which lost the antifungal activity. The fragments conserved in the
wild type but lost in the mutant bacteria was identified to code for the thioredoxin reductase (TrxR) gene.
The gene analysis showed that the TrxR gene from B. licheniformis had the expression of the antagonism to
fungi in a synchronous time evolution with the fungus inhibition when the bacteria were co-cultivated
with the fungi. The collective results indicate the TrxR gene responsible for the antagonism of bacteria
B. licheniformis to fungal infection.