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dc.contributor.authorSILVA, K. J. D. ept_BR
dc.contributor.authorSOUZA, E. A.pt_BR
dc.contributor.authorFREIRE, C. N. S.pt_BR
dc.contributor.authorISHIKAWA, F. H.pt_BR
dc.date.accessioned2015-11-30T11:11:11Zpt_BR
dc.date.available2015-11-30T11:11:11Zpt_BR
dc.date.created2015-11-30pt_BR
dc.date.issued2015pt_BR
dc.identifier.citationGenetics and Molecular Research, Ribeirão Preto, v. 14, n. 3, p. 7436-7445, July 2015.pt_BR
dc.identifier.issn1676-5680pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1030017pt_BR
dc.descriptionThe fungus Pseudocercospora griseola is the causal agent of angular leaf spot, a common bean (Phaseolus vulgaris L.) disease. The successful development of angular leaf spot-resistant cultivars depends on understanding the levels of variability in pathogen populations. P. griseola shows great pathogenic and genetic variation using inoculation on differential bean cultivars and molecular markers. Nevertheless, how this variability develops is not clearly understood. Parasexuality has been presented as a mechanism used by asexual fungi to increase variation. Hyphal fusion is the first step for the parasexual cycle, and it can be considered an additional trait for population studies. The aim of this study was to identify hyphal fusion (anastomosis) among P. grisola isolates and to evaluate the variability of isolates using analyses of anastomosis groups and RAPD markers. Hyphal anastomosis was observed in all isolates. Three isolates showed 85.0% compatibility and were compatible with 17 isolates. This is the first report of the occurrence of anastomosis between P. griseola isolates. Sixteen anastomosis groups were observed and only one group was formed by five isolates (Pg-01, Pg-02, Pg-07, Pg-08, and Pg-12). There was a large number of anastomosis groups and absence of clustering among isolates for hyphal fusion, demonstrating the existence of genetic variability for loci involved in the control of this trait. High genotypic variability by RAPD markers was detected, but there was no relationship between genotype and anastomosis group. More studies are necessary to elucidate further the process of asexual recombination in this phytopathogen.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectFeijoeiro comumpt_BR
dc.subjectCiclo parassexualpt_BR
dc.subjectAngular leaf spotpt_BR
dc.subjectCommon beanpt_BR
dc.subjectRAPD markerspt_BR
dc.titleAnastomosis groups and molecular variation in Pseudocercospora griseola.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-07-27T11:11:11Zpt_BR
dc.subject.thesagroMancha angularpt_BR
dc.subject.thesagroMarcador molecularpt_BR
dc.subject.nalthesaurusParasexual cyclept_BR
dc.subject.nalthesaurusPhaeoisariopsis griseolapt_BR
riaa.ainfo.id1030017pt_BR
riaa.ainfo.lastupdate2016-07-27pt_BR
dc.identifier.doihttp://dx.doi.org/10.4238/2015.July.3.19pt_BR
dc.contributor.institutionKAESEL JACKSON DAMASCENO E SILVA, CPAMN; E.A. Souza, Universidade Federal de Lavras, Laboratório de Resistência de Plantas a Doenças e Genética Molecular, Departamento de Biologia, Lavras, MG.; C.N.S. Freire, Universidade Federal de Lavras, Laboratório de Resistência de Plantas a Doenças e Genética Molecular, Departamento de Biologia, Lavras, MG.; F.H. Ishikawa, Colegiado de Engenharia Agronômica, Universidade Federal do Vale do São Francisco, Petrolina, PE.pt_BR
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