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Provedor de dados:  BJM
País:  Brazil
Título:  Toxigenic potential of Fusarium graminearum isolated from maize of northwest Argentina
Autores:  Sampietro,D.A.
Apud,G.R.
Belizán,M.M.E.
Vattuone,M.A.
Catalán,C.A.N.
Data:  2013-01-01
Ano:  2013
Palavras-chave:  Fusarium graminearum
Trichothecenes
Maize
Chemotypes
Resumo:  Twenty six isolates of Fusarium graminearum from grains of maize hybrids harvested in ±west Argentina were grown on autoclaved rice grain to assess their ability to produce type B trichothecenes. Chemical analysis indicated that 38% of isolates were nivalenol (NIV) producers only, 31% were major NIV producers with high DON(deoxynivalenol)/NIV ratios, 8% were major DON producers with minor NIV production, and 23% were DON producers only. Isolates showed a high variability in their toxigenic potential which was not related to fungal biomass. The distribution of the different chemotypes as well as the high and the low trichothecene-producing Fusarium isolates could not be associated to a geographical origin. Our results confirmed for the first time that isolates of Fusarium graminearum from maize of northwest Argentina are able to produce DON and NIV. A substancial contamination with both NIV and DON is likely in maize from northwest Argentina. Their contents should be quantified in regional surveillances for mycotoxin contamination.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200011
Editor:  Sociedade Brasileira de Microbiologia
Relação:  10.1590/S1517-83822013000200011
Formato:  text/html
Fonte:  Brazilian Journal of Microbiology v.44 n.2 2013
Direitos:  info:eu-repo/semantics/openAccess
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