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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
Proteobacteria
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.
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. enterica, Salmonella enterica subsp. diarizonae, 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.

We strongly recommend the new system to be used.
Link: Salmonella nomenclature
Updated:2022-04-06

News

New families introduced within the order Enterobacterales
Phylogenetic tree for the order <i>Enterobacteriales</i>.

The order Enterobacterales (formerly called Enterobacteriales) previously consisted of bacteria with different properties and phylogenetically, these bacteria were far apart. In order for the taxonomy to be more in line with phylogeny, some of these bacteria have, therefore, been sorted into 6 new families.

Published 2022-04-13. Read more...

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