Abstract
Five species of Fusarium, F. proliferatum, F. fujikuroi, F. verticillioides, F. sacchari, and Fusarium sp. are associated with pineapple fruit rot and leaf spot diseases in Malaysia. Their ability to produce mycotoxins was analysed by the detection of the FUM1 gene as an indicator of fumonisin B1 (FB1) production and by quantification of FB1, moniliformin (MON), and beauvericin (BEA) using ultra performance liquid chromatography. All isolates of F. proliferatum, F. fujikuroi, and F. verticillioides showed the presence of FUM1 band and were able to produce FB1 in vitro. MON was produced by all isolates of Fusarium species, however, BEA was produced only by F. verticillioides isolates and some F. proliferatum, F. fujikuroi, and Fusarium sp. isolates. Production of FB1, MON, and BEA in vitro can be used to predict mycotoxigenic potential of the Fusarium spp. associated with pineapple diseases.
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