| Actinomyces graevenitzii |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinomycetota, Class Actinomycetes, Order Actynomycetales, Suborder Actinomycinae, Family Actinomycetaceae, Genus
Actinomyces, Actinomyces graevenitzii Pascual Ramos, Falsen , Alvarez, Akervall, Sjoden, and Collins 1997.
Actinomyces, Actinomyces graevenitzii Pascual Ramos, Falsen , Alvarez, Akervall, Sjoden, and Collins 1997.
Gram-positive straight or slightly curved rods with some branching and swollen ends.
Non-motile. Non-spore-forming. Non-acid-fast.
Non-motile. Non-spore-forming. Non-acid-fast.
Colonies are opaque, nonpigmented, 0.2 mm in diameter on Columbia agar (Difco)
supplemented with 5% horse blood after 24 h at 37 ºC in air plus 5% CO2. Colonies
adhere to agar surfaces. Facultative anaerobic.
supplemented with 5% horse blood after 24 h at 37 ºC in air plus 5% CO2. Colonies
adhere to agar surfaces. Facultative anaerobic.
Isolated from human clinical specimens (mainly respiratory tract secretions). Habitat is not known.
Isolated from clinical specimens (bronchus brush, bronchial secretion, sputum and from jaw of a patient with osteitis).
- Pascual Ramos C., Falsen E., Alvarez N., Akervall E., Sjoden B., and Collins M.D., 1997. Actinomyces graevenitzii sp. nov.,
isolated from human clinical specimens. Int. J. Syst. Bacteriol. Vol. 47, No. 3, 885-888.
Description is based mostly on API CORYNE, API ZYM, API 50CH (with API 50 CHE
medium) and Rapid ID 32A results.
Positive results for acid phosphatase, beta-galactosidase, N-acetyl-beta-glucosaminidase, leucine arylamidase, phosphoamidase,
acid production from: fructose, galactose, glycerol, N-acetylglucosamine, inositol, 5 ketogluconate, lactose, maltose, ribose, sucrose
(saccharose) and tagatose.
Negative results for catalase, chymotrypsin, esculin hydrolysis, alpha-fucosidase, alpha-galactosidase, alpha- and beta-
glucosidase,beta-glucuronidase, hippurate hydrolysis, lipase C14, alpha-mannosidase, nitrate reduction, pyrrolidonyl arylamidase,
urease, valine arylamidase, acid production from: D-arabinose, amygdalin, D- and L-arabitol, cellobiose, dulcitol, erythritol, D- and
L-fucose, glycogen, gentibiose, methyl-beta-D-glucopyranoside, inulin, mannitol, melezitose, melibiose, rhamnose, salicin, sorbitol,
L-sorbose, starch, trehalose, xylitol, L- and D-xylose.
Variable results for acid production from adonitol and mannose.
medium) and Rapid ID 32A results.
Positive results for acid phosphatase, beta-galactosidase, N-acetyl-beta-glucosaminidase, leucine arylamidase, phosphoamidase,
acid production from: fructose, galactose, glycerol, N-acetylglucosamine, inositol, 5 ketogluconate, lactose, maltose, ribose, sucrose
(saccharose) and tagatose.
Negative results for catalase, chymotrypsin, esculin hydrolysis, alpha-fucosidase, alpha-galactosidase, alpha- and beta-
glucosidase,beta-glucuronidase, hippurate hydrolysis, lipase C14, alpha-mannosidase, nitrate reduction, pyrrolidonyl arylamidase,
urease, valine arylamidase, acid production from: D-arabinose, amygdalin, D- and L-arabitol, cellobiose, dulcitol, erythritol, D- and
L-fucose, glycogen, gentibiose, methyl-beta-D-glucopyranoside, inulin, mannitol, melezitose, melibiose, rhamnose, salicin, sorbitol,
L-sorbose, starch, trehalose, xylitol, L- and D-xylose.
Variable results for acid production from adonitol and mannose.
(c) Costin Stoica
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