Production of fumonisins byFusariumspecies of Taiwan

摘要

Twenty-nineFusariumspecies isolated from various sources in different districts of Taiwan were tested for their ability to produce fumonisins in corn cultures. OnlyFusarium moniliformeproduced fumonisin B1(FB1) and fumonisin B2(FB2). The finding that the other 28Fusariumspecies produced neither FB1nor FB2is preliminary because only one strain per species was studied. The detection of FB1and FB2in cultures ofF. moniliformewas demonstrated by TLC and HPLC, and FB1was further confirmed by mass spectrometry. In a separate experiment, in which 38 strains ofF. moniliformewere tested for fumonisins, approximately 66 (25/38) produced FB1and/or FB2. Of the 25 strains, 14 produced only FB1and 11 produced both FB1and FB2, and the amounts of FB1and FB2produced by different strains varied greatly. This is the first report that fumonisins are found in corn cultures experimentally infected withF. moniliformestrains from Taiwan. It is safe to assume that fumonisin producing strains ofF. moniliformeare widely distributed among the economic crops such as corn, rice, sugarcane, and sorghum throughout the Island.