RT Journal Article SR Electronic(1) A1 Sasaki, Y A1 Takikawa, N A1 Kojima, A A1 Norimatsu, M A1 Suzuki, S A1 Tamura, YYR 2001 T1 Phylogenetic positions of Clostridium novyi and Clostridium haemolyticum based on 16S rDNA sequences. JF International Journal of Systematic and Evolutionary Microbiology, VO 51 IS 3 SP 901 OP 904 DO https://doi.org/10.1099/00207713-51-3-901 PB Microbiology Society, SN 1466-5034, AB 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%) from that of C. novyi type C, they were 98.7% homologous to that of C. novyi type A (relative positions 28-1520 of the Escherichia coli 16S rDNA sequence) and they exhibited a higher similarity to the 16S rDNA sequence of C. botulinum types D and C than to that of C. novyi type A. These results suggest that C. novyi types B and C and C. haemolyticum may be one independent species generated from the same phylogenetic origin., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/00207713-51-3-901