''Mycobacterium gordonae'' is a species of ''

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 ...

'' named for Ruth E. Gordon. It is a species of the phylum

Actinomycetota The ''Actinomycetota'' (or ''Actinobacteria'') are a phylum of all gram-positive bacteria. They can be terrestrial or aquatic. They are of great economic importance to humans because agriculture and forests depend on their contributions to soi ...

(

Gram-positive In bacteriology, gram-positive bacteria are bacteria that give a positive result in the Gram stain test, which is traditionally used to quickly classify bacteria into two broad categories according to their type of cell wall. Gram-positive bacte ...

bacteria Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among ...

with high guanine and cytosine content, one of the dominant phyla of all bacteria), belonging to the genus ''

''.

Description

, nonmotile and moderate to long

acid-fast Acid-fastness is a physical property of certain bacterial and eukaryotic cells, as well as some sub-cellular structures, specifically their resistance to decolorization by acids during laboratory staining procedures. Once stained as part of a sam ...

rods. *Commonly found in tap water and soil. Casual resident in human

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

gastric lavage Gastric lavage, also commonly called stomach pumping or gastric irrigation, is the process of cleaning out the contents of the stomach. Since its first recorded use in early 19th century, it has become one of the most routine means of eliminating ...

specimens. Colony characteristics *Smooth, with yellow or orange

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 ...

colonies. Even though they are

pigment is intensified by growing in continuous light. Physiology *Growth on Löwenstein-Jensen medium and Middlebrook 7H10 agar within 7 or more days at 37 °C (optimal 25 °C). *Does not grow in the presence of ethambutol (1 mg/L), isoniazid (10 mg/L) and sodium chloride (5%). *Some strains can grow using carbon monoxide as a carbon and energy source. Differential characteristics *A commercial hybridisation assay ( AccuProbe) to identify M. gordonae exists. *Intraspecies variability in

16S rDNA 16 S ribosomal RNA (or 16 S rRNA) is the RNA component of the 30S subunit of a prokaryotic ribosome (SSU rRNA). It binds to the Shine-Dalgarno sequence and provides most of the SSU structure. The genes coding for it are referred to as 16S rR ...

sequences

Pathogenesis

*Rarely if ever implicated in disease processes even if patients are

immunocompromised Immunodeficiency, also known as immunocompromisation, is a state in which the immune system's ability to fight infectious diseases and cancer is compromised or entirely absent. Most cases are acquired ("secondary") due to extrinsic factors that a ...

. Widely distributed in environment and usually a contaminant in laboratory specimens. * Biosafety level 2

Type strain

Strain ATCC 14470 = CCUG 21801 = CCUG 21811 = CIP 104529 = DSM 44160 = JCM 6382 = NCTC 10267.

References

External links

Type strain of ''Mycobacterium gordonae'' at Bac''Dive'' - the Bacterial Diversity Metadatabase
Acid-fast bacilli gordonae Bacteria described in 1962 {{Mycobacterium-stub

Description

Pathogenesis

Type strain

References

Further reading

External links