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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Chlamydia abortus
Category: Notifiable diseases and bacteria
Etymology: Genus name: cloac loving.
Species epithet: of abortion.
Significance:  [Important]   
Alternative Species Name(s):Chlamydia psittaci
Taxonomy:
Phylum
Chlamydiota
Class
Chlamydiia
Order
Chlamydiales
Family
Chlamydiaceae 
Genus
Chlamydia
Type Strain: B577 = ATCC VR-656.
Macromorphology (smell): Does only grow intracellularly and can, therfore, not be cultivated on artificial substrates.
Micromorphology: Outside the host cell: infectious elementary bodies (0.2-0.3 µm).
Within the host cell: non-infectious reticulate bodies (0.8-1.0 µm). Non-motile.
Gram +/Gram -:G-, difficult to gram stain.
Metabolism: Aerobic, but members of the family Chlamydiaceae have only limited resources to to synthesize their own ATP. Therefore, they can ingest ATP from the host cell.
Catalase/Oxidase:
Spec. Char.:
Disease:Enzootic abortion of ewes, ovine chlamydiosis.
Hosts: Cattle, sheep, goat, pig
Clinical Picture: Abortion
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_004552 S26/3 1 144 377  

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
D85709 ATCC VR-656T 1 548 

Taxonomy/phylogeny:
 
Species within the family Chlamydiaceae were previously (1999) divided into two genera Chlamydia and Chlamydophila. However, the differences between these two genera were not that great and many research groups have not accepted this division. Therefore, the genus Chlamydophila has been returned (2015) to the genus Chlamydia. See the references below.
Legislation: The disease in cattle and sheep is notifiable (to the Swedish Board of Agriculture) in Sweden.
Comment:Strictly intracellular. The cell envelope contains cystein rich proteins and only a small amount of peptidoglycans.
Reference(s): No. 68, 140, 177
Links: The comprehensive reference and education wiki on Chlamydia and the Chlamydiales, Klamydia-föreläsning
Updated:2023-03-15

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