| Arcobacter trophiarum |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Epsilonproteobacteria, Order Campylobacterales, Family Arcobacteraceae, Genus
Arcobacter, Arcobacter trophiarum De Smet et al. 2011.
Arcobacter, Arcobacter trophiarum De Smet et al. 2011.
Gram-negative, slightly curved rods, 1.4-2.0 x 0.3-0.5 μm. Non-encapsulated. Non-spore-forming.
Produce whitish, slightly convex, non-swarming, smooth, rounded colonies with entire
margins of about 2 mm in diameter on blood agar after 48 h of incubation at 28 ºC
under microaerobic conditions and translucent to opaque smooth-rounded colonies
1-2 mm in diameter on Arcobacter selective agar. In a microaerobic atmosphere,
growth is observed after 2 days of incubation at room temperature (18-22 ºC) and 30
ºC but not at 37 or 42 ºC. No growth occurs at 37 ºC in aerobic conditions but does
occur at 25 and 30 ºC on blood agar. No alpha haemolysis is seen on blood agar.
Grows under microaerobic conditions on non-supplemented Campylobacter charcoal
deoxycholate base media and on media containing 1% oxgall, 2% NaCl, 0.1 %
sodium deoxycholate, 32 mg / l cephalothin and 64 mg / l cefoperazone. Variable
growth on MacConkey agar, 1% glycine and on media containing 0.05% safranin. No
growth occurs on minimal medium.
margins of about 2 mm in diameter on blood agar after 48 h of incubation at 28 ºC
under microaerobic conditions and translucent to opaque smooth-rounded colonies
1-2 mm in diameter on Arcobacter selective agar. In a microaerobic atmosphere,
growth is observed after 2 days of incubation at room temperature (18-22 ºC) and 30
ºC but not at 37 or 42 ºC. No growth occurs at 37 ºC in aerobic conditions but does
occur at 25 and 30 ºC on blood agar. No alpha haemolysis is seen on blood agar.
Grows under microaerobic conditions on non-supplemented Campylobacter charcoal
deoxycholate base media and on media containing 1% oxgall, 2% NaCl, 0.1 %
sodium deoxycholate, 32 mg / l cephalothin and 64 mg / l cefoperazone. Variable
growth on MacConkey agar, 1% glycine and on media containing 0.05% safranin. No
growth occurs on minimal medium.
Isolated from faecal samples from fattening pigs on two Belgian farrow-to-finish farms.
Undetermined.
- De Smet S, Vandamme P, De Zutter L, On SL, Douidah L, Houf K. Arcobacter trophiarum sp. nov., isolated from fattening pigs. Int
J Syst Evol Microbiol 2011; 61:356-361. - Figueras MJ, Collado L, Levican A, Perez J, Solsona MJ, Yustes C. Arcobacter molluscorum sp. nov., a new species isolated from
shellfish. Syst Appl Microbiol 2011; 34:105-109. - Whiteduck-Leveillee K, Whiteduck-Leveillee J, Cloutier M, Tambong JT, Xu R, Topp E, Arts MT, Chao J, Adam Z, Andre Levesque
C, et al. Arcobacter lanthieri sp. nov., isolated from pig and dairy cattle manure. Int J Syst Evol Microbiol 2015; 65:2709-2716. - Levican A, Rubio-Arcos S, Martinez-Murcia A, Collado L, Figueras MJ. Arcobacter ebronensis sp. nov. and Arcobacter aquimarinus
sp. nov., two new species isolated from marine environment. Syst Appl Microbiol 2015; 38:30-35.
Positive results for catalase, indoxyl acetate hydrolysis and oxidase.
Negative results for hippurate hydrolysis, nitrate reduction and urease.
Variable results for alkaline phosphatase.
Negative results for hippurate hydrolysis, nitrate reduction and urease.
Variable results for alkaline phosphatase.
(c) Costin Stoica
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