Campylobacter curvus
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Campylobacteraceae, Genus Campylobacter,
Campylobacter curvus
(Tanner et al. 1984) Vandamme et al. 1991.
Basonym:
Wolinella curva Tanner et al. 1984.
Gram-negative cells, small and curved, 0.5-1 x 2-6 μm, with rounded or tapered ends.
Helical or straight cells also occur.
Motile by means of a single polar flagellum or
bipolar flagella.
Presents a membrane-like polar cap at the extremities. Endospores
are not produced.
Colonies vary from small pinpoint, 1 mm in diameter to spreading colonies up to 5 mm
in diameter. Agar pitting is medium dependent; negative in anaerobic, 3-days-old
cultures on 5% blood agar.
Does not grow microaerobically on common agar bases in an atmosphere without
hydrogen. Does not grow in semisolid medium (0.16% agar), in air, or in an
atmosphere containing O
2:CO2:N2 (5:10:85). Growth is stimulated in broth cultures by
formate and fumarate.
Strains grow in the presence of 0.005% basic fuchsin and 0.04% triphenyl-tetrazolium
chloride. Most strains (80%) will grow on media containing 64 mg/l cefoperazone, 0.1%
potassium permanganate, 0.01% Janus green and not in 2% NaCl or 2% ox bile.
Isolated from lesions in human oral cavities, from a blood culture, peritoneal fluid and from normal and diarrheic feces of humans.
Unknown pathogenicity.
  1. Don J. Brenner and J.J. Farmer III, 2001. Family I. Campylobacteraceae. In: Bergey’s Manual of Systematic Bacteriology, Second
    edition,Vol 2, part C, George M. Garrity (Editor-in-Chief), pp 1145-1168.
  2. P. Vandamme, E. Falsen, R. Rossau, B. Hoste, P. Segers, R. Tytgat, and J. De Ley. Revision of Campylobacter, Helicobacter, and
    Wolinella Taxonomy: Emendation of Generic Descriptions and Proposal of Arcobacter gen. nov. Int J Syst Bacteriol January 1991
    41:88-103.
  3. A. C. R. Tanner, M. A. Listgarten, and J. L. Ebersole. Wolinella curva sp. nov.: “Vibrio succinogenes” of Human Origin. Int J Syst
    Bacteriol July 1984 34:275-282.
Positive results for oxidase, indoxyl acetate hydrolysis & nitrate reduction (most strains).
Negative results for catalase, urea hydrolysis, hippurate hydrolysis (most strains), selenite reduction
& H2S production on TSI. No
carbohydrates fermentation.
(c) Costin Stoica
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