Characterization and antimicrobial potential of bacteriocin-producing lactic acid bacteria isolated from the gut of <i>Blattella germanica</i>.

ABSTRACT: The gut microbiota of insects plays a crucial role in host nutrition, immune regulation, and disease resistance. As a globally distributed pest, Blattella germanica has adapted to diverse environments and maintains a highly varied diet, making its gut microbiota a largely untapped reservoir of antimicrobial compounds. This study systematically investigated the culturable gut microbiota of Blattella germanica, leading to the isolation of 30 bacterial strains. Morphological characterization and 16S rRNA gene sequence analysis classified these strains into two phyla and eight genera. Among them, six lactic acid bacteria strains were found to produce bacteriocins. Notably, strain X24 exhibited the strongest antibacterial activity, particularly against Escherichia coli. The

SUBMITTER: Wei Y 

PROVIDER: S-EPMC12584616 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature