Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Campylobacteraceae, Genus Arcobacter,
Arcobacter nitrofigilis (McClung et al. 1983) Vandamme et al. 1991. Type species of the genus.
Basonym: Campylobacter nitrofigilis McClung et al. 1983.
Gram-negative, small, curved rods, 0.2-0.9 x 1-3 μm. Rarely helical cells. Coccoid
forms develop in old cultures. Motile by means of a single polar flagellum. Not
swarming on moist media.
Colonies are 2-3 mm in diameter, circular, convex, and have a beige to off-white color
after 48 hours incubation. A brown, water-soluble pigment is produced from
tryptophan. No growth at 4 or 42 ºC. Optimum growth temperature 25-30 ºC.
Does not grow at 37 ºC under aerobic or microaerobic conditions. Grows on media
containing 0.05% sodium fluoride, 1-7% NaCl, 0.02% safranin, KMnO4 but not on
charcoal-based media, or media containing 1.0-2.0% ox bile or 1% glycine.
Isolated from the roots and root-associated sediments of Spartina alterniflora growing in saline marshes.
Undetermined. Nitrogen fixing bacteria.
- 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.
- 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
Positive results for urease, catalase, nitrate reduction, oxidase, indoxyl acetate hydrolysis & H2S production on TSI.
Negative results for alkaline phosphatase, DN-ase & hippurate hydrolysis. No carbohydrates fermentation.
(c) Costin Stoica