Toxigenic potential of Fusarium graminearum isolated from maize of northwest Argentina
Sampietro, D A; Apud, G R; Belizán, M M E; Vattuone, M A; Catalán, C A N.
Braz. J. Microbiol.;
44(2): 417-422, 2013.
Artigo
em Inglês
| VETINDEX
| ID: vti-13427
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.(AU)
Biblioteca responsável:
BR68.1
Localização: BR68.1
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