| Antibiogram |
| Franconibacter helveticus |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacterales, Family Enterobacteriaceae, Genus Franconibacter,
Franconibacter helveticus (Stephan et al. 2007) Stephan et al. 2014, type species of the genus.
Synonyms: Cronobacter helveticus (Stephan et al. 2007) Brady et al. 2013,
Enterobacter helveticus Stephan et al. 2007.
Franconibacter helveticus (Stephan et al. 2007) Stephan et al. 2014, type species of the genus.
Synonyms: Cronobacter helveticus (Stephan et al. 2007) Brady et al. 2013,
Enterobacter helveticus Stephan et al. 2007.
Gram-negative, coccoid rods, 1.0 x 1.5-2.5 µm, occuring singly or in pairs.
Non-spore-forming. Motile.
Non-spore-forming. Motile.
Colonies are yellow-pigmented and convex. after 24 hours incubation on TSA, at 37
ºC. Grows well at 44 ºC but poorly at 10 ºC. Facultatively anaerobic.
ºC. Grows well at 44 ºC but poorly at 10 ºC. Facultatively anaerobic.
Isolated from fruit powder.
Undetermined.
- Stephan R, Grim CJ, Gopinath GR, Mammel MK, Sathyamoorthy V, Trach LH, Chase HR, Fanning S, Tall BD. Re-examination of the
taxonomic status of Enterobacter helveticus, Enterobacter pulveris and Enterobacter turicensis as members of the genus
Cronobacter and their reclassification in the genera Franconibacter gen. nov. and Siccibacter gen. nov. as Franconibacter helveticus
comb. nov., Franconibacter pulveris comb. nov. and Siccibacter turicensis comb. nov., respectively. Int J Syst Evol Microbiol 2014; 64:
3402-3410. - Stephan R, Van Trappen S, Cleenwerck I, Vancanneyt M, De Vos P, Lehner A. Enterobacter turicensis sp. nov. and Enterobacter
helveticus sp. nov., isolated from fruit powder. Int J Syst Evol Microbiol 2007; 57:820-826. - 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.
Positive results for catalase, esculin hydrolysis, alpha- and beta-glucosidase, alpha- and beta-galactosidase, 2-ketogluconate,
alpha-maltosidase, methyl red test, malonate decarboxylase, acid production from D- and L-arabinose, dulcitol, D-glucose,
galacturonate, D-mannitol, D-maltose, and D-trehalose.
Can utilize as sole carbon source alpha-D-glucose, beta-D-fructose, D-galactose, D-trehalose, D-mannose, alpha-D-melibiose,
maltotriose, maltose, alpha-lactose, 1-0-methyl beta-galactopyranoside, 1-O-methyl alpha-galactopyranoside, D-cellobiose,
beta-gentiobiose, 1-O-methyl beta-D-glucopyranoside, esculin, D-ribose, L-arabinose, D-xylose, alpha-L-rhamnose, dulcitol, glycerol,
D-mannitol, D-turanose, D-saccharate, mucate, L-malate, cis-aconitate, trans-aconitate, D-glucuronate, D-galacturonate, 2- and
5-ketogluconate, N-acetyl-D-glucosamine, D-gluconate, protocatechuate, p-hydroxybenzoate, quinate, putrescine,
DL-alpha-amino-n-butyrate, DL-lactate, D-glucosamine, L-aspartate, L-glutamate, L-proline, L-alanine and L-serine.
Negative results for arginine dihydrolase, beta-glucuronidase, indole production, H2S production, lysine decarboxylase, ornithine
decarboxylase, oxidase, urease, Voges-Proskauer test, acid production from adonitol, D- and L-arabitol, D-cellobiose, glycogen,
lyxose, inositol, 5-ketogluconate, phenol red, palatinose, L-rhamnose, sucrose, and D-sorbitol.
No utilization of L-sorbose, sucrose, D-raffinose, lactulose, alpha-L-fucose, D-arabitol, L-arabitol, xylitol, D-tagatose, myoinositol,
maltitol, D-sorbitol, adonitol, hydroxyquinoline-beta-glucuronide, i-erythritol, 1-O-methyl alpha-D-glucopyranoside, 3-O-methyl
D-glucopyranose, L-tartrate, D-tartrate, myotartrate, tricarballylate, L-tryptophan, phenylacetate, gentisate, m-hydroxybenzoate,
benzoate, 3-phenylpropionate, trigonelline, betain, histamine, caprate, caprylate, L-histidine, fumarate, glutarate, DL-glycerate,
DL-alpha-amino-valerate, ethanolamine, tryptamine, itaconate, DL-beta-hydroxybutyrate, malonate, propionate, L-tyrosine or
2-oxoglutarate.
alpha-maltosidase, methyl red test, malonate decarboxylase, acid production from D- and L-arabinose, dulcitol, D-glucose,
galacturonate, D-mannitol, D-maltose, and D-trehalose.
Can utilize as sole carbon source alpha-D-glucose, beta-D-fructose, D-galactose, D-trehalose, D-mannose, alpha-D-melibiose,
maltotriose, maltose, alpha-lactose, 1-0-methyl beta-galactopyranoside, 1-O-methyl alpha-galactopyranoside, D-cellobiose,
beta-gentiobiose, 1-O-methyl beta-D-glucopyranoside, esculin, D-ribose, L-arabinose, D-xylose, alpha-L-rhamnose, dulcitol, glycerol,
D-mannitol, D-turanose, D-saccharate, mucate, L-malate, cis-aconitate, trans-aconitate, D-glucuronate, D-galacturonate, 2- and
5-ketogluconate, N-acetyl-D-glucosamine, D-gluconate, protocatechuate, p-hydroxybenzoate, quinate, putrescine,
DL-alpha-amino-n-butyrate, DL-lactate, D-glucosamine, L-aspartate, L-glutamate, L-proline, L-alanine and L-serine.
Negative results for arginine dihydrolase, beta-glucuronidase, indole production, H2S production, lysine decarboxylase, ornithine
decarboxylase, oxidase, urease, Voges-Proskauer test, acid production from adonitol, D- and L-arabitol, D-cellobiose, glycogen,
lyxose, inositol, 5-ketogluconate, phenol red, palatinose, L-rhamnose, sucrose, and D-sorbitol.
No utilization of L-sorbose, sucrose, D-raffinose, lactulose, alpha-L-fucose, D-arabitol, L-arabitol, xylitol, D-tagatose, myoinositol,
maltitol, D-sorbitol, adonitol, hydroxyquinoline-beta-glucuronide, i-erythritol, 1-O-methyl alpha-D-glucopyranoside, 3-O-methyl
D-glucopyranose, L-tartrate, D-tartrate, myotartrate, tricarballylate, L-tryptophan, phenylacetate, gentisate, m-hydroxybenzoate,
benzoate, 3-phenylpropionate, trigonelline, betain, histamine, caprate, caprylate, L-histidine, fumarate, glutarate, DL-glycerate,
DL-alpha-amino-valerate, ethanolamine, tryptamine, itaconate, DL-beta-hydroxybutyrate, malonate, propionate, L-tyrosine or
2-oxoglutarate.
(c) Costin Stoica
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