No growth in the presence of 3% NaCl, but can grow in 1% bile or 1% glycine. Grows
on TSI, EMB, MacConkey and Seller agars
. Grows in MRVP broth. Aerobic; anaerobic
respiration occurs in the presence of nitrate, nitrite, and nitrous oxide, with the
formation of N
2. Growth temperature range 15-45 ºC, 35 ºC optimum. A water-soluble
yellow-green fluorescent pigment is produced. Water-soluble brown pigment is not
produced in the presence of tyrosine or tryptophan.
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Betaproteobacteria, Order Neisseriales, Family Chromobacteriaceae, Genus Microvirgula, Microvirgula
aerodenitrificans
Patureau et al. 1998 emend. Cleenwerck et al. 2003 - type species of the genus.

Synonym:
Aquaspirillum dispar Hylemon et al. 1973 (M. aerodenitrificans includes the strains previously classified as A. dispar).
Gram-negative, curved rods, 0.5-0.7 / 2.1-6.5 μm. Motile by bipolar flagella.
Intracellular poly-beta-hydroxybutyrate is formed.
Isolated from an up-flow anoxic filter inoculated with activated sludges and from fresh water.
Undetermined.
  1. 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.
  2. 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).
  3. Cleenwerck I, De Wachter M, Hoste B, Janssens D, Swings J. Int J Syst Evol Microbiol 53(5):1457-1459.
Positive results for arginine dehydrolase, catalase, H2S production from 0.2% cysteine in PSS broth (7 days) (negative in 0.01%
cysteine in NA), nitrate reduction, nitrite reduction, oxidase & phosphatase.
Can utilize as sole carbon source: methylpyruvate, acetate, formate, beta-hydroxybutyrate, propionate, sebacic acid, succinate,
L-asparagine, L-aspartic acid, L-glutamic acid, L-leucine, L-proline, methanol, ethanol & glycerol.

Negative results for deoxiribonuclease, ribonuclease, alkaline reaction in litmus milk, casein hydrolysis, esculin hydrolysis, gelatin
hydrolysis (4 days incubation at 30 ºC), hippurate hydrolysis, indole production, starch hydrolysis, urease, acid production from sugars.

Cannot utilize as sole carbon source: citrate, dextrin, glycogen, xylitol, alpha-ketoglutarate, alpha-ketovalerate, malonate, D-alanine,
L-phenylalanine, D-serine, L-threonine, DL-carnitine, inosine, uridine, 2,3-butanediol, glucose-1-phosphate, D-galacturonic acid &
D-gluconic acid.
Microvirgula aerodenitrificans
(c) Costin Stoica
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