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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Salmonella enterica
Category: Motile
Etymology: Genus name: named after the American bacteriologist D. E. Salmon.
Species epithet: of the gut.
Signi­ficance:  [Very important]   
Alternative Species Name(s):Salmonella choleraesuis
Taxonomy:
Phylum
Pseudomonadota
Class
Gammaproteobacteria
Order
Enterobacterales
Family
Enterobacteriaceae 
Genus
Salmonella
Type Strain: See individual subspecies.
Macromorphology (smell): Medium sized colonies (2-4 mm in diameter).
Micromorphology: Straight rods (0.7-1.5 x 2.0-5.0 µm). Most strains are peritrochous (flagella all over the surface) and ,therfore, motile.
Gram +/Gram -:G-
Metabolism: Facultatively anaerobic
Catalase/Oxidase:+/-
Other Enzymes: Hydrogen sulfide (H2S) +, ornithine decarboxylase +, tryptophanase (indole) -, urease -.
Biochemical Tests: Citrate +, methyl red +, Voges-Proskauer -.
Spec. Char.: See individual subspecies.
Special Media:
Disease:See individual subspecies.
Hosts: See individual subspecies.
Clinical Picture: See individual subspecies.
16S rRNA Seq.:  -
Taxonomy/­phylogeny: There are two taxonomic systems for genus Salmonella, but the old system has mainly been abandoned. The names av the different subspecies of Salmonella enterica should accordingly be:  Salmonella enterica subsp. arizonae, Salmonella enterica subsp. diarizonae, Salmonella enterica subsp. enterica, Salmonella enterica subsp. houtenae, Salmonella enterica subsp. indica och Salmonella enterica subsp. salamae.

Only Salmonella enterica subsp. arizonae and Salmonella enterica subsp. enterica are included in VetBact Hundreds of serovars have been identified among these two subspecies and some of those that occur frequently in the latter subspecies are listed in the Term List under Salmonella serovars. .

We strongly recommend the new system to be used.
Link: Salmonella nomenclature
Updated:2023-03-29
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