Rhizoctonia solani GA-3PT es el principal patógeno asociado con el chancro del tallo y la sarna negra de la papa en Colombia

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dc.contributor.authorFerrucho, Rosa Lilia
dc.contributor.authorCifuentes, Johan Manuel
dc.contributor.authorCeresini, Paulo [UNESP]
dc.contributor.authorGarcía-Domínguez, Celsa
dc.contributor.institutionUniversidad Nacional de Colombia
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:27:24Z
dc.date.available2014-05-27T11:27:24Z
dc.date.issued2012-12-01
dc.description.abstractStem canker and black scurf diseases of potatoes are caused by the basidiomycetous fungus Tanatephorus cucumeris (ana-morphic species complex Rhizoctonia solani). Tese diseases have worldwide distribution wherever potato is grown but their etiology varies depending on the predominance of distinct R. solani anastomosis groups (AGs) in a particular area. Within the species complex, several AGs have been associated with stem canker or black scurf diseases, including AG-1, AG-2-1, AG-2-2, AG-3, AG-4, AG-5 and AG-9. Tis article reports on the most comprehensive population-based study, providing evidence on the distribution of R. solani AGs in Colombian potato fields. A total of 433 isolates were sampled from the main potato cropping areas in Colombia from 2005 to 2009. Isolates were assigned to AGs by conventional PCR assays using specific primers for AG-3, sequencing of the ITS-rDNA and hyphal interactions. Most of the isolates evaluated were assigned to AG-3PT (88.45%), and a few to AG-2-1 (2.54%). Te remaining isolates were binucleate Rhizoctonia (AG-A, E, and I). Pathogenicity tests on the stems and roots of different plant species, including the potato, showed that AG-3PT affects the stems of solanaceous plants. In other plant species, damage was severe in the roots, but not the stems. AG-2-1 caused stem canker of Solanum tuberosum cv. Capiro and in R. raphanistrum and B. campestris subsp. Rapa plantlets and root rot in other plants. Te results of our study indicated that R. solani AG-3PT was the principal pathogen associated with potato stem canker and black scurf diseases of potatoes in Colombia.en
dc.description.affiliationLaboratorio de Biotecnologia Antonio Angarita Zerda (LBAAZ) Faculty of Agronomy Universidad Nacional de Colombia, Bogota
dc.description.affiliationDepartamento de Fitossanidade Engenharia Rural e Solos Universidade Estadual Paulista (UNESP), Sao Paulo
dc.description.affiliationUnespDepartamento de Fitossanidade Engenharia Rural e Solos Universidade Estadual Paulista (UNESP), Sao Paulo
dc.format.extent204-213
dc.identifierhttp://www.revistas.unal.edu.co/index.php/agrocol/article/view/22724
dc.identifier.citationAgronomia Colombiana, v. 30, n. 2, p. 204-213, 2012.
dc.identifier.file2-s2.0-84873349998.pdf
dc.identifier.issn0120-9965
dc.identifier.scopus2-s2.0-84873349998
dc.identifier.urihttp://hdl.handle.net/11449/74006
dc.language.isoeng
dc.language.isospa
dc.relation.ispartofAgronomia Colombiana
dc.relation.ispartofsjr0,175
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectBlack scurf diagnosis
dc.subjectMolecular techniques
dc.subjectSoil-borne fungi
dc.titleRhizoctonia solani GA-3PT es el principal patógeno asociado con el chancro del tallo y la sarna negra de la papa en Colombiaes
dc.title.alternativeRhizoctonia solani AG-3PT is the major pathogen associated with potato stem canker and black scurf in Colombiaen
dc.typeArtigo
dcterms.licensehttp://www.revistas.unal.edu.co/index.php/agrocol/about/submissions#copyrightNotice
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt
unesp.departmentFitossanidade, Engenharia Rural e Solos - FEISpt

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Ilha Solteira - FEIS - Faculdade de Engenharia