(c) Costin Stoica
Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Staphylococcaceae, Genus Auricoccus, Auricoccus indicus Prakash et al.
2017, type species of the genus.
Species description is based on a single isolated strain.
Gram-positive cocci. Non-spore-forming. Non-motile.
Colonies on Zobell Marine Agar after 72 h of incubation at 37 ºC are smooth, round,
convex, cream-coloured 0.5 mm in diameter. Grows aerobically on TSA, LA, NA and
R2A agar. No growth on MacConkey agar. Strictly aerobic. Grows at temperature
20-40 °C (optimum at 35 ºC), at 1-20% NaCl concentrations (optimum at 2% NaCl)
and pH 5-10 (optimum at pH 7.0).
Isolated from human skin of the ear lobe of a healthy subject. Sensitive to amikacin, co-trimoxazole, netilmycin, norfloxacin,
ceftriaxone, ciprofloxacin, cefotaxime, gentamicin, furazolidone and amoxicillin. Resistant to colistin and augmentin.
- Prakash, O., Muduli, S., Kumar, R., Kumari, C., Nimonkar, Y., Shouche, Y. S. And Sharma, R. 2017. Description of Auricoccus
indicus gen. nov., sp. nov., isolated from skin of human ear. Int. J. Syst. Evol. Microbiol., 67, 1212-1218.
Positive results for acid and alkaline phosphatase, catalase, esterase (C4), esterase lipase (C8), nitrate reduction, naphthol-AS-BI-
phosphohydrolase and oxidase, weak acid production from sucrose and dextrose.
Negative results for amylase, chitinase, Simmons citrate, DN-ase, esculin hydrolysis, alpha-fucosidase, gelatin hydrolysis, indole
production, gelatinase, 4-nitrophenyl-beta-D-galactopyranoside, cystine arylamidase, alpha- and beta-galactosidase, beta-
glucuronidase, alpha- and beta-glucosidase, N-acetyl-beta-glucosaminidase, alpha-mannosidase, methyl red test, protease, trypsin,
alpha-chymotrypsin, urease and Voges–Proskauer test.
No utilization of L-arabinose, D-mannose, D-mannitol, N-acetylglucosamine, D-maltose, potassium gluconate, capric acid, adipic acid,
malic acid, trisodium citrate and phenylacetic acid.