Phylogenetic Positions of Clostridium chauvoei and Clostridium septicum Based on 16S rRNA Gene Sequences

Phylogenetic positions of Clostridium novyi and Clostridium haemolyticum based on 16S rDNA sequences.

The partial sequences (1465 bp) of the 16S rDNA of Clostridium novyi types A, B and C and Clostridium haemolyticum were determined. C. novyi types A, B and C and C. haemolyticum clustered with Clostridium botulinum types C and D. Moreover, the 16S rDNA sequences of C. novyi type B strains and C. haemolyticum strains were completely identical; they differed by 1 bp (level of similarity > 99.9%) ...

Complexity of toxins from Clostridium septicum and Clostridium chauvoei.

Production of toxins by Clostridium septicum and Clostridium chauvoei has been the subject of many conflicting reports. Roux and Chamberland (1887) first noted that 3 to 4 day filtrates were antigenic; conferring on guinea pigs an immunity against infection with viable organisms. Production of a lethal toxin by C. septicum was however, demonstrated by Leclainche (1898) and Leclainche and Morel ...

Novel real-time PCR assay for simultaneous detection and differentiation of Clostridium chauvoei and Clostridium septicum in clostridial myonecrosis.

A real-time PCR assay based on the 16S rRNA gene sequence was designed for differentiation of blackleg-causing Clostridium chauvoei and Clostridium septicum, a phylogenetically closely related bacterium responsible for malignant edema. In order to exclude false-negative results, an internal amplification control was included in the assay. A set of three probes, one specific for C. chauvoei, one...

Immunizalion of Cattle with Clostridium chauvoei Vaccine

Isolation and identification of Clostridium septicum from sheep-dung

  To study the existence of Clostridium septicum as probable agent associated with currently occurrence of black quarter in Urmia area, sheep-dung samples were collected. The bacteriological examinations on suspicious gram positive anaerobic spore-bearing bacilli which are in Clostridia genus include isolation and biochemical identification were performed. The results showed 28 different types ...