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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
Firmicutes
Class
Clostridia
Order
Clostridiales
Family
Peptostreptococcaceae 
Genus
Peptoniphilus
Type Strain: ATCC 29427.
Macromorphology (smell):
 
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.:
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:
 
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:2021-06-14

News

New names of taxa within the classification category phylum

During October 2021, an article was published by A. Oren och G.M. Garrity, in which new names are proposed for a number of taxa within the classification category phylum. This has resulted in many discussions in social media about whether it was really necessary to make these changes, which have created confusion among microbiologists and other professionals who come into contact with bacteriology.

Published 2022-09-28. Read more...

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