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Fusarium and fumonisin occurrence in Argentinian corn at different ear maturity stages

, : Fusarium and fumonisin occurrence in Argentinian corn at different ear maturity stages. Journal of Agricultural & Food Chemistry 44(9): 2797-2801

The distribution of Fusarium species (Liseola section) and fumonisins B-1, B-2, and B-3 (FB-1, FB-2, and FB-3) in corn at the field stage to harvest time has been investigated. Corn samples were obtained from the 45th day after flowering to harvest stage, with 15 day intervals. A good correlation between fungal species and fumonisin contamination was observed. In particular, fumonisin contamination was higher in samples with fungal infection represented mainly by Fusarium moniliforme and Fusarium proliferatum, two well-known producers of fumonisins. Low levels of fumonisins were detected at the first and second samplings, when mainly Fusarium subglutinans, a fumonisin nonproducer species, was recorded. The three samplings after physiological maturity showed predominant F. moniliforme and F. proliferatum infection and a considerable contamination with fumonisins. In these samples the levels of FB-1 averaged above mu-g/g and FB-2 and FB-3 levels showed similar values but lower than FB-1 values. This is the first report of fumonisins in Argentinian corn at field stages.


DOI: 10.1021/jf950381d

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