Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/21950
Tipo: Artigo
Título: Molecular diversity in Fusarium oxysporum isolates from common bean fields in Brazil
Autor(es): Silva, Lucas Fagundes
Cruz, Andre Freire
Sousa, Tiago Vieira
Nicoli, Alessandro
Paula Junior, Trazilbo Jose de
Caixeta, Eveline Teixeira
Zambolim, Laercio
Abstract: The common bean (Phaseolus vulgaris L.) is widely cultivated in Brazil and is known as a very important crop for families in this country. Fusarium wilt severely harms common beans and has become a big issue for this crop. In order to assist the breeding programs that target resistance to this disease, the evaluation of genetic diversity of the pathogen and its molecular characterization are crucial. Thus, the present goal was to identify Fusarium isolates obtained from several places in Brazil using molecular tools; select molecular markers for these isolates; and analyze their diversity. All of isolates were molecularly identified as Fusarium oxysporum f. sp. phaseoli (Fop). By using seven selected SSR markers, the results of diversity obtained by the dendrogram and the Bayesian analysis formed four groups where a large diversity of this fungus was found within each state. However, the groups were more homogenous according to the collection source and the pathogenicity test. More specifically, group 2 was composed of the most virulent strains and originated from Minas Gerais State – UFV, and group 3 was mostly composed by isolates from Goias state. Group I was also more diverse in terms of location and virulence. The overall results indicated a positive correlation between Fusarium diversity and its virulence to common bean. Furthermore, the use of these markers was effective in molecular identification and in detecting polymorphism within F. oxysporum f. sp. phaseoli.
Palavras-chave: Diversity
Fusarium
Genetic
Molecular markers
Phaseolus vulgaris
Editor: European Journal of Plant Pathology
Tipo de Acesso: Springer Nature Switzerland AG.
URI: http://dx.doi.org/10.1007/s10658-018-1479-7
http://www.locus.ufv.br/handle/123456789/21950
Data do documento: 16-Abr-2018
Aparece nas coleções:Fitopatologia - Artigos

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