Mycobacterium gilvum
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''Mycobacterium gilvum'' is a species of the phylum Actinomycetota ( Gram-positive bacteria with high guanine and cytosine content, one of the dominant phyla of all bacteria), belonging to the genus ''
Mycobacterium ''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 ('' M. tuberculosis'') and ...
''. Etymology: gilvum, Latin for pale yellow.


Description

Pleomorphic gram-positive, nonmotile and acid-fast rods. Colony characteristics *Pale yellow,
Scotochromogenic Scotochromogenic bacteria develop pigment in the dark. Runyon Group II nontuberculous mycobacteria such as Mycobacterium gordonae ''Mycobacterium gordonae'' is a species of '' Mycobacterium'' named for Ruth E. Gordon. It is a species of the ...
, and smooth pleomorphic colonies. Physiology *Rapid growth on Löwenstein-Jensen medium at 25
°C The degree Celsius is the unit of temperature on the Celsius scale (originally known as the centigrade scale outside Sweden), one of two temperature scales used in the International System of Units (SI), the other being the Kelvin scale. The ...
and 37 Â°C, but not at 45 Â°C, within 7 days. *Resistant to isoniazid,
rifampicin Rifampicin, also known as rifampin, is an ansamycin antibiotic used to treat several types of bacterial infections, including tuberculosis (TB), mycobacterium avium complex, ''Mycobacterium avium'' complex, leprosy, and Legionnaires’ disease. ...
, and sodium aminosalicylate. Differential characteristics *5 species-specific antigens, demonstrable in immunodiffusion tests.


Pathogenesis

*Not assumed to be
pathogenic In biology, a pathogen ( el, πάθος, "suffering", "passion" and , "producer of") in the oldest and broadest sense, is any organism or agent that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ ...
. * Biosafety level 1


Type strain

First isolated from
sputum Sputum is mucus that is coughed up from the lower airways (the trachea and bronchi). In medicine, sputum samples are usually used for a naked eye examination, microbiological investigation of respiratory infections and cytological investigations ...
and pleura fluid ( London). Strain ATCC 43909 = CCUG 37676 = CIP 106743 = DSM 44503 = JCM 6395 = NCTC 10742.


References

*Stanford,J., G. Gunthorpe. 1971. A study of some fast-growing scotochromogenic mycobacteria including species descriptions of Mycobacterium gilvum (new species) and Mycobacterium duvalii (new species). British Journal of Experimental Pathology, 52, 627–637.]


External links


Type strain of ''Mycobacterium gilvum'' at Bac''Dive'' - the Bacterial Diversity Metadatabase
Acid-fast bacilli gilvum Bacteria described in 1971 {{Mycobacterium-stub