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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Proteobacteria => Gammaproteobacteria => Vibrionales => Vibrionaceae => Enterovibrio => Enterovibrio nigricans Pascual et al. 2009.
Gram-negative, motile rods or coccobacilli, 1.0–1.5 x 0.4–0.7 μm.
Chemo-organotrophic and facultatively anaerobic, grow on seawater-based media
such as MA, on which some strains produce a black/deepbrown, slightly diffusible
pigment. Colonies are round, with entire margins and a bright surface. Grow on TSA
supplemented with 1% NaCl. Do not swarm or luminesce. Growth on TCBS agar is
scarce and slow, producing green (non-sucrose-fermenting) colonies.
Growth is observed at 15–28 °C but not at 4 or 37 °C. Requires NaCl for growth.
Media containing 0.9–6.0% total salinity sustain good growth; no growth is observed
at 0.4 or 7% or more salinity.
such as MA, on which some strains produce a black/deepbrown, slightly diffusible
pigment. Colonies are round, with entire margins and a bright surface. Grow on TSA
supplemented with 1% NaCl. Do not swarm or luminesce. Growth on TCBS agar is
scarce and slow, producing green (non-sucrose-fermenting) colonies.
Growth is observed at 15–28 °C but not at 4 or 37 °C. Requires NaCl for growth.
Media containing 0.9–6.0% total salinity sustain good growth; no growth is observed
at 0.4 or 7% or more salinity.
Isolated from the head kidney of Sparus aurata cultured on the Spanish Mediterranean coast.
Unknown.
- Javier Pascual, M. Carmen Macián, David R. Arahal, Esperanza Garay, and María J. Pujalte, Description of Enterovibrio
nigricans sp. nov., reclassification of Vibrio calviensis as Enterovibrio calviensis comb. nov. and emended description of the
genus Enterovibrio Thompson et al. 2002 Int J Syst Evol Microbiol July 2009 59:1850
Positive results for oxidase, Tween 80 hydrolysis, DNA-se, acid production from
glucose (wthout gas production), D-fructose, D-galactose, lactose, melibiose, D-mannitol and D-sorbitol.
Can utilize D-glucose, D-mannose, N-acetyl-D-glucosamine, D-gluconate & L-glutamate.
Negative results for casein hydrolysis, gelatin hydrolysis, starch hydrolysis, alginate hydrolysis, lecithinase, lysine decarboxylase,
ornithine decarboxylase, indole production, Voges–Proskauer test, acid production from D-ribose,D-xylose, L-arabinose, trehalose, L-
rhamnose, maltose, cellobiose, amygdalin, salicin & myo-inositol.
Cannot utilize L-arabinose, D-xylose, trehalose, D-galactose, L-rhamnose, maltose, cellobiose, sucrose, lactose, melibiose, salicin,
amygdalin, D-mannitol, D-sorbitol, myo-inositol, D-glycerate, D-saccharate, D-glucuronate, D-galacturonate, pyruvate, propionate,
butyrate, citrate, trans-aconitate, 2-oxoglutarate, succinate, malate, 3-hydroxybutyrate, glycine, L-leucine, L-serine, L-threonine, L-
alanine, L-arginine, L-tyrosine, L-ornithine, L-citrulline, L-aspartate, L-histidine, L-lysine, L-sarcosine & putrescine.
Variable results for nitrate reduction to nitrite (not to N2), arginine dihydrolase, utilization of: D-ribose, D-fructose, fumarate, acetate,
lactate & glycerol.
glucose (wthout gas production), D-fructose, D-galactose, lactose, melibiose, D-mannitol and D-sorbitol.
Can utilize D-glucose, D-mannose, N-acetyl-D-glucosamine, D-gluconate & L-glutamate.
Negative results for casein hydrolysis, gelatin hydrolysis, starch hydrolysis, alginate hydrolysis, lecithinase, lysine decarboxylase,
ornithine decarboxylase, indole production, Voges–Proskauer test, acid production from D-ribose,D-xylose, L-arabinose, trehalose, L-
rhamnose, maltose, cellobiose, amygdalin, salicin & myo-inositol.
Cannot utilize L-arabinose, D-xylose, trehalose, D-galactose, L-rhamnose, maltose, cellobiose, sucrose, lactose, melibiose, salicin,
amygdalin, D-mannitol, D-sorbitol, myo-inositol, D-glycerate, D-saccharate, D-glucuronate, D-galacturonate, pyruvate, propionate,
butyrate, citrate, trans-aconitate, 2-oxoglutarate, succinate, malate, 3-hydroxybutyrate, glycine, L-leucine, L-serine, L-threonine, L-
alanine, L-arginine, L-tyrosine, L-ornithine, L-citrulline, L-aspartate, L-histidine, L-lysine, L-sarcosine & putrescine.
Variable results for nitrate reduction to nitrite (not to N2), arginine dihydrolase, utilization of: D-ribose, D-fructose, fumarate, acetate,
lactate & glycerol.
(c) Costin Stoica
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