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https://locus.ufv.br//handle/123456789/19139
Tipo: | Artigo |
Título: | Use of the IRAP marker to study genetic variability in Pseudocercospora fijiensis populations |
Autor(es): | Queiroz, Casley Borges de Santana, Mateus Ferreira Silva, Gilvan Ferreira da Mizubuti, Eduardo Seiti Gomide Araújo, Elza Fernandes de Queiroz, Marisa Vieira de |
Abstract: | Pseudocercospora fijiensis is the etiological agent of black Sigatoka, which is currently considered as one of the most destructive banana diseases in all locations where it occurs. It is estimated that a large portion of the P. fijiensis genome consists of transposable elements, which allows researchers to use transposon-based molecular markers in the analysis of genetic variability in populations of this pathogen. In this context, the inter-retrotransposon-amplified polymorphism (IRAP) was used to study the genetic variability in P. fijiensis populations from different hosts and different geographical origins in Brazil. A total of 22 loci were amplified and 77.3 % showed a polymorphism. Cluster analysis revealed two major groups in Brazil. The observed genetic diversity (H E) was 0.22, and through molecular analysis of variance, it was determined that the greatest genetic variability occurs within populations. The discriminant analysis of principal components revealed no structuring related to the geographical origin of culture of the host. The IRAP-based marker system is a suitable tool for the study of genetic variability in P. fijiensis. |
Palavras-chave: | Genetic variability Transposable element Collection site Single nucleotide change IRAP marker |
Editor: | Current Microbiology |
Tipo de Acesso: | Springer Science+Business Media New York |
URI: | http://dx.doi.org/10.1007/s00284-013-0454-y http://www.locus.ufv.br/handle/123456789/19139 |
Data do documento: | 5-Nov-2013 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf Until 2100-12-31 | texto completo | 421,82 kB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
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