Edwardsiella hoshinae
Pathogenicity
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacterales, Family Hafniaceae, Genus Edwardsiella, Edwardsiella
hoshinae
Grimont et al. 1981.
Gram-negative, straight bacilli, 1.0 x 2.0-3.0 μm, usually motile by peritrichous flagella
(nonmotile strains may occur). No capsule production.
Growth occurs on usual media, producing small colonies (0.5-1.0 mm in diameter)
after 24 h incubation. Optimum temperature, 37 ºC. Facultatively anaerobic.
Isolated from birds, reptiles, and water.
There is no evidence that can cause diarrhea.
  1. Don J. Brenner and J.J. Farmer III, 2001. Family I. Enterobacteriaceae. In: Bergey’s Manual of Systematic Bacteriology, Second
    edition, Vol two, part B, George M. Garrity (Editor-in-Chief), pp 587-897.
  2. J. G. Holt et al., 1994. Facultatively Anaerobic Gram-Negative Rods. Subgroup 1. Family Enterobacteriaceae. In: Begey’s Manual of
    Determinative Bacteriology, 9th-edition, Williams & Wilkins, pp175-189.
  3. De Vos et al.: Judicial Commission of the International Committee on Systematics of Prokaryotes Xth International (IUMS)
    Congress of Bacteriology and Applied Microbiology. Minutes of the meetings, 28, 29 and 31 July and 1 August 2002, Paris, France.
    Int. J. Syst. Evol. Microbiol., 2005, 55, 525-532.
  4. Adeolu M, Alnajar S, Naushad S, S Gupta R. Genome-based phylogeny and taxonomy of the 'Enterobacteriales': proposal for
    Enterobacterales ord. nov. divided into the families Enterobacteriaceae, Erwiniaceae fam. nov., Pectobacteriaceae fam. nov.,
    Yersiniaceae fam. nov., Hafniaceae fam. nov., Morganellaceae fam. nov., and Budviciaceae fam. nov. Int J Syst Evol Microbiol
    2016; 66:5575-5599.
Positive results for catalase, lysine decarboxylase, malonate utilization, nitrate reduction, ornithine decarboxylase, acid production
from: maltose, mannose and glucose (usually with gas production).

Negative results for arginine dihydrolase, citrate utilization (Simmons), DN-ase, esculin hydrolysis, gelatinase, beta-galactosidase,
beta-glucuronidase, lipase (Tween 80), oxidase, L-pyrrolidonyl aminopeptidase, phenylalanine deaminase,growth in KCN medium,
urease (Christensen), Voges-Proskauer, acid production from: adonitol, D-arabitol, alpha-methyl-D-glucoside, D-cellobiose, dulcitol,
inositol, lactose, melibiose, raffinose, L-rhamnose, D-sorbitol and D-xylose.
(c) Costin Stoica
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R E G N U M
PROKARYOTAE
Legend:  + positive 90-100%, - negative 90-100%, [+] positive 75-89%, [-] negative 75-89%, d positive 25-74% of strains
 
Hydrogen
sulfide (TSI)
Methyl red
Indole
production
L-Arabinose
fermentation
D-Mannitol
fermentation
Sucrose
fermentation
Trehalose
fermentation
E. tarda / E. piscicida
+
+
+
-
-
-
-
E. tarda biogroup 1
-
+
+
+
+
+
-
E. hoshinae
+
+
d
[-]
+
+
+
E. ictaluri
+
-
-
-
-
-
-
Differential characters between Edwardsiella species:
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