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a genus of bacteria, related to actinomycetes; it differs from true bacteria in a number of ways. The young vegetative cells are rodlike (0.5–0.8 × 2.2 microns); they are capable of branching and acquiring V or Y shapes. In old cultures spherical cells predominate. Mycobacteria, which do not form endospores, are nonmotile, gram-positive, and strictly aerobic. They reproduce mainly by dividing and budding. Mycobacteria contain carotenoids, and, as a result, their colonies are often pigmented (yellow, orange, or red). Owing to their cell composition (including lipides and wax), some myco-bacteria, in contrast to other bacteria, are acid-fast.

Mycobacteria are widely distributed in soils and are active in the mineralization of plant remains. Some species of Mycobacterium are nitrogen-fixing microorganisms; others are capable of metabolizing the carbohydrates of petroleum and natural gas and, when cultured, accumulate protein, which is used for fodder and other purposes. Some species of Mycobacterium are pathogenic to humans (for example, mycobacteria are the causative agents of tuberculosis and leprosy).


References in periodicals archive ?
The risk of Mycobacterium chimaera infection in patients undergoing open-heart surgery has been estimated as 0.
TBc identification device is based on the detection of a protein (MPT64) secreted by Mycobacterium tuberculosis complex (MTC), can detect Mycobacterium tuberculosis in 15 min from acid-fast bacillus (AFB)-positive MGIT cultures.
Toward eradication: The effect of Mycobacterium bovis infection in wildlife on the evolution and future direction of bovine tuberculosis management in New Zealand.
Molecular basis of intrinsic macrolide resistance in clinical isolates of Mycobacterium fortuitum.
5 The Xpert MTB/RIF detects DNA sequences specific for mycobacterium tuberculosis and rifampicin resistance by polymerase chain reaction.
Previous sampling demonstrated that larger, mature fish showed internal pathology consistent with Mycobacterium infections and were targeted in this collection.
When a positive culture of Mycobacterium species was confirmed, MTB colloidal gold method of kabely kit was used to identify MTB or NTM.
Singh P, Sharma V, Sharma N, Singh D, Kandpal J (2013) Evaluation of DPCR using the RNA polymerase gene (rpoB) primers for rapid differential identification of Mycobacterium tuberculosis complex and Nontuberculous Mycobacteria.
Breast implant infection with mycobacterium fortuitum group: report of case and review.
Sources of Mycobacterium avium complex infection resulting in human diseases.
Evasion and subversion of antigen presentation by Mycobacterium tuberculosis.

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