[The antagonism of the natural microflora of grain as a regulating factor in Fusarium sporotrichiella toxin formation].

The ability of 32 fungi species of 9 genera that belong to field grain microflora to inhibit the growth of F. sporotrichiella strain 53315 producing T2 toxin has been studied. Antagonistic properties have been found in representatives of Epicoccum and Drechslera genera.

[The search for microorganisms sensitive to deoxynivalenol, zearalenone and aflatoxin B1].

Sensitivity to T-2 toxin, deoxynivalenol (DOV), zearalenon (ZL) and aflatoxin (AT) B1 was comparatively studied in yeast strains Saccharomyces fragilis 25 D, Candida pseudotropicalis 44 nk and Saccharomyces lactis BKMY-459, sensitive to T-2 toxin, and strain Bacillus megaterium BKMB-44, sensitive to toxic metabolites of Aspergillus species of fungi. Minimum amounts of T-2 toxin inducing on Silufol plates sites of the yeast strain growth suppression, comprised 20-50 ng, maximum sensitivity was recorded in Saccharomyces lactis BKMY-459. Minimum content of DOV suppressing the yeast growth comprised 10-50 micrograms, and that of ZL 10-25 micrograms.

[Detection of toxigenic Fusarium strains, producing T-2 toxin, in wheat grain mycoflora by microbiologic assay].

Twenty-three Fusarium strains were isolated from wheat grain harvested in the Moscow region. The ability of the fungi cultures isolated for producing T-2 toxin was studied by the microbiological assay with the use of Saccharomyces lactis culture (BKMU-459) susceptible to T-2 toxin. The toxigenic properties were shown by 9 cultures.