1. Don J. Brenner & J.J. Farmer III,2004, Family I. Enterobacteriaceae, In:  Bergey’s Manual of Systematic Bacteriology, Second
    edition,Vol two, part B, George M. Garrity (Editor-in-Chief),   pp. 740-744.
Genus Plesiomonas
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacteriales, Family Enterobacteriaceae, Genus Plesiomonas,  
Plesiomonas shigelloides corrig. (Bader 1954) Habs and Schubert 1962, single species of the genus.
Historical synonyms:  
Pseudomonas shigelloides Bader 1954, Aeromonas shigelloides (Bader 1954) Ewing et al. 1961, Fergusonia
shigelloides
(Bader 1954) Sebald and Véron 1963, Pleisomonas shigelloides
Gram negative rod-shaped cells, 0.8–1.0 x 3.0 µm. Motile.
1.0–2.0 mm flat, colorless colonies on MacConkey, xylose–lysine–desoxycholate,
Hektoen enteric, and desoxycholate agars after 24 h growth. Produce uniform turbidity
in liquid culture, without pellicle formation.
Grow in 6.5% NaCl.
Media: Sheep blood agar, MacConkey agar, Alkaline peptone water, Bile salts-brilliant
green agar, XLD agar, BHI broth.
Incubation temperature 8 - 40 ºC, optimum 37 ºC.
Isolated from aquatic invertebrates (shellfish, crustaceans), amphibians (newts, salamanders, toads) and land animals (snakes,
birds, mice, raccoons, dogs, cats, pigs, goats, sheep, cattle, monkeys). In humans and domestic animals was isolated from the
intestines of healthy subjects and diarrhea samples.
Susceptible to 2,4-diamino-6,7-diisopropylpteridine (O/129 agent).
Associated with diarrhea and extra-intestinal infections in humans. May cause septicemia in immunosuppressed organisms.
Positive results for: oxidase, catalase, nitrates reduction, lysine decarboxylase ornithine
decarboxylase,  arginine dihydrolase, ONPG, indole production, acid production from
D-glucose (without gas), glycerol, inositol, maltose & trehalose.

Negative results for: starch hydrolysis, growth in KCN, H
2S production on TSI, Voges-Proskauer, urease, esculin hydrolysis,
gelatinase, lecithinase, acid production from starch, adonitol, amygdalin, arabinose, cellobiose, esculin, fructose, glycogen, inulin,
mannitol, melezitose, raffinose, rhamnose, saccharose, sorbitol & xylose. Citrate, gluconate, malonate, and mucate are not utilized.
(c) Costin Stoica
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