Complete genome sequence of Ligilactobacillus agilis LDTM47, bacteriocin-producing lactic acid bacteria isolated from broiler gastrointestinal tract
Received: Jan 14, 2024; Revised: Feb 22, 2024; Accepted: Feb 29, 2024
Published Online: Feb 29, 2024
Abstract
<italic>Ligilactobacillus agilis </italic>LDTM47 was isolated from gastric intestinal tract (ileum and jejunum) samples of broiler chickens from a farm associated with Chung-Ang University (Anseong, Korea). <italic>Ligilactobacillus </italic>are Gram-positive lactobacilli generally associated with the intestinal tracts of vertebrates. Members of lactic acid bacteria are considered to have a generally recognized as safe (GRAS) status from the Food and Drug Administration (FDA). The whole genome of <italic>Lig. agilis </italic>LDTM47 was 2,144,466 base pair long assembled into 1 contig, with 2,131 protein-coding sequences, 90 tRNA genes, 24 rRNA genes, and a guanine + cytosine (GC) content of 41.9%. Strain LDTM47 was selected based on its inhibitory activity against <italic>Listeria monocytogenes</italic> during isolation. The genome analysis of LDTM47 revealed genes encoding the bacteriocin core peptides and associated export proteins. Additionally, the stability (instability index, 1.32) and susceptibility of LDTM47 bacteriocin to hydrolysis by proteolytic enzymes (e.g., pepsin, proteinase K, and trypsin) was confirmed <italic>in silico</italic>, suggesting their non-toxicity and potential use as an alternative to antibiotics in controlling pathogenic microorganisms.