''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 °C, but not at 45 °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