Acetofilamentum is a genus in the phylum Bacteroidota (Bacteria).
Thermoanaerobacter is a genus in the phylum Bacillota (Bacteria). Members of this genus are thermophilic and anaerobic, several of them were previously described as Clostridium species and members of the now obsolete genera Acetogenium and Thermobacteroides
Acidiphilium is a genus in the phylum Pseudomonadota (Bacteria). As the name suggests, this comprises a nutritionally diverse genus of bacteria adapted to life in extremely acidic conditions, and often exhibiting FeIII reduction.
Acidisoma is a genus in the phylum Pseudomonadota (Bacteria). It contains two species, Acidisoma tundrae and Acidisoma sibiricum, both two acidophilic and psychrotolerant (2–30 °C) bacteria with poly-β-hydroxybutyrate granules, isolated from acidic Sphagnum-dominated tundra and Siberian wetlands in Russia.
Actinospica is a genus in the phylum Actinomycetota (Bacteria).
Adhaeribacter is a genus in the phylum Bacteroidota (Bacteria).
Dactylosporangium is a genus of bacteria in the phylum Actinomycetota.
Dehalogenimonas is a genus in the phylum Chloroflexota (Bacteria). Members of the genus Dehalogenimonas can be referred to as dehalogenimonads.
Deinobacterium is a genus in the Deinococcota phylum (Bacteria). Not to be confused with Deinobacter, a disused name for Deinococcus.
Denitratisoma is a genus in the phylum Pseudomonadota (Bacteria).
Agarivorans is a genus in the phylum Pseudomonadota (Bacteria).
Akkermansia is a genus in the phylum Verrucomicrobiota (Bacteria). The genus was first proposed by Derrien et al. (2004), with the type species Akkermansia muciniphila.
Algoriphagus is a genus in the phylum Bacteroidota (Bacteria).
Algibacter is a genus in the phylum Bacteroidota (Bacteria).
Alistipes is a Gram-negative genus of rod-shaped anaerobic bacteria in the phylum Bacteroidota. When members of this genus colonize the human gastrointestinal (GI) tract, they provide protective effects against colitis, autism, and cirrhosis. However, this genus can also cause dysbiosis by contributing to anxiety, chronic fatigue syndrome, depression, and hypertension. Showcasing priority effects in microbiome assembly, when infant GI tracts have bacteria of the species Staphylococcus but not the species Faecalibacterium, Alistipes species become less capable of colonization.
Alkalibaculum is a genus in the phylum Bacillota (Bacteria).
Cryptosporangium is a genus of bacteria in the phylum Actinomycetota.
Aestuariimicrobium is a singleton genus in the phylum Actinomycetota (Bacteria), whose first member, namely Aestuariimicrobium kwangyangense, was isolated from a diesel contaminated coastal site. Like all Actinobacteria, it is gram-positive and with a high CG content (69%). It is rod/coccoid shaped bacterium whose main quinone is menaquinone-7 (MK7).
The altered Schaedler flora (ASF) is a community of eight bacterial species: two lactobacilli, one Bacteroides, one spiral bacterium of the Flexistipes genus, and four extremely oxygen sensitive (EOS) fusiform-shaped species. The bacteria are selected for their dominance and persistence in the normal microflora of mice, and for their ability to be isolated and grown in laboratory settings. Germ-free animals, mainly mice, are colonized with ASF for the purpose of studying the gastrointestinal (GI) tract. Intestinal mutualistic bacteria play an important role in affecting gene expression of the GI tract, immune responses, nutrient absorption, and pathogen resistance. The standardized microbial cocktail enabled the controlled study of microbe and host interactions, role of microbes, pathogen effects, and intestinal immunity and disease association, such as cancer, inflammatory bowel disease, diabetes, and other inflammatory or autoimmune diseases. Also, compared to germfree animals, ASF mice have fully developed immune system, resistance to opportunistic pathogens, and normal GI function and health, and are a great representation of normal mice.
Mariniflexile is a genus in the phylum Bacteroidota (Bacteria). The various species have been recovered from sea water, sea urchins, springs, brackish water, and an oyster.
