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.
The Lachnospiraceae are a family of obligately anaerobic, variably spore-forming bacteria in the order Eubacteriales that ferment diverse plant polysaccharides to short-chain fatty acids and alcohols (ethanol). These bacteria are among the most abundant taxa in the rumen and the human gut microbiota. Members of this family may protect against colon cancer in humans by producing butyric acid. Lachnospiraceae have been found to contribute to diabetes in genetically susceptible (ob/ob) germ-free mice.
Falsiporphyromonas endometrii is an anaerobic bacterium from the genus of Falsiporphyromonas which has been isolated from the post-partum bovine uterus of a holstein cow in Klein Bennebek in Germany.
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 cangingivalis is a bacterium from the genus Porphyromonas which occur in the periodontal pockets of dogs. Porphyromonas cangingivalis can cause periodontitis in animals.
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 gulae is a Gram-negative, anaerobic, non-spore-forming, rod-shaped and non-motile bacterium from the genus Porphyromonas which has been isolated from the gingival sulcus of a wolf in Canada.
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 uenonis is a bacterium from the genus Porphyromonas which has been isolated from a human sacral decubitus ulcer in Los Angeles in the United States.
Porphyromonas levii is a Gram-negative, anaerobic bacterium from the genus Porphyromonas, which has been isolated from a bovine rumen.
Gaiella occulta is a rod-shaped and non-motile bacterium from the genus Gaiella which has been isolated from deep mineral water in Portugal.
Nitriliruptor alkaliphilus is a non-spore-forming and non-motile bacterium from the genus Nitriliruptor which has been isolated from sediments from a soda lake in Siberia in Russia.
Paucisalibacillus is a genus of bacteria from the family of Bacillaceae.
Pelagirhabdus alkalitolerans is a Gram-positive, alkalitolerant, rod-shaped and non-motile bacterium from the genus of Pelagirhabdus which has been isolated from the beach of Pingaleswar in India.
Thermodesulfobium narugense is a sulfate-reducing, strictly anaerobic and moderate thermophilic bacterium from the genus of Thermodesulfobium which has been isolated from a hot spring from Miyagi Prefecture in Japan. This microorganism is nonmotile, rod-shaped, Gram-negative and non-spore-forming.
Dyella soli is a Gram-negative, aerobic, rod-shaped, non-spore-forming and motile bacterium from the genus of Dyella with a polar flagellum which has been isolated from forest soil from the Jeju island on Korea.
