Phylum Firmicutes, Class Bacilli, Order Lactobacillales, Family Aerococcaceae, Genus Eremococcus, Eremococcus coleocola
Collins et al. 1999 - single species of the genus.
Gram-positive, ovoid cells occurring singly, in pairs or in short chains.
Colonies are pin-point, shiny, entire, circular, convex and non-corroding on blood agar
after 24 h. Alpha-haemolytic on horse- and sheep-blood agar. Facultatively anaerobic.
Growth does not occur at 10, but can grow at 42 ºC. Weak growth in broth containing
6.5 % NaCl and no growth occurs in 10% NaCl or in aesculin agar (Difco).
Isolated from the reproductive tract of horses (vaginal and clitoral fossa).
- Matthew D. Collins, Mar Rodriguez Jovita, Paul A. Lawson, Enevold Falsen, Geoffrey Foster. Characterization of a novel Gram-
positive, catalase-negative coccus from horses: description of Eremococcus coleocola gen. nov. sp. nov. Int J Syst Evol Microbiol,
October 1999 49: 1381-1385.
Description is based on API Rapid ID32S and API ZYM tests.
Positive results for arginine dihydrolase, hippurate hydrolysis, pyroglutamic acid
arylamidase, esterase C-4 (weak), ester lipase C-8 (weak), acid production from:
glucose (without gas) & N-acetylglucosamine (weak).
Negative results for acid phosphatase, alkaline phosphatase, aesculin hydrolysis, catalase, alpha-fucosidase, gelatin hydrolysis,
alpha- and beta-galactosidase, beta-galacturonidase, beta-glucosidase, beta-glucuronidase, glycine-tryptophanarylamidase, lipase
C 14, alpha- and beta-mannosidase, nitrate reduction, chymotrypsin, trypsin, oxidase, pyrazinamidase, starch hydrolysis,
alanine-phenylalanine-prolinearylamidase, leucine arylamidase, valine arylamidase, Voges-Proskauer reaction, acid production
from: L-arabinose, D-arabitol, cyclodextrin, glycogen, lactose, mannitol, maltose, methyl beta-D-glucopyranoside, melibiose,
melezitose, pullulan, D-raffinose, D-ribose, sorbitol, sucrose, tagatose, trehalose & D-xylose.
Variable results for urease activity.
(c) Costin Stoica