Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacterales, Family Enterobacteriaceae, Genus Franconibacter,
Franconibacter daqui Gao et al. 2017.
Species description is based on a single isolate.
Gram-negative, coccoid rods, 0.9-1.1 x 2.0-3.3 µm. Non-spore-forming. Motile.
Colonies are smooth and yellow-coloured when grown on GBP medium and sheep
blood agar. Non-haemolytic. Optimal growth is observed at 20-45 ºC (range 10-50 ºC),
pH 5.0-10.0 (range pH 4.0-11.0) and with 1.5 % NaCl (range 0-5 %, w/v). Facultatively
anaerobic.
Isolated from a traditional Chinese liquor fermentation starter (Daqu) sample collected from Maotai, Renhuai City, China.
Susceptible to ampicillin, cephalothin, chloramphenicol, erythromycin, gentamicin, kanamycin, neomycin, novobiocin, penicillin,
rifampicin, and streptomycin.
Undetermined.
- Gao Z, Su C, Yang X, Sun D, Zeng C, Chen M, Hu W, Zhang C. Franconibacter daqui sp. nov., a facultatively alkaliphilic species
isolated from a Daqu sample. Int J Syst Evol Microbiol 2017; 67:4962-4966.
Description is based on API 50CH/B, API 20E and API ZYM (bioMerieux) results.
Positive results for catalase, chymotrypsin, alpha-fucosidase, beta-glucuronidase alpha-mannosidase, nitrate reduction, acid
production from N-acetylglucosamine, D-arabitol, L-arabinose, arbutin, cellobiose, aesculin, D-fructose, D-galactose, gentiobiose,
gluconate, glucose, glycerol, glycogen, lactose, D-lyxose, maltose, mannitol, D-mannose, melibiose, 2- and 5-ketogluconate,
raffinose, rhamnose, ribose, salicin, sucrose, trehalose and D-xylose.
Negative results for amylase, N-acetyl-beta-glucosaminidase, acid and alkaline phosphatase, cystine arylamidase, esterase (C4),
esterase lipase (C8), alpha- and beta-galactosidase, alpha- and beta-glucosidase, leucine arylamidase, lipase (C14),
naphthol-AS-BI-phosphohydrolase, trypsin, valine arylamidase, acid production from D-arabinose and dulcitol.
(c) Costin Stoica