Campylobacter rectus
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Campylobacteraceae, Genus Campylobacter,  
Campylobacter rectus
(Tanner et al. 1981) Vandamme et al. 1991.
Basonym:
Wolinella recta Tanner et al. 1981.
Gram-negative cells, small and straight,  with rounded ends, 0.5 x 2-4 μm. Motile by
means of a single polar flagellum. Surface is covered with a distinctive array of
hexagonal, packed, macromolecular subunits, each about 17 nm in diameter.
Colonies may be small pinpoint, 1 mm to 5 mm in diameter. Agar pitting is medium
dependent.
Optimal growth in anaerobic conditions. Does not grow microaerobically on common
agar bases in an atmosphere without hydrogen. Does not grow in air, in a CO
2 -
enriched atmosphere, or in an atmosphere containing O
2/CO2/N2 (5:10:85) on
common agar bases. In broth cultures, growth is stimulated by formate and fumarate.
No growth at 25 or 42 ºC. Grows in the presence of 1% glycine, 1.0% ox-bile, 2%
NaCl, but not in KMnO
4 , 0.05% sodium fluoride, 0.04% triphenyl-tetrazolium chloride,
0.01% Janus green or 64 mg/l cefoperazone.
Found in gingival crevices of humans.
Unknown.
  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. Anne C. R. Tanner, Shirley Badger, C.-H. Lai, Max A. Listgarten, Roberta A. Visconti, and Sigmund S. Socransky. Wolinella gen.
    nov., Wolinella succinogenes (Vibrio succinogenes Wolin et al.) comb. nov., and Description of Bacteroides gracilis sp. nov.,
    Wolinella recta sp. nov., Campylobacter concisus sp. nov., and Eikenella corrodens from Humans with Periodontal Disease. Int J
    Syst Bacteriol October 1981 31:432-445.
Positive results for oxidase, indoxyl acetate hydrolysis, selenite reduction, nitrate reduction & neutral red reduction.
Negative results for alkaline phosphatase, catalase (most strains),
H2S production on TSI, urease. Starch, hippurate, dextran, esculin,
casein, DNA, and gelatin are not hydrolyzed. No carbohydrates fermentation.
(c) Costin Stoica
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