| Arthrobacter tecti |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinomycetota, Class Actinomycetes, Order Micrococcales, Family Micrococcaceae, Genus Arthrobacter, Arthrobacter tecti
Heyrman et al. 2005.
Heyrman et al. 2005.
Gram-positive short rods and cocci, 0.8-1.0 µm, occurring in pairs or clusters.
Non-motile. Non-spore-forming.
Non-motile. Non-spore-forming.
Colonies on Nutrient Agar after 48 h are below 1 mm in diameter, yellow, round with
entire margins, of low convexity, opaque and smooth. Optimal temperature for growth
is 22-30 ºC. Weak growth at 37 ºC and no growth at 52 ºC. Grows after 1 week at 4 ºC.
Can grow on medium with with 15% NaCl. PH range for growth is 6-9, optimum pH 8.
Aerobic.
entire margins, of low convexity, opaque and smooth. Optimal temperature for growth
is 22-30 ºC. Weak growth at 37 ºC and no growth at 52 ºC. Grows after 1 week at 4 ºC.
Can grow on medium with with 15% NaCl. PH range for growth is 6-9, optimum pH 8.
Aerobic.
Isolated from a biofilm overgrowing a mural painting in the Servilia tomb (Roman necropolis of Carmona, Spain).
Undetermined.
- Heyrman J, Verbeeren J, Schumann P, Swings J, De Vos P. Six novel Arthrobacter species isolated from deteriorated mural
paintings. Int J Syst Evol Microbiol 2005; 55:1457-1464.
Description is based mostly on API Coryne and API ZYM results.
Positive results for acid phosphatase (weak), catalase, esterase C4 (most strains), esterase lipase C8 (most strains),
N-acetyl-beta-glucosaminidase, gelatinase (most strains), leucine arylamidase, N-acetyl-beta-glucosaminidase (negative for the type
strain), alpha-mannosidase (negative for the type strain), phosphoamidase (weak), and trypsin (negative for the type strain).
Negative results for cystine arylamidase, alpha-fucosidase, alpha-galactosidase, beta-glucuronidase, lipase C14, nitrate reduction,
oxidase, pyrrolidonyl arylamidase (most strains), urease, valine arylamidase, and fermentation of maltose, lactose, glycogen, ribose
(most strains), mannitol (most strains), and xylose.
Variable results for alkaline phosphatase, chymotrypsin, beta-galactosidase, alpha- and beta-glucosidase, pyrazinamidase,
fermentation of glucose and sucrose.
Positive results for acid phosphatase (weak), catalase, esterase C4 (most strains), esterase lipase C8 (most strains),
N-acetyl-beta-glucosaminidase, gelatinase (most strains), leucine arylamidase, N-acetyl-beta-glucosaminidase (negative for the type
strain), alpha-mannosidase (negative for the type strain), phosphoamidase (weak), and trypsin (negative for the type strain).
Negative results for cystine arylamidase, alpha-fucosidase, alpha-galactosidase, beta-glucuronidase, lipase C14, nitrate reduction,
oxidase, pyrrolidonyl arylamidase (most strains), urease, valine arylamidase, and fermentation of maltose, lactose, glycogen, ribose
(most strains), mannitol (most strains), and xylose.
Variable results for alkaline phosphatase, chymotrypsin, beta-galactosidase, alpha- and beta-glucosidase, pyrazinamidase,
fermentation of glucose and sucrose.
(c) Costin Stoica
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