The capacity for the removal of pyrimethanil and fenhexamid, two fungicidesnused to control of Botrytis cinerea in vineyards, has been evaluated during an alcoholic fermentation in batch system and with stationary phase cells of commercial and wild strains Saccharomyces cerevisiae. Stationary cells were performed with yeast biomass harvested from the stationary phase of an anaerobic fermentation process, with separate additions of both fungicides. Removal studies with stationary phase cells were performed with viable and non-viable cells inactivated with sodium azide. This study clearly shows that both Saccharomyces cerevisiae strains were able to remove fenhexamid and pyrimethanil in stationary and fermentative assays. The removal potential is shown to be strain dependent in stationary but not in fermentative assays and it is dependent on the type of fungicide in both stationary and fermentative assays. In stationary phase cultures no significant difference in fungicide removal potential between viable and non-viable cells was observed, indicating that both pesticides were not degraded by metabolically active cells. Fungicides are known as antagonists of intercellular communication. From those results we can predict, in which conditions intercellular communication will occure in presence of both fungicides.
COBISS.SI-ID: 3906936