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Nováková D, Koublová V, Sedlář K, Staňková E, Králová S, Švec P, Neumann-Schaal M, Wolf J, Koudelková S, Barták M, Sedláček I. Pseudomonas petrae sp. nov. isolated from regolith samples in Antarctica. Syst Appl Microbiol 2023; 46:126424. [PMID: 37167755 DOI: 10.1016/j.syapm.2023.126424] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 04/06/2023] [Accepted: 04/23/2023] [Indexed: 05/13/2023]
Abstract
A polyphasic taxonomic approach was used to characterize the four strains P2653T, P2652, P2498, and P2647, isolated from Antarctic regolith samples. Initial genotype screening performed by PCR fingerprinting based on repetitive sequences showed that the isolates studied formed a coherent cluster separated from the other Pseudomonas species. Identification results based on 16S rRNA gene sequences showed the highest sequence similarity with Pseudomonas graminis (99.7%), which was confirmed by multilocus sequence analysis using the rpoB, rpoD, and gyrB genes. Genome sequence comparison of P2653T with the most related P. graminis type strain DSM 11363T revealed an average nucleotide identity of 92.1% and a digital DNA-DNA hybridization value of 46.6%. The major fatty acids for all Antarctic strains were C16:0, Summed Feature 3 (C16:1ω7c/C16:1ω6c) and Summed Feature 8 (C18:1ω7c/C18:1ω6c). The predominant respiratory quinone was Q-9, and the major polar lipids were phosphatidylethanolamine, diphosphatidylglycerol, and phosphatidylglycerol. The regolith strains could be differentiated from related species by the absence of arginine dihydrolase, ornithine and lysine decarboxylase and by negative tyrosine hydrolysis. The results of this polyphasic study allowed the genotypic and phenotypic differentiation of four analysed strains from the closest related species, which confirmed that the strains represent a novel species within the genus Pseudomonas, for which the name Pseudomonas petrae sp. nov. is proposed with P2653T (CCM 8850T = DSM 112068T = LMG 30619T) as the type strain.
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Affiliation(s)
- Dana Nováková
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic.
| | - Vendula Koublová
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Karel Sedlář
- Department of Biomedical Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 12, 616 00 Brno, Czech Republic; Department of Informatics, Ludwig-Maximilians-Universität München, Amalienstraße 17, 803 33 Munich, Germany
| | - Eva Staňková
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Stanislava Králová
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Pavel Švec
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Meina Neumann-Schaal
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures GmbH, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Jacqueline Wolf
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures GmbH, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Sylva Koudelková
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Miloš Barták
- Department of Experimental Biology, Section of Experimental Plant Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Ivo Sedláček
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
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Švec P, Kosina M, Zeman M, Holochová P, Králová S, Němcová E, Micenková L, Urvashi, Gupta V, Sood U, Lal R, Korpole S, Sedláček I. Pseudomonas karstica sp. nov. and Pseudomonas spelaei sp. nov., isolated from calcite moonmilk deposits from caves. Int J Syst Evol Microbiol 2020; 70:5131-5140. [DOI: 10.1099/ijsem.0.004393] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
A taxonomic study of two fluorescent
Pseudomonas
strains (HJ/4T and SJ/9/1T) isolated from calcite moonmilk samples obtained from two caves in the Moravian Karst in the Czech Republic was carried out. Results of initial 16S rRNA gene sequence analysis assigned both strains into the genus
Pseudomonas
and showed
Pseudomonas yamanorum
8H1T as their closest neighbour with 99.8 and 99.7 % 16S rRNA gene similarities to strains HJ/4T and SJ/9/1T, respectively. Subsequent sequence analysis of rpoD, rpoB and gyrB housekeeping genes confirmed the highest similarity of both isolates to
P. yamanorum
8H1T, but phylogeny and sequences similarities implied that they are representatives of two novel species within the genus
Pseudomonas
. Further study comprising whole-genome sequencing followed by average nucleotide identity and digital DNA–DNA hybridization calculations, repetitive sequence-based PCR fingerprinting with the REP and ERIC primers, automated ribotyping with the EcoRI restriction endonuclease, cellular fatty acid analysis, quinone and polar lipid characterization, and extensive biotyping confirmed clear separation of both analysed strains from the remaining
Pseudomonas
species and showed that they represent two novel species within the genus
Pseudomonas
for which the names Pseudomonas karstica sp. nov. (type strain HJ/4T=CCM 7891T=LMG 27930T) and Pseudomonas spelaei sp. nov. (type strain SJ/9/1T=CCM 7893T=LMG 27931T) are suggested.
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Affiliation(s)
- Pavel Švec
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Marcel Kosina
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Michal Zeman
- Department of Experimental Biology, Section of Genetics and Molecular Biology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Pavla Holochová
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Stanislava Králová
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Eva Němcová
- Centre for Cardiovascular Surgery and Transplantation, Pekařská 53, 656 91 Brno, Czech Republic
| | - Lenka Micenková
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Urvashi
- Microbial Type Culture Collection and Gene Bank (MTCC), CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh 160 036, India
| | - Vipin Gupta
- PhiXGen Pvt. Ltd.101, GH-11, Atlantis CGHS Ltd.Sector-47, Gurugram, Haryana-122001, India
| | - Utkarsh Sood
- The Energy and Resources Institute, Lodhi Road New Delhi-110003, India
| | - Rup Lal
- The Energy and Resources Institute, Lodhi Road New Delhi-110003, India
| | - Suresh Korpole
- Microbial Type Culture Collection and Gene Bank (MTCC), CSIR-Institute of Microbial Technology, Sector 39A, Chandigarh 160 036, India
| | - Ivo Sedláček
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
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Nováková D, Švec P, Zeman M, Busse HJ, Mašlaňová I, Pantůček R, Králová S, Krištofová L, Sedláček I. Pseudomonas leptonychotis sp. nov., isolated from Weddell seals in Antarctica. Int J Syst Evol Microbiol 2020; 70:302-308. [PMID: 31617844 DOI: 10.1099/ijsem.0.003753] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
A taxonomic study was carried out on four Gram-stain-negative strains P5773T, P6169, P4708 and P6245, isolated from anus or mouth samples of Weddell seals at James Ross Island, Antarctica. The results of initial 16S rRNA gene sequence analysis showed that all four strains formed a group placed in the genus Pseudomonas and found Pseudomonas guineae and Pseudomonas peli to be their closest neighbours with 99.9 and 99.2 % sequence similarity, respectively. Sequence analysis of rpoD, rpoB and gyrB housekeeping genes confirmed the highest similarity of isolates to P. peli (rpoD) and to P. guineae (rpoB and gyrB). The average nucleotide identity value below 86 %, as calculated from the whole-genome sequence data, showed the low genomic relatedness of P5773T to its phylogenetic neighbours. The complete genome of strain P5773T was 4.4 Mb long and contained genes encoding proteins with biotechnological potential. The major fatty acids of the seal isolates were summed feature 8 (C18 : 1 ω7c), summed feature 3 (C16 : 1 ω 7 c/C16 : 1 ω6c) and C16:0. The major respiratory quinone was Q9. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol. Putrescine and spermidine are predominant in the polyamine pattern. Further characterization performed using repetitive sequence-based PCR fingerprinting and MALDI-TOF MS analysis showed that the studied isolates formed a coherent cluster separated from the remaining Pseudomonas species and confirmed that they represent a novel species within the genus Pseudomonas, for which the name Pseudomonas leptonychotis sp. nov. is suggested. The type strain is P5773T (=CCM 8849T=LMG 30618T).
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Affiliation(s)
- Dana Nováková
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Pavel Švec
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Michal Zeman
- Section of Genetics and Molecular Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Hans-Jürgen Busse
- Institute of Microbiology, University of Veterinary Medicine Vienna, A-1210 Vienna, Austria
| | - Ivana Mašlaňová
- Section of Genetics and Molecular Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Roman Pantůček
- Section of Genetics and Molecular Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Stanislava Králová
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Lucie Krištofová
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Ivo Sedláček
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
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Manga I, Hasman H, Smidkova J, Medvecky M, Dolejska M, Cizek A. Fecal Carriage and Whole-Genome Sequencing-Assisted Characterization of CMY-2 Beta-Lactamase-Producing Escherichia coli in Calves at Czech Dairy Cow Farm. Foodborne Pathog Dis 2019; 16:42-53. [PMID: 30673354 DOI: 10.1089/fpd.2018.2531] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
The study aimed to monitor the fecal shedding of cefotaxime-resistant Escherichia coli (CREC) in a cohort of healthy calves on a dairy farm with documented antimicrobial usage and to characterize selected AmpC beta-lactamase-producing E. coli isolates. Fecal samples from 13 suckling calves (1-63 d of age; 113 samples in total) were repeatedly collected and cultivated on MacConkey agar with cefotaxime (2 mg/L). Resistant colonies were counted, and one colony obtained from the highest dilution of each fecal sample was identified by matrix-assisted laser desorption-ionization time-of-flight mass spectrometry. Susceptibility to antimicrobials and production of AmpC and extended-spectrum beta-lactamase (ESBL) were tested. No ESBL-producing E. coli was found, but representative AmpC-positive E. coli isolates were subjected to further typing and whole-genome sequencing (WGS) for the analysis of clonal relationships, resistance genes, virulence factors, and plasmid replicons. High amounts of CREC were detected in the feces of all 13 calves during the study. The number of CREC colonies varied from 1.0 log10 to 8.0 log10 colony-forming unit per gram. Drops in CREC density or its discontinued shedding were recorded at the end of the study period. A total of 82 (94%, n = 87) CREC isolates were confirmed as AmpC producers and all but one showed resistance to multiple antimicrobials. Twenty-nine selected AmpC-positive E. coli isolates belonged to 12 and 13 unique rep-PCR fingerprints and pulsed-field gel electrophoresis types, respectively, highlighting the variation in E. coli genotypes in individual calves. WGS of 10 selected isolates showed diverse antimicrobial resistance and virulence gene content and the presence of a blaCMY-2 gene carried by an IncK2 plasmid. Clinically important multiresistant E. coli isolates belonging to emerging extraintestinal pathogenic E. coli ST69 and ST648 lineages were found. Our findings reinforce the urgency of efforts to prevent the spread of ESBL-/AmpC-producing bacteria in dairy cow farms.
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Affiliation(s)
- Ivan Manga
- 1 Faculty of Veterinary Medicine, Institute of Infectious Diseases and Microbiology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic.,2 CEITEC VFU Brno, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
| | - Henrik Hasman
- 3 Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark
| | - Jana Smidkova
- 1 Faculty of Veterinary Medicine, Institute of Infectious Diseases and Microbiology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic.,4 Faculty of Veterinary Medicine, Ruminant and Swine Clinic, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
| | - Matej Medvecky
- 2 CEITEC VFU Brno, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
| | - Monika Dolejska
- 2 CEITEC VFU Brno, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
| | - Alois Cizek
- 1 Faculty of Veterinary Medicine, Institute of Infectious Diseases and Microbiology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic.,2 CEITEC VFU Brno, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
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5
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Králová S, Busse HJ, Švec P, Mašlaňová I, Staňková E, Barták M, Sedláček I. Flavobacterium circumlabens sp. nov. and Flavobacterium cupreum sp. nov., two psychrotrophic species isolated from Antarctic environmental samples. Syst Appl Microbiol 2019; 42:291-301. [DOI: 10.1016/j.syapm.2018.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 12/02/2018] [Accepted: 12/14/2018] [Indexed: 10/27/2022]
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6
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Králová S, Švec P, Busse HJ, Staňková E, Váczi P, Sedláček I. Flavobacterium chryseum sp. nov. and Flavobacterium psychroterrae sp. nov., novel environmental bacteria isolated from Antarctica. Int J Syst Evol Microbiol 2018; 68:3132-3139. [PMID: 30095387 DOI: 10.1099/ijsem.0.002952] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
A group of rod-shaped, aerobic, Gram-stain-negative, gliding bacteria producing flexirubin-type pigment was isolated from environmental samples collected in Antarctica in 2009-2014. Phylogenetic analysis of the almost complete 16S rRNA gene sequences revealed two separated branches belonging to the genus Flavobacterium. Group I (n=8), represented by strain CCM 8826T, shared the highest sequence similarity to Flavobacterium collinsii 983-08T (98.8 %) and Flavobacterium saccharophilum DSM 1811T (98.4 %), and group II (n=4) represented by strain CCM 8827T shared the highest similarity to Flavobacterium aquidurense WB 1.1-56T (99.6 %). High genetic homogeneity of both groups, separation from each other and from phylogenetically close Flavobacterium species was verified by the rep-PCR fingerprinting method. DNA-DNA hybridization confirmed low genomic relatedness between strain CCM 8826T and F. collinsii 983-08T and F. saccharophilum DSM 1811T (18 and 28 %, respectively) and between strain CCM 8827T and F. aquidurense WB 1.1-56T (27 %). Chemotaxonomic analyses of strains CCM 8826T and CCM 8827T revealed the respiratory quinone to be MK-6, the major identified polar lipid was phosphatidylethanolamine and the predominant polyamine was sym-homospermidine. The common major fatty acids were C15 : 0 iso, C17 : 0 iso 3OH, C15 : 1 iso G, Summed Feature 3 (C16 : 1ω7c/C16 : 1ω6c), C15 : 0 iso 3OH and additionally, C15 : 0 anteiso among group II members. All analyses confirmed that strains of group I and II represent two novel species of the genus Flavobacterium, for which the names Flavobacterium chryseum sp. nov. (type strain CCM 8826T=P3160T=LMG 30615T) and Flavobacterium psychroterrae sp. nov. (type strain CCM 8827T=P3922T=LMG 30616T) are proposed.
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Affiliation(s)
- Stanislava Králová
- 1Czech Collection of Microorganisms, Department of Experimental Biology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Pavel Švec
- 1Czech Collection of Microorganisms, Department of Experimental Biology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Hans-Jürgen Busse
- 2Institut für Mikrobiologie, Veterinärmedizinische Universität Wien, A-1210 Vienna, Austria
| | - Eva Staňková
- 1Czech Collection of Microorganisms, Department of Experimental Biology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Peter Váczi
- 3Section of Plant Physiology and Anatomy, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Ivo Sedláček
- 1Czech Collection of Microorganisms, Department of Experimental Biology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
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Grillová L, Sedláček I, Páchníková G, Staňková E, Švec P, Holochová P, Micenková L, Bosák J, Slaninová I, Šmajs D. Characterization of four Escherichia albertii isolates collected from animals living in Antarctica and Patagonia. J Vet Med Sci 2017; 80:138-146. [PMID: 29249728 PMCID: PMC5797873 DOI: 10.1292/jvms.17-0492] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Escherichia albertii is a recently discovered species with a limited number of well characterized strains. The aim of this study was to characterize four of the E. albertii strains, which were among 41 identified Escherichia strains isolated from the feces of living animals on James Ross Island, Antarctica, and Isla Magdalena, Patagonia. Sequencing of 16S rDNA, automated ribotyping, and rep-PCR were used to identify the four E. albertii isolates. Phylogenetic analyses based on multi-locus sequence typing showed these isolates to be genetically most similar to the members of E. albertii phylogroup G3. These isolates encoded several virulence factors including those, which are characteristic of E. albertii (cytolethal distending toxin and intimin) as well as bacteriocin determinants that typically have a very low prevalence in E. coli strains (D, E7). Moreover, E. albertii protein extracts caused cell cycle arrest in human cell line A375, probably because of cytolethal distending toxin activity.
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Affiliation(s)
- Linda Grillová
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00, Brno, Czech Republic
| | - Ivo Sedláček
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00, Brno, Czech Republic
| | - Gabriela Páchníková
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00, Brno, Czech Republic
| | - Eva Staňková
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00, Brno, Czech Republic
| | - Pavel Švec
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00, Brno, Czech Republic
| | - Pavla Holochová
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, 625 00, Brno, Czech Republic
| | - Lenka Micenková
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, 625 00, Brno, Czech Republic
| | - Juraj Bosák
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00, Brno, Czech Republic
| | - Iva Slaninová
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00, Brno, Czech Republic
| | - David Šmajs
- Department of Biology, Faculty of Medicine, Masaryk University, 625 00, Brno, Czech Republic
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Švec P, Králová S, Busse HJ, Kleinhagauer T, Pantůček R, Mašlaňová I, Cnockaert M, Vandamme P, Staňková E, Gelbíčová T, Holochová P, Barták M, Kýrová K, Sedláček I. Pedobacter jamesrossensis sp. nov., Pedobacter lithocola sp. nov., Pedobacter mendelii sp. nov. and Pedobacter petrophilus sp. nov., isolated from the Antarctic environment. Int J Syst Evol Microbiol 2017; 67:1499-1507. [PMID: 27995868 DOI: 10.1099/ijsem.0.001749] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A taxonomic study performed on 17 Gram-stain-negative rod-shaped bacterial strains originating from the Antarctic environment is described. Initial phylogenetic analysis using 16S rRNA gene sequencing differentiated the strains into four groups belonging to the genus Pedobacter but they were separated from all hitherto described Pedobacter species. Group I (n=8) was closest to Pedobacter aquatilis (97.8 % 16S rRNA gene sequence similarity). Group II (n=2) and group III (n=4) were closely related (98.8 % 16S rRNA gene sequence similarity) and had Pedobacter jejuensis as their common nearest neighbour. Group IV (n=3) was distantly delineated from the remaining Pedobacter species. Differentiation of the analysed strains into four clusters was further confirmed by repetitive sequence-based PCR fingerprinting, ribotyping, DNA-DNA hybridization and phenotypic traits. Common to representative strains for the four groups were the presence of major menaquinone MK-7, sym-homospermidine as the major polyamine, phosphatidylethanolamine, two unidentified lipids (L2, L5) and an unidentified aminolipid (AL2) as the major polar lipids, presence of an alkali-stable lipid, and C16:1ω7c/C16:1ω6c (summed feature 3), iso-C15:0 and iso-C 17:0 3-OH as the major fatty acids, which corresponded to characteristics of the genus Pedobacter. The obtained results showed that the strains analysed represent four novel species of the genus Pedobacter, for which the names Pedobacter jamesrossensis sp. nov. (type strain CCM 8689T=LMG 29684T), Pedobacter lithocola sp. nov. (CCM 8691T=LMG 29685T), Pedobacter mendelii sp. nov. (CCM 8685T=LMG 29688T) and Pedobacter petrophilus sp. nov. (CCM 8687T=LMG 29686T) are proposed.
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Affiliation(s)
- Pavel Švec
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Stanislava Králová
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Hans-Jürgen Busse
- Institute of Microbiology, University of Veterinary Medicine Vienna, A-1210 Vienna, Austria
| | - Tanita Kleinhagauer
- Institute of Microbiology, University of Veterinary Medicine Vienna, A-1210 Vienna, Austria
| | - Roman Pantůček
- Section of Genetics and Molecular Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Ivana Mašlaňová
- Section of Genetics and Molecular Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Margo Cnockaert
- Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, K.L. Ledeganckstraat 35, 9000 Ghent, Belgium
| | - Peter Vandamme
- Department of Biochemistry and Microbiology, Faculty of Sciences, Ghent University, K.L. Ledeganckstraat 35, 9000 Ghent, Belgium
| | - Eva Staňková
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Tereza Gelbíčová
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Pavla Holochová
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Miloš Barták
- Section of Physiology and Anatomy of Plants, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Kamila Kýrová
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
| | - Ivo Sedláček
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic
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9
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Švec P, Petráš P, Pantůček R, Doškař J, Sedláček I. High intraspecies heterogeneity within Staphylococcus sciuri and rejection of its classification into S. sciuri subsp. sciuri, S. sciuri subsp. carnaticus and S. sciuri subsp. rodentium. Int J Syst Evol Microbiol 2016; 66:5181-5186. [DOI: 10.1099/ijsem.0.001493] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Pavel Švec
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, Bld. A25, 625 00 Brno, Czech Republic
| | - Petr Petráš
- Reference Laboratory for Staphylococci, National Institute of Public Health, Šrobárova 48, 100 42 Prague 10, Czech Republic
| | - Roman Pantůček
- Division of Genetics and Molecular Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Jiří Doškař
- Division of Genetics and Molecular Biology, Department of Experimental Biology, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Ivo Sedláček
- Department of Experimental Biology, Czech Collection of Microorganisms, Faculty of Science, Masaryk University, Kamenice 5, Bld. A25, 625 00 Brno, Czech Republic
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10
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Králová S, Staňková E, Sedláček I. Classification of Aeromonas spp. isolated from water and clinical sources and distribution of virulence genes. Folia Microbiol (Praha) 2016; 61:513-521. [DOI: 10.1007/s12223-016-0464-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 06/22/2016] [Indexed: 11/29/2022]
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11
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TRS-PCR profiling for discrimination of Escherichia coli strains isolated from children with diarrhea under 5 years of age in Lodz region, Poland. Mol Biol Rep 2016; 43:871-80. [PMID: 27389591 PMCID: PMC4990611 DOI: 10.1007/s11033-016-4031-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 06/20/2016] [Indexed: 11/17/2022]
Abstract
Escherichia coli is one of the most frequently isolated gram-negative pathogens in cases of foodborne diseases and hospital infections. What is more, diarrheal diseases, including these associated with pathogenic E. coli strains, are leading causes of morbidity and mortality worldwide, especially among children. Improvements of the management of diarrheal diseases caused by these bacteria are in the spotlight of the World Health Organization. Therefore, there is still a need to develop new methods or improve ones that are commonly used to characterize and distinguish E. coli strains more precisely. In this work, TRS-based PCRs were effectively used for discrimination of 123 E. coli strains isolated from children with diarrhea in the Lodz region (Poland). The composite TRS-PCR approach, based on similarity comparisons of GTG-PCR and CGG-PCR fingerprints, enabled us to distinguish strains with very good efficacy. This was confirmed by the high diversity index (0.991) and high reproducibility of the band patterns obtained (95.0 %). These results showed the great variation in strains that may cause infections in children under 38 months. However, the stains were grouped in three separate clusters, which were different in terms of their phylogenetic affiliation and virulence factor repertoire. The obtained results support and are consistent with the need of public health surveillance for searching new and fast assays as far as children’s health is concerned. TRS-PCR profiling is an effective tool for genotyping of E. coli strains isolated from children with diarrhea.
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12
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Selection of enhanced antimicrobial activity posing lactic acid bacteria characterised by (GTG)5-PCR fingerprinting. Journal of Food Science and Technology 2015; 52:4124-34. [PMID: 26139877 DOI: 10.1007/s13197-014-1512-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/01/2014] [Accepted: 08/05/2014] [Indexed: 10/24/2022]
Abstract
The aim of the study was a detail evaluation of genetic diversity among the lactic acid bacteria (LAB) strains having an advantage of a starter culture in order to select genotypically diverse strains with enhanced antimicrobial effect on some harmfull and pathogenic microorganisms. Antimicrobial activity of LAB was performed by the agar well diffusion method and was examined against the reference strains and foodborne isolates of Bacillus cereus, Listeria monocytogenes, Escherichia coli, Staphylococcus aureus and Salmonella Typhimurium. Antifungal activity was tested against the foodborne isolates of Candida parapsilosis, Debaromyces hansenii, Kluyveromyces marxianus, Pichia guilliermondii, Yarowia lipolytica, Aspergillus brasiliensis, Aspergillus versicolor, Cladosporium herbarum, Penicillium chrysogenum and Scopulariopsis brevicaulis. A total 40 LAB strains representing Lactobacillus (23 strains), Lactococcus (13 strains) and Streptococcus spp. (4 strains) were characterised by repetitive sequence based polymerase chain reaction fingerprinting which generated highly discriminatory profiles, confirmed the identity and revealed high genotypic heterogeneity among the strains. Many of tested LAB demonstrated strong antimicrobial activity specialised against one or few indicator strains. Twelve LAB strains were superior in suppressing growth of the whole complex of pathogenic bacteria and fungi. These results demonstrated that separate taxonomic units offered different possibilities of selection for novel LAB strains could be used as starter cultures enhancing food preservation.
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13
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Manga I, Klimešová M, Horáček J, Koláčková I, Bjelková M, Ponížil A, Nejeschlebová L. Rep-PCR typing of Staphylococcus spp. strains in meat paste production line and identification of their origin. POTRAVINARSTVO 2015. [DOI: 10.5219/465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A meat paste production line and its microbial parameters have been evaluated in single Czech company. The raw meat paste samples before heat treatment were tested positively for the presence of three staphylococci species: Staphylococcus aureus, Staphylococcus haemolyticus and Staphylococcus epidermidis. Subsequent microbial analysis of meat paste components and ingredients (fresh meat, water, spices, equipment) identified only the spices used as positive for S. aureus (coriander, cinnamon, badian, mustard – (10 - 40 cfu/g)) and S. haemolyticus strains (juniper, ginger). The collection of sixteen collected strains (S. aureus (n = 4), S. haemolyticus (n = 4), S. epidermidis (n = 8)) has been typed with the rep-PCR method utilising (GTG)5 primer. Analysis of the fingerprints using the unweighted pair-group method using arithmetic averages (UPGMA) clustering method revealed presence of eleven strain clusters with similarity lower than 90%: two fingerprint clusters of S. aureus, three individual clusters characteristic for S. haemolyticus and six different S. epidermidis specific clusters. The S. aureus strains from different types of spice were identical, resp. very similar. Molecular tracking composed from the rep-PCR analysis of acquired isolates and comparison among all collected fingerprints confirmed the spices to be the source of both S. aureus and S. haemolyticus strains identified in raw meat paste. The additional rep-PCR analysis of the S. epidermidis collection confirmed usability and performance of this method. The antibiotic susceptibility to fourteen individual antibiotics has been examined among the collected staphylococci strains. The predominant erythromycin resistance (68.8%) was followed with the resistance to amoxicillin/clavulanic acid (56.2%). Other resistances observed were less frequent (clindamycin – 12.5%, oxacillin – 6.3%, tetracycline – 6.3%, sulphamethoxazole-trimethoprim – 6.3%, chloramphenicol – 6.3%, novobiocin – 6.3%). As shown by our experimental results, rep-PCR with the (GTG)5 primer is an applicable tool for typing of bacterial strains and may be used for identifying the source of contamination.
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14
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Prevalence, diversity and characterization of enterococci from three coraciiform birds. Antonie van Leeuwenhoek 2015; 107:1281-9. [DOI: 10.1007/s10482-015-0422-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 03/02/2015] [Indexed: 10/23/2022]
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15
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Majchrzak M, Krzyzanowska A, Kubiak AB, Wojtasik A, Wolkowicz T, Szych J, Parniewski P. TRS-based PCR as a potential tool for inter-serovar discrimination of Salmonella Enteritidis, S. Typhimurium, S. Infantis, S. Virchow, S. Hadar, S. Newport and S. Anatum. Mol Biol Rep 2014; 41:7121-32. [PMID: 25063578 PMCID: PMC4204001 DOI: 10.1007/s11033-014-3592-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 07/07/2014] [Indexed: 10/31/2022]
Abstract
Salmonella enterica subsp. enterica comprises a number of serovars, many of which pose an epidemiological threat to humans and are a worldwide cause of morbidity and mortality. Most reported food infection outbreaks involve the serovars Salmonella Enteritidis and Salmonella Typhimurium. Rapid identification to determine the primary sources of the bacterial contamination is important to the improvement of public health. In recent years, many DNA-based techniques have been applied to genotype Salmonella. Herein, we report the use of a manual TRS-PCR approach for the differentiation of the Salmonella enterica subspecies enterica serovars in a single-tube assay. One hundred seventy Salmonella strains were examined in this work. These consisted of serovars S. Enteritidis, S. Typhimurium, S. Infantis, S. Virchow, S. Hadar, S. Newport and S. Anatum. Five of the TRS-primers, N6(GTG)4, N6(CAC)4, N6(CGG)4, N6(CCG)4 and N6(CTG)4, perfectly distinguished the S. Enteritidis and S. Typhimurium serovars, and the N6(GTG)4 primer additionally grouped the other five frequently isolated serovars. In our opinion, the TRS-PCR methodology could be recommended for a quick and simple DNA-based test for inter-serovar discrimination of Salmonella strains.
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Affiliation(s)
- Marta Majchrzak
- Institute of Medical Biology PAS, 106 Lodowa Street, 93-232 Lodz, Poland
| | - Anna Krzyzanowska
- Institute of Medical Biology PAS, 106 Lodowa Street, 93-232 Lodz, Poland
| | - Anna B. Kubiak
- Institute of Medical Biology PAS, 106 Lodowa Street, 93-232 Lodz, Poland
| | - Arkadiusz Wojtasik
- Institute of Medical Biology PAS, 106 Lodowa Street, 93-232 Lodz, Poland
| | - Tomasz Wolkowicz
- Department of Bacteriology, National Institute of Public Health - National Institute of Hygiene, 24 Chocimska Street, 00-791 Warsaw, Poland
| | - Jolanta Szych
- Department of Bacteriology, National Institute of Public Health - National Institute of Hygiene, 24 Chocimska Street, 00-791 Warsaw, Poland
| | - Pawel Parniewski
- Institute of Medical Biology PAS, 106 Lodowa Street, 93-232 Lodz, Poland
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16
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Vagococcus entomophilus sp. nov., from the digestive tract of a wasp (Vespula vulgaris). Int J Syst Evol Microbiol 2014; 64:731-737. [DOI: 10.1099/ijs.0.054940-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Three unknown Gram-stain-positive, catalase-negative, facultatively anaerobic and coccus-shaped strains of bacteria were isolated from the digestive tracts of wasps (Vespula vulgaris). Analysis of 16S rRNA gene sequences revealed that these strains had identical sequences and showed that
Vagococcus salmoninarum
, with 96.2 % sequence similarity, was the closest phylogenetic neighbour. Further analyses based on hsp60 and pheS gene sequences of representatives of the family Enteroccocaceae and genotypic and phenotypic characterization using (GTG)5-PCR fingerprintings, EcoRI ribotyping, DNA G+C content, whole-cell protein profiling, cellular fatty acid profiles analysis and extensive biotyping confirmed that the investigated strains were representatives of a novel bacterial species within the genus Vagoccocus for which the name Vagoccocus entomophilus sp. nov. is proposed. The type strain is VOSTP2T ( = DSM 24756T = CCM 7946T).
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17
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Lactobacillus apis sp. nov., from the stomach of honeybees (Apis mellifera), having an in vitro inhibitory effect on the causative agents of American and European foulbrood. Int J Syst Evol Microbiol 2014; 64:152-157. [DOI: 10.1099/ijs.0.053033-0] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A taxonomic study was performed on Gram-stain-positive, catalase-negative and regular rod-shaped bacterial strains R4BT and R4C, isolated from the stomachs of honeybees. 16S rRNA gene sequence analysis revealed that the phylogenetic position of the novel strains was within the genus
Lactobacillus
; the highest sequence similarity to R4BT was shown by
Lactobacillus acidophilus
BCRC 10695T (93.6 %). Lower sequence similarities were found to other obligately homofermentative lactobacilli. A PCR–DGGE method could detect the sequence of the 16S rRNA gene of strain R4BT at different developmental stages of honeybees occurring in two different locations in the Czech Republic. The distinctiveness of the strains from other lactobacilli was also confirmed by analysis of sequences of other phylogenetic markers applicable to the taxonomy of the genus
Lactobacillus
, ribotyping and rep-PCR analysis. The DNA G+C content of strain R4BT was 41.3 mol%. The predominant cellular fatty acids of strain R4BT were C18 : 1ω9c, summed C19 : 1ω6c/C19 : 0 cyclo ω10c, C16 : 0, summed C18 : 1ω7c/C18 : 1ω6c and summed C16 : 1ω7c/C16 : 1ω6c. The major polar lipids of strain R4BT were glycolipids, lipids and phospholipids. Phenotypic and phylogenetic characteristics also confirmed the independent status of the strains at the species level. Interestingly, strain R4BT was able to inhibit growth in vitro of
Paenibacillus larvae subsp. larvae
(causal agent of American foulbrood in honeybees) and
Melissococcus plutonius
(causal agent of European foulbrood). The name Lactobacillus apis sp. nov. is proposed for this novel taxon; the type strain is R4BT ( = CCM 8403T = LMG 26964T).
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18
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Manga I, Vyletělová M. Rep-PCR-based typing as a tool for tracking of MRSA infection origin. ACTA UNIVERSITATIS AGRICULTURAE ET SILVICULTURAE MENDELIANAE BRUNENSIS 2013. [DOI: 10.11118/actaun201260060251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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19
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Benes J, Dzupova O, Setina M, Feuereisl R, Svec P, Pantucek R. Relapsing endocarditis caused by Enterococcus faecalis forming small colony variants. ACTA ACUST UNITED AC 2013; 45:800-3. [DOI: 10.3109/00365548.2013.800227] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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20
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Evaluation of the strain identity between isolates from caries lesions and root canals in early childhood caries cases. Folia Microbiol (Praha) 2013; 58:649-56. [PMID: 23645503 DOI: 10.1007/s12223-013-0254-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2012] [Accepted: 04/19/2013] [Indexed: 10/26/2022]
Abstract
Early childhood caries (ECC) has become a serious medical problem worldwide in the last decade. Bacterial microflora of the dental plaque and oral cavity is considered an important factor in the formation and progression of dental caries. The aim of this study was strain typing and comparison of bacterial isolates retrieved from caries lesions and root canal contents of the same teeth. In total, 18 pairs of presumptive streptococci and lactobacilli retrieved from dental caries and root canals isolated from ECC-affected children, were selected on the basis of biotyping results and rep-PCR fingerprinting with (GTG)5 primer. Strain typing was further done using the RiboPrinter microbial characterization system (DuPont Qualicon). The automated ribotyping determined 14 pairs of the strains (77.8 %) to be identical. The results obtained confirmed that identical bacterial strains colonized both the decayed dental surface and the necrotic content of the dental pulp cavity during the cariogenesis. Our finding supports the assumption that bacteria could penetrate through the damaged dental surface to the inner parts of the teeth.
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21
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Frolková P, Švec P, Sedláček I, Mašlaňová I, Černohlávková J, Ghosh A, Zurek L, Radiměřský T, Literák I. Enterococcus alcedinis sp. nov., isolated from common kingfisher (Alcedo atthis). Int J Syst Evol Microbiol 2013; 63:3069-3074. [PMID: 23416573 DOI: 10.1099/ijs.0.049833-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two Gram-positive, catalase-negative bacterial strains were isolated from the cloaca of common kingfishers (Alcedo atthis). Repetitive sequence-based PCR fingerprinting using the (GTG)5 primer grouped these isolates into a single cluster separated from all known enterococcal species. The two strains revealed identical 16S rRNA gene sequences placing them within the genus Enterococcus with Enterococcus aquimarinus LMG 16607(T) as the closest relative (97.14 % similarity). Further taxonomic investigation using sequencing of the genes for the superoxide dismutase (sodA), phenylalanyl-tRNA synthase alpha subunit (pheS) and the RNA polymerase alpha subunit (rpoA) as well as application of whole-cell protein fingerprinting, automated ribotyping and extensive phenotyping confirmed that both strains belong to the same species. Based on data from this polyphasic study, these strains represent a novel species of the genus Enterococcus, for which the name Enterococcus alcedinis sp. nov. is proposed. The type strain is L34(T) (= CCM 8433(T) = LMG 27164(T)).
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Affiliation(s)
- Petra Frolková
- Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences, Palackého 1-3, 612 42 Brno, Czech Republic
| | - Pavel Švec
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Tvrdého 14, 602 00 Brno, Czech Republic
| | - Ivo Sedláček
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Tvrdého 14, 602 00 Brno, Czech Republic
| | - Ivana Mašlaňová
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Tvrdého 14, 602 00 Brno, Czech Republic
| | - Jitka Černohlávková
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Tvrdého 14, 602 00 Brno, Czech Republic
| | - Anuradha Ghosh
- Department of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA
| | - Ludek Zurek
- Department of Diagnostic Medicine and Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA
| | - Tomáš Radiměřský
- Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences, Palackého 1-3, 612 42 Brno, Czech Republic
| | - Ivan Literák
- CEITEC VFU, University of Veterinary and Pharmaceutical Sciences, Palackého 1-3, 612 42 Brno, Czech Republic.,Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences, Palackého 1-3, 612 42 Brno, Czech Republic
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22
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Niemi RM, Ollinkangas T, Paulin L, Švec P, Vandamme P, Karkman A, Kosina M, Lindström K. Enterococcus rivorum sp. nov., from water of pristine brooks. Int J Syst Evol Microbiol 2012; 62:2169-2173. [DOI: 10.1099/ijs.0.038257-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A significant number of
Enterococcus
strains from pristine waters of two brooks in Finland formed a distinct cluster on the basis of whole-cell protein fingerprinting by one-dimensional SDS-PAGE. The strains shared the following characteristics. Cells were ovoid, Gram-positive-staining and non-spore-forming, appearing singly or in pairs or chains. They were facultatively anaerobic and catalase-negative. Growth in broth containing 6.5 % NaCl or at 45 °C was weak or absent. Production of D antigen was variable. The strains tolerated 60 °C for 30 min, 40 % bile and tellurite, hydrolysed aesculin strongly and gelatin weakly, produced no acid from hippurate and did not reduce it, grew weakly at 10 °C, showed a strong reaction for the Voges–Proskauer test and produced acid from methyl α-d-glucoside, mannitol, sorbitol and sucrose, with weak or no production of acid from methyl α-d-mannoside, l-arabinose, gluconate and l-xylose. Several of the strains were selected for identification on the basis of sequencing of almost the whole 16S rRNA gene and partial atpA and pheS genes and of (GTG)5-PCR fingerprints. Partial atpA and pheS gene sequencing was also performed for those type strains of
Enterococcus
species without available sequences in the database. The pristine brook isolates formed a novel species, for which the name Enterococcus rivorum sp. nov. (type strain S299T = HAMBI 3055T = LMG 25899T = CCM 7986T) is proposed. On the basis of 16S rRNA gene sequence similarity, E. rivorum sp. nov. is related to the
Enterococcus faecalis
genogoup. It is distinguished from described
Enterococcus
species on the basis of 16S rRNA, atpA and pheS gene sequences and whole-cell protein and (GTG)5-PCR fingerprints. It is most closely related to
E. faecalis
, but DNA–DNA hybridization confirms it to represent a novel species.
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Affiliation(s)
- R. Maarit Niemi
- Finnish Environment Institute, Ecosystem Change, PO Box 140, FI-00251 Helsinki, Finland
| | - Tuula Ollinkangas
- Finnish Environment Institute, Ecosystem Change, PO Box 140, FI-00251 Helsinki, Finland
| | - Lars Paulin
- Institute of Biotechnology, University of Helsinki, PO Box 56, FI-00014 Helsinki, Finland
| | - Pavel Švec
- Masaryk University, Faculty of Science, Department of Experimental Biology, Czech Collection of Microorganisms (CCM), Tvrdého 14, Brno 60200, Czech Republic
| | - Peter Vandamme
- Laboratory of Bacteriology, Ghent University, K. L. Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - Antti Karkman
- Department of Food and Environmental Sciences, Division of Microbiology, University of Helsinki, PO Box 56, FI-00014 Helsinki, Finland
| | - Marcel Kosina
- Masaryk University, Faculty of Science, Department of Experimental Biology, Czech Collection of Microorganisms (CCM), Tvrdého 14, Brno 60200, Czech Republic
| | - Kristina Lindström
- Department of Food and Environmental Sciences, Division of Microbiology, University of Helsinki, PO Box 56, FI-00014 Helsinki, Finland
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Abstract
Eight Gram-positive, catalase-negative bacterial strains were isolated during screening of enterococcal populations on plants. rep-PCR fingerprinting using the (GTG)5 primer showed that the isolates constituted a single cluster that was separate from all known enterococcal species. 16S rRNA gene sequence phylogenetic analysis of three representative strains showed that the isolates belonged to the genus
Enterococcus
and that they clustered with the
Enterococcus faecalis
species group. Sequencing of the genes for the phenylalanyl-tRNA synthase alpha subunit (pheS) and the RNA polymerase alpha subunit (rpoA) also revealed the isolates’ separate taxonomic position. Application of whole-cell protein fingerprinting, automated ribotyping and extensive phenotyping demonstrated the genetic and phenotypic homogeneity of the isolates and confirmed their separate position within the
E. faecalis
species group. The isolates represent a novel species of the genus
Enterococcus
, for which the name Enterococcus plantarum sp. nov. is proposed; the type strain is CCM 7889T ( = LMG 26214T = C27T).
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24
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Sedláček I, Holochová P, Mašlaňová I, Kosina M, Spröer C, Bryndová H, Vandamme P, Rudolf I, Hubálek Z, Švec P. Enterococcus ureilyticus sp. nov. and Enterococcus rotai sp. nov., two urease-producing enterococci from the environment. Int J Syst Evol Microbiol 2012; 63:502-510. [PMID: 22523160 DOI: 10.1099/ijs.0.041152-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A set of 25 urease-producing, yellow-pigmented enterococci was isolated from environmental sources. Phenotypic classification divided the isolates into two phena. Both phena were characterized using 16S rRNA gene sequence analysis, DNA base composition, rep-PCR fingerprinting and automated ribotyping. The obtained data distinguished the isolates from all members of the genus Enterococcus with validly published names and placed them in the Enterococcus faecalis species group. DNA-DNA hybridization experiments, pheS and rpoA sequencing and whole-cell protein electrophoresis provided conclusive evidence for the classification of each phenon as a novel species of the genus Enterococcus, for which the names Enterococcus ureilyticus sp. nov. (type strain CCM 4629(T) = LMG 26676(T) = CCUG 48799(T)), inhabiting water and plants, and Enterococcus rotai sp. nov. (type strain CCM 4630(T) = LMG 26678(T) = CCUG 61593(T)), inhabiting water, insects (mosquitoes) and plants, are proposed.
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Affiliation(s)
- Ivo Sedláček
- Czech Collection of Microorganisms, Department of Experimental Biology, Masaryk University, Tvrdého 14, 602 00 Brno, Czech Republic
| | - Pavla Holochová
- Czech Collection of Microorganisms, Department of Experimental Biology, Masaryk University, Tvrdého 14, 602 00 Brno, Czech Republic
| | - Ivana Mašlaňová
- Czech Collection of Microorganisms, Department of Experimental Biology, Masaryk University, Tvrdého 14, 602 00 Brno, Czech Republic
| | - Marcel Kosina
- Czech Collection of Microorganisms, Department of Experimental Biology, Masaryk University, Tvrdého 14, 602 00 Brno, Czech Republic
| | - Cathrin Spröer
- DSMZ - Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Hana Bryndová
- Czech Collection of Microorganisms, Department of Experimental Biology, Masaryk University, Tvrdého 14, 602 00 Brno, Czech Republic
| | - Peter Vandamme
- Laboratory of Microbiology, Faculty of Sciences, Gent University, B-9000 Gent, Belgium
| | - Ivo Rudolf
- Institute of Vertebrate Biology, Academy of Sciences CR, v.v.i., Květná 8, 603 65 Brno, Czech Republic
| | - Zdenek Hubálek
- Institute of Vertebrate Biology, Academy of Sciences CR, v.v.i., Květná 8, 603 65 Brno, Czech Republic
| | - Pavel Švec
- Czech Collection of Microorganisms, Department of Experimental Biology, Masaryk University, Tvrdého 14, 602 00 Brno, Czech Republic
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25
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Okada T, Takada K, Fujita K, Ikemi T, Osgood RC, Childers NK, Michalek SM. Differentiation of banding patterns between Streptococcus mutans and Streptococcus sobrinus isolates in rep-PCR using ERIC primer. J Oral Microbiol 2011; 3:JOM-3-7190. [PMID: 22145074 PMCID: PMC3230236 DOI: 10.3402/jom.v3i0.7190] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2011] [Revised: 11/09/2011] [Accepted: 11/09/2011] [Indexed: 11/18/2022] Open
Abstract
Background Streptococcus mutans and Streptococcus sobrinus are considered to be important bacterial species in the initiation of human dental caries. Therefore, the establishment of a reliable genotyping method to distinguish S. mutans from S. sobrinus is of central importance. Objective We assessed the usefulness of repetitive extragenic palindromic polymerase chain reaction (rep-PCR) using ERIC primer banding patterns in differentiating S. mutans and S. sobrinus. Design Five S. mutans and two S. sobrinus prototype strains and 50 clinical isolates (38 S. mutans serotype c, 4 S. sobrinus serotype d, and 8 S. sobrinus serotype g) were examined. The banding patterns of amplicons generated were compared among the prototype strains and clinical isolates, to find common bands that distinguish S. mutans and S. sobrinus. Results Multiple banding patterns were seen with all strains tested. The representative strains of S. mutans tested revealed six unique, strong bands at 2,000 bp, 1,700 bp, 1,400 bp, 1,100 bp, 850 bp, and 250 bp, whereas S. sobrinus had seven strong bands at 2,000 bp, 1,800 bp, 1,100 bp, 900 bp, 800 bp, 600 bp, and 550 bp. The band at 1,100 bp was the only band that was observed in both S. mutans and S. sobrinus. Furthermore, most clinical S. mutans isolates revealed identical banding patterns. All S. mutans had amplicons at 1,700 bp, 850 bp, and 250 bp, whereas those of S. sobrinus were at 1,100 bp, 900 bp, and 800 bp. Conclusions These results indicate that using rep-PCR with the ERIC primers can distinguish between S. mutans and S. sobrinus.
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Affiliation(s)
- Tamami Okada
- Department of Operative Dentistry, Nihon University School of Dentistry at Matsudo, Matsudo, Japan
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Gu CT, Wang F, Li CY, Liu F, Huo GC. Leuconostoc mesenteroides subsp. suionicum subsp. nov. Int J Syst Evol Microbiol 2011; 62:1548-1551. [PMID: 21856976 DOI: 10.1099/ijs.0.031203-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Strains LMG 8159 and LMG 11499 were reclassified by a polyphasic approach, including 16S rRNA gene sequence analysis, 16S-23S rRNA intergenic spacer (IGS) sequence analysis, (GTG)(5)-PCR fingerprinting, RAPD fingerprinting, fatty acid methyl ester analysis and an analysis of phenotypic features using API 50 CH. The two strains were closely related to the type strains of the three defined subspecies of Leuconostoc mesenteroides, showing 99.7-99.9% 16S rRNA gene sequence similarity, 99.2% 16S-23S rRNA gene intergenic spacer sequence similarity, 97.1-97.4% pheS gene sequence similarity and 98.0-98.2% rpoA gene sequence similarity. Low atpA gene sequence similarity (91.4-91.7%), (GTG)(5)-PCR fingerprinting, RAPD fingerprinting, fatty acid compositions and phenotypic features allowed us to differentiate strains LMG 8159 and LMG 11499 from all established subspecies within L. mesenteroides. Based upon the data obtained in the present and previous studies, a novel subspecies is proposed within the species L. mesenteroides, Leuconostoc mesenteroides subsp. suionicum subsp. nov., with the type strain LMG 8159(T) (=ATCC 9135(T) =DSM 20241(T) =NCIMB 6992(T)).
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Affiliation(s)
- Chun Tao Gu
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, PR China
| | - Fang Wang
- Key Laboratory of Biodiversity Conservation in Southwest China, State Forestry Administration, Southwest Forestry University, Kunming 650224, PR China.,State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, PR China
| | - Chun Yan Li
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, PR China
| | - Fei Liu
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, PR China
| | - Gui Cheng Huo
- Key Laboratory of Dairy Science, Ministry of Education, Northeast Agricultural University, Harbin 150030, PR China
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Svec P, Sedláček I, Chrápavá M, Vandamme P. (GTG)(5)-PCR fingerprinting of lactobacilli isolated from cervix of healthy women. Folia Microbiol (Praha) 2011; 56:80-3. [PMID: 21390569 DOI: 10.1007/s12223-011-0006-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Accepted: 11/25/2010] [Indexed: 10/18/2022]
Abstract
A group of lactobacilli isolated from the cervix of 31 healthy women was characterized by (GTG)(5)-polymerase chain reaction (PCR) fingerprinting in order to evaluate this method for identification of vaginal lactobacilli. Obtained fingerprints were compared with profiles available in an in-house database of the CCM bacteria collection covering type and reference strains of multiple lactic acid bacteria including lactobacilli. Selected strains representing individual clusters were further identified by pheS gene sequencing. In total, six lactobacillus species were found among lactobacilli isolated from the cervix of healthy women. The (GTG)(5)-PCR method identified Lactobacillus gasseri (11 strains), Lactobacillus fermentum (one), and some of the Lactobacillus jensenii strains (eight out of 11), but failed to identify the remaining strains, including the Lactobacillus crispatus (18), Lactobacillus mucosae (one), and Lactobacillus vaginalis (one) species. L. jensenii strains were distributed over two fingerprint clusters. The majority of samples was dominated by one (GTG)(5)-PCR type. The rep-PCR fingerprinting using the (GTG)(5) primer allowed straightforward identification of many, but not all, isolates. This method has been shown to be a useful tool for fast screening and grouping of vaginal lactobacilli, but its combination with another identification method is needed to obtain reliable identification results. In addition, Lactobacillus acidophilus was not shown to be the most common inhabitant of the female genital tract as generally assumed.
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Affiliation(s)
- P Svec
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Tvrdého 14, 602 00, Brno, Czech Republic.
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Chebeňová V, Berta G, Kuchta T, Brežná B, Pangallo D. Randomly-amplified microsatellite polymorphism for preliminary typing of lactic acid bacteria from Bryndza Cheese. Folia Microbiol (Praha) 2011; 55:598-602. [PMID: 21253905 DOI: 10.1007/s12223-010-0096-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2009] [Revised: 08/20/2010] [Indexed: 11/28/2022]
Abstract
A high-throughput, medium-discrimination method for preliminary typing and selecting non-identical isolates of lactic acid bacteria in cheeses was developed. RAMP, a PCR with one microsatellite-targeted and one random primer, was used for preliminary typing of 1119 isolates of lactic acid bacteria from Slovak Bryndza cheese. A total of 59 genotypes were identified based on RAMP profiles consisting of 12-23 DNA fragments of 150-3000 bp. For example, 18, 17, 13 and 7 different RAMP-types were identified in Lactobacillus brevis, L. plantarum, L. paracasei and L. fermentum, respectively. The method facilitated well reproducible, medium-discrimination typing of Lactobacillus spp. and Pediococcus spp. at a subspecies level and proved to be suitable for preliminary typing of lactic acid bacteria isolated from cheese.
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Affiliation(s)
- V Chebeňová
- Department of Microbiology and Molecular Biology, Food Research Institute, Bratislava, Slovakia
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Ryberg A, Olsson C, Ahrné S, Monstein HJ. Comparison of (GTG)5-oligonucleotide and ribosomal intergenic transcribed spacer (ITS)-PCR for molecular typing of Klebsiella isolates. J Microbiol Methods 2010; 84:183-8. [PMID: 21129413 DOI: 10.1016/j.mimet.2010.11.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Revised: 11/16/2010] [Accepted: 11/19/2010] [Indexed: 12/20/2022]
Abstract
Molecular typing of Klebsiella species has become important for monitoring dissemination of β-lactamase-producers in hospital environments. The present study was designed to evaluate poly-trinucleotide (GTG)(5)- and rDNA intergenic transcribed spacer (ITS)-PCR fingerprint analysis for typing of Klebsiella pneumoniae and Klebsiella oxytoca isolates. Multiple displacement amplified DNA derived from 19 K. pneumoniae (some with an ESBL-phenotype), 35 K. oxytoca isolates, five K. pneumoniae, two K. oxytoca, three Raoultella, and one Enterobacter aerogenes type and reference strains underwent (GTG)(5) and ITS-PCR analysis. Dendrograms were constructed using cosine coefficient and the Neighbour joining method. (GTG)(5) and ITS-PCR analysis revealed that K. pneumoniae and K. oxytoca isolates, reference and type strains formed distinct cluster groups, and tentative subclusters could be established. We conclude that (GTG)(5) and ITS-PCR analysis combined with automated capillary electrophoresis provides promising tools for molecular typing of Klebsiella isolates.
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Affiliation(s)
- Anna Ryberg
- Division of Clinical Microbiology, University Hospital Linköping, Linköping University, Linköping, Sweden
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Svec P, Pantůček R, Petráš P, Sedláček I, Nováková D. Identification of Staphylococcus spp. using (GTG)₅-PCR fingerprinting. Syst Appl Microbiol 2010; 33:451-6. [PMID: 21095086 DOI: 10.1016/j.syapm.2010.09.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2010] [Revised: 09/22/2010] [Accepted: 09/23/2010] [Indexed: 11/28/2022]
Abstract
A group of 212 type and reference strains deposited in the Czech Collection of Microorganisms (Brno, Czech Republic) and covering 41 Staphylococcus species comprising 21 subspecies was characterised using rep-PCR fingerprinting with the (GTG)₅ primer in order to evaluate this method for identification of staphylococci. All strains were typeable using the (GTG)₅ primer and generated PCR products ranging from 200 to 4500 bp. Numerical analysis of the obtained fingerprints revealed (sub)species-specific clustering corresponding with the taxonomic position of analysed strains. Taxonomic position of selected strains representing the (sub)species that were distributed over multiple rep-PCR clusters was verified and confirmed by the partial rpoB gene sequencing. Staphylococcus caprae, Staphylococcus equorum, Staphylococcus sciuri, Staphylococcus piscifermentans, Staphylococcus xylosus, and Staphylococcus saprophyticus revealed heterogeneous fingerprints and each (sub)species was distributed over several clusters. However, representatives of the remaining Staphylococcus spp. were clearly separated in single (sub)species-specific clusters. These results showed rep-PCR with the (GTG)₅ primer as a fast and reliable method applicable for differentiation and straightforward identification of majority of Staphylococcus spp.
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Affiliation(s)
- Pavel Svec
- Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Tvrdého 14, 602 00, Brno, Czech Republic.
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Radimersky T, Frolkova P, Janoszowska D, Dolejska M, Svec P, Roubalova E, Cikova P, Cizek A, Literak I. Antibiotic resistance in faecal bacteria (Escherichia coli, Enterococcus spp.) in feral pigeons. J Appl Microbiol 2010; 109:1687-95. [PMID: 20602656 DOI: 10.1111/j.1365-2672.2010.04797.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS To determine the presence of antibiotic-resistant faecal Escherichia coli and Enterococcus spp. in feral pigeons (Columba livia forma domestica) in the Czech Republic. METHODS AND RESULTS Cloacal swabs of feral pigeons collected in the city of Brno in 2006 were cultivated for antibiotic-resistant E. coli. Resistance genes, class 1 and 2 integrons, and gene cassettes were detected in resistant isolates by polymerase chain reaction (PCR). The samples were also cultivated for enterococci. Species status of enterococci isolates was determined using repetitive extragenic palindromic-PCR. Resistance genes were detected in resistant enterococci by PCR. E. coli isolates were found in 203 of 247 pigeon samples. Antibiotic resistance was recorded in three (1·5%, n(E. coli) =203) isolates. Using agar containing ciprofloxacin, 12 (5%, n(samples) =247) E. coli strains resistant to ciprofloxacin were isolated. No ESBL-producing E. coli isolates were detected. A total of 143 enterococci were isolated: Ent. faecalis (36 isolates), Ent. faecium (27), Ent. durans (19), Ent. hirae (17), Ent. mundtii (17), Ent. gallinarum (12), Ent. casseliflavus (12) and Ent. columbae (3). Resistance to one to four antibiotics was detected in 45 (31%) isolates. Resistances were determined by tetK, tetL, tetM, tetO, aac(6')aph(2''), ant(4')-Ia, aph(3')-IIIa, ermB, pbp5, vanA and vanC1 genes. CONCLUSIONS Antibiotic-resistant E. coli and Enterococcus spp. occurred in feral pigeons in various prevalences. SIGNIFICANCE AND IMPACT OF THE STUDY Feral pigeon should be considered a risk species for spreading in the environment antimicrobial resistant E. coli and enterococci.
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Affiliation(s)
- T Radimersky
- Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene and Ecology, University of Veterinary and Pharmaceutical Sciences, Palackeho 1-3, Brno, Czech Republic
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Nováková D, Pantůček R, Hubálek Z, Falsen E, Busse HJ, Schumann P, Sedláček I. Staphylococcus microti sp. nov., isolated from the common vole (Microtus arvalis). Int J Syst Evol Microbiol 2009; 60:566-573. [PMID: 19654347 DOI: 10.1099/ijs.0.011429-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two strains of Gram-positive cocci were isolated from viscera of common voles (Microtus arvalis Pallas) with generalized Brucella microti infection in the Czech Republic. Biochemical features and phylogenetic analysis based on 16S rRNA gene sequences showed that the strains are representatives of the genus Staphylococcus and assigned Staphylococcus muscae as the nearest relative. A detailed characterization done by ribotyping, rpoB and hsp60 gene sequencing, whole-cell protein analysis and rep-PCR using the (GTG)(5) primer differentiated the two strains from all described staphylococci. DNA-DNA hybridization with the type strain of S. muscae demonstrated that the two strains should be considered as members of a novel species (26.8 % reassociation). The two analysed strains were found to be coagulase-negative, novobiocin-susceptible, oxidase-negative cultures, phenotypically close to one another, but showing differences in ribotype profiles. The major fatty acids were iso-C(15 : 0), iso-C(17 : 0), anteiso-C(15 : 0), C(18 : 2 )omega6,9c/anteiso-C(18 : 0), C(18 : 0) and C(18 : 1) omega9c. MK-7 was the predominant isoprenoid quinone, with minor amounts of MK-6 and MK-8. The polar lipid profile was composed of the major lipids diphosphatidylglycerol and phosphatidylglycerol and several unknown lipids. These results proved that the two isolates represent a novel staphylococcal species. The name proposed for this novel taxon is Staphylococcus microti sp. nov.; the type strain is 4005-LJ(m)(T) (=CCM 4903(T) =CCUG 55861(T) =DSM 22147(T)).
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Affiliation(s)
- Dana Nováková
- Masaryk University, Institute of Experimental Biology, Czech Collection of Microorganisms, Tvrdého 14, CZ-602 00 Brno, Czech Republic
| | - Roman Pantůček
- Masaryk University, Institute of Experimental Biology, Department of Genetics and Molecular Biology, Kotlářská2, CZ-611 37 Brno, Czech Republic
| | - Zdeněk Hubálek
- Institute of Vertebrate Biology, Academy of Sciences, Květná 8, CZ-603 65 Brno, Czech Republic
| | - Enevold Falsen
- Culture Collection, University of Göteborg, Department of Clinical Bacteriology, Guldhedsgatan 10, SE-413 46 Göteborg, Sweden
| | - Hans-Jürgen Busse
- Institut für Bakteriologie, Mykologie und Hygiene, Veterinärmedizinische Universität, Veterinärplatz 1, A-1210 Wien, Austria
| | - Peter Schumann
- Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstrasse 7b, D-38124 Braunschweig, Germany
| | - Ivo Sedláček
- Masaryk University, Institute of Experimental Biology, Czech Collection of Microorganisms, Tvrdého 14, CZ-602 00 Brno, Czech Republic
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