Aeromonas allosaccharophila
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Aeromonadales, Family Aeromonadaceae, Genus Aeromonas,  
Aeromonas allosaccharophila
Martinez-Murcia et al. 1992.
According to Nhung et al. 2007,
Aeromonas allosaccharophila is a later heterotypic synonyms of Aeromonas veronii.
Gram-negative, straight rods with rounded ends, sometimes coccobacilli, 0.3-1.0 x
1.0-3.5 µm. Motile by a polar flagellum.
Colonies are smooth, circular, convex, translucent, 1–3 mm in diameter. No brown,
water-soluble pigment is produced on TSA medium. Hemolysis on sheep blood agar
is variable. Mesophilic, growth temperature 10-42 ºC, optimum 28 ºC. Can grow in
nutrient broth with: 0 and 3% NaCl. Can grow at pH 9.0, but not at pH 4.5.
Isolated from diseased elvers (migrating young eels) in Spain and diarrheic stools. Resistant to vibriostatic agent O/129.
Undetermined, but the isolation from elvers suggest a possible fish pathogen.
  1. Amy Martin-Carnahan and Samuel W. Joseph 2004. Order XII. Aeromonadales ord. nov. In:  Bergey’s Manual of Systematic
    Bacteriology, Second edition,Vol two, part B, George M. Garrity (Editor-in-Chief),   pp. 556-587.
  2. Brian Austin, Dawn A. Austin. Bacterial Fish Pathogens. Disease of Farmed and Wild Fish. 5th ed. 2012.
  3. Pham Hong Nhung, Hiroyuki Hata, Kiyofumi Ohkusu, Makiko Noda, Mohammad Monir Shah, Keiichi Goto, and Takayuki Ezaki.
    Use of the novel phylogenetic marker dnaJ and DNA–DNA hybridization to clarify interrelationships within the genus Aeromonas.
    Int J Syst Evol Microbiol June 2007 57:1232-1237.
Positive results for catalase, oxidase, nitrate reduction, indole production, ONPG,
acetate utilization, gelatin hydrolysis, lysine decarboxylase, corn oil lipase, acid
production from: D-glucose (with gas production), cellobiose, maltose, sucrose,
D-trehalose, glycerol & D-mannitol.

Negative results for urea hydrolysis, malonate utilization, growth on KCN medium, Voges-Proskauer test, DN-ase, mucate utilization,
acid production from: D-xylose, lactose, adonitol, dulcitol, erythritol, inositol, D-sorbitol, alpha-methyl-D-glucoside, salicin, melibiose,
D-amygdalin & D-arabitol.

Variable results for citrate utilization, arginine dihydrolase, ornithine decarboxylase, H
2S production from cysteine thiosulfate, esculin
hydrolysis, acid production from: L-arabinose, L-rhamnose & D-raffinose.
(c) Costin Stoica
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