Colonies on horse blood agar are round transparent and domed, about 1 mm in
diameter after 24 h. Some strains may produce a yellow pigment. Non-hemolytic
(weak hemolysis may appear on sheep blood agar). Grows aerobically at 35 ºC. No
anaerobic growth. Can grow on nutrient agar.
Phylum Proteobacteria, Class Betaproteobacteria, Order Neisseriales, Family Neisseriaceae, Genus Neisseria, Neisseria dentiae
Sneath and Barrett 1997.
Gram-negative small cocci about 1 µm in diameter, arranged mainly as diplococci
with occasional tetrads. Nonmotile. Endospores are not produced.
Isolated from dental plaques of domestic cows.
Undetermined. May have impact on dental microbiology.
- Tone Tonjum, 2005. Order IV. Neisseriales ord. nov. In: Bergey’s Manual of Systematic Bacteriology, Second edition, Vol two, part C
The Alpha-, Beta-, Delta-, and Epsilonproteobacteria, George M. Garrity (Editor-in-Chief), pp 774-863.
Positive results for catalase, iodine test (polysaccharide synthesis from sucrose),
oxidase, acid production from: fructose, gluconate, glucose & sucrose.
Negative results for gelatin hydrolysis, indole production, nitrate and nitrite reduction, tributyrin hydrolysis, acid production from:
lactose, maltose & mannose.
(c) Costin Stoica