VetBact

Phylum	Class	Order	Family	Genus	Species/Subspecies

Species/Subspecies:

Yersinia pseudotuberculosis

Categories:

Zoonotic; motile

Etymology:

Genus name: named after the French bacteriologist A.J.E. Yersin, who in 1894 first isoleted the bacterium which causes the plague.
Species epithet: from false tuberculosis.

Significance:

[Important]

Taxonomy:

Phylum
Pseudomonadota

Class
Gammaproteobacteria

Order
Enterobacterales

Family
Yersiniaceae

Genus
Yersinia

Type Strain:

ATCC 29833 = CCUG 5855 = NCTC 10275

Macromorphology (smell):

Micromorphology:

Motile rods with peritrichous flagella

Gram +/Gram -:

G-

Metabolism:

Facultatively anaerobic

Catalase/Oxidase:

+/-

Other Enzymes:

Tryptophanase - and urease +

Fermentation of carbohydrates:

Glucose(gas) -, Mannitol +, Rhamnose +, Sorbitol + and Sucrose -. Cf. other Yersinia spp.

Spec. Char.:

Disease:

Animals: pseudotuberculosis.
Man: Food poisoning

Hosts	Disease	Clinical picture
Hares, rabbits, guinea-pigs and other rodents, captive birds and deer	Pseudotuberculosis	Caseous abscesses in mesenteric lymphnodes spreading to spleen and liver and other tissues. Septicemia with high mortality
Humans	Pseudotuberculosis	Abdominal pain, mesenteric lymphadenitis, however uncommon in humans
Sheep	Pseudotuberculosis	Orchitis and epididymitis

Virulence Factors:

The virulence plasmid common to pathogenic Yersinia species encodes a number of secreted proteins denoted Yops (Yersinia outer proteins). A novel plasmid-encoded virulence determinant of Yersinia pseudotuberculosis, YopK has recently been identified.

Genome Sequence:

Acc-no	Strain	Size (bp)	Genome
NC_006155	IP32953	4 744 671	1c + 2c

At least 4 strains have been sequnced and 0-2 plasmids have been rapported in these strains.

16S rRNA Seq.:

Acc-no	Strain	Number of NT	Operon
AF366375	ATCC 29833^T	1461	7

Taxonomy/phylogeny:

Within the genus Yersinia, 20 species have been described. All species belong to the family Enterobacteriaceae.

Reference(s):

No. 174

Updated:

2023-03-29

News
The revised taxonomy of the mollicutes (mycoplasmas) About 2 years ago, the taxonomy of mycoplasmas was revised at VetBact, because a research group had proposed that 5 new genera should be included together with the genus Mycoplasma. This also had consequences for higher taxa within the phylum, which was then called Tenericutes. Now another group of researchers has suggested that the new names should be rejected. Published 2023-10-03. Read more...

News

The revised taxonomy of the mollicutes (mycoplasmas)

About 2 years ago, the taxonomy of mycoplasmas was revised at VetBact, because a research group had proposed that 5 new genera should be included together with the genus Mycoplasma. This also had consequences for higher taxa within the phylum, which was then called Tenericutes. Now another group of researchers has suggested that the new names should be rejected.

Published 2023-10-03. Read more...

VetBact

News

Recently Updated

Recent blog posts