Resumen de Comparative study of the pln locus of the quorum-sensing regulated bacteriocin-producing L. plantarum J51 strain
Laura Navarro, Beatriz Rojo Bezares, Yolanda Sáenz Domínguez, Lorena Díez Aldama, Myriam Zarazaga Chamorro, Fernanda Ruiz Larrea, Carmen Torres Manrique
Lactobacillus plantarum J51 strain was isolated from a Rioja red wine and it showed bacteriocin activity against a wide range of lactic acid bacteria of oenological importance. These characteristics conferred L. plantarum J51 a high interest both in wine microbiology and in the study of bacteriocin production. In this work the bacteriocin production regulated under the �quorum-sensing� mechanism is observed and the pln locus of the bacteriocin-producing L. plantarum J51 is fully characterized. A 20,667 bp fragment was completely sequenced (GenBank accession number DQ340868), and showed five operons (plNC8ßac, plnLR-like, plnABCD, plnEFI, plnGHSTUVW) and a new region containing a putative operon with three new orfs that could encode a putative two-peptide bacteriocin
