Phylum “Actinobacteria”, Class Actinobacteria, Order Bifidobacteriales, Family Bifidobacteriaceae, Genus Bifidobacterium,
Bifidobacterium apri Pechar, Killer, Salmonova, Geigerova, Svejstil, Svec, Sedlacek, Rada and Benada, 2017.
Gram-positive slightly irregular rods of variable sizes, 0,3-0.8/1.5-6 µm long.
Colonies are creamy white, glossy, round, disc-shaped in profile, soft, large, 1.4-2.8
mm in diameter after 72 h anaerobic incubation at 37 ºC on TPY agar. Optimum
growth temperature 37 ºC; range 10-49 ºC. Grows at pH 3.7-7.5 (optimum pH 6.5).
Isolated from the large intestine content of a wild boar, Czech Republic.
- Pechar R, Killer J, Salmonova H, Geigerova M, Svejstil R, Svec P, Sedlacek I, Rada V and Benada O, 2017. Bifidobacterium apri sp.
nov., a thermophilic actinobacterium isolated from the digestive tract of wild pigs. Int J Syst Evol Microbiol 67, 2349-2356.
Description is based mostly on API 50CHL and API Rapid ID32 A (bioMerieux) results.
Positive results for acid phosphatase, alanine arylamidase, arginine arylamidase, esterase C4, glycine arylamidase, alpha- and
beta-galactosidase, alpha- and beta-glucosidase, leucine arylamidase, naphtol-AS-BI-phosphohydrolase (weak), phosphoamidase,
proline arylamidase, serine arylamidase, tyrosine arylamidase, valine arylamidase (weak), acid production from arbutin, D-fructose,
D-galactose, D-glucose, glycogen, D-lactose (weak), maltose, melibiose, raffinose, salicin, starch, sucrose, and D-turanose.
Negative results for alkaline phosphatase, arginine dihydrolase, alpha-arabinosidase, catalase, esterase lipase C8,
alpha-fucosidase, cystine arylamidase, beta-glucuronidase, gelatin hydrolysis, histidine arylamidase, indole production, lipase,
alpha-mannosidase, nitrate reduction, N-acetyl-beta-glucosaminidase, oxidase, phenylalanine arylamidase, trypsin, chymotrypsin,
urease, acid production from D-adonitol, D- and L-arabinose, D- and L-arabitol, cellobiose, dulcitol, erythritol, aesculin, D- and
L-fucose, gentibiose, glycerol, gluconate, 2- and 5-ketogluconate, inositol, inulin, D-lyxose, D-mannitol, D-mannose, methyl
beta-D-xylopyranoside, N-acetylglucosamine, rhamnose, D-ribose, D-sorbitol, sorbose, D-tagatose, xylitol, D- and L-xylose.
Variable results for acid production from amygdalin, melezitose, trehalose, methyl alpha-D-glucopyranoside, and methyl
(c) Costin Stoica