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Human Oral Microbiome Taxon Description
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Human Oral Taxon ID (HOT):
Named - Cultured
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NCBI Taxonomy ID:
[NCBI Taxonomy Link]
16S rRNA Sequence:
16S rRNA Alignment:
[Entrez Nucleotide Link]
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[Entrez Protein Link]
Prevalence by Molecular Cloning:
Clones seen = 237 / 34879 = 0.679%
Rank Abundance = 27
This species is known to be heterogeneous with micro-variation among 16S rRNA sequences, including between operons within strains and phenotypic variation including colonial appearance .
Colonies on horse blood agar are around 1 mm in diameter, circular, entire, opaque white or translucent gray and may be smooth or rough after 4 days anaerobic incubation.
Small (0.3 -0.7 micron diameter) Gram-positive cocci occurring in pairs and short chains . Obligate anaerobe. Strains are asaccharolytic and the end-products of metabolism are primarily acetate with small amounts of lactate and sometimes succinate produced. The mol % G+C content of the DNA is 27-28.
Prevalence and Source:
Parvimonas micra is a commonly found oral species and is isolated from dental plaque and the tongue in health and a variety of oral disease associated microbiota including periodontitis, endodontic and dentoalveolar infections, pericoronitis and advanced dental caries.
Has been isolated from most types of oral infection. Is a particularly frequent isolate from acute dentoalveolar infections where it is often a member of the 15-20 species consortium associated with the condition. Has also been isolated from clinical specimens obtained from infections at other body sites, primarily soft-tissue abscesses and bite wounds. These are primarily at sites above the diaphragm suggesting that the mouth is the primary habitat.
van Dalen PJ, van Steenbergen TJ, Cowan MM, Busscher HJ, de Graaff J. Description of two morphotypes of Peptostreptococcus micros. Int J Syst Bacteriol. 1993 Oct;43(4):787-93
Holdeman Moore LV, Johnson JL, Moore, WEC. The genus Peptostreptococcus. Bergeys Manual of Systematic Bacteriology 1986; Vol. 2, pp. 1090-1091.
Curator: William Wade
Creation Info: 2007-12-31
, 2008-01-23 13:30:00
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