Escherichia is a genus of Gram-negative, non-spore-forming, facultatively anaerobic, rod-shaped bacteria from the family Enterobacteriaceae. In those species which are inhabitants of the gastrointestinal tracts of warm-blooded animals, Escherichia species provide a portion of the microbially derived vitamin K for their host. A number of the species of Escherichia are pathogenic. The genus is named after Theodor Escherich, the discoverer of Escherichia coli. Escherichia are facultative aerobes, with both aerobic and anaerobic growth, and an optimum temperature of 37 °C. Escherichia are usually motile by flagella, produce gas from fermentable carbohydrates, and do not decarboxylate lysine or hydrolyze arginine. Species include E. albertii, E. fergusonii, E. hermannii, E. ruysiae, E. marmotae and most notably, the model organism and clinically relevant E. coli. Formerly, Shimwellia blattae and Pseudescherichia vulneris were also classified in this genus.
Cryptobacterium is a genus of Actinomycetota, in the family Coriobacteriaceae. Up to now there is only one species of this genus known.
Eggerthella is a bacterial genus of Actinomycetota, in the family Coriobacteriaceae. Members of this genus are anaerobic, non-sporulating, non-motile, Gram-positive bacilli that grow singly, as pairs, or in short chains. They are found in the human colon and feces and have been implicated as a cause of ulcerative colitis, liver and anal abscesses and systemic bacteremia.
Sporohalobacter are a genus of anaerobic bacteria belonging to the family Haloanaerobiaceae. The organisms are spore-forming bacteria that grow in hypersaline environments.
Prevotella melaninogenica is a species of bacterium in the normal microbiota of the upper respiratory tract. It is an important human pathogen in various anaerobic infections, often mixed with other aerobic and anaerobic bacteria. P. melaninogenica is an anaerobic, Gram-negative rod, named for its black colonies, and black pigment.
Actinobacillus is a genus of Gram-negative, nonmotile and non-spore-forming, oval to rod-shaped bacteria occurring as parasites or pathogens in mammals, birds, and reptiles. It is a member of the family Pasteurellaceae. The bacteria are facultatively anaerobic or aerobic, capable of fermenting carbohydrates, and of reducing nitrates. The genomic DNA contains between 40 and 47 mol % guanine plus cytosine.
Propionivibrio dicarboxylicus is a gram negative, strictly anaerobic, non-spore-forming bacterium from the genus of Propionivibrio which was isolated from anaerobic mud from the Lake Kasumigaura in Japan.
Pseudoxanthomonas japonensis is a species of mesophilic, motile, strictly aerobic, Gram-negative, non-spore-forming, rod-shaped bacteria with one polar flagellum, first isolated from human urine, riverside urban soil and anaerobic digester. 12-3T is the type strain.
Thermoanaerobacter siderophilus is a dissimilatory Fe(III)-reducing, anaerobic, thermophilic bacterium that was firstly isolated from the sediment of a hydrothermal vent found near the Karymsky volcano, in the Kamchatka peninsula, Russia. It is spore-forming, with type strain SR4T.
Cryptobacterium curtum is a Gram-positive anaerobic rod bacteria isolated from human mouths.
Peptostreptococcus anaerobius is a species of bacteria belonging to the Peptostreptococcus genus of anaerobic, Gram-positive, non-spore forming bacteria. The cells are small, spherical, and can occur in short chains, in pairs or individually. Peptostreptococcus are slow-growing bacteria sometimes resistance to antimicrobial drugs. P. anaerobius is intrinsically resistant to sodium polyethanol sulfonate (SPS), a component found in many types of blood culture media.
Tessaracoccus is a Gram-positive, non-spore-forming, facultatively anaerobic and non-motile bacterial genus from the family Propionibacteriaceae.
Caminicella is a Gram-negative, anaerobic, thermophilic, heterotrophic, spore-forming, rod-shaped and motile bacterial genus from the family of Clostridiaceae with one known species.
Anaerofustis is a Gram-positive, strictly anaerobic, rod-shaped and non-spore-forming bacterial genus from the family of Eubacteriaceae with one known species. Anaerofustis stercorihominis was isolated from human feces.
Pelospora is a Gram-negative strictly anaerobic and spore-forming bacterial genus from the family of Syntrophomonadaceae with one known species.
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.
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.
Lutispora is an anaerobic, spore-forming, rod-shaped and moderately thermophilic bacterial genus from the family of Clostridiaceae with one known species.
The Eggerthellaceae are a family of Gram-positive, rod- or coccus-shaped Actinomycetota. It is the sole family within the order Eggerthellales.
Aminomonas is a genus of bacteria from the family of Synergistaceae with one known species. Aminomonas paucivorans has been isolated from an anaerobic lagoon of a dairy wastewater treatment plant.
