Porphyromonas is a Gram-negative, non-spore-forming, obligately anaerobic and non-motile genus from the family Porphyromonadaceae. There were 16 different Porphyromonas species documented as of 2015, which reside in both animal and human reservoirs. It was discovered more recently that Porphyromonas also exist in the environment, albeit to a lesser extent. This genus is notably implicated in the modulation of oral cavity, respiratory tract, and gastrointestinal tract disease states. It is suggested that Porphyromonas either operate as benign bacteria pertinent to host immunity or are potential pathobionts that opportunistically provoke diseased states when homeostasis is disrupted. Despite its characterization not being fully elucidated due to sparse research, various studies report the prevalence of this genus at 58.7% in healthy states compared with 41.3% in diseased states.
Parabacteroides distasonis is a Gram-negative, non-sporeforming, obligately anaerobic, rod-shaped, and non-motile bacterium from the genus of Parabacteroides.
Porphyromonas bennonis is a Gram-negative, anaerobic and non-spore-forming bacterium from the genus Porphyromonas which has been isolated from human clinical specimens.
Porphyromonas canoris is a Gram-negative, obligately anaerobic, non-spore-forming and non-motile bacterium from the genus Porphyromonas which has been isolated from subgingival plaque from dogs.
Porphyromonas catoniae is a Gram-negative and anaerobic bacterium from the genus Porphyromonas which has been isolated from the human gingival crevice.
Porphyromonas circumdentaria is a Gram-negative and anaerobic bacterium from the genus Porphyromonas which has been isolated from a subcutaneous abscess of a cat in Australia.
Porphyromonas pasteri is a Gram-negative, obligately anaerobic, non-spore-forming and non-motile bacterium from the genus Porphyromonas which has been isolated from the human saliva. Porphyromonas pasteri is associated with periodontitis, a disease that can lead to tooth loss, and has also been linked to other systemic diseases such as cardiovascular disease, rheumatoid arthritis, and certain cancers.
Porphyromonas pogonae is a Gram-negative bacterium from the genus Porphyromonas which has been isolated from human clinical specimen.
Porphyromonas somerae is a Gram-negative and anaerobic bacterium from the genus Porphyromonas which has been isolated from a human leg ulcer in the United States.
Porphyromonas macacae is a Gram-negative, non-spore-forming, anaerobic and non-motile bacterium from the genus Porphyromonas which has been isolated from the periodontal pocket of the macaque Macaca arctoides.
Porphyromonas levii is a Gram-negative, anaerobic bacterium from the genus Porphyromonas, which has been isolated from a bovine rumen.
Shewanella aestuarii is a Gram-negative, non-spore-forming, facultatively anaerobic, rod-shaped and motile bacterium with a polar flagellum from the genus Shewanella which has been isolated from tidal flat from the Suncheon bay on Korea.
Catenococcus is a Gram-negative and facultatively anaerobic genus of bacteria from the family of Vibrionaceae with one known species.
Catonella is a Gram-negative, obligately anaerobic, non-spore-forming and non-motile bacterial genus from the family of Lachnospiraceae with one known species. Catonella morbi occur in the gingival crevice of humans.
Johnsonella is a Gram-negative, non-spore-forming and non-motil bacterial genus from the family of Lachnospiraceae with one known species. Johnsonella ignava occur in the gingival crevice of humans.
Anaeroglobus is a Gram-negative, cocci, non-spore-forming, anaerobic and non-motile genus of bacteria from the family of Veillonellaceae with one known species.
Geobacter chapellei is a Gram-negative, strictly anaerobic, mesophilic and non-motile bacterium from the genus of Geobacter which has been isolated fromaq uifer sediments from the Atlantic Coastal Plain in the United States.
Malonomonas is a Gram-negative, non-spore-forming, chemoorganotrophic, anaerobic and motile genus of bacteria with single polar flagellum from the family of Pelobacteraceae with one known species . Strains of Malonomonas have been isolated from anoxic sediments. the bacteria Malonomonas rubra bacteria metabolizes malonate.
Odoribacteraceae is a Gram-negative, anaerobic and non-spore-forming family in the order of Bacteroidales.
Aminiphilus is a Gram-negative, non-spore-forming and motile genus of bacteria from the family of Synergistaceae with one known species. Aminiphilus circumscriptus has been isolated from anaerobic sludge from Colombia.
