Mycoplasma

Genus of bacteria

This article is about a genus of bacteria. For the species causing atypical pneumonia, see Mycoplasma pneumoniae.

Not to be confused with Mycobacteria.

It has been suggested that anything not having to do with the current Mycoplasma, i.e. everything except the two Phylogeny trees and the infobox be split out into another article titled Mollicutes. (Discuss) (November 2023)

|

Mycoplasma

Mycoplasma haemofelis
Scientific classification
Domain:  | Bacteria
Kingdom:  | Bacillati
Phylum:  | Mycoplasmatota
Class:  | Mollicutes
Order:  | Mycoplasmatales
Family:  | Mycoplasmataceae
Genus:  | Mycoplasma
J.Nowak 1929
Type species
Mycoplasma mycoides

(Borrel et al. 1910) Freundt 1955 (Approved Lists 1980)

Species

See text

Synonyms

* "Asterococcus" Borrel et al. 1910 non Scherffel 1908 non Borkhsenius 1960
* "Asteromyces" Wroblewski 1931 non Moreau & Moreau ex Hennebert 1962
* "Borrelomyces" Turner 1935
* "Bovimyces" Sabin 1941
* Haemobartonella Tyzzer & Weinman 1939
* "Pleuropneumonia" Tulasne & Brisou 1955

Medical condition

Mycoplasmosis

Specialty| Infectious disease

Mycoplasma is a genus of bacteria that, like the other members of the class Mollicutes, lack a cell wall, and its peptidoglycan, around their cell membrane.[1] The absence of peptidoglycan makes them naturally resistant to antibiotics such as the beta-lactam antibiotics that target cell wall synthesis. They can be parasitic or saprotrophic. Several species are pathogenic in humans, including M. pneumoniae, which is an important cause of "walking" pneumonia and other respiratory disorders, and M. genitalium, which is believed to be involved in pelvic inflammatory diseases. Mycoplasma species (like the other species of the class Mollicutes) are among the smallest organisms yet discovered,[2] can survive without oxygen, and come in various shapes. For example, M. genitalium is flask-shaped (about 300 x 600 nm), while M. pneumoniae is more elongated (about 100 x 1000 nm), many Mycoplasma species are coccoid. Hundreds of Mycoplasma species infect animals.[3]

In casual speech, the name "mycoplasma" (plural mycoplasmas or mycoplasms) generally refers to all members of the class Mollicutes. In formal scientific classification, the designation Mycoplasma refers exclusively to the genus, a member of the Mycoplasmataceae, the only family in the order Mycoplasmatales (see "scientific classification").

## Etymology

[edit]

The term "mycoplasma", from the Greek μύκης, mykes (fungus) and πλάσμα, plasma (formed), was first used by Albert Bernhard Frank in 1889 to describe an altered state of plant cell cytoplasm resulting from infiltration by fungus-like microorganisms.[4][5] Julian Nowak later proposed the name mycoplasma for certain filamentous microorganisms imagined to have both cellular and acellular stages in their lifecycles, which could explain how they were visible with a microscope, but passed through filters impermeable to other bacteria.[6] Later, the name for these mycoplasmas was pleuropneumonia-like organisms (PPLO), broadly referring to organisms similar in colonial morphology and filterability to the causative agent (a Mycoplasma species) of contagious bovine pleuropneumonia.[7] At present, all these organisms are classified as Mollicutes, and the term Mycoplasma solely refers to the genus.[citation needed]

## Characteristics

[edit]

Over 100 species have been included in the genus Mycoplasma, a member of the class Mollicutes. They are parasites or commensals of humans, animals, and plants. The genus Mycoplasma uses vertebrate and arthropod hosts.[8] Dietary nitrogen availability has been shown to alter codon bias and genome evolution in Mycoplasma and the plant parasites Phytoplasma.[9]

Mycoplasma species are among the smallest free-living organisms (about 0.2–0.3 μm in diameter).[10][11] They have been found in the pleural cavities of cattle suffering from pleuropneumonia. These organisms are often called MLO (mycoplasma-like organisms) or, formerly, PPLO (pleuropneumonia-like organisms).[7]

### Important characteristics

[edit]

1. Cell wall is absent and plasma membrane forms the outer boundary of the cell.
2. Due to the absence of cell walls these organisms can change their shape and leads to pleomorphism.
3. Lack of nucleus and other membrane-bound organelles.
4. Genetic material is a single DNA duplex and is naked.
5. Ribosomes are 70S type.
6. Possess a replicating disc at one end which assists replication process and also the separation of the genetic materials.
7. Heterotrophic nutrition. Some live as saprophytes but the majority are parasites of plants and animals. The parasitic nature is due to the inability of mycoplasmal bacteria to synthesise the required growth factor.

### Cell and colony morphology

[edit]

Due to the lack of a rigid cell wall, Mycoplasma species (like all Mollicutes) can contort into a broad range of shapes, from round to oblong. They are pleomorphic and therefore cannot be identified as rods, cocci or spirochetes.[12]

Colony morphology of Mycoplasma on Hayflick agar

Colonies show the typical "fried egg" appearance (about 0.5 mm in diameter).[11]

### Reproduction

[edit]

In 1954, using phase-contrast microscopy, continual observations of live cells have shown that Mycoplasma species ("mycoplasmas", formerly called pleuropneumonia-like organisms, PPLO, now classified as Mollicutes) and L-form bacteria (previously also called L-phase bacteria) do not proliferate by binary fission, but by a uni- or multi-polar budding mechanism. Microphotograph series of growing microcultures of different strains of PPLOs, L-form bacteria and, as a control, a Micrococcus species (dividing by binary fission) have been presented.[11] Additionally, electron microscopic studies have been performed.[13]

## Taxonomy

[edit]

### History of taxonomy

[edit]

Previously,[when?] Mycoplasma species (often commonly called "mycoplasmas", now classified as Mollicutes) were sometimes considered stable L-form bacteria or even viruses, but phylogenetic analysis has identified them as bacteria that have lost their cell walls in the course of evolution.[14]

The medical and agricultural importance of members of the genus Mycoplasma and related genera have led to the extensive cataloging of many of these organisms by culture, serology, and small sub-unit rRNA gene and whole-genome sequencing. A recent focus in the sub-discipline of molecular phylogenetics has both clarified and confused certain aspects of the organization of the class Mollicutes.[15]

Taxonomists once[when?] classified Mycoplasma and relatives in the phylum Firmicutes, consisting of low G+C Gram-positive bacteria such as Clostridium, Lactobacillus, and Streptococcus; but modern polyphasic analyses situate them in the phylum Tenericutes.[16]

By the 1990s, it had become readily apparent that this approach was problematic: the type species, M. mycoides, along with other significant mycoplasma species like M. capricolum, is evolutionarily more closely related to the genus Spiroplasma in the order Entomoplasmatales than to the other members of the genus Mycoplasma. As a result, if the group was to be rearranged to match phylogeny, a number of medically important species (e.g. M. pneumoniae, M. genitalium) would have to be put in a different genus, causing widespread confusion in medical and agricultural communities. The genus was discussed multiple times by the International Committee on Systematic Bacteriology's (ICSB) subcommittee on Mollicutes between 1992 and 2011, to no effect.[17]

Regardless of taxonomy, by 2007 it was solidly known that Molicutes could be divided into four nontaxonomic lineages.[18][19]

* An "Acholeplasma" group consisting of Acholeplasmatales. This group is non-problematic, as it contains no species classified in what was then "Mycoplasma".
* A "Spiroplasma" or mycoides group containing M. mycoides and the aforementioned closely-related species in "Spiroplasma" and Entomoplasmatales.
* A pneumoniae group containing M. pneumoniae and closely-related species (M. muris, M. fastidiosum, U. urealyticum), the currently unculturable haemotrophic mollicutes, informally referred to as haemoplasmas (recently transferred from the genera Haemobartonella and Eperythrozoon), and Ureaplasma. This medically important group contains M. alvi (bovine), M. amphoriforme (human), M. gallisepticum (avian), M. genitalium (human), M. imitans (avian), M. pirum (uncertain/human), M. testudinis (tortoises), and M. pneumoniae (human). Most, if not all, of these species share some otherwise unique characteristics including an attachment organelle, homologs of the M. pneumoniae cytadherence-accessory proteins, and specialized modifications of the cell division apparatus.
* A hominis group containing M. hominis, M. bovis, and M. pulmonis among others.

### As of 2018

[edit]

In 2018, Gupta et al. re-circumscribed the genus Mycoplasma around M. mycoides. A total of 78 species were removed from Mycoplasma, creating five new genera and a number of higher taxonomic levels. Under this new scheme, a new family Mycoplasmoidaceae was created to correspond to the "pneumoniae" group, with M. pneumoniae and related species transferred to a new genus Mycoplasmoides. Another new family Metamycoplasmataceae was created to correspond to the "hominis" group. Both families belong to a new order Mycoplasmoitales, distinct from the Mycoplasmatales of Mycoplasma.[19] The taxonomy was accepted by the ICSB with validation list 184 in 2018 and became the correct name. Both List of Prokaryotic names with Standing in Nomenclature (LPSN)[17] and National Center for Biotechnology Information (NCBI) now use the new nomenclature.[20]

Gupta's proposed taxonomy, as expected, moved the medically important "pneumoniae" group out of Mycoplasma into its own genus. As a result, a number of mycoplasmologists petitioned to the ICSB to reject the name in 2019. They argue that although Gupta's phylogenetic methods were likely solid, the proposed name changes are too sweeping to be practically adopted, citing some principles of the Code such as "name stability".[21] Gupta and Oren wrote a rebuttal in 2020, further detailing the pre-existing taxonomic problems.[22][23] In 2022, the ICSP's Judicial Opinion 122 ruled in favor of the name changes proposed by Gupta, meaning they remain valid under the Prokaryotic Code[24] (and for the purpose of the LPSN, they remain the "correct names").[23] However, the older names also remain valid; their use remains acceptable under the Code.[24]

Gupta et al. 2019 performed some uncontroversial sorting of the order Mycoplasmatales.[25]

Phylogenies of Mycoplasma sensu stricto/sensu Gupta 16S rRNA based LTP_10_2024[26][27][28] | 120 marker proteins based GTDB 09-RS220[29][30][31]

|

| Mycoplasma s.s.  |

|  |

|  |

M. putrefaciens Tully et al. 1974

|

|  |

M. cottewii Da Massa et al. 1994

|

M. yeatsii Da Massa et al. 1994

|  |

M. capri (Edward 1953) Hudson, Cottew & Adler 1967 non El Nasri 1966

|

|  |

M. mycoides (Borrel et al. 1910) Freundt 1955

|

|  |

M. capricolum Tully et al. 1974

|

|  |

M. capricolum capripneumoniae Leach, Erno & MacOwan 1993

|

M. leachii Manso-Silván et al. 2009

| Mycoplasma s.s.  |

|  |

|  |

M. putrefaciens

|

|  |

M. cottewii

|

M. yeatsii

|  |

M. feriruminatoris Fischer et al. 2015[32]

|

|  |

|  |

M. capri

|

M. mycoides

|  |

M. capricolum

|

M. leachii

Unassigned species:

* "Ca. M. aoti" Barker et al. 2011
* "M. bradburyae" Ramírez et al. 2023
* "Ca. M. corallicola" Neulinger et al. 2009
* "Ca. M. coregoni" corrig. Rasmussen et al. 2021
* "Ca. M. didelphidis" corrig. Pontarolo et al. 2021
* "Ca. M. erythrocervae" Watanabe et al. 2010
* "Ca. M. haematobrackenitadaridae" Becker et al. 2025
* "Ca. M. haematocervi" corrig. Watanabe et al. 2010
* "Ca. M. haematodidelphidis" corrig. Messick et al. 2002
* "Ca. M. haematohominis" corrig. Millán et al. 2015
* "Ca. M. haematohydrochoeri" corrig. Vieira et al. 2021
* "Ca. M. haematomacacae" corrig. Maggi et al. 2013
* "Ca. M. haematominiopteri" corrig. Millán et al. 2015
* "Ca. M. haematomolossi" Becker et al. 2025
* "M. haematomyotis" Volokhov et al. 2023
* "Ca. M. haematonasuae" corrig. Collere et al. 2021
* "Ca. M. haematoparvum" Sykes et al. 2005
* "M. haematophyllostomi" Volokhov et al. 2023
* "Ca. M. haematoselmanitadaridae" Becker et al. 2025
* "Ca. M. haematosphigguri" corrig. Valente et al. 2021
* "Ca. M. haematotapirus" Mongruel et al. 2022
* "Ca. M. haematoterrestris" Mongruel et al. 2022
* "Ca. M. haematotraderitadaridae" Becker et al. 2025
* "Ca. M. haematovis" corrig. Hornok et al. 2009
* "Ca. M. haemobovis" Meli et al. 2010
* "Ca. M. haemomeles" Harasawa, Orusa & Giangaspero 2014
* "Ca. M. haemomuris" (Mayer 1921) Neimark et al. 2002
* "Ca. M. haemoparvum" Kenny et al. 2004
* M. hafezii Ziegler et al. 2019
* "Ca. M. hemominiopterus" Millán et al. 2015
* "M. incognitus" Lo et al. 1989
* "M. insons" May et al. 2007
* "Ca. M. kahanei" Neimark et al. 2002
* "M. monodon" Ghadersohi & Owens 1998
* M. phocimorsus Skafte-Holm et al. 2023
* "M. pneumophila" Lyerova et al. 2008
* "Ca. M. ravipulmonis" Neimark, Mitchelmore & Leach 1998
* "Ca. M. salmoniarum" corrig. Rasmussen et al. 2021
* "M. sphenisci" Frasca et al. 2005
* "M. timone" Greub & Raoult 2001
* "Ca. M. tructae" Sanchez et al. 2020
* "Ca. M. turicense" corrig. Willi et al. 2006
* "M. volis" Dillehay et al. 1995
* "M. vulturii" Oaks et al. 2004

## Laboratory contaminant

[edit]

Mycoplasma species are often found in research laboratories as contaminants in cell culture. Mycoplasmal cell culture contamination occurs due to contamination from individuals or contaminated cell culture medium ingredients.[33] Mycoplasma cells are physically small – less than 1 μm, so are difficult to detect with a conventional microscope.[citation needed]

Mycoplasmae may induce cellular changes, including chromosome aberrations, changes in metabolism and cell growth. Severe Mycoplasma infections may destroy a cell line. Detection techniques include DNA probe, enzyme immunoassays, PCR, plating on sensitive agar and staining with a DNA stain including DAPI or Hoechst.[34]

An estimated 11–15% of U.S. laboratory cell cultures are contaminated with mycoplasma. A Corning study showed that half of U.S. scientists did not test for Mycoplasma contamination in their cell cultures. The study also stated that, in former Czechoslovakia, 100% of cell cultures that were not routinely tested were contaminated while only 2% of those routinely tested were contaminated (study p. 6). Since the U.S. contamination rate was based on a study of companies that routinely checked for Mycoplasma, the actual contamination rate may be higher. European contamination rates are higher and that of other countries are higher still (up to 80% of Japanese cell cultures).[35] About 1% of published Gene Expression Omnibus data may have been compromised.[36][37] Several antibiotic-containing formulations of antimycoplasmal reagents have been developed over the years.[38]

## Synthetic mycoplasma genome

[edit]

A chemically synthesized genome of a mycoplasmal cell based entirely on synthetic DNA which can self-replicate has been referred to as Mycoplasma laboratorium.[39] It is therefore a model for a minimal genome, that is, a genome that is reduced to mostly essential genes.

## Species which infect humans

[edit]

Species of Mycoplasma, other than those listed below, have been recovered from humans, but are assumed to have been contracted from a non-human host. The following species use humans as the primary host:[citation needed]

* M. amphoriforme
* M. buccale
* M. faucium
* M. fermentans
* M. genitalium
* M. hominis
* M. incognitus
* M. lipophilum
* M. orale
* M. penetrans
* M. pirum
* M. pneumoniae
* M. primatum
* M. salivarium
* M. spermatophilum[40]

## Pathogenicity

[edit]

Several Mycoplasma species can cause disease, including M. pneumoniae, which is an important cause of atypical pneumonia (formerly known as "walking pneumonia"), and M. genitalium, which has been associated with pelvic inflammatory diseases. Mycoplasma infections in humans are associated with skin eruptions in 17% of cases.[41]: 293

### P1 antigen

[edit]

The P1 antigen is the primary virulence factor of mycoplasma, specifically the Pneumoniae group. P1 is a membrane associated protein that allows adhesion to epithelial cells. The P1 receptor is also expressed on erythrocytes which can lead to autoantibody agglutination from mycobacteria infection.[42]

### Sexually transmitted infections

[edit]

Mycoplasma and Ureaplasma species are not part of the normal vaginal flora. Some Mollicutes species are spread through sexual contact.[43] These species have a negative effect on fertility.[43] Mollicutes species colonizing the human genital tract are:[43]

* U. urealyticum
* M. hominis
* M. genitalium
* M. penetrans
* M. primatum (considered nonpathogenic)
* M. spermatophilum (considered nonpathogenic)

M. hominis causes male sterility/Genitals inflammation in humans.[citation needed]

Mycoplasma species have been isolated from women with bacterial vaginosis.[3] M. genitalium is found in women with pelvic inflammatory disease.[44] In addition, infection is associated with increased risk of cervicitis, infertility, preterm birth and spontaneous abortion.[45] Mycoplasma genitalium has developed resistance to some antibiotics.[46]

#### Infant disease

[edit]

Low birth-weight, preterm infants are susceptible to Mycoplasma and Ureaplasma infections.[40] Mycoplasma species are associated with infant respiratory distress syndrome, bronchopulmonary dysplasia, and intraventricular hemorrhage in preterm infants.[3]

### Links to cancer

[edit]

Several species of Mycoplasma are frequently detected in different types of cancer cells.[47][48][49] These species are:

* M. fermentans[47][48][49][50][51][52]
* M. genitalium[53]
* M. hyorhinis[47][53][54]
* M. penetrans[47][48][49][50][52]
* U. urealyticum[55]

The majority of these Mycoplasma species have shown a strong correlation to malignant transformation in mammalian cells in vitro.

#### infection and host cell transformation

[edit]

The presence of Mycoplasma was first reported in samples of cancer tissue in the 1960s.[49] Since then, several studies tried to find and prove the connection between Mycoplasma and cancer, as well as how the bacterium might be involved in the formation of cancer.[48] Several studies have shown that cells that are chronically infected with the bacteria go through a multistep transformation. The changes caused by chronic mycoplasmal infections occur gradually and are both morphological and genetic.[48] The first visual sign of infection is when the cells gradually shift from their normal form to sickle-shaped. They also become hyperchromatic due to an increase of DNA in the nucleus of the cells. In later stages, the cells lose the need for solid support to grow and proliferate,[56] as well as the normal contact-dependent inhibition cells.[49]

#### Possible intracellular mechanisms

[edit]

##### Karyotypic changes related to infections

[edit]

Cells infected with Mycoplasma for an extended period of time show significant chromosomal abnormalities. These include the addition of chromosomes, the loss of entire chromosomes, partial loss of chromosomes, and chromosomal translocation. All of these genetic abnormalities may contribute to the process of malignant transformation. Chromosomal translocation and extra chromosomes help create abnormally high activity of certain proto-oncogenes, which caused by these genetic abnormalities and include those encoding c-myc, HRAS,[50] and vav.[48] The activity of proto-oncogenes is not the only cellular function that is affected; tumour suppressor genes are affected by the chromosomal changes induced by mycoplasma, as well. Partial or complete loss of chromosomes causes the loss of important genes involved in the regulation of cell proliferation.[49] Two genes whose activities are markedly decreased during chronic infections with mycoplasma are the Rb and the p53 tumour suppressor genes.[48] Another possible mechanism of carcinogenesis is RAC1 activation by a small GTPase-like protein fragment of Mycoplasma.[57] A major feature that differentiates mycoplasmas from other carcinogenic pathogens is that the mycoplasmas do not cause the cellular changes by insertion of their own genetic material into the host cell.[50] The exact mechanism by which the bacterium causes the changes is not yet known.[citation needed]

##### Partial reversibility of malignant transformations

[edit]

The malignant transformation induced by Mycoplasma species is also different from that caused by other pathogens in that the process is reversible. The state of reversal is, however, only possible up to a certain point during the infection. The window of time when reversibility is possible varies greatly; it depends primarily on the Mycoplasma involved. In the case of M. fermentans, the transformation is reversible until around week 11 of infection and starts to become irreversible between weeks 11 and 18.[49] If the bacteria are killed using antibiotics[49] (i.e. ciprofloxacin[48] or Clarithromycin[58]) before the irreversible stage, the infected cells should return to normal.

#### Connections to cancer in vivo and future research

[edit]

Epidemiologic, genetic, and molecular studies suggest infection and inflammation initiate certain cancers, including those of the prostate. M. genitalium and M. hyorhinis induce malignant phenotype in benign human prostate cells (BPH-1) that were not tumorigenic after 19 weeks of exposure.[53]

#### Types of cancer associated

[edit]

Colon cancer: In a study to understand the effects of Mycoplasma contamination on the quality of cultured human colon cancer cells, a positive correlation was found between the number of M. hyorhinis cells present in the sample and the percentage of CD133-positive cells (a glycoprotein with an unknown function).[59]

Gastric cancer: Strong evidence indicates the infection of M. hyorhinis contributes to the development of cancer within the stomach and increases the likelihood of malignant cancer cell development.[60]

Lung cancer: Studies on lung cancer have supported the belief that more than a coincidental positive correlation exists between the appearance of Mycoplasma strains in patients and the infection with tumorigenesis.[61]

Prostate cancer: p37, a protein encoded for by M. hyorhinis, has been found to promote the invasiveness of prostate cancer cells. The protein also causes the growth, morphology, and gene expression of the cells to change, causing them to become a more aggressive phenotype.[62]

Renal cancer: Patients with renal cell carcinoma (RCC) exhibited a significantly high amount of Mycoplasma sp. compared with the healthy control group. This suggests Mycoplasma may play a role in the development of RCC.[58]

## See also

[edit]

* International Organization for Mycoplasmology (IOM)
* Sexually transmitted disease
* Vaginal flora
* Vaginal infection
* Vaginal disease
* Vaginal health
* Phytoplasma
* Smallest organisms
* List of bacterial orders
* List of bacteria genera
* Mycoplasma alligatori

## References

[edit]

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23. ^ a b "Genus: Mycoplasmoides". lpsn.dsmz.de.; see also LPSN FAQ on correct name
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27. ^ "LTP_all tree in newick format". Retrieved 10 December 2024.
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44. ^ Wiesenfeld HC, Manhart LE (15 July 2017). "Mycoplasma genitalium in Women: Current Knowledge and Research Priorities for This Recently Emerged Pathogen". The Journal of Infectious Diseases. 216 (suppl_2): S389 – S395. doi:10.1093/infdis/jix198. ISSN 1537-6613. PMC 5853983. PMID 28838078.
45. ^ Lis R, Rowhani-Rahbar A, Manhart LE (2015). "Mycoplasma genitalium Infection and Female Reproductive Tract Disease: A Meta-Analysis". Clinical Infectious Diseases. 61 (3): 418–426\. doi:10.1093/cid/civ312. hdl:1773/26479. ISSN 1058-4838. PMID 25900174.
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49. ^ a b c d e f g h Tsai S, Wear DJ, Shih JW, Lo SC (October 1995). "Mycoplasmas and oncogenesis: Persistent infection and multistage malignant transformation". Proceedings of the National Academy of Sciences of the United States of America. 92 (22): 10197–10201\. Bibcode:1995PNAS...9210197T. doi:10.1073/pnas.92.22.10197. PMC 40763. PMID 7479753.
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51. ^ Jiang S, Zhang S, Langenfeld J, Lo SC, Rogers MB (May 2008). "Mycoplasma infection transforms normal lung cells and induces bone morphogenetic protein 2 expression by post-transcriptional mechanisms". Journal of Cellular Biochemistry. 104 (2): 580–594\. doi:10.1002/jcb.21647. PMID 18059017. S2CID 23871175.
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57. ^ Hu X, Yu J, Zhou X, Li Z, Xia Y, Luo Z, Wu Y (January 2014). "A small GTPase-like protein fragment of Mycoplasma promotes tumor cell migration and proliferation in vitro via interaction with Rac1 and Stat3". Mol Med Rep. 9 (1): 173–179\. doi:10.3892/mmr.2013.1766. PMID 24172987.
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## External links

[edit]

Classification|

* ICD-11: XN1W2
* ICD-10: A49.3
* ICD-9-CM: 041.81
* MeSH: D009174

|

* Ureaplasma Infection: eMedicine Infectious Diseases

* v
* t
* e

Prokaryotes: Bacteria classification

Domain
Archaea
Bacteria
Eukaryota
(major groups
"Excavata"
Diaphoretickes

Hacrobia

Cryptista
Rhizaria
Alveolata
Stramenopiles
Plants
Amorphea

Amoebozoa
Opisthokonta

Animals
Fungi
Mesomycetozoea)

Candidate Phyla
Radiation|

* "Elulimicrobiota"
* "Elulimicrobia"
* Minisyncoccota
* "Absconditabacteria"
* "Andersenbacteria"
* "Berkelbacteria"
* "Dojkabacteria"
* "Doudnabacteria"
* "Gracilibacteria"
* "Howlettbacteria"
* "Katanobacteria"
* "Kazanbacteria"
* "Microgenomatia"
* Minisyncoccia
* "Patescibacteriia"
* "Saccharimonadia"
* "Torokbacteria"
* "Wirthbacteria"

Thermotogati

* "Bipolaricaulota"
* "Bipolaricaulia"
* Deinococcota
* "Deinococcia"

"Synergistetes"|

* Atribacterota
* Atribacteria
* "Phoenicimicrobiia"
* Synergistota
* Synergistia

"Thermocalda"|

* Caldisericota
* Caldisericia
* Coprothermobacterota
* Coprothermobacteria
* Dictyoglomerota
* Dictyoglomeria
* "Lithacetigenota"
* "Lithacetigenia"
* Thermodesulfobiota
* "Thermodesulfobiia"
* Thermotogota
* "Thermotogia"
* "Zhurongbacterota"

Bacillati

* Actinomycetota
* Acidimicrobiia
* Actinomycetia
* "Aquicultoria"
* Coriobacteriia
* "Geothermincolia"
* "Humimicrobiia"
* Nitriliruptoria
* Rubrobacteria
* Thermoleophilia
* Armatimonadota
* "Abditibacteriia"
* Armatimonadia
* Chthonomonadia
* "Fervidibacteria"
* Fimbriimonadia
* "Heboniibacteriia"
* "Zipacnadia"
* Chloroflexota
* "Caldilineia"
* Chloroflexia
* Dehalococcoidia
* "Dormibacteria"
* Ktedonobacteria
* "Limnocylindria"
* "Martimicrobiia"
* "Poriflexia"
* "Spiritibacteria"
* "Tarhunnaeia"
* "Uliximicrobiia"
* "Sysuimicrobiota"
* "Sysuimicrobiia"
* Vulcanimicrobiota
* "Eudoremicrobiia"
* Vulcanimicrobiia
* "Xenobiia"

Cyanoprokaryota|

* Cyanobacteriota
* Cyanobacteria
* "Sericytochromatia"
* "Vampirovibrionia"
* "Margulisiibacteriota"
* "Marinamargulisbacteria"
* "Riflemargulisbacteria"
* "Saganbacteria"
* "Termititenacia"

"Firmicutes"|

* Bacillota
* "Bacillia"
* Bacillota A
* "Clostridiia"
* "Thermoanaerobacteria"
* Thermosediminibacteria
* Bacillota D
* "Dethiobacteria"
* Natranaerobiia
* "Proteinivoracia"
* Bacillota E
* Sulfobacillia
* Symbiobacteriia
* Thermaerobacteria
* Bacillota G
* "Hydrogenisporia"
* Limnochordia
* "Desulfotomaculota"
* "Carboxydocellia"
* "Carboxydothermia"
* "Dehalobacteriia"
* Desulfitobacteriia
* Desulfotomaculia
* "Moorellia"
* Peptococcia
* Syntrophomonadia
* Thermincolia
* "Halanaerobiaeota"
* "Halanaerobiia"
* "Selenobacteria"
* "Selenomonadia"

Pseudomonadati

| "Sphingobacteria"|

* Bacteroidota
* Bacteroidia
* Chlorobiia
* "Ignavibacteriia"
* "Kapaibacteria"
* "Kryptoniia"
* Rhodothermia
* Calditrichota
* Calditrichia
* "Cloacimonadota"
* "Cloacimonadia"
* "Cosmopoliota"
* "Cosmopolitia"
* "Delongiibacteriota"
* "Edwardsiibacteriota"
* "Effluvivivacota"
* "Eiseniibacteriota"
* "Electryoneota"
* "Electryoneia"
* "Tariuqbacteria"
* "Fermentibacterota"
* "Fermentibacteria"
* Fibrobacterota
* Chitinivibrionia
* Fibrobacteria
* "Raymondbacteriia"
* Gemmatimonadota
* Gemmatimonadia
* "Glassbacteria"
* "Hydrothermota"
* "Hydrothermia"
* "Stahlbacteria"
* "Krumholzibacteriota"
* "Krumholzibacteriia"
* "Heilongiota"
* "Heilongiia"
* "Latescibacterota"
* "Handelsmanbacteria"
* "Latescibacteria"
* "Marinisomatota"
* "Marinisomatia"
* "Zixiibacteriota"
* "Zhuqueibacterota"
* "Zhuqueibacteria"

|

"Planctobacteria"|

* "Abyssobacteria"
* "Aerophobota"
* "Aerophobia"
* "Auribacterota"
* "Ancaeobacteria"
* "Auribacteria"
* "Erginobacteria"
* "Tritonobacteria"
* Chlamydiota
* Chlamydiia
* "Coatesiibacteriota"
* "Desantisiibacteriota"
* Elusimicrobiota
* Elusimicrobiia
* Endomicrobiia
* Fidelibacterota
* Fidelibacteria
* "Firestoneibacteriota"
* "Goldiibacteriota"
* "Heilongiota"
* "Hinthialibacterota"
* "Hinthialibacteria"
* "Hydrogenedentota"
* "Hydrogenedentia"
* "Omnitrophota"
* "Omnitrophia"
* "Velamenicoccia"
* Planctomycetota
* "Brocadiia"
* "Phycisphaeria"
* Planctomycetia
* "Uabimicrobiia"
* "Poribacteriota"
* "Ratteibacteriota"
* "Saltatorellota"
* "Saltatorellae"
* "Sumerlaeota"
* "Sumerlaeia"
* "Tianyaibacteriota"
* Verrucomicrobiota (Kiritimatiellota; Lentisphaerota)
* Kiritimatiellia
* Lentisphaeria
* Verrucomicrobiia

"Proteobacteria"|

* Acidobacteriota
* "Acidobacteriia"
* "Aminicenantia"
* Blastocatellia
* "Fischerbacteria"
* "Guanabaribacteriia"
* "Holophagia"
* "Polarisedimenticolia"
* Thermoanaerobaculia
* Vicinamibacteria
* "Acidulidesulfobacteriota"
* "Acidulodesulfobacteriia"
* Aquificota
* Aquificia
* Desulfurobacteriia
* Bdellovibrionota
* Bacteriovoracia
* Bdellovibrionia
* Oligoflexia
* "Binatota"
* "Binatia"
* "Calescibacteriota"
* "Calescibacteriia"
* Campylobacterota
* "Campylobacteria"
* Desulfurellia
* "Canglongiota"
* "Canglongiia"
* Chrysiogenota
* Chrysiogenia
* "Dadaibacteriota"
* "Dadabacteria"
* Deferribacterota
* "Deferribacteria"
* "Deferrimicrobiota"
* "Deferrimicrobiia"
* "Deferrisomatota"
* Deferrisomatia
* "Leptospirillaeota"
* "Leptospirillia"
* "Lernaellota"
* "Lernaellia"
* "Methylomirabilota"
* "Methylomirabilia"
* "Moduliflexota"
* "Moduliflexia"
* Myxococcota
* Myxococcia
* "Bradymonadia"
* Polyangiia
* "Nitrosediminicolota"
* Nitrospinota
* Nitrospinia
* Nitrospirota
* Nitrospiria
* Thermodesulfovibrionia
* Pseudomonadota
* "Anaeropigmentatia"
* "Caulobacteria"
* Magnetococcia
* "Mariprofundia"
* "Pseudomonadia"
* "Schekmaniibacteriota"
* Desulfobacterota G
* Syntrophorhabdia
* "Tectimicrobiota"
* "Entotheonellia"
* Thermosulfidibacterota
* Thermosulfidibacteria
* Thermodesulfobacteriota
* "Anaeroferrophilia"
* Desulfarculia
* "Desulfatiglandia"
* Desulfobaccia
* Desulfobacteria
* Desulfobulbia
* "Desulfofervidia"
* Desulfomonilia
* Desulfovibrionia
* Desulfuromonadia
* Dissulfuribacteria
* Syntrophobacteria
* Syntrophia
* "Thermodesulfobacteriia"
* "Zymogenia"

Incertae sedis|

* "Babelota"
* "Babeliae"
* Fusobacteriota
* Fusobacteriia
* "Lindowiibacteriota"
* "Macinerneyibacteriota"
* "Macinerneyibacteriia"
* "Muiribacteriota"
* "Muiribacteriia"
* "Rifleibacteriota"
* "Ozemibacteria"
* Spirochaetota
* "Brevinematia"
* "Brachyspirae"
* "Exilispiria"
* "Leptospiria"
* Spirochaetia
* "Walliibacteriota"

Incertae sedis|

* "Qinglongiota"
* "Qinglongiia"
* "Salinosulfoleibacteria"
* "Teskebacteria"

GTDB 09-RS220; LTP_10_2024

* v
* t
* e

Bacterial skin disease

Gram +ve|

| Bacillota|

| Staphylococcus|

* Staphylococcal scalded skin syndrome
* Impetigo
* Toxic shock syndrome

|

Streptococcus|

* Impetigo
* Cutaneous group B streptococcal infection
* Streptococcal intertrigo
* Cutaneous Streptococcus iniae infection
* Erysipelas / Chronic recurrent erysipelas
* Scarlet fever

Corynebacterium|

Erythrasma

Clostridium|

* Gas gangrene
* Dermatitis gangrenosa

Others|

* Listeriosis
* Erysipeloid of Rosenbach
* Mycoplasma

Actinomycetota|

| Mycobacterium-
related|

* Aquarium granuloma
* Borderline lepromatous leprosy
* Borderline leprosy
* Borderline tuberculoid leprosy
* Buruli ulcer
* Erythema induratum
* Histoid leprosy
* Lepromatous leprosy
* Leprosy
* Lichen scrofulosorum
* Lupus vulgaris
* Miliary tuberculosis
* Mycobacterium avium–intracellulare complex infection
* Mycobacterium haemophilum infection
* Mycobacterium kansasii infection
* Papulonecrotic tuberculid
* Primary inoculation tuberculosis
* Rapid growing mycobacterium infection
* Scrofuloderma
* Tuberculosis cutis orificialis
* Tuberculosis verrucosa cutis
* Tuberculous cellulitis
* Tuberculous gumma
* Tuberculoid leprosy

|

Others|

* Cutaneous actinomycosis
* Nocardiosis
* Cutaneous diphtheria infection
* Arcanobacterium haemolyticum infection
* Group JK corynebacterium sepsis

Gram -ve|

| Pseudomonadota|

| Alpha|

* Endemic typhus
* Epidemic typhus
* Scrub typhus
* North Asian tick typhus
* Queensland tick typhus
* Flying squirrel typhus
* Trench fever
* Bacillary angiomatosis
* African tick bite fever
* American tick bite fever
* Rickettsia aeschlimannii infection
* Rickettsialpox
* Rocky Mountain spotted fever
* Human granulocytotropic anaplasmosis
* Human monocytotropic ehrlichiosis
* Flea-borne spotted fever
* Japanese spotted fever
* Mediterranean spotted fever
* Flinders Island spotted fever
* Verruga peruana
* Brill–Zinsser disease
* Brucellosis
* Cat-scratch disease
* Oroya fever
* Ehrlichiosis ewingii infection

|

Beta|

* Gonococcemia/Gonorrhea/Primary gonococcal dermatitis
* Melioidosis
* Cutaneous Pasteurella hemolytica infection
* Meningococcemia
* Glanders
* Chromobacteriosis infection

Gamma|

* Pasteurellosis
* Tularemia
* Vibrio vulnificus
* Rhinoscleroma
* Haemophilus influenzae cellulitis
* Pseudomonal pyoderma / Pseudomonas hot-foot syndrome / Hot tub folliculitis / Ecthyma gangrenosum / Green nail syndrome
* Q fever
* Salmonellosis
* Shigellosis
* Plague
* Granuloma inguinale
* Chancroid
* Aeromonas infection

Campylobacterota|

* Helicobacter cellulitis

Other|

* Syphilid
* Syphilis
* Chancre
* Yaws
* Pinta
* Bejel
* Chlamydia infection
* Leptospirosis
* Rat-bite fever
* Lyme disease
* Lymphogranuloma venereum
* Gram-negative folliculitis
* Gram-negative toe web infection

Unspecified
pathogen|

* Abscess
* Periapical abscess
* Boil/furuncle
* Hospital furunculosis
* Carbuncle
* Cellulitis
* Paronychia / Pyogenic paronychia
* Perianal cellulitis
* Acute lymphadenitis
* Pilonidal cyst
* Pyoderma

* Folliculitis
* Superficial pustular folliculitis
* Sycosis vulgaris
* Pimple
* Ecthyma
* Pitted keratolysis
* Trichomycosis axillaris
* Necrotizing fasciitis
* Gangrene
* Chronic undermining burrowing ulcer
* Fournier gangrene
* Elephantiasis nostras
* Blistering distal dactylitis
* Botryomycosis
* Malakoplakia
* Pyomyositis
* Blastomycosis-like pyoderma
* Bullous impetigo
* Chronic lymphangitis
* Recurrent toxin-mediated perineal erythema
* Tick-borne lymphadenopathy
* Tropical ulcer

Taxon identifiers

Mycoplasma|

* Wikidata: Q210975
* Wikispecies: Mycoplasma
* CoL: 5W5S
* EoL: 83503
* EPPO: 1MYPLG
* GBIF: 3225939
* iNaturalist: 356727
* IRMNG: 1029199
* ITIS: 957646
* LPSN: mycoplasma.html
* NCBI: 2093
* NZOR: dedd2c32-4343-43f0-a9b6-14e90f1edf3b
* Open Tree of Life: 1069988
* WoRMS: 567367

Authority control databases: National |

* Japan
* Czech Republic
* Israel

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