Revista de microbiologia | |
Toxigenic potential of Fusarium graminearum isolated from maize of northwest Argentina | |
Sampietro, D.A.1  | |
[1] Universidad Nacional de Tucumán, San Miguel de Tucumán, Argentina | |
关键词: Fusarium graminearum; trichothecenes; maize; chemotypes.; | |
DOI : 10.1590/S1517-83822013000200011 | |
学科分类:农业科学(综合) | |
来源: Sociedade Brasileira de Microbiologia / Brazilian Society for Microbiology | |
【 摘 要 】
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.
【 授权许可】
CC BY-NC
【 预 览 】
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RO201910250062708ZK.pdf | 630KB | download |