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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 ?
Two of them, Moran and Cross, remained at Cabrini College and worked on independent research projects on mycobacteriophages during the summer.
Over the past century, scientists have been working together in efforts to further knowledge of the Mycobacteriophage population throughout our planet.
* Phage-based assays use mycobacteriophages to infect any viable M.
Evaluation of luciferase reporter mycobacteriophage technology for detection, identification, and antibiotic susceptibility testing of Mycobacterium tuberculosis complex in Mexico.
New diagnostic test using mycobacteriophages to identify M.
In addition to educational goals, these courses have a clear research objective: the structural and genomic characterization of novel mycobacteriophages from local soil samples.