Genomic insights into antibiotic resistance and mobilome of lactic acid bacteria and bifidobacteria.

Autor:	Rozman V; University of Ljubljana, Biotechnical Faculty, Department of Animal Science, Institute of Dairy Science and Probiotics, Domžale, Slovenia vita.rozman@bf.uni-lj.si., Mohar Lorbeg P; University of Ljubljana, Biotechnical Faculty, Department of Animal Science, Institute of Dairy Science and Probiotics, Domžale, Slovenia., Treven P; University of Ljubljana, Biotechnical Faculty, Department of Animal Science, Institute of Dairy Science and Probiotics, Domžale, Slovenia., Accetto T; University of Ljubljana, Biotechnical Faculty, Department of Microbiology, Chair of Microbial Diversity, Microbiomics and Biotechnology, Ljubljana, Slovenia., Janežič S; National Laboratory of Health, Environment and Food, Maribor, Slovenia.; University of Maribor, Faculty of Medicine, Maribor, Slovenia., Rupnik M; National Laboratory of Health, Environment and Food, Maribor, Slovenia.; University of Maribor, Faculty of Medicine, Maribor, Slovenia., Bogovič Matijašić B; University of Ljubljana, Biotechnical Faculty, Department of Animal Science, Institute of Dairy Science and Probiotics, Domžale, Slovenia.
Jazyk:	angličtina
Zdroj:	Life science alliance [Life Sci Alliance] 2023 Feb 13; Vol. 6 (4). Date of Electronic Publication: 2023 Feb 13 (Print Publication: 2023).
DOI:	10.26508/lsa.202201637
Abstrakt:	Lactic acid bacteria (LAB) and Bifidobacterium sp. (bifidobacteria) can carry antimicrobial resistance genes (ARGs), yet data on resistance mechanisms in these bacteria are limited. The aim of our study was to identify the underlying genetic mechanisms of phenotypic resistance in 103 LAB and bifidobacteria using whole-genome sequencing. Sequencing data not only confirmed the presence of 36 acquired ARGs in genomes of 18 strains, but also revealed wide dissemination of intrinsic ARGs. The presence of acquired ARGs on known and novel mobile genetic elements raises the possibility of their horizontal spread. In addition, our data suggest that mutations may be a common mechanism of resistance. Several novel candidate resistance mechanisms were uncovered, providing a basis for further in vitro studies. Overall, 1,314 minimum inhibitory concentrations matched with genotypes in 92.4% of the cases; however, prediction of phenotype based on genotypic data was only partially efficient, especially with respect to aminoglycosides and chloramphenicol. Our study sheds light on resistance mechanisms and their transferability potential in LAB and bifidobacteria, which will be useful for risk assessment analysis. (© 2023 Rozman et al.)
Databáze:	MEDLINE
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