Expression of Lactobacillus pentosus B96 bacteriocin genes under saline stress

► Bacteriocin activity of L. pentosus B96 isolated from table olives and expression of eight bacteriocin genes was studied. ► Adding 4% NaCl significantly increased the maximum gene expression of plsA compared with control conditions. ► The addition of NaCl moved the maximum expression of plsA to the stationary phase. ► Relative expression level of plsA was found to be 1000-fold higher than that of the plnE/F and plnN gene.