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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Prevotella melaninogenica
Category: Causes hemolysis
Etymology: Genus name: named after the French microbiologist, A. R. Prévot, who was a pioneer in anaerobic microbiology
Species epithet: melanin producing (note however, that the black pigment is composed of protoheme and not to melanin, as was originally believed)
Significance:  [Important]   
Old Species Name(s):Bacteroides melaninogenicus
Taxonomy:
Phylum
Bacteroidetes
Class
Bacteroidia
Order
Bacteroidales
Family
Prevotellaceae 
Genus
Prevotella
Type Strain: Finegold B282 = ATCC 25845 = CCUG 4944 B = NCTC 12963
Macromorphology (smell): Small glossy colonies (0.5-2 mm in diameter) with a black center, which fluoresces under UV light. After prolonged incubation, the colonies become completely black due to pigmentation (an heme derivative). Only a few strains are hemolytic.
Micromorphology: Nonmotile pleomorphic rods
Gram +/Gram -:G-
Metabolism: Obligately anaerobic
Catalase/Oxidase:-/-
Spec. Char.:
Disease:Footrot and foot abscesses of cattle and wound infections in dog and cat
Hosts: Cattle, dog and cat
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
 ATCC 25845T   

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
L16469 (T) 1478  

Taxonomy/phylogeny:
Prevotella melaninogenica  
About 50 species have been described within genus Prevotella. Many species, which were earlier affiliated with genus Bacteroides, have now been transfered to genus Porphyromonas or genus Prevotella. These three genera are related and belong to the order Bacteroidales.
Comment:Is often isoleras together with Fusobacterium necrophorum and Trueperella pyogenes from animals suffering from foot rot.
Updated:2020-09-30

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