| Auritidibacter ignavus |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinomycetota, Class Actinomycetes, Order Micrococcales, Family Micrococcaceae, Genus Auritidibacter, Auritidibacter
ignavus Yassin et al. 2011, type species of the genus.
Species description is based on a single isolate.
ignavus Yassin et al. 2011, type species of the genus.
Species description is based on a single isolate.
Gram-positive, 0.4-0.5 x 2.1-2.5 µm, showing a rod-coccus cycle. Motile.
Non-spore-forming.
Non-spore-forming.
Colonies are cream-coloured, smooth and have an entire margin. Growth occurs on
BHI agar, DST agar, Columbia agar supplemented with 5% sheep’s blood and TSA
agar. CAMP test negative with S. aureus Growth occurs at 10-37 ºC, at pH 7.4-9.0
(optimum at pH 9), and in 0-12% NaCl. Aerobic.
BHI agar, DST agar, Columbia agar supplemented with 5% sheep’s blood and TSA
agar. CAMP test negative with S. aureus Growth occurs at 10-37 ºC, at pH 7.4-9.0
(optimum at pH 9), and in 0-12% NaCl. Aerobic.
Isolated from human ear.
Isolated from an ear swab of a 28-year-old man with fulminant otitis externa.
- Yassin AF, Hupfer H, Siering C, Klenk HP, Schumann P. Auritidibacter ignavus gen. nov., sp. nov., of the family Micrococcaceae
isolated from an ear swab of a man with otitis externa, transfer of the members of the family Yaniellaceae Li et al. 2008 to the family
Micrococcaceae and emended description of the suborder Micrococcineae. Int J Syst Evol Microbiol 2011; 61:223-230.
Positive results for alkaline phosphatase, catalase, DNase, ester lipase C8, naphthol-AS-BI-phosphohydrolase, alpha-glucosidase,
pyrazinamidase, starch hydrolysis (3 days), tyrosine hydrolysis (weakly), and Voges-Proskauer test.
Negative results for adenine hydrolysis, acid phosphatase, arginine dihydrolase, casein hydrolysis, cystine arylamidase, CAMP test,
elastin hydrolysis, esculin hydrolysis, alpha-fucosidase, gelatin hydrolysis, guanine hydrolysis, esterase C4, beta-glucosidase,
alpha- and beta--galactosidase, beta-glucuronidase, N-acetyl-beta-glucosaminidase, hippurate hydrolysis, hypoxanthine hydrolysis,
keratin hydrolysis, lipase C14, leucine arylamidase, alpha-mannosidase, pyrrolidonyl arylamidase, urease, nitrate reduction,
oxidase, alpha-chymotrypsin, trypsin, testosterone hydrolysis, valine arylamidase, and xanthine hydrolysis.
No acid production from L-arabinose, D-glucose, maltose, sucrose, and trehalose.
No assimilation of acetate, adipate, adonitol, L-arabinose, isoamyl alcohol, 2,3-butanediol, cellobiose, citrate, meso-erythritol,
D-galactose, D-glucose, D-gluconate, m-hydroxybenzoate, p-hydroxybenzoate, myo-inositol, L-lactate, lactose, maltose, D-mannitol,
melezitose, 1,2-propanediol, raffinose, L-rhamnose, D-sorbitol, sucrose, trehalose and D-xylose.
No utilization of acetamide, L-alanine, gelatin, L-proline and L-serine.
pyrazinamidase, starch hydrolysis (3 days), tyrosine hydrolysis (weakly), and Voges-Proskauer test.
Negative results for adenine hydrolysis, acid phosphatase, arginine dihydrolase, casein hydrolysis, cystine arylamidase, CAMP test,
elastin hydrolysis, esculin hydrolysis, alpha-fucosidase, gelatin hydrolysis, guanine hydrolysis, esterase C4, beta-glucosidase,
alpha- and beta--galactosidase, beta-glucuronidase, N-acetyl-beta-glucosaminidase, hippurate hydrolysis, hypoxanthine hydrolysis,
keratin hydrolysis, lipase C14, leucine arylamidase, alpha-mannosidase, pyrrolidonyl arylamidase, urease, nitrate reduction,
oxidase, alpha-chymotrypsin, trypsin, testosterone hydrolysis, valine arylamidase, and xanthine hydrolysis.
No acid production from L-arabinose, D-glucose, maltose, sucrose, and trehalose.
No assimilation of acetate, adipate, adonitol, L-arabinose, isoamyl alcohol, 2,3-butanediol, cellobiose, citrate, meso-erythritol,
D-galactose, D-glucose, D-gluconate, m-hydroxybenzoate, p-hydroxybenzoate, myo-inositol, L-lactate, lactose, maltose, D-mannitol,
melezitose, 1,2-propanediol, raffinose, L-rhamnose, D-sorbitol, sucrose, trehalose and D-xylose.
No utilization of acetamide, L-alanine, gelatin, L-proline and L-serine.
(c) Costin Stoica
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