Actinomyces naturae
Taxonomy
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Phylum Actinobacteria, Class Actinobacteria, Subclass Actibacteridae, Order Actynomycetales, Suborder Actinomycinae, Family
Actinomycetaceae, Genus Actinomyces,
Actinomyces naturae Rao, Rash, Nobre, da Costa, Rainey, Moe, 2012.
Gram-positive rods, 0.5 / 2.0-2.5 µm. Non-acid-fast. Non-spore-forming. Motile
(flagella were observed by TEM and the motility was demonstrated in semisolid agar).
Colonies are convex, white, opaque, smooth and 1-2 mm in diameter on PCA (Plate
Count Agar) after 4 days at 30 ºC  in anaerobic conditions; in aerobic conditions,
colonies were observed after 4 weeks at 37 ºC.
Grows in anaerobic PYG (Peptone/Yeast Extract/Glucose) broth. Growth temperature:  
20-43 ºC (optimally at 30-37 ºC). Grows in pH 4.5-9.0 (pH 6.5, optimum) and in 0-3.0%
NaCl media.
Isolated from chlorinated solvent contaminated groundwater at Superfund Site, near Baton Rouge, LA (USA).
Undetermined.
  1. Rao JU, Rash BA, Nobre MF, da Costa MS, Rainey FA, Moe WM, 2012. Actinomyces naturae sp. nov., the first Actinomyces sp.
    isolated from a non-human or animal source. Antonie van Leeuwenhoek 101, 155-168.
Description is based on API Rapid ID32A, API Rapid ID32 STREP, API Coryne and API ZYM results.

Positive results for esterase C4 (weak reaction), alpha- and beta-galactosidase, alpha- and beta-glucosidase, leucine arylamidase,
pyrazinamidase, acid production from D-glucose, maltose, mannose, melezitose, sucrose and D-xylose.

Negative results for acid and alkaline phosphatase, arginine dihydrolase, catalase, cystine arylamidase, esculin hydrolysis, esterase
lipase C8, alpha-fucosidase, beta-glucuronidase, hippurate hydrolysis, indole production, alpha-mannosidase,
N-acetyl-beta-glucosaminidase, lipase C14, nitrate reduction, oxidase, pyrrolidonyl arylamidase, urease, trypsin, alpha-chymotrypsin,
valine  arylamidase, Voges-Proskauer test, acid production from D-arabitol, glycogen, lactose, mannitol, melibiose and raffinose.
(c) Costin Stoica
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