| Arcobacter cloacae |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Epsilonproteobacteria, Order Campylobacterales, Family Arcobacteraceae, Genus
Arcobacter, Arcobacter cloacae Levican et al. 2013.
Synonym: Pseudarcobacter cloacae corrig. (Levican et al. 2013) Perez-Cataluna et al. 2019.
Arcobacter, Arcobacter cloacae Levican et al. 2013.
Synonym: Pseudarcobacter cloacae corrig. (Levican et al. 2013) Perez-Cataluna et al. 2019.
Gram-negative, slightly curved rods, 0.3-0.5 x 1.0-1.5 μm. Motile by a single polar flagellum. Non-spore-forming. Non-encapsulated.
Colonies on blood agar incubated in aerobic conditions at 30 ºC for 48 h are 2-4 mm
in diameter, beige to off-white, circular with entire margins, convex, and
non-swarming. Pigments are not produced. All the strains grow on blood agar at
room temperature (18-22 ºC), 30 ºC and 37 ºC under both aerobic and microaerobic
conditions with no significant differences. No growth is observed in anaerobic
conditions at 30 ºC or in aerobic or microaerobic conditions at 42 ºC. No haemolysis
is observed on TSA medium supplemented with 5% sheep blood. Under aerobic
conditions at 30 ºC grows on Marine Agar, Campylobacter Charcoal Deoxycholate
Agar (CCDA), MacConkey agar and on nutrient medium + 5% sheep blood also
containing 0.5-2% (w/v) NaCl; 0.1% sodium deoxycholate; 1% oxgall; 0.05% safranin
or 0.0005% crystal violet. No growth occurs on nutrient medium + 5%sheep blood
also containing 4%(w/v) NaCl; 1% glycine; 0.04-0.1% TTC; or 64 mg / l cefoperazone.
Variable growth on minimal medium and on nutrient medium supplemented with 5%
sheep blood containing 0.005% basic fuchsine or 0.001% brilliant green.
in diameter, beige to off-white, circular with entire margins, convex, and
non-swarming. Pigments are not produced. All the strains grow on blood agar at
room temperature (18-22 ºC), 30 ºC and 37 ºC under both aerobic and microaerobic
conditions with no significant differences. No growth is observed in anaerobic
conditions at 30 ºC or in aerobic or microaerobic conditions at 42 ºC. No haemolysis
is observed on TSA medium supplemented with 5% sheep blood. Under aerobic
conditions at 30 ºC grows on Marine Agar, Campylobacter Charcoal Deoxycholate
Agar (CCDA), MacConkey agar and on nutrient medium + 5% sheep blood also
containing 0.5-2% (w/v) NaCl; 0.1% sodium deoxycholate; 1% oxgall; 0.05% safranin
or 0.0005% crystal violet. No growth occurs on nutrient medium + 5%sheep blood
also containing 4%(w/v) NaCl; 1% glycine; 0.04-0.1% TTC; or 64 mg / l cefoperazone.
Variable growth on minimal medium and on nutrient medium supplemented with 5%
sheep blood containing 0.005% basic fuchsine or 0.001% brilliant green.
Isolated from sewage from the Waste Water Treatment Plant of Reus, Catalonia, Spain, shellfish, water-flooded petroleum reservoirs
in China and from an industrial anaerobic digester in Mexico.
in China and from an industrial anaerobic digester in Mexico.
Undetermined.
- Levican A, Collado L, Figueras MJ. Arcobacter cloacae sp. nov. and Arcobacter suis sp. nov., two new species isolated from food
and sewage. Syst Appl Microbiol 2013; 36:22-27.
Positive results for catalase, indoxyl acetate hydrolysis, nitrate reduction and oxidase.
Negative results for amylase, casein hydrolysis, H2S production on TSI, lecithinase and urease.
Negative results for amylase, casein hydrolysis, H2S production on TSI, lecithinase and urease.
(c) Costin Stoica
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