Antagonism of Lactobacillus salivarius ssp. salivarius ZDY162a against Fusarium.

Objective To study the antagonism and mechanism of Lactobacillus Salivarius ssp.salivarius ZDY162a against mytoxin-producing Fusarium.Method Fusarium graminearum and Fusarium oxysporum were adopted as the indicator strains to test the inhibition effect of metabolites of L.salivarius ssp.salivarius ZDY162a on spore germination,spore growth and mycelium growth.Result 10% of the spent culture supernatant(SCS) of L.salivarius ssp.salivarius ZDY162a could inhibit the spores germination of Fusarium graminearum by 83% and Fusarium oxysporum by 50%,respectively.The SCS inhibited remarkably the growth of spores in 24 h and that of mycelia of Fusarium in 96 h.Conclusion Some organic acids produced by L.salivarius ssp.salivarius ZDY162a were probably playing an primarily role in inhibiting the growth of Fusarium graminearum and Fusarium oxysporum.