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Species/Subspecies: Paeniclostridium sordellii
Etymology: Genus name: almost a Clostridium spp.
Species epithet: named after the Argentinian bacteriologist professor Sordelli.
Significance:  [Of minor importance]   
Old Species Name(s):Clostridium sordellii
Type Strain: ATCC 9714 = CCUG 9284.
Macromorphology (smell):
Paeniclostridium sordellii 
Form small colonies (1-4 mm in diameter), which may spread on th plate to a continuous film (the bacteria "swarm").
Micromorphology: Large motile rods (0.5-1.7 x 1.6-20.6 µm) with peritrichous flagella. Produce oval, central or subterminal spores. Most strains are β-hemolytic on rabbit blood agar.
Gram +/Gram -:G+
Metabolism: Anaerobic
Other Enzymes: Esculinase (-), lecithinase +, tryptophanase +.
Fermentation of carbohydrates:
Other carbohydrates: Fructose v, galactose -, mannose v, ribose v, xylose -.
Spec. Char.:
Hosts: Cattle, sheep, horse
Disease (Swedish):Gasgangrän
Disease (English):Myositis
Clinical Picture:
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AB075771 ATCC 9714T 1 461  

 Paeniclostridium sordellii
Only two differens species have been descibed within the genus Paeniclostridium. P. sordellii is closely related toP. ghonii, for which the genus affiliation alse has been changed. Paeniclostridium is, as the namy implies, closely related to the genus Clostridium.
Please note that the name of the bacterium in the tree (Fig. 31:2) is still Clostridium sordellii.
Reference(s): No. 33, 132
Link: Clostridia.net

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Swedish University of Agricultural Sciences