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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Peptoniphilus indolicus
Category: Causes hemolysis
Etymology: Genus name: peptone loving.
Species epithet: indol producing.
Significance:  [Of minor importance]   
Alternative Species Name(s):Peptostreptococcus indolicus
Taxonomy:
Phylum
Bacillota
Class
Clostridia
Order
Clostridiales
Family
Peptostreptococcaceae 
Genus
Peptoniphilus
Type Strain: ATCC 29427.
Macromorphology (smell):
Peptoniphilus indolicus  
Small (0.5-1.0 mm), grayish colonies. Most strains give no hemolysis.
Micromorphology: Cocci (0.5-0.6 µm in diameter), which appear single, in pairs, short chains or small clusters.
Gram +/Gram -:G+
Metabolism: Obligately anaerobic
Catalase/Oxidase:-/-
Other Enzymes: Coagulase + (most strains), tryptophanase (+), urease -.
Fermentation of carbohydrates: Peptoniphilus spp. do not ferment carbohydrates.
Spec. Char.:
Special Media:
Disease:Bovine summer mastitis (in combination with Trueperella pyogenes).
HostsDiseaseClinical picture
CattleMastitisSummer mastitis often in combination with Trueperella pyogenes
CalfArhtritisOften polyarthritis with infection in multiple joints
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
D14147 (T) 1372  

Taxonomy/phylogeny:
Peptoniphilus indolicus  
About 50 species have been described within the genus Peptoniphilus and this genus belong to the order Clostridiales. However, P. indolicus is not that closely related to clostridia.
Updated:2023-03-08

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