Listeria is a genus of bacteria that acts as an intracellular parasite in mammals. Until 1992, 10 species were known, each containing two subspecies. By 2024, 28 species had been identified. The genus is named in honour of the British pioneer of sterile surgery Joseph Lister. Listeria species are Gram-positive, rod-shaped, and facultatively anaerobic, and do not produce endospores. The major human pathogen in the genus Listeria is L. monocytogenes. It is usually the causative agent of the relatively rare bacterial disease listeriosis, an infection caused by eating food contaminated with the bacteria. Listeriosis can cause serious illness in pregnant women, newborns, adults with weakened immune systems and the elderly, and may cause gastroenteritis in others who have been severely infected.
The Vibrionaceae are a family of Pseudomonadota given their own order, Vibrionales. Inhabitants of fresh or salt water, several species are pathogenic, including the type species Vibrio cholerae, which is the agent responsible for cholera. Most bioluminescent bacteria belong to this family, and are typically found as symbionts of deep-sea animals.
Aliivibrio is a genus in the phylum Pseudomonadota (Bacteria).
Campylobacter concisus is a Gram-negative, highly fastidious, mesophilic bacterium that grows under both anaerobic and microaerobic conditions with the presence of hydrogen significantly aiding growth. Motile, with either unipolar or bipolar flagella, the organisms have a characteristic spiral/corkscrew appearance and are oxidase-positive. Although the human oral cavity is the natural colonization site of the bacterium, C. concisus may also colonize the intestinal tract of some individuals. In particular, several studies have reported higher intestinal prevalence of C. concisus in patients with IBD compared to healthy controls, which has led to current speculation of the bacterium's implication in the induction of Crohn's disease.
Vibrio furnissii is a Gram-negative, rod-shaped bacterium. Its type strain is ATCC 35016. V. furnissii is aerogenic (gas-producing), and uses L-rhamnose, L-arginine, L-arabinose, maltose, and D-mannitol, but not L-lysine, L-ornithine, or lactose. It has been isolated from patients with gastroenteritis, bacteremia, skin lesions, and sepsis.
Globicatella sulfidifaciens is a Gram-positive bacteria from the family of Globicatella which has been isolated from the lungs of cattle and lambs in Belgium. It is associated with purulent infections of domestic mammals and urinary tracts of swine. Unlike other Globicatella species and species of related genera, G. sulfidifaciens is PYR negative. Globicatella sulfidifaciens bacteria are resistant against the antibiotics neomycin, erythromycin and clindamycin.
Neptunomonas is an anaerobic and rod-shaped genus of bacteria from the family of Oceanospirillaceae.
Patulibacter is a genus of bacteria from the family Patulibacteraceae.
Caldibacillus is a facultative anaerobe genus of bacteria that stains Gram-positive from the family of Bacillaceae. The type species of this genus is Caldibacillus debilis.
Pontibacillus is a Gram-positive, spore-forming and strictly aerobic genus of bacteria from the family of Bacillaceae.
Salibacterium is a genus of Gram-positive bacteria from the family of Bacillaceae. The type species is Salibacterium halotolerans.
Janibacter is a genus of Gram positive, nonmotile, non-sporeforming bacteria. The genus name is derived from the two-faced Roman god Janus, referring to the fact that the cells of the original strain could be rod-shaped or coccoid.
Bombella is a genus of bacteria from the family of Acetobacteraceae.
Ignatzschineria indica is a Gram-negative, aerobic, non-spore-forming and non-motile bacterium from the genus of Ignatzschineria which has been isolated from the gut content of flesh flies from Pune in India.
Bibersteinia is a Gram-negative and non-motile, genus of bacteria from the family of Pasteurellaceae with one known species. Bibersteinia is named after Ernst L. Biberstein. Bibersteinia trehalosi is a pathogen of sheep and can cause systemic infections in sheep.
Aestuariicella is a rod-shaped, Gram-negative, and strictly aerobic genus of bacteria from the order Alteromonadales with one known species. Aestuariicella hydrocarbonica was first isolated in 2015 from oil spill contaminated tidal flat sediments from the Dangjin bay in Korea. Due to the recent nature of its discovery, its taxonomic classification has not yet been accepted. Future research into its evolutionary history and genome may change the naming of this organism.
Haematomicrobium sanguinis is a species of bacteria from the family Micrococcaceae which has been isolated from human blood in Stockholm, Sweden.
Kushneria indalinina is a moderately halophilic, Gram-negative, aerobic and motile bacterium from the genus of Kushneria which has been isolated from a solar saltern from Cabo de Gata.
Enterovibrio nigricans is a bacterium species from the genus of Enterovibrio which has been isolated from the head kidney of the fish Sparus aurata from the Mediterranean coast in Spain.
Enterovibrio norvegicus is a bacterium species from the genus of Enterovibrio which has been isolated from the gut of the larvae of a flatfish in Norway.
