PCR with locus-specific primers of the total DNA of L. pentosus strains used in this study showing the 641-bp amplicon corresponding to the LPENT_00013 gene in L. pentosus IG1. Lane 1, ϕX174 DNA-HaeIII digestion (New England BioLabs, L'Hospitalet de Llobregat, Barcelona, Spain) was used as molecular weight marker; lane 2, L. pentosus IG1 as a positive control; lane 3, Escherichia coli DH5α as a negative control; lane 4, L. pentosus Lp2; lane 5, L. pentosus Lp13; lane 6, L. pentosus Lp43; lane 7, L. pentosus Lp57; lane 8, L. pentosus Lp209; lane 9, L. pentosus Lp13B4.