A SELECTIVE METHOD FOR THE DIFFERENTIATION OF FUSARIUM-GRAMINEARUM FROM ALL OTHER MOLDS

Fusarium graminearum a well known producer of mycotoxins can be differ entiated from all other moulds by a simple selective method. In experi ments 165 stock cultures of Fusarium and 13 mould isolates of other sp ecies were set on an 0,2% mannitolagar and incubated under different t emperatures. After incubation at 30-degrees-C an intensive cherry-red pigmentation could be obtained only by Fusarium graminearum. By none o f the other isolates was found such a pigmentation. The ability to mak e a colour was strictly linked whith the morphological species level o f Fusarium graminearum.