Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Helicobacteraceae, Genus Helicobacter,
Helicobacter pullorum Stanley et al. 1995.
Gram-negative, slightly curved rods, 0.3-0.5 x 3-4 μm. Motile by means of a single,
unsheathed, polar flagellum.
Colonies are pinpoint to 1 mm in diameter, nonpigmented, smooth, and translucent
after 3 days incubation on blood agar at 37 ºC. Alpha-hemolytic. Most strains grow at
42 ºC and on 1% bile media under microaerobic conditions. Most strains are
resistant to cephalothin (32 mg/l) and cefoperazone (64 mg/l) but not to nalidixic acid.
Isolated from the ceca of asymptomatic broiler chickens, the liver and intestinal contents of chickens suffering from vibrionic hepatitis,
and from human diarrhea.
- George M. Garrity, Julia A. Bell and Timothy Lilburn, 2001. Family II. Helicobacteraceae. In: Bergey’s Manual of Systematic
Bacteriology, Second edition, Vol 2, part C, George M. Garrity (Editor-in-Chief), pp 1168-1195.
- John Stanley, Dennis Linton, André P. Burnens, Floyd E. Dewhirst, Stephen L. W. On, Anthony Porter, Robert J. Owen, and
Menelaos Costas. Helicobacter pullorum sp. nov. - genotype and phenotype of a new species isolated from poultry and from
human patients with gastroenteritis. Microbiology December 1994 140:3441-3449.
Positive results for catalase (most strains), nitrate reduction and hydrogen sulfide.
Negative results for urease and indoxyl acetate hydrolysis.
(c) Costin Stoica