| Arthrobacter cryoconiti |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinomycetota, Class Actinomycetes, Order Micrococcales, Family Micrococcaceae, Genus Arthrobacter, Arthrobacter
cryoconiti Margesin et al. 2012.
Species description is based on a single isolate.
cryoconiti Margesin et al. 2012.
Species description is based on a single isolate.
Gram-positive irregular rods showing a rod-coccus cycle, 0.5-0.7 x 0.8-2.0 µm, and
occurring in pairs as typical V-forms. Non-motile.
occurring in pairs as typical V-forms. Non-motile.
Colonies on R2A agar are white after 3 days and sulfur-yellow after 7 days, round,
convex, smooth, glossy and with an entire margin; colony diameter is 0.2–0.6 mm (1–
1.5 mm) after 4 days (7 days) at 20 ºC on R2A agar. Growth occurs at 1-25 ºC, with
optimum at 20-25 ºC; no growth at 30 ºC. Grows in the presence of 0-3% (w/v) NaCl.
The pH range for growth is 6-8; weak Growth at pH 9. Aerobic; no growth under
anaerobic conditions.
convex, smooth, glossy and with an entire margin; colony diameter is 0.2–0.6 mm (1–
1.5 mm) after 4 days (7 days) at 20 ºC on R2A agar. Growth occurs at 1-25 ºC, with
optimum at 20-25 ºC; no growth at 30 ºC. Grows in the presence of 0-3% (w/v) NaCl.
The pH range for growth is 6-8; weak Growth at pH 9. Aerobic; no growth under
anaerobic conditions.
Isolated from cryoconite from the Banker glacier in the Otztaler Alps in Austria.
Undetermined.
- Margesin R, Schumann P, Zhang DC, Redzic M, Zhou YG, Liu HC, Schinner F. Arthrobacter cryoconiti sp. nov., a psychrophilic
bacterium isolated from alpine glacier cryoconite. Int J Syst Evol Microbiol 2012; 62:397-402.
Positive results for acid phosphatase, catalase, cystine arylamidase, esculin hydrolysis, esterase (C4), esterase lipase (C8), lipase
(C14), alpha- and beta-glucosidase, alpha- and beta-galactosidase, beta-glucuronidase, N-acetyl-beta-glucosaminidase,
alpha-mannosidase, nitrate reduction, leucine arylamidase, trypsin, and valine arylamidase.
Assimilates D-glucose, D-mannose, D-mannitol, N-acetylglucosamine, maltose, lactose, potassium gluconate, malic acid, trisodium
citrate and phenylacetic acid.
Negative results for alkaline phosphatase, arginine dihydrolase, alpha-fucosidase, gelatin hydrolysis, indole production, H2S
production, citrate utilization, lysine dihydrolase, ornithine dihydrolase, oxidase, starch hydrolysis, urea hydrolysis, acid production,
from amygdalin, L-arabinose, D-glucose, inositol, D-mannitol, L-rhamnose, melibiose, D-sorbitol, and sucrose.
No assimilation of Tween 40 or 80, L-arabinose, capric acid or adipic acid.
(C14), alpha- and beta-glucosidase, alpha- and beta-galactosidase, beta-glucuronidase, N-acetyl-beta-glucosaminidase,
alpha-mannosidase, nitrate reduction, leucine arylamidase, trypsin, and valine arylamidase.
Assimilates D-glucose, D-mannose, D-mannitol, N-acetylglucosamine, maltose, lactose, potassium gluconate, malic acid, trisodium
citrate and phenylacetic acid.
Negative results for alkaline phosphatase, arginine dihydrolase, alpha-fucosidase, gelatin hydrolysis, indole production, H2S
production, citrate utilization, lysine dihydrolase, ornithine dihydrolase, oxidase, starch hydrolysis, urea hydrolysis, acid production,
from amygdalin, L-arabinose, D-glucose, inositol, D-mannitol, L-rhamnose, melibiose, D-sorbitol, and sucrose.
No assimilation of Tween 40 or 80, L-arabinose, capric acid or adipic acid.
(c) Costin Stoica
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