Phenotypic and Genetic Characterization of Clinical Isolates of CDC Coryneform Group A-3: Proposal of a New Species of Cellulomonas, Cellulomonas denverensis sp. nov

CDC coryneform group A-3 bacteria are rare human pathogens. In this study, six group A-3 isolates (two from blood, one from cerebrospinal fluid, and one each from homograft valve, lip wound, and pilonidal cyst) were compared to the type strains of phenotypically related organisms, Cellulomonas fimi,...

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Veröffentlicht in:Journal of Clinical Microbiology 2005-04, Vol.43 (4), p.1732-1737
Hauptverfasser: Brown, June M, Frazier, Rodrick P, Morey, Roger E, Steigerwalt, Arnold G, Pellegrini, Gerald J, Daneshvar, Maryam I, Hollis, Dannie G, McNeil, Michael M
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container_end_page 1737
container_issue 4
container_start_page 1732
container_title Journal of Clinical Microbiology
container_volume 43
creator Brown, June M
Frazier, Rodrick P
Morey, Roger E
Steigerwalt, Arnold G
Pellegrini, Gerald J
Daneshvar, Maryam I
Hollis, Dannie G
McNeil, Michael M
description CDC coryneform group A-3 bacteria are rare human pathogens. In this study, six group A-3 isolates (two from blood, one from cerebrospinal fluid, and one each from homograft valve, lip wound, and pilonidal cyst) were compared to the type strains of phenotypically related organisms, Cellulomonas fimi, Cellulomonas hominis, Oerskovia turbata, and Sanguibacter suarezii, and characterized by phenotypic, chemotaxonomic, and genotypic studies. DNA-DNA reassociation analysis identified two genomic groups, and phylogenetic analysis of the 16S rRNA gene sequence identified the taxonomic positions of these groups to genus level. Two groups were defined, and both were more closely related to Cellulomonas species: one group of three strains, for which we propose the new species Cellulomonas denverensis sp. nov., with the type strain W6929 (ATCC BAA-788[superscript T] or DSM 15764[superscript T]), was related to C. hominis ATCC 51964[superscript T] (98.5% 16S rRNA gene sequence similarity), and the second group of three strains was related to C. hominis ATCC 51964[superscript T] (99.8 to 99.9% 16S rRNA gene sequence similarity). The definition of this new Cellulomonas species and the confirmation of three strains as C. hominis serve to further clarify the complex taxonomy of CDC coryneform group A-3 bacteria and will assist in our understanding of the epidemiology and clinical significance of these microorganisms.
doi_str_mv 10.1128/JCM.43.4.1732-1737.2005
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In this study, six group A-3 isolates (two from blood, one from cerebrospinal fluid, and one each from homograft valve, lip wound, and pilonidal cyst) were compared to the type strains of phenotypically related organisms, Cellulomonas fimi, Cellulomonas hominis, Oerskovia turbata, and Sanguibacter suarezii, and characterized by phenotypic, chemotaxonomic, and genotypic studies. DNA-DNA reassociation analysis identified two genomic groups, and phylogenetic analysis of the 16S rRNA gene sequence identified the taxonomic positions of these groups to genus level. 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source American Society for Microbiology; MEDLINE; EZB-FREE-00999 freely available EZB journals; PubMed Central
subjects Actinomycetales Infections - microbiology
Bacterial Typing Techniques
Bacteriology
Biological and medical sciences
Cellulomonas - chemistry
Cellulomonas - classification
Cellulomonas - genetics
Cellulomonas - isolation & purification
Cellulomonas denverensis
Cellulomonas fimi
Cellulomonas hominis
DNA, Ribosomal - analysis
Fatty Acids - analysis
Fundamental and applied biological sciences. Psychology
Humans
Infectious diseases
Medical sciences
Microbiology
Molecular Sequence Data
Oerskovia turbata
Phenotype
Phylogeny
RNA, Ribosomal, 16S - genetics
Sanguibacter suarezii
Sequence Analysis, DNA
title Phenotypic and Genetic Characterization of Clinical Isolates of CDC Coryneform Group A-3: Proposal of a New Species of Cellulomonas, Cellulomonas denverensis sp. nov
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