| Enterobacter siamensis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacteriales, Family Enterobacteriaceae, Genus Enterobacter,
Enterobacter siamensis Khunthongpan et al. 2014.
Enterobacter siamensis Khunthongpan et al. 2014.
Gram-negative rods, 0.5-0.6 x 1.2-1.6 µm, occurring singly or in pairs. Motile by
peritrichous flagella. Non‐spore-forming.
peritrichous flagella. Non‐spore-forming.
Colonies on Nutrient Agar are creamy white, mucoid, translucent, raised, with
entire margins, and 5-9 mm in diameter after 48 h of incubation at 37 ºC. Growth
occurs at 10-45 ºC; optimal growth temperature is 37 ºC. Growth occurs between pH
4.0-10.5 (optimally at pH is 6.0-7.0). Growth occurs in the presence of 0-7.5% (w/v)
NaCl (optimally with 0% NaCl). Facultatively anaerobic. Grows well on MacConkey
agar. No growth on bile salt medium.
entire margins, and 5-9 mm in diameter after 48 h of incubation at 37 ºC. Growth
occurs at 10-45 ºC; optimal growth temperature is 37 ºC. Growth occurs between pH
4.0-10.5 (optimally at pH is 6.0-7.0). Growth occurs in the presence of 0-7.5% (w/v)
NaCl (optimally with 0% NaCl). Facultatively anaerobic. Grows well on MacConkey
agar. No growth on bile salt medium.
Isolated from seafood processing wastewater collected from a treatment pond of a seafood factory in Songkhla Province, Thailand.
Undetermined.
- Khunthongpan S, Bourneow C, H-Kittikun A, Tanasupawat S, Benjakul S, Sumpavapol P. Enterobacter siamensis sp. nov., a
transglutaminase-producing bacterium isolated from seafood processing wastewater in Thailand. J Gen Appl Microbiol 2013; 59:
135-140.
Positive results for arginine dihydrolase, catalase, citrate utilization, esculin hydrolysis, ONPG, ornithine decarboxylase, oxidase,
tryptophan deaminase, Voges-Proskauer test, acid production from amygdalin, L-arabinose, arbutin, D-cellobiose, esculin,
D-galactose, D-glucose, gentiobiose, glycerol, inositol, D-lactose, D-lyxose, D-maltose, D-mannitol, D-mannose, D-melibiose,
methyl-alpha-D-glucopyranoside, D-raffinose, D-ribose, L-rhamnose, D-saccharose, salicin, D-sorbitol, D-trehalose, D-turanose, and
D-xylose.
Negative results for casein hydrolysis, gelatin hydrolysis, H2S production, indole production, lysine decarboxylase, methyl-red reaction,
starch hydrolysis, tyrosine hydrolysis, Tween 80 hydrolysis, urease, acid production from D-adonitol, D-arabinose, D- and L-arabitol,
dulcitol, erythritol, D-fructose, D- and L-fucose, glycogen, gluconate, 2- and 5-ketogluconate, inulin, D-melezitose,
methyl-alpha-D-mannopyranoside, N-acetylglucosamine, L-sorbose, starch, D-tagatose, L-xylose, methyl-beta-D-xylopyranoside, and
xylitol.
tryptophan deaminase, Voges-Proskauer test, acid production from amygdalin, L-arabinose, arbutin, D-cellobiose, esculin,
D-galactose, D-glucose, gentiobiose, glycerol, inositol, D-lactose, D-lyxose, D-maltose, D-mannitol, D-mannose, D-melibiose,
methyl-alpha-D-glucopyranoside, D-raffinose, D-ribose, L-rhamnose, D-saccharose, salicin, D-sorbitol, D-trehalose, D-turanose, and
D-xylose.
Negative results for casein hydrolysis, gelatin hydrolysis, H2S production, indole production, lysine decarboxylase, methyl-red reaction,
starch hydrolysis, tyrosine hydrolysis, Tween 80 hydrolysis, urease, acid production from D-adonitol, D-arabinose, D- and L-arabitol,
dulcitol, erythritol, D-fructose, D- and L-fucose, glycogen, gluconate, 2- and 5-ketogluconate, inulin, D-melezitose,
methyl-alpha-D-mannopyranoside, N-acetylglucosamine, L-sorbose, starch, D-tagatose, L-xylose, methyl-beta-D-xylopyranoside, and
xylitol.
(c) Costin Stoica
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