Growth occurs at 12-42 ºC. Cannot grow anaerobically with nitrate. Can grow in the
presence of 1% bile but not in 1% glycine or 3% NaCl. Can grow on EMB and
MacConkey agar, but not on TSI or Sellers agar or in MRVP broth. Range of pH:
6.0-8.5. A fluorescent pigment is produced. No pigment is produced from aromatic
Phylum Proteobacteria, Class Betaproteobacteria, Order Neisseriales, Family Chromobacteriaceae, Genus Aquaspirillum,
Aquaspirillum polymorphum (Williams and Rittenberg 1957) Hylemon et al. 1973.
Gram-negative, helical cells, 0.3-0.5 / 2.0-10.0 μm. Motile by single flagellum at each
pole. Intracellular poly-beta-hydroxybutyrate is formed. Coccoid bodies predominate in
Isolated from pond water.
- Hylemon (P.B.), Wells Jr. (J.S.), Krieg (N.R.) and Jannasch (H.W.): The genus Spirillum: A taxonomic study. International Journal of
Systematic Bacteriology, 1973, 23, 340-380.
- 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.
- Euzeby (J.P.): List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int. J. Syst. Bacteriol.,
1997, 47, 590-592. (List of Prokaryotic names with Standing in Nomenclature. http://www.bacterio.net).
Positive results for catalase, esculin hydrolysis, H2S production from cysteine, nitrate reduction only to nitrite & oxidase. Can utilize
malonate, tartrate, acetate, L-glutamate, L-aspartate, L-glutamine & L-proline.
Negative results for alkaline reaction in litmus milk, casein hydrolysis, DN-ase, gelatin liquefaction (within 4 days), hippurate
hyrolysis, indole production, phosphatase, RN-ase, starch hydrolysis & urease. Acid is not produced from carbohydrates.
Cannot utilize citrate, aconitate, isocitrate, alpha-ketoglutarate, oxaloacetate, propionate, butyrate, caproate, beta-hydroxybutyrate,
ethanol, n-propanol, n-butanol, glycerol, D-fructose, D-glucose, D-xylose, L-arabinose, L-histidine, L-tyrosine, L-phenylalanine,
L-alanine, asparagine, L-hydroxyproline, L-ornithine, L-citrulline, L-arginine, L-lysine, putrescine, L-methionine, L-serine, L-cysteine,
glycine, L-leucine, L-isoleucine, L-valine & L-tryptophan.
Variable results for selenite reduction, utilization of succinate, malate, fumarate, pyruvate & lactate.
(c) Costin Stoica