P. asaccharolytica[1] P. bennonis[1] P. cangingivalis[1] P. canoris[1] P. catoniae[1] P. circumdentaria[1] P. crevioricanis[1] P. endodontalis[1] P. gingivalis[1] P. gingivicanis[1] P. gulae[1] P. levii[1] P. macacae[1] P. pasteri[1] P. pogonae[1] P. somerae[1] P. uenonis[1] Porphyromonas is a Gram-negative, non-spore-forming, obligately anaerobic and non-motile genus from the family Porphyromonadaceae.

[5] 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.

[5] P. asaccharolytica, P. endodontalis, P. gingivalis, P. catoniae, P. pasteri, P. somerae, and P. uenonis[5] P. cangingivalis, P. canoris, P. cansulsi, P. circumdentaria, P. crevioricanis, P. gingivicanis, P. salivosa, P. macacae, P. gulae, and P. levii[5] Porphyromonas genus is commonly found in healthy stallion semen <(https://doi.org/10.1016/j.anireprosci.2020.106568)> Porphyromonas have been isolated from manmade and naturally occurring environments.

Most of these species have been detected in manmade environments, including transportation systems, healthcare settings, and indoor facilities; Porphyromonas persist in naturally occurring environments such as air, soil, seawater, freshwater, agricultural sites, and alpine meadows to a lesser extent.

Alterations in Porphyromonas abundance have also been associated with various cancers, autoimmune and neurodegenerative conditions,[6] vaginal diseases, rheumatoid arthritis, and Sjogren's syndrome.