cultivars from Argentina. Twenty four differential lines with individual known leaf rust resistance genes were tested with 17 different pathotypes of leaf rust collected from Argentina. Leaf rust infection types produced on seedling plants of the 66 local cultivars were compared with the infection types produced by the same pathotypes on Lr differentials to postulate which seedling leaf rust genes were present. Presence of Lr9, Lr10, Lr19, Lr20, Lr21, Lr24, Lr25, Lr26, Lr29, Lr34, Lr35, Lr37, Lr47 and Lr51 was also determined using molecular markers. Eleven different Lr genes were postulated in the material: Lr1, Lr3a, Lr3ka, Lr9, Lr10, Lr16, Lr17, Lr19, Lr24, Lr26, Lr41. Presence of Lr21, Lr25, Lr29, and Lr47 could not be determined with the seventeen pathotypes used in the study because all were avirulent to these genes. Eleven cultivars (16.7%) were resistant to all pathotypes used in the study and the remaining 55 (83.3%) showed virulent reaction against one or more local pathotypes. Cultivars with seedling resistance gene combinations including Lr16 or single genes Lr47 (detected with molecular marker), Lr19 and Lr41, showed high levels of resistance against all pathotypes or most of them. On the opposite side, cultivars with seedling resistance genes Lr1, Lr3a, Lr3a + Lr24, Lr10, Lr3a + Lr10, Lr3a + Lr10 + Lr24 showed the highest number of virulent reactions against local pathotypes. Occurrence of adult plant resistance genes Lr34, Lr35 and Lr37 in local germplasm was evaluated using specific molecular markers confirming presence of Lr34 and Lr37. Our data suggest that combinations including seedling resistance genes like Lr16, Lr47, Lr19, Lr41, Lr21, Lr25 and Lr29, with adult plant resistance genes like Lr34, SV2, Lr46 will probably provide durable and effective resistance to leaf rust in the region.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pontificia Universidad Católica de Valparaíso
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
GENETIC CONTROL OF PATHOGENS
dc.subject
MOLECULAR MARKERS
dc.subject
PLANT BREEDING
dc.subject.classification
Biotecnología Agrícola y Biotecnología Alimentaria
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dc.subject.classification
Biotecnología Agropecuaria
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Identification of leaf rust resistance genes in selected Argentinean bread wheat cultivars by gene postulation and molecular markers
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-03-15T20:32:35Z
dc.journal.volume
14
dc.journal.number
3
dc.journal.pagination
1-17
dc.journal.pais
Chile
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dc.journal.ciudad
Valparaiso
dc.description.fil
Fil: Vanzetti, Leonardo Sebastián. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Córdoba. Estación Experimental Agropecuaria Marcos Juárez; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
dc.description.fil
Fil: Campos, P.. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Bordenave; Argentina
dc.description.fil
Fil: Demichelis, M.. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Córdoba. Estación Experimental Agropecuaria Marcos Juárez; Argentina
dc.description.fil
Fil: Lombardo, Lucio Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Córdoba. Estación Experimental Agropecuaria Marcos Juárez; Argentina
dc.description.fil
Fil: Aurelia, P. R.. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Córdoba. Estación Experimental Agropecuaria Marcos Juárez; Argentina
dc.description.fil
Fil: Vaschetto, Luis Maria Benjamin. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Córdoba. Estación Experimental Agropecuaria Marcos Juárez; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
dc.description.fil
Fil: Bainotti, C. T.. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Bordenave; Argentina
dc.description.fil
Fil: Helguera, Marcelo. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Córdoba. Estación Experimental Agropecuaria Marcos Juárez; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
dc.journal.title
Electronic Journal of Biotechnology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/685
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.2225/vol14-issue3-fulltext-14
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