PCR-mediated site-directed mutagenesis on PedB gene and HaeIII restriction as a rapid tool for discrimination among pediocin AcH/PA-1 producer strains

Nucleotide sequences of amplified pedB genes from Pediococcus parvulus andLactobacillus plantarum pediocin AcH/PA-1 producer strains were performed. The obtained data were aligned with the published Pediococcus acidilactici pedB sequence, showing a single base substitution in the third codon position of a putative serine. A PCR-mediated site directed mutagenesis on pedB gene, followed by Hae III restriction analysis was then carried out with the aim to rapidly discriminate among pediocin AcH/PA-1 producer strains of different species.