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Antibiotic-Resistant Desulfovibrio Produces H2S from Supplements for Animal Farming
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Sulphate-reducing bacteria, primarily Desulfovibrio, are responsible for the active generation of H2S in swine production waste. The model species for sulphate reduction studies, Desulfovibrio vulgaris strain L2, was previously isolated from swine manure characterized by high rates of dissimilatory sulphate reduction. The source of electron acceptors in low-sulphate swine waste for the high rate of H2S formation remains uncertain. Here, we demonstrate the ability of the L2 strain to use common animal farming supplements including L-lysine-sulphate, gypsum and gypsum plasterboards as electron acceptors for H2S production. Genome sequencing of strain L2 revealed the presence of two megaplasmids and predicted resistance to various antimicrobials and mercury, which was confirmed in physiological experiments. Most of antibiotic resistance genes (ARG) are carried by two class 1 integrons located on the chromosome and on the plasmid pDsulf-L2-2. These ARGs, predicted to confer resistance to beta-lactams, aminoglycosides, lincosamides, sulphonamides, chloramphenicol and tetracycline, were probably laterally acquired from various Gammaproteobacteria and Firmicutes. Resistance to mercury is likely enabled by two mer operons also located on the chromosome and on pDsulf-L2-2 and acquired via horizontal gene transfer. The second megaplasmid, pDsulf-L2-1, encoded nitrogenase, catalase and type III secretion system suggesting close contact of the strain with intestinal cells in the swine gut. The location of ARGs on mobile elements allows us to consider D. vulgaris strain L2 as a possible vector transferring antimicrobials resistance determinants between the gut microbiote and microbial communities in environmental biotopes.
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“The identification of mobile antimicrobial resistance genes and their potential impact on intestinal resistance also requires whole-genome sequencing and detailed characterization of antibiotic resistance genes [42,66,67,68].”
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Cited by
Current Concepts in Probiotic Safety and Efficacy
Churin, A. A., Sokolyanskaya, L. O., Lukina, A. P., & Karnachuk, O. V. (2026) · Nutrients · doi:10.3390/nu18040696 · Cited by 31
“The identification of mobile antimicrobial resistance genes and their potential impact on intestinal resistance also requires whole-genome sequencing and detailed characterization of antibiotic resistance genes [42,66–68].”
Self-citation
Metadata
- Authors
- Karnachuk, O. V., Beletsky, A. V., Rakitin, A. L., Ikkert, O. P., Avakyan, M. R., Zyusman, V. S., Napilov, A., Mardanov, A. V., & Ravin, N. V.
- Affiliations
- National Research Tomsk State University (RU)
- Russian Academy of Sciences (RU)
- Corresponding author
- Karnachuk, Olga V.
- ORCID
- Venue
- Microorganisms
- Publisher
- MDPI AG
- Published
- 2023-03-25
- Volume
- 11
- Issue
- 4
- Pages
- 838
- ISSN
- 2076-2607 (ISSN-L)
- PMC
- PMC10146906
- OpenAlex
- W4361006555
- Cited by
- 13
- References
- 0
- Citations by year
- 2026: 4 · 2025: 4 · 2024: 3 · 2023: 2
- FWCI
- 1.11
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Microorganisms (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Ministry of Science (Agreement № 075-15-2021-1401)
- Topics
- Health Sciences › Medicine › Microbiology (medical) › Antibiotic Resistance in Bacteria
- Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Anaerobic Digestion and Biogas Production
- Keywords
- hydrogen sulfide production, sulfate-reducing bacteria, pig manure, antibiotic resistance genes, class 1 integron, megaplasmid, horizontal gene transfer, mercury resistance, mer operon, gypsum, beta-lactam resistance, aminoglycoside resistance, type III secretion system, nitrogenase, swine gut microbiota
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- Karnachuk, O. V., Beletsky, A. V., Rakitin, A. L., Ikkert, O. P., Avakyan, M. R., Zyusman, V. S., Napilov, A., Mardanov, A. V., & Ravin, N. V. (2023). Antibiotic-Resistant Desulfovibrio Produces H2S from Supplements for Animal Farming. Microorganisms. https://doi.org/10.3390/microorganisms11040838