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  • 1
    ISSN: 1573-0832
    Schlagwort(e): Fumonisin B1 ; Gibberella fujikuori ; Fusarium moniliforme
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract We examined 25 strains of Fusarium moniliforme from eight states known to be associated with equine leukoencephalomalacia, a disease caused by the mycotoxin fumonisin B1. We determined the mating population, mating type, and vegetative compatibility group to which each of these strains belonged. All 25 strains were in the ‘A’ mating population; 12 were A+ and 13 were A−. Seventeen of the 25 strains were female fertile; these strains also averaged higher levels of fumonisin B1 production than did the strains that were female sterile. Nitrate non-utilizing (nit) mutants were generated in all 25 strains and each strain was assigned to a unique vegetative compatibility group based on the inability of the derived nit mutants to form a prototrophic heterokaryon with complementary nit mutants derived from any of the other strains examined. From these data, we concluded that the production of fumonisin B1 is a general characteristic of strains from the ‘A’ mating population of Gibberella fujikuroi associated with equine leukoencephalomalacia, since all 25 of the isolates that we examined were genetically distinct individuals.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1573-0832
    Schlagwort(e): Fumonisin B1 ; fusarin C ; lactate dehydrogenase ; primary hepatocytes ; valine incorporation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract Ten different isolates of the common corn fungus, Fusarium moniliforme, were cultured on corn, and the production by the isolates of two important mycotoxins, fusarin C and fumonisin B1, was compared. Additionally, both aqueous and organic extracts of the cultures were tested for cytotoxicity to rat primary hepatocytes by measuring the effects of three dose levels on the ability of the cells to take up valine and to cause the release of the cytoplasmic enzyme, lactate dehydrogenase. The fungal isolates differed drastically in their ability to produce the two mycotoxins and in their cytotoxicity. However the toxic effects could not be accounted for by the content of the two toxins measured. Therefore it appears that there are other toxins, both organic and aqueous soluble compounds, that are toxic to liver cells.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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