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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 names of taxa within the classification category phylum

During October 2021, an article was published by A. Oren och G.M. Garrity, in which new names are proposed for a number of taxa within the classification category phylum. This has resulted in many discussions in social media about whether it was really necessary to make these changes, which have created confusion among microbiologists and other professionals who come into contact with bacteriology.

Published 2022-09-28. Read more...

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