Colonies are colorless, translucent, circular, convex, with an entire margin, up to 0.2
mm in diameter. Anaerobic, having a fermentative type of metabolism. Growth occurs
at 30-35 ºC, but not at 25 ºC or 40 ºC. Grows at pH 7.1-7.9, but not at pH 6.7 or 8.2.
Taxonomy
Morphology
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Pathogenicity
References
Phylum Proteobacteria, Class Betaproteobacteria, Order Neisseriales, Family Chromobacteriaceae, Genus Formivibrio, Formivibrio
citricus
Tanaka et al. 1991, type species of the genus.
Gram-negative, curved rods, 0.5-0.6 x 1.1-2.5 μm. Motile by one polar flagellum. Cells
contain beta-hydroxymyristic acid. Spores are not formed.
Isolated from anoxic mud samples of a creek and from a pond.
Undetermined.
  1. Tanaka K., Nakamura K. and Mikami E.: Fermentation of S-citramalate, citrate, mesaconate, and pyruvate by a gram-negative
    strictly anaerobic non-spore-former, Formivibrio citricus gen. nov., sp. nov. Arch. Microbiol., 1991, 155, 491-495.
  2. Sato K., Kato Y., Taguchi G., Nogawa M., Yokota A. and Shimosaka M.: Chitiniphilus shinanonensis gen. nov., sp. nov., a novel
    chitin-degrading bacterium belonging to Betaproteobacteria. J. Gen. Appl. Microbiol., 2009, 55, 147-153.
  3. 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).
S-citramalate, citrate, mesaconate, and pyruvate are fermented to acetate and formate
and serve as carbon and energy sources.

Negative results for catalase, chitin hydrolysis, esculin hydrolysis, gelatin hydrolysis, beta-glucosidase, indole production, nitrate
reduction, sulfate reduction, sulfite reduction, thiosulfate reduction, S
0 reduction, urease.
Does not utilize acetoin, acrylate, citraconate, R-citramalate, crotonate, fumarate, L-glutamate, glycerol, H
2/CO2/acetate, lactate,
DL-threo-beta-methylaspartate, L-malate, maleate, oxalate/acetate, peptones, yeast extract, or carbohydrates.
Formivibrio citricus
(c) Costin Stoica
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