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Negi V, Singh Y, Schumann P, Lal R. Corynebacterium pollutisoli sp. nov., isolated from hexachlorocyclohexane-contaminated soil. Int J Syst Evol Microbiol 2016; 66:3531-3537. [DOI: 10.1099/ijsem.0.001228] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Vivek Negi
- Molecular Biology Laboratory, Department of Zoology, University of Delhi, Delhi-110007, India
| | - Yogendra Singh
- Institute of Genomics and Integrative Biology, New Delhi-110007, India
| | - Peter Schumann
- Leibniz-Institut DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Rup Lal
- Molecular Biology Laboratory, Department of Zoology, University of Delhi, Delhi-110007, India
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2
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Funke G, Englert R, Frodl R, Bernard KA, Stenger S. Corynebacterium canis sp. nov., isolated from a wound infection caused by a dog bite. Int J Syst Evol Microbiol 2009; 60:2544-2547. [PMID: 20008112 DOI: 10.1099/ijs.0.019927-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A non-lipophilic, coryneform bacterium isolated from a patient's wound caused by a dog bite was characterized by phenotypic, chemotaxonomic and molecular genetic methods. Chemotaxonomic features suggested assignment of the unknown bacterium to the genus Corynebacterium. The isolate exhibited the following unusual features, which made it possible to phenotypically differentiate it from all other medically relevant corynebacteria: the Gram stain showed some very filamentous rods (>15 μm in length); some cells exhibited branching; colonies were domed and adherent to agar; the micro-organism was positive for pyrazinamidase, β-glucosidase, α-glucosidase and trypsin but negative for β-galactosidase. 16S rRNA gene sequencing and partial rpoB gene sequencing showed that the closest phylogenetic relative, Corynebacterium freiburgense, exhibited more than 1.9 % and 17.9 % divergence with the unknown bacterium, respectively. Based on both phenotypic and molecular genetic data, it is proposed that the isolate should be classified as a novel species, Corynebacterium canis sp. nov., with the type strain 1170(T) (=CCUG 58627(T) =DSM 45402(T)).
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Affiliation(s)
- Guido Funke
- Department of Medical Microbiology and Hygiene, Gärtner & Colleagues Laboratories, Elisabethenstrasse 11, 88212 Ravensburg, Germany
| | - Ralf Englert
- Department of Medical Microbiology, Labor Clotten, Bismarckallee 10, 79098 Freiburg/Breisgau, Germany
| | - Reinhard Frodl
- Department of Medical Microbiology and Hygiene, Gärtner & Colleagues Laboratories, Elisabethenstrasse 11, 88212 Ravensburg, Germany
| | - Kathryn A Bernard
- National Microbiology Laboratory, Public Health Agency of Canada, 1015 Arlington Avenue, Winnipeg, R3E 3 R2, Manitoba, Canada
| | - Steffen Stenger
- Department of Medical Microbiology and Hygiene, University of Ulm, Robert-Koch-Strasse 10, 89075 Ulm, Germany
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3
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Funke G, Frodl R, Bernard KA, Englert R. Corynebacterium freiburgense sp. nov., isolated from a wound obtained from a dog bite. Int J Syst Evol Microbiol 2009; 59:2054-7. [PMID: 19605716 DOI: 10.1099/ijs.0.008672-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A non-lipophilic, coryneform bacterium, isolated from a patient's wound obtained from a dog bite, was characterized by phenotypic, chemotaxonomic and molecular genetic methods. Chemotaxonomic features suggested assignment of the unknown bacterium to the genus Corynebacterium. The isolate exhibited the following peculiar features which made it possible to differentiate it phenotypically from all other medically relevant corynebacteria: older colonies exhibited a 'spoke-wheel' macroscopic morphology, colonies were strongly adherent to blood agar and the strain did not have pyrazinamidase activity, but was positive for beta-galactosidase. 16S rRNA gene sequencing showed that the closest phylogenetic relative exhibited more than 3.9% divergence from the unknown isolate. Based on phenotypic and molecular genetic data, it is proposed that the isolate should be classified as a representative of a novel species, Corynebacterium freiburgense sp. nov., with strain 1045T (=CCUG 56874T=DSM 45254T) as the type strain.
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Affiliation(s)
- Guido Funke
- Department of Medical Microbiology and Hygiene, Gärtner and Colleagues Laboratories, Elisabethenstrasse 11, 88212 Ravensburg, Germany.
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4
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Bacterial signatures in atherosclerotic lesions represent human commensals and pathogens. Atherosclerosis 2008; 201:192-7. [PMID: 18342318 DOI: 10.1016/j.atherosclerosis.2008.01.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2007] [Revised: 01/17/2008] [Accepted: 01/23/2008] [Indexed: 11/24/2022]
Abstract
BACKGROUND Various studies have suggested the involvement of infectious agents in chronic inflammatory diseases, including atherosclerosis. By using a novel subtraction broad-range PCR approach, we defined bacterial DNA signatures in surgically removed sterile abdominal aorta samples of patients with aortic atherosclerosis. METHODS Partial bacterial 16S rDNA nucleotide sequences were determined using broad-range PCR from aortic samples of 20 patients, and from appropriate methodological controls. In all, 160 sequences from 16 clone libraries were studied. RESULTS After subtraction analysis 16 clinically relevant bacterial sequence-types were identified among the patient samples, whereas 29 were discarded as potential methodological contaminants. On average 2.2+/-1.2 different bacterial sequence-types were present in the nine true PCR-positive atheroma samples. CONCLUSIONS Many studies have reported the presence of a variety of bacterial sequences from atherosclerotic lesions. However, the results obtained with these PCR technologies may have been skewed by methodological contaminants. After our subtraction approach, 63% of the remaining sequence-types from sites of aortic atherosclerosis were related to those of known human pathogens. This may imply that advanced atherosclerotic plaques accumulate bacterial DNA.
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5
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Rajilić-Stojanović M, Smidt H, de Vos WM. Diversity of the human gastrointestinal tract microbiota revisited. Environ Microbiol 2007; 9:2125-36. [PMID: 17686012 DOI: 10.1111/j.1462-2920.2007.01369.x] [Citation(s) in RCA: 412] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Since the early days of microbiology, more than a century ago, representatives of over 400 different microbial species have been isolated and fully characterized from human gastrointestinal samples. However, during the past decade molecular ecological studies based on ribosomal RNA (rRNA) sequences have revealed that cultivation has been able only to access a small fraction of the microbial diversity within the gastrointestinal tract. The increasing number of deposited rRNA sequences calls for the setting up a curated database that allows handling of the excessive degree of redundancy that threatens the usability of public databases. The integration of data from cultivation-based studies and molecular inventories of small subunit (SSU) rRNA diversity, presented here for the first time, provides a systematic framework of the microbial diversity in the human gastrointestinal tract of more than 1000 different species-level phylogenetic types (phylotypes). Such knowledge is essential for the design of high-throughput approaches such as phylogenetic DNA microarrays for the comprehensive analysis of gastrointestinal tract microbiota at multiple levels of taxonomic resolution. Development of such approaches is likely to be pivotal to generating novel insights in microbiota functionality in health and disease.
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Affiliation(s)
- Mirjana Rajilić-Stojanović
- Laboratory of Microbiology, Wageningen University, Hesselink van Suchtelenweg 4, 6703 CT Wageningen, The Netherlands.
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6
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Yassin AF. Corynebacterium ureicelerivorans sp. nov., a lipophilic bacterium isolated from blood culture. Int J Syst Evol Microbiol 2007; 57:1200-1203. [PMID: 17551029 DOI: 10.1099/ijs.0.64832-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A lipophilic coryneform bacterium isolated from a blood culture from a patient with signs of septicaemia was characterized by means of phenotypic and molecular taxonomic methods. Chemotaxonomic investigations revealed the presence of cell-wall chemotype IV and short-chain mycolic acids, which are consistent with the genus Corynebacterium. The isolate was characterized biochemically by the very rapid (approx. 60 s) positive result that was obtained in a urease test in the API Coryne system. Comparative 16S rRNA gene sequencing demonstrated that the isolate belonged phylogenetically to the genus Corynebacterium. The values for sequence divergence (⩾1.4 %) with respect to known Corynebacterium species, together with phenotypic differences, show that the unidentified bacterium represents a novel member of this genus. On the basis of both the phenotypic and phylogenetic data, this isolate should be classified within a novel species of the genus Corynebacterium, for which the name Corynebacterium ureicelerivorans sp. nov. is proposed. The type strain is IMMIB RIV-2301T (=DSM 45051T=CCUG 53377T).
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MESH Headings
- Bacteremia/microbiology
- Bacterial Typing Techniques
- Blood/microbiology
- Cell Wall/chemistry
- Corynebacterium/classification
- Corynebacterium/isolation & purification
- Corynebacterium Infections/microbiology
- DNA, Bacterial/chemistry
- DNA, Bacterial/genetics
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/genetics
- Genes, rRNA
- Humans
- Molecular Sequence Data
- Mycolic Acids/analysis
- Phylogeny
- RNA, Bacterial/genetics
- RNA, Ribosomal, 16S/genetics
- Sequence Analysis, DNA
- Sequence Homology, Nucleic Acid
- Urease/analysis
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Affiliation(s)
- A F Yassin
- Institut für Medizinische Mikrobiologie und Immunologie der Universität Bonn, Sigmund-Freud-Straße 25, 53127 Bonn, Germany
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7
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Wiesmayr S, Stelzmueller I, Berger N, Jungraithmayr TC, Fille M, Eller M, Zimmerhackl LB, Margreiter R, Bonatti H. Rothia dentocariosa sepsis in a pediatric renal transplant recipient having post-transplant lymphoproliferative disorders. Pediatr Transplant 2006; 10:377-9. [PMID: 16677365 DOI: 10.1111/j.1399-3046.2005.00472.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Rothia dentocariosa (RD) is a Gram-positive rod that colonizes the human oral cavity and can cause infective endocarditis. RESULT We report on a six-yr-old boy who underwent renal transplantation for polycystic kidney disease at the age of eight months. He developed post-transplant lymphoproliferative disorders after four yr and progressive graft failure. Following chemotherapy, the patient presented with neutropenia and sepsis. RD was isolated from blood and treatment with piperacillin/tazobactam was initiated; however, the child died because of multiorgan failure. DISCUSSION To the best of our knowledge, this is the first case of RD sepsis in a pediatric solid organ transplant recipient.
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Affiliation(s)
- Silke Wiesmayr
- Department of Pediatrics, Medical University, Innsbruck, Austria
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8
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Fernández-Garayzábal JF, Vela AI, Egido R, Hutson RA, Lanzarot MP, Fernández-García M, Collins MD. Corynebacterium ciconiae sp. nov., isolated from the trachea of black storks (Ciconia nigra). Int J Syst Evol Microbiol 2004; 54:2191-2195. [PMID: 15545457 DOI: 10.1099/ijs.0.63165-0] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Eight unidentified Gram-positive, rod-shaped organisms were recovered from the tracheas of apparently healthy black storks (Ciconia nigra) and subjected to a polyphasic taxonomic analysis. Based on cellular morphology and biochemical criteria the isolates were tentatively assigned to the genus Corynebacterium, although three of the organisms did not appear to correspond to any recognized species. Comparative 16S rRNA gene sequencing studies demonstrated that all of the isolates were phylogenetically members of the genus Corynebacterium. Five strains were genotypically identified as representing Corynebacterium falsenii, whereas the remaining three strains represented a hitherto unknown subline, associated with a small subcluster of species that includes Corynebacterium mastitidis and its close relatives. On the basis of phenotypic and phylogenetic evidence, it is proposed that the unknown isolates from black storks represent a novel species within the genus Corynebacterium, for which the Corynebacterium ciconiae sp. nov. is proposed. The type strain is CECT 5779T (=BS13T=CCUG 47525T).
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Affiliation(s)
- J F Fernández-Garayzábal
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - A I Vela
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - R Egido
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - R A Hutson
- School of Food Biosciences, University of Reading, Reading RG6 6AP, UK
| | - M P Lanzarot
- Gesnatura S.L., Avda. Brasil, 4, 28020 Madrid, Spain
| | | | - M D Collins
- School of Food Biosciences, University of Reading, Reading RG6 6AP, UK
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9
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Feurer C, Clermont D, Bimet F, Candréa A, Jackson M, Glaser P, Bizet C, Dauga C. Taxonomic characterization of nine strains isolated from clinical and environmental specimens, and proposal of Corynebacterium tuberculostearicum sp. nov. Int J Syst Evol Microbiol 2004; 54:1055-1061. [PMID: 15280269 DOI: 10.1099/ijs.0.02907-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Nine unidentified Gram-positive, lipophilic corynebacteria were isolated from clinical and food samples and subjected to a polyphasic taxonomic analysis. The bacteria were distinguished from Corynebacterium species with validly published names by biochemical tests, fatty acid content and whole-cell protein analysis. Comparative 16S rRNA gene sequence analysis demonstrated unambiguously that the nine strains were related phylogenetically to the species ‘Corynebacterium tuberculostearicum’ and represented a distinct subline within the genus Corynebacterium. On the basis of both phenotypic and phylogenetic evidence, the formal description of Corynebacterium tuberculostearicum sp. nov. is proposed. The type strain of C. tuberculostearicum is Medalle XT (=LDC-20T=CIP 107291T=CCUG 45418T=ATCC 35529T).
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Affiliation(s)
- Carole Feurer
- Laboratoire de Génomique des Micro-organismes Pathogènes, Département Structure et Dynamique des Génomes, Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris cedex 15, France
- Molecular Diagnostics Unit, Department of Biological Sciences, Cork Institute of Technology, Rossa Avenue, Cork, Ireland
- Collection de l'Institut Pasteur, Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris cedex 15, France
| | - Dominique Clermont
- Collection de l'Institut Pasteur, Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris cedex 15, France
| | - François Bimet
- Collection de l'Institut Pasteur, Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris cedex 15, France
| | - Adina Candréa
- Collection de l'Institut Pasteur, Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris cedex 15, France
| | - Mary Jackson
- Unité de Génétique Mycobactérienne, Département Pathogénèse Microbienne, Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris cedex 15, France
| | - Philippe Glaser
- Laboratoire de Génomique des Micro-organismes Pathogènes, Département Structure et Dynamique des Génomes, Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris cedex 15, France
| | - Chantal Bizet
- Collection de l'Institut Pasteur, Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris cedex 15, France
| | - Catherine Dauga
- Collection de l'Institut Pasteur, Institut Pasteur, 25-28 rue du Dr Roux, 75724 Paris cedex 15, France
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10
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Abstract
As recent external quality control results have shown, the diagnosis of Rothia dentocariosa infection still presents problems for clinical laboratories. This review describes the taxonomy, as well as the chemotaxonomic, morphological and biochemical characteristics, of this organism, and surveys bacteria that may be confused with Rothia dentocariosa.
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11
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Fernández-Garayzábal JF, Egido R, Vela AI, Briones V, Collins MD, Mateos A, Hutson RA, Domínguez L, Goyache J. Isolation of Corynebacterium falsenii and description of Corynebacterium aquilae sp. nov., from eagles. Int J Syst Evol Microbiol 2003; 53:1135-1138. [PMID: 12892140 DOI: 10.1099/ijs.0.02533-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Biochemical, molecular chemical and molecular genetic studies were performed on seven unidentified gram-positive, rod-shaped organisms recovered from eagles. The strains were provisionally identified as Corynebacterium jeikeium with the commercial API Coryne system, but they were able to grow under anaerobic conditions and were non-lipophilic. Comparative 16S rRNA gene sequencing studies demonstrated that the isolates belonged phylogenetically to the genus Corynebacterium. Three strains were identified genotypically as Corynebacterium falsenii; the remaining four strains corresponded to a hitherto unknown lineage within the genus Corynebacterium, associated with a small subcluster of species that included Corynebacterium diphtheriae and its close relatives. The unknown bacterial strains were readily distinguished from these and other species of the genus by biochemical tests. Based on both phenotypic and phylogenetic evidence, it is proposed that the unknown bacterial strains from eagles should be classified as Corynebacterium aquilae sp. nov. (type strain is S-613T = CECT 5993T = CCUG 46511T).
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Affiliation(s)
- J F Fernández-Garayzábal
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - R Egido
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - A I Vela
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - V Briones
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - M D Collins
- School of Food Biosciences, University of Reading, Reading RG6 6AP, UK
| | - A Mateos
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - R A Hutson
- School of Food Biosciences, University of Reading, Reading RG6 6AP, UK
| | - L Domínguez
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - J Goyache
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
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12
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Goyache J, Ballesteros C, Vela AI, Collins MD, Briones V, Hutson RA, Potti J, García-Borboroglu P, Domínguez L, Fernández-Garayzábal JF. Corynebacterium sphenisci sp. nov., isolated from wild penguins. Int J Syst Evol Microbiol 2003; 53:1009-1012. [PMID: 12892119 DOI: 10.1099/ijs.0.02502-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Six unidentified gram-positive, rod-shaped organisms recovered from the cloacae of apparently healthy wild penguins were characterized by phenotypic and molecular taxonomic methods. Chemotaxonomic investigations revealed the presence of a cell wall based on meso-diaminopimelic acid and long-chain cellular fatty acids of the straight-chain saturated and monounsaturated types, consistent with the genus Corynebacterium. Corynomycolic acids, which are characteristic of the genus, were also detected, albeit in small amounts. Comparative 16S rRNA gene sequencing studies showed that the unidentified organisms were phylogenetically related to corynebacteria and represent a novel subline associated with a small subcluster of species that includes Corynebacterium xerosis, Corynebacterium amycolatum and Corynebacterium freneyi. The unknown isolates were readily distinguished from their closest phylogenetic relatives and all other Corynebacterium species with validly published names by using a combination of biochemical and chemotaxonomic criteria. Based on both phenotypic and 16S rRNA gene sequence considerations, it is proposed that the unknown isolates recovered from penguins be classified as a novel species in the genus Corynebacterium, Corynebacterium sphenisci sp. nov. The type strain is CECT 5990T (= CCUG 46398T).
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Affiliation(s)
- J Goyache
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - C Ballesteros
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - A I Vela
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - M D Collins
- School of Food Biosciences, University of Reading, Reading RG6 6AP, UK
| | - V Briones
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - R A Hutson
- School of Food Biosciences, University of Reading, Reading RG6 6AP, UK
| | - J Potti
- Departamento de Biología Animal, Universidad de Alcalá, Alcalá de Henares, 28871 Madrid, Spain
| | | | - L Domínguez
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - J F Fernández-Garayzábal
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
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13
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Goyache J, Vela AI, Collins MD, Ballesteros C, Briones V, Moreno J, Yorio P, Domínguez L, Hutson R, Fernández-Garayzábal JF. Corynebacterium spheniscorum sp. nov., isolated from the cloacae of wild penguins. Int J Syst Evol Microbiol 2003; 53:43-46. [PMID: 12656150 DOI: 10.1099/ijs.0.02343-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Twenty unidentified Gram-positive, rod-shaped organisms were recovered from the cloacae of apparently healthy wild penguins (Spheniscus magellanicus) and subjected to a polyphasic taxonomic analysis. On the basis of cellular morphology and biochemical criteria, the isolates were tentatively assigned to the genus Corynebacterium, although the organisms did not appear to correspond to any recognized species. Lipid studies confirmed this generic placement, and comparative 16S rRNA gene sequencing showed that the unidentified organisms represent a hitherto unknown subline, associated with a small subcluster of species that includes Corynebacterium diphtheriae and its close relatives. On the basis of phenotypic and phylogenetic evidence, it is proposed that the unknown isolates from penguins be classified in the genus Corynebacterium, as Corynebacterium spheniscorum sp. nov. The type strain is strain PG 39T (=CCUG 45512T =CECT 5986T).
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Affiliation(s)
- J Goyache
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - A I Vela
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - M D Collins
- School of Food Biosciences, University of Reading, Reading RG6 6AP, UK
| | - C Ballesteros
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - V Briones
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - J Moreno
- Museo Nacional de Ciencias Naturales, Departamento de Ecología Evolutiva, C/José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - P Yorio
- CENPAT-CONICET, Bv. Brown s/n, Puerto Madryn, Chubut, Argentina
| | - L Domínguez
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
| | - R Hutson
- School of Food Biosciences, University of Reading, Reading RG6 6AP, UK
| | - J F Fernández-Garayzábal
- Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, 28040 Madrid, Spain
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14
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Bernard KA, Munro C, Wiebe D, Ongsansoy E. Characteristics of rare or recently described corynebacterium species recovered from human clinical material in Canada. J Clin Microbiol 2002; 40:4375-81. [PMID: 12409436 PMCID: PMC139690 DOI: 10.1128/jcm.40.11.4375-4381.2002] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Nineteen new Corynebacterium species or taxa described since 1995 have been associated with human disease. We report the characteristics of 72 strains identified as or most closely resembling 14 of these newer, medically relevant Corynebacterium species or taxa, as well as describe in brief an isolate of Corynebacterium bovis, a rare pathogen for humans. The bacteria studied in this report were nearly all derived from human clinical specimens and were identified by a polyphasic approach. Most were characterized by nearly full 16S rRNA gene sequence analysis. Some isolates were recovered from previously unreported sources and exhibited unusual phenotypes or represented the first isolates found outside Europe. Products of fermentation, with emphasis on the presence or absence of propionic acid, were also studied in order to provide an additional characteristic with which to differentiate among phenotypically similar species.
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Affiliation(s)
- K A Bernard
- National Microbiology Laboratory, Health Canada, Winnipeg, Manitoba R3E 3R2, Canada.
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15
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Collins MD, Hoyles L, Lawson PA, Falsen E, Robson RL, Foster G. Phenotypic and phylogenetic characterization of a new Corynebacterium species from dogs: description of Corynebacterium auriscanis sp. nov. J Clin Microbiol 1999; 37:3443-7. [PMID: 10523531 PMCID: PMC85662 DOI: 10.1128/jcm.37.11.3443-3447.1999] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Six strains of a previously undescribed catalase-positive coryneform bacterium isolated from clinical specimens from dogs were characterized by phenotypic and molecular genetic methods. Biochemical and chemotaxonomic studies revealed that the unknown bacterium belonged to the genus Corynebacterium sensu stricto. Comparative 16S rRNA gene sequencing showed that the six strains were genealogically highly related and constitute a new subline within the genus Corynebacterium; this subline is close to but distinct from C. falsenii, C. jeikeium, and C. urealyticum. The unknown bacterium from dogs was distinguished from all currently validated Corynebacterium species by phenotypic tests including electrophoretic analysis of whole-cell proteins. On the basis of phylogenetic and phenotypic evidence, it is proposed that the unknown bacterium be classified as a new species, Corynebacterium auriscanis. The type strain of C. auriscanis is CCUG 39938(T).
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Affiliation(s)
- M D Collins
- Department of Food Science and Technology, University of Reading, Reading RG6 6AP, United Kingdom.
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