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Genus is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus.
Bacilli is a taxonomic class of bacteria that includes two orders, Bacillales and Lactobacillales, which contain several well-known pathogens such as Bacillus anthracis. Bacilli are almost exclusively gram-positive bacteria.
Chrysiogenaceae is a bacterial family.
The Phyllobacteriaceae are a family of bacteria. The most common genus is Mesorhizobium which contains some of the rhizobia species.
The Clostridia are a highly polyphyletic class of Firmicutes, including Clostridium and other similar genera. They are distinguished from the Bacilli by lacking aerobic respiration. They are obligate anaerobes and oxygen is toxic to them. Species of the class Clostridia are often but not always Gram-positive and have the ability to form spores. Studies show they are not a monophyletic group, and their relationships are not entirely certain. Currently, most are placed in a single order called Clostridiales, but this is not a natural group and is likely to be redefined in the future.
The Thermodesulfobacteria are a phylum of thermophilic sulfate-reducing bacteria.
The family Micrococcaceae includes bacterial genera of Gram positive cocci that inhabit the air and skin, such as Micrococcus luteus.
Haemophilus is a genus of Gram-negative, pleomorphic, coccobacilli bacteria belonging to the family Pasteurellaceae. While Haemophilus bacteria are typically small coccobacilli, they are categorized as pleomorphic bacteria because of the wide range of shapes they occasionally assume. These organisms inhabit the mucous membranes of the upper respiratory tract, mouth, vagina, and intestinal tract. The genus includes commensal organisms along with some significant pathogenic species such as H. influenzae—a cause of sepsis and bacterial meningitis in young children—and H. ducreyi, the causative agent of chancroid. All members are either aerobic or facultatively anaerobic. This genus has been found to be part of the salivary microbiome.
The Bifidobacteriaceae are the only family of bacteria, in the order of Bifidobacteriales. According to the 16S rRNA-based LTP release 106 published by 'The All-Species Living Tree' Project, the order Bifidobacteriales is a clade nested within the suborder Micrococcineae, also the genus Bifidobacterium is paraphyletic to the other genera within the family, i.e. the other genera are nested within Bifidobacterium.
Rubrobacter is a genus of Actinobacteria, given its own subclass (Rubrobacteridae). It is radiotolerant and may rival Deinococcus radiodurans in this regard.
The Staphylococcaceae are a family of Gram-positive bacteria that includes the genus Staphylococcus, noted for encompassing several medically significant pathogens.
The order Bacteroidales comprises ten families of environmental bacteria. Notably it includes the genera Prevotella and Bacteroides, which are commonly found in the human gut microbiota.
Lentisphaerae is a phylum of bacteria closely related to Chlamydiae and Verrucomicrobia.
The phylum Elusimicrobia, previously known as "Termite Group 1", has been shown to be widespread in different ecosystems like marine environment, sewage sludge, contaminated sites and soils, and toxic wastes. The high abundance of 'Elusimicrobia' representatives is only evidenced for the lineage of symbionts found in termites and ants.
Armatimonadetes is a phylum of gram-negative bacteria.
The Thermoleophilia are a newly proposed class of Actinobacteria that was created from the splitting of the Rubrobacteridae, due to its phylogenetic branching order.
Methylorhabdus multivorans is a Gram-negative, aerobic, facultatively methylotrophic nonmotile bacterium from the genus Methylorhabdus. Methylorhabdus multivorans has been isolated from groundwater which was contaminated with dichloromethane in Switzerland.
Rubrobacteria is one of five classes of Actinobacteria that contain one order, one family, one genus, and seven species.
The Acidimicrobiia are a class of Actinobacteria, in which three families, eight genera, and nine species have been described, Acidimicrobium ferrooxidans is the type species of the order.
The Nitriliruptoria are one of five classes of Actinobacteria, which contains four monotypic genera placed in separate orders.
References
- 1 2 3 4 LPSN lpsn.dsmz.de
- ↑ UniProt
- 1 2 George M. Garrity (2001). Bergey's Manual® of Systematic Bacteriology . Springer Science & Business Media. ISBN 0387241450.