Abstract
Genomes of 21 strains of lactic acid bacteria isolated from Slovakian traditional cheeses were sequenced on an Illumina MiSeq platform. Subsequently, they were analysed regarding taxonomic classification, presence of genes encoding defence systems, antibiotic resistance and production of biogenic amines. Thirteen strains were found to carry genes encoding at least one bacteriocin, 18 carried genes encoding at least one restriction-modification system, all strains carried 1-6 prophages and 9 strains had CRISPR-Cas systems. CRISPR-Cas type II-A was the most common, containing 0-24 spacers. Only 10% spacers were found to be homological to known bacteriophage or plasmid sequences in databases. Two Enterococcus faecium strains and a Lactococcus lactis strain carried antibiotic resistance genes. Genes encoding for ornithine decarboxylase were detected in four strains and genes encoding for agmatine deiminase were detected in four strains. Lactobacillus paraplantarum 251 L appeared to be the most interesting strain, as it contained genes encoding for two bacteriocins, a restriction-modification system, two CRISPR-Cas systems, four prophages and no genes connected with antibiotic resistance or production of biogenic amines.
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