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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Plesiomonas shigelloides
Etymology: Genus name: neighbour unit (to the genus Aeromonas)
Species epithet: similar to genus Shigella
Significance:  [Of minor importance]   
Taxonomy:
Phylum
Proteobacteria
Class
Gammaproteobacteria
Order
Enterobacterales
Family
"Inserta sedis" 
Genus
Plesiomonas
"Incertae sedis" means that the taxonomic affiliation has not been established.
Type Strain: M51 = ATCC 14029 = CCUG 410 = NCTC 10360
Macromorphology (smell):
   
Small convex colonies (1-3 mm in diameter). Does not give hemolysis on blood agar.
Micromorphology:
Gram +/Gram -:
 
G-
Metabolism: Facultatively anaerobic
Catalase/Oxidase:+/+
Fermentation of carbohydrates: Lactose -
Spec. Char.:
Special Media:
Plesiomonas shigelloides  
P. shigelloides is growing well on purple agar, but does not ferment lactose.
Disease:Enteric disease
Hosts: Fish, reptiles, mammals (inkluding man)
Clinical Picture: Diarrhea (man)
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
M59159 (T) 1489  

Taxonomy/phylogeny:
 
Within the genus Plesiomonas, only one species have been described and this bacterium belongs to the family Enterobacteriaceae. P. shigelloides is not that closely related to other members of the family Enterobacteriaceae, which is in accordance with the fact that it is the only member of the family Enterobacteriaceae, which is oxidase positive.
Comment:Note: is the only member of the family Enterobacteriaceae, which is oxidase positive.
Reference(s): No. 30, 174
Updated:2022-04-15

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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