| Mycoplasmatota | |
|---|---|
Scientific classification  | |
| Domain: | Bacteria |
| Clade: | Terrabacteria |
| Phylum: | Mycoplasmatota Murray 2021 [1] [2] |
| Classes [3] | |
| Synonyms | |
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Mycoplasmatota is a phylum of bacteria that contains the class Mollicutes. The phylum was originally named "Tenericutes" (tener cutis: soft skin). [4] [5] [6] Notable genera include Mycoplasma , Spiroplasma , Ureaplasma , and Candidatus Phytoplasma.
The phylum Bacteroidota is composed of three large classes of Gram-negative, nonsporeforming, anaerobic or aerobic, and rod-shaped bacteria that are widely distributed in the environment, including in soil, sediments, and sea water, as well as in the guts and on the skin of animals.
Mollicutes is a class of bacteria distinguished by the absence of a cell wall. The word "Mollicutes" is derived from the Latin mollis, and cutis. Individuals are very small, typically only 0.2–0.3 μm in size and have a very small genome size. They vary in form, although most have sterols that make the cell membrane somewhat more rigid. Many are able to move about through gliding, but members of the genus Spiroplasma are helical and move by twisting. The best-known genus in the Mollicutes is Mycoplasma. Colonies show the typical "fried-egg" appearance.
The Bacillales are an order of Gram-positive bacteria, placed within the Bacillota. The Bacillales are the most productive order of the phylum Firmicutes. Representative genera include Bacillus, Listeria and Staphylococcus.
The Listeriaceae are a family of Gram-positive bacteria that includes two genera: Listeria and Brochothrix. They are short, rod-shaped bacteria that are aerobic or facultatively anaerobic. Spores are not formed, but under stress these bacteria can form filaments. Some species, namely Listeria monocytogenes, can cause human and animal listeriosis. While not all bacteria in the Listeriaceae family are considered a danger to humans, some are strongly associated with food borne illness or microbial spoilage, so they remain a topic of interest in agricultural industries.
The Paenibacillaceae are a family of Gram-positive bacteria.
The Enterococcaceae are a family of Gram-positive bacteria placed in the order Lactobacillales. Representative genera include Enterococcus, Melissococcus, Pilibacter, Tetragenococcus, and Vagococcus. In this family are some important lactic acid bacteria which produce lactic acid as the major metabolic end product.
The Myxococcota are a phylum of bacteria known as the fruiting gliding bacteria. All species of this group are Gram-negative. They are predominantly aerobic genera that release myxospores in unfavorable environments.
Gracilicutes is a clade in bacterial phylogeny.
Bacteroidales is an order of bacteria. Notably it includes the genera Prevotella and Bacteroides, which are commonly found in the human gut microbiota.
The Sphingobacteriales is an order of environmental bacteria.
Bergey's Manual of Systematic Bacteriology is the main resource for determining the identity of prokaryotic organisms, emphasizing bacterial species, using every characterizing aspect.
The Negativicutes are a class of bacteria in the phylum Bacillota, whose members have a peculiar cell wall with a lipopolysaccharide outer membrane which stains gram-negative, unlike most other members of the Bacillota. Although several neighbouring Clostridia species also stain gram-negative, the proteins responsible for the unusual diderm structure of the Negativicutes may have actually been laterally acquired from Pseudomonadota. Additional research is required to confirm the origin of the diderm cell envelope in the Negativicutes.
Jeotgalicoccus pinnipedialis is a gram-positive bacterium. It belongs to the Staphylococcaceae. The cells are coccoid. It was found in the swab of the mouth of a Southern elephant seal.
Lentibacillus juripiscarius is an aerobic, spore-forming, Gram-positive, moderately halophilic bacteria, with type strain IS40-3T.
The Marinilabiliaceae are a family of bacteria.
Turicibacter is a genus in the Bacillota phylum of bacteria that has most commonly been found in the guts of animals. The genus is named after the city in which it was first isolated, Zurich, Switzerland.
Halobacteroides is a Gram-negative strictly anaerobic, chemoorganotrophic genus of bacteria from the family of Halobacteroidaceae.
Saprospirales is an order of bacteria in the phylum Bacteroidota.
Planctomycetia is a class of aquatic bacteria.
The "Acidobacteriia" is a class of Acidobacteriota.