| Aeromonas taiwanensis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Aeromonadales, Family Aeromonadaceae, Genus Aeromonas,
Aeromonas taiwanensis Alperi et al. 2010.
Aeromonas taiwanensis Alperi et al. 2010.
Gram-negative, rod-shaped cells, nonspore-forming, nonencapsulated, 0.8-1 x
1.8-2.5 µm. Motile.
1.8-2.5 µm. Motile.
Colonies on TSA are 2–5 mm in diameter, opaque, circular and beige in colour after
48 hours at 30 ºC. No brown diffusible pigment is produced on TSA. Growth is
observed at 36 ºC but not at 4 or 40 ºC after 24 hours on sheep-blood agar. Optimal
growth occurs after 24 hours at 30 ºC. Grow on MacConkey and in the absence of
NaCl but not in 6% NaCl medium. Optimal growth occurs at pH 9 after 24 hours on
TSA, but not at pH 4.5.
48 hours at 30 ºC. No brown diffusible pigment is produced on TSA. Growth is
observed at 36 ºC but not at 4 or 40 ºC after 24 hours on sheep-blood agar. Optimal
growth occurs after 24 hours at 30 ºC. Grow on MacConkey and in the absence of
NaCl but not in 6% NaCl medium. Optimal growth occurs at pH 9 after 24 hours on
TSA, but not at pH 4.5.
Isolated from a wound culture from a patient in Taiwan. Resistant to vibriostatic agent O/129, amoxicillin, amoxicillin + clavulanic
acid, ticarcillin, ticarcillin + clavulanic acid, cephalothin and erythromycin.
acid, ticarcillin, ticarcillin + clavulanic acid, cephalothin and erythromycin.
Undetermined. Wound contaminant.
- Anabel Alperi, Antonio J. Martínez-Murcia, Wen-Chien Ko, Arturo Monera, Maria J. Saavedra, and Maria J. Figueras. Aeromonas
taiwanensis sp. nov. and Aeromonas sanarellii sp. nov., clinical species from Taiwan. Int J Syst Evol Microbiol September 2010 60:
2048-2055.
Positive results for catalase, oxidase, nitrates reduction, indole production, arginine
dihydrolase, ONPG (beta-galactosidase), citrate utilization, starch hydrolysis, esculin hydrolysis, gelatin hydrolysis, DN-ase, acid
production from: amygdalin, N-acetylglucosamine, D-fructose, D-galactose, glycerol, glycogen, D-glucose (without gas), D-mannitol,
maltose, raffinose, D-ribose, salicin, sucrose and trehalose.
Negative results for Voges–Proskauer test, hydrolysis of elastin, urease, H2S production from cysteine, lysine decarboxylase,
ornithine decarboxylase, acid production from: L- or D- arabitol, D-arabinose, D-adonitol, cellobiose, dulcitol, erythritol, L- or D-fucose,
gentiobiose, inositol, inulin, myo-inositol, lactose, D-lyxose, methyl beta-D-xylopyranoside, D-mannose, methyl alpha-D-
mannopyranoside, methyl alpha-D-glucopyranoside, melibiose, melezitose, L-rhamnose, D-sorbitol, L-sorbose, turanose, D-
tagatose, xylitol, L- or D-xylose.
dihydrolase, ONPG (beta-galactosidase), citrate utilization, starch hydrolysis, esculin hydrolysis, gelatin hydrolysis, DN-ase, acid
production from: amygdalin, N-acetylglucosamine, D-fructose, D-galactose, glycerol, glycogen, D-glucose (without gas), D-mannitol,
maltose, raffinose, D-ribose, salicin, sucrose and trehalose.
Negative results for Voges–Proskauer test, hydrolysis of elastin, urease, H2S production from cysteine, lysine decarboxylase,
ornithine decarboxylase, acid production from: L- or D- arabitol, D-arabinose, D-adonitol, cellobiose, dulcitol, erythritol, L- or D-fucose,
gentiobiose, inositol, inulin, myo-inositol, lactose, D-lyxose, methyl beta-D-xylopyranoside, D-mannose, methyl alpha-D-
mannopyranoside, methyl alpha-D-glucopyranoside, melibiose, melezitose, L-rhamnose, D-sorbitol, L-sorbose, turanose, D-
tagatose, xylitol, L- or D-xylose.
(c) Costin Stoica
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Differential characters between A. sanarellii and A. taiwanensis
Legend: + positive 90-100%, - negative 90-100%.