Utilize este identificador para referenciar este registo: http://hdl.handle.net/10198/10130
Título: Three new aflatoxigenic species of Aspergillus section Flavi isolated in Portugal
Autor: Soares, Célia
Peterson, Stephen W.
Rodrigues, Paula
Lima, Nelson
Venâncio, Armando
Palavras-chave: Aspergillus flavus
Aflatoxins
Fungal taxonomy
Data: 2011
Editora: CBS
Citação: Soares, Célia; Peterson, Stephen; Rodrigues, Paula; Lima, Nelson; Venâncio, Armando (2011) - Three new aflatoxigenic species of Aspergillus section Flavi isolated in Portugal. In Book of Abstracts of the ECCOXXX – 30th Annual Meeting of the European Culture Collection Organisation. Utrech, Holanda
Resumo: Three new aflatoxin-producing species isolated from two Portuguese commodities, almonds and maize, are described. A polyphasic approach based on phenotypic (morphology and extrolites) and molecular characterizations was used to identify these isolates as belonging to new species. From the study of the twenty two isolates obtained in maize and almonds, two were identified as Aspergillus flavus, six as A. minisclerotigenes and four as A. parasiticus. Examination of morphological characters combined with the analyses of aflatoxins and CPA production and molecular data revealed that ten of the Aspergillus section Flavi strains that were isolated do not match that of described species of the section. The multilocus analyses were performed using different primers for DNA regions. Molecular characterization showed that A. mottae, A. sergii and A. transmontanensis are well supported by phylogenetic analyses of the combined data. Aspergillus transmontanensis and A. sergii are phylogenetically related to A. parasiticus. Aspergillus mottae is phylogenetically ancestral to A. flavus and A. parasiticus. Therefore three new species are proposed Aspergillus mottae, Aspergillus sergii and Aspergillus transmontanensis.
Peer review: yes
URI: http://hdl.handle.net/10198/10130
Aparece nas colecções:CIMO - Resumos em Proceedings Não Indexados à WoS/Scopus

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