1887

Abstract

The gene sequences were determined for 121 strains of Gram-negative anaerobic rods, including the genera , , , , , , , and . The mean pairwise gene sequence similarity (73.8–97.1 %) between species in each genus, except for the genus that comprises one species, was significantly less than that of the 16S rRNA gene sequence (88.3–96.3 %). Only pairwise gene sequence similarity (97.1 %) of the genus was higher than that of the 16S rRNA gene sequence (93.8 %). Each genus formed a distinct clade in the phylogenetic analysis of the gene sequence as well as the 16S rRNA gene sequence. The phylogenetic analysis indicated a higher evolutionary rate for the gene sequence than the 16S rRNA gene sequence, especially in the genera and . This study suggests that the gene is a useful alternative phylogenetic marker for the identification and classification of a broad range of Gram-negative anaerobic rods.

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2010-11-01
2024-12-04
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