Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Aerococcaceae, Genus Aerococcus, Aerococcus suis Vela et al. 2007.
Gram-positive cocci, non-motile, grouped in pairs, tetrads or small groups.
Alpha-hemolytic, circular, small (<1 mm in diameter) colonies on blood agar.
Non-pigmented. Grows at pH 9.6 and in broth containing 6.5 % NaCl. Grow at 37 ºC,
and 30 ºC. Facultatively anaerobic. Grows in MRS broth/agar.
Isolated from clinical specimens from swine.
Isolated from the brain of a pig with meningitis.
- A. I. Vela, N. Garcia, M. V. Latre, A. Casamayor, C. Sanchez-Porro, V. Briones, A. Ventosa, L. Dominguez, J. F. Fernandez-
Garayzabal: Aerococcus suis sp. nov., isolated from clinical specimens from swine. Int J Syst Evol Microbiol, June 2007 57: 1291-
- Masanori Tohno, Maki Kitahara, Shuichi Matsuyama, Koji Kimura, Moriya Ohkuma, Kiyoshi Tajima: Aerococcus vaginalis sp.
nov., isolated from the vaginal mucosa of a beef cow, and emended descriptions of Aerococcus suis, Aerococcus viridans,
Aerococcus urinaeequi, Aerococcus urinaehominis, Aerococcus urinae, Aerococcus christensenii and Aerococcus sanguinicola.
Int J Syst Evol Microbiol, April 2014 64: 1229-1236.
- Matthew D. Collins and Enevold Falsen, 2009. Genus I. Aerococcus Williams, Hirch and Cowan 1953, 475AL. In: (Eds.) P.D. Vos,
G. Garrity, D. Jones, N.R. Krieg, W. Ludwig, F.A. Rainey, K.-H. Schleifer, W.B. Whitman. Bergey’s Manual of Systematic
Bacteriology, Volume 3: The Firmicutes, Springer, 655-711.
Description is based on API 50 CH, API ZYM, API ID 32 Strep and API Strep results.
Hydrolysis of urea was variable in the original paper (1) and negative in the emended
Positive results for arginine dihydrolase, beta-galactosidase, esterase C4, ester lipase C8, acid phosphatase,
naphthol-AS-BI-phosphohydrolase (weak reaction), pyrrolidonyl arylamidase, acid production (after 7 days incubation at 30 ºC) from:
D-galactose, D-glucose, D-fructose & maltose. In the original paper only 5-ketogluconate (48 h), ribose and D-tagatose (7 days) were
Negative results for alkaline phosphatase (positive in the original paper), aesculin hydrolysis, acetoin production, catalase (positive
when tested from blood agar), hippurate hydrolysis, nitrates reduction, alpha- and beta-glucosidase, beta-galactosidase,
beta-glucuronidase, alanyl-phenylalanyl-proline arylamidase, pyroglutamic acid arylamidase, N-acetyl-beta-glucosaminidase, lipase
C14, leucine arylamidase, valine arylamidase, cystine arylamidase, trypsin, chymotrypsin, alpha-glucosidase, alpha-mannosidase,
alpha-fucosidase, glycyl tryptophan arylamidase, acid production from: aesculin, arabinose, arabitol, adonitol, amygdalin, arbutin,
cyclodextrin, cellobiose, dulcitol, erythritol, fucose, gentiobiose, glycerol, glycogen, N-acetylglucosamine, methyl
beta-D-glucopyranoside, 2-ketogluconate, inositol, inulin, lactose, lyxose, mannitol, mannose, melibiose, melezitose, methyl
alpha-D-mannopyranoside, pullulan, rhamnose, raffinose, salicin, sorbitol, sorbose, starch, sucrose, trehalose, turanose, methyl
beta-D-xylopyranoside, xylitol & xylose.
(c) Costin Stoica