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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Porphyromonas gingivalis
Category: Primarily of interest in human medicin
Etymology: Genus name: Porphyrin unit (cell).
Species epithet: refers to the gums (gingival).
Significance:  [Of minor importance]   
Taxonomy:
Phylum
Bacteroidetes
Class
Bacteroidia
Order
Bacteroidales
Family
Porphyromonadacea 
Genus
Phorphyromonas
Type Strain: 2561 = ATCC 33277 = CCUG = NCTC 11834.
Macromorphology (smell): Forms brown or black colonies on blood agar due to protoheme production (0.5-3.0 mm in diameter).
Micromorphology: Forms short rods (0.3-1 x 0.8-3.5 µm).
Gram +/Gram -:G -
Metabolism: Obligately anaerobic
Catalase/Oxidase:-/?
Other Enzymes: Esculinase -, lipase -, tryptophanase (indole) +,
Spec. Char.:
Disease:Peridontitis, may also cause extraoral infections.
Hosts:
Clinical Picture: Toth loss
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AB035459 ATCC 33277T 1472  

Taxonomy/phylogeny:
 
About 15 species have been described within genus Porphyromonas. Many species, which were earlier affiliated with genus Bacteroides, have now been transfered to genus Porphyromonas or genus Prevotella. These three genera are related and belong to the order Bacteroidales.
Updated:2020-11-05

News

New families introduced within the order Enterobacterales
Phylogenetic tree for the order <i>Enterobacteriales</i>.

The order Enterobacterales (formerly called Enterobacteriales) previously consisted of bacteria with different properties and phylogenetically, these bacteria were far apart. In order for the taxonomy to be more in line with phylogeny, some of these bacteria have, therefore, been sorted into 6 new families.

Published 2022-04-13. Read more...

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