Mycobacterium is a genus of over 190 species in the phylum Actinomycetota, assigned its own family, Mycobacteriaceae. This genus includes pathogens known to cause serious diseases in mammals, including tuberculosis and leprosy in humans. The Greek prefix myco- means 'fungus', alluding to this genus' mold-like colony surfaces. Since this genus has cell walls with a waxy lipid-rich outer layer containing high concentrations of mycolic acid, acid-fast staining is used to emphasize their resistance to acids, compared to other cell types.
Mycobacterium smegmatis is an acid-fast bacterial species in the phylum Actinomycetota and the genus Mycobacterium. It is 3.0 to 5.0 μm long with a bacillus shape and can be stained by Ziehl–Neelsen method and the auramine-rhodamine fluorescent method. It was first reported in November 1884, who found a bacillus with the staining appearance of tubercle bacilli in syphilitic chancres. Subsequent to this, Alvarez and Tavel found organisms similar to that described by Lustgarten also in normal genital secretions (smegma). This organism was later named M. smegmatis.
Mycolicibacterium aubagnense is a species of the phylum Actinomycetota, belonging to the genus Mycolicibacterium.
Mycobacteroides chelonae is a species of bacteria from the phylum Actinomycetota belonging to the genus Mycobacteroides. Mycobacteroides chelonae is a rapidly growing mycobacterium that is found all throughout the environment, including sewage and tap water. It can occasionally cause opportunistic infections of humans. It is grouped in Runyon group IV.
Mycobacteroides immunogenum is a species of bacteria from the phylum Actinomycetota, belonging to the genus Mycobacteroides.
Mycobacterium kansasii is a bacterium in the Mycobacterium genus. It is an environmental bacteria that causes opportunistic infections in humans, and is one of the leading mycobacterial causes of human disease after tuberculosis and leprosy.
Mycolicibacter nonchromogenicus is an infectious species of bacteria.
Mycolicibacillus trivialis is a species of Mycolicibacillus. It is known to cause relapsing peritonitis.
Mycolicibacter terrae is a slow-growing species of mycobacteria. It is an ungrouped member of the third Runyon. It is known to cause serious skin infections, which are "relatively resistant to antibiotic therapy".
Mycolicibacter is a genus of gram-positive rod-shaped bacteria in the family Mycobacteriaceae from the order Mycobacteriales.
Mycolicibacillus is a genus of Gram-Positive rod-shaped bacteria in the family Mycobacteriaceae from the order Mycobacteriales.
Mycobacteroides is a genus of Gram-Positive rod-shaped bacteria in the family Mycobacteriaceae from the order Mycobacteriales.
Mycobacteroides franklinii is a species of bacteria from the phylum Actinomycetota belonging to the genus Mycobacteroides. Most of the original strains were isolated from clinical specimens in Pennsylvania, but some have been found in conduit water in the Netherlands. In general, human M. franklinii infections present with symptoms similar to an infection with Mycobacteroides abscessus, but it can also be associated with tattoo infections. M. franklinii is also associated with outbreaks of mycobacteriosis in farmed fish. M. fanklinii is susceptible to cefoxitin and bedaquiline.
Mycolicibacter algericus is a species of bacteria from the phylum Actinomycetota that was first isolated from the lung lesion of a goat. It is non-pigmented and grows slowly at 25–42 °C on Löwenstein–Jensen medium. It has also been isolated from freshwater fish, fresh produce, water treatment plant sludge, and a natural cave.
Mycolicibacter engbaekii is a species of bacteria from the phylum Actinomycetota. It is susceptible to amikacin, clarithromycin, ethambutol, linezolid, and rifabutin. It has also been recovered from African tuberculosis patients, water treatment plant sludge, and dairy cattle.
"Mycolicibacter virginiensis" is a species of bacteria from the phylum Actinomycetota. It is susceptible to clarithromycin, ethambutol, rifabutin, and TMP-SMX. It has been isolated from cases of tenosynovitis, swine farm mud, bovine feces, sputum, and diseased dromedaries.
"Mycolicibacter sinensis" is a species of bacteria from the phylum Actinomycetota that was isolated from a human manifesting tuberculosis-like disease. It is susceptible to ethambutol but is resistant to most other anti-tuberculosis drugs. It has also been isolated from domestic and wild animals.
Mycolicibacter minnesotensis is a species of bacteria from the phylum Actinomycetota that was first isolated from a sphagnum peat bog. It is pink-pigmented and grows at 27–34 °C. It has also been isolated from fresh produce and water treatment plant sludge.
Mycolicibacterium agri is a species of bacteria from the phylum Actinomycetota that was first isolated from soil. It is non-pigmented and grows rapidly at 25–45 °C on Ogawa egg medium. It has also been isolated from a human skin infection, and raw milk M. agri is capable of degrading octocrylene.
Mycolicibacterium aichiense is a species of bacteria from the phylum Actinomycetota that was first isolated from soil and from human sputum. It produces pigments when grow in the dark and grows rapidly at 25–37 °C on Ogawa egg medium or Sauton agar medium.
