Veterinary bacteriology: information about important bacteria
|Categories:||Spore forming; motile|
|Etymology:||Genus name: a small spindle. |
Species epithet: named after the American bacteriologist F.G. Novy.
|Type Strain:||ATCC 17861 = NCTC 13029.|
||Form medium sized colonies (1-5 mm in diameter), which can easily spread as a contiuous film over the entire plate (the bacteria "swarm").|
|Micromorphology:||Large rods, which usually are motile. Produce oval spores, which are terminal or subterminal and may cause the cell to swell.|
|Gram +/Gram -:||G+|
|Other Enzymes:||Esculinase -, lecithinase (+), tryptophanase (+).|
|Fermentation of carbohydrates:||
Other carbohydrates: Xylose -.
|Disease:||Infectious necrotic hepatitis (black disease)
|Virulence Factors:||Necrotizing α-toxin, β-toxin (lechitinase), γ-toxin (phopholipase C), δ-toxin (oxygen-labile hemolysin), ε-toxin (lipase), ζ-toxin (hemolysin), η toxin (tropomyosinase) and θ-toxin (lipase).|
|16S rRNA Seq.:|
||About 180 differens species have been descibed within genus Clostridium. C. novyi is very closely related (phylogenetically) to C. botulinum group III and C. haemolyticum.|
|Comment:||Two types of C. novyi, A and B, have been defined. Both type A and B produce α-toxin, but type A also produces γ-and ε-toxin. Some strains of type A also produces δ-toxin. Type B strains produce β-, ζ- and η-toxin. Some type B strains also produce θ-toxin.|