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This study identified a functional spo0A ORF in enterotoxigenic Clostridium perfringens type A. To evaluate the function of spo0A, an isogenic spo0A knock-out mutant was constructed. The spo0A mutant was unable to form endospores and produce enterotoxin, however, these defects could be restored by complementing the mutant with a recombinant plasmid carrying the wild-type spo0A gene. These results provide evidence that spo0A expression is essential for sporulation and enterotoxin production in C. perfringens.

fems microbiology letters

Disruption of the gene (spo0A) encoding sporulation transcription factor blocks endospore formation and enterotoxin production in enterotoxigenic Clostridium perfringens type A