1887

Abstract

The 16S rRNA sequences of seven representative strains, eight representative strains, and the type strains of and were determined. These strains included the type strains of , and A phylogenetic analysis showed that the 15 strains of and species formed a compact phylogenetic cluster clearly separated from the other members of the alpha subclass of the However, species and species are phylogenetically entwined with one another, and the two genera cannot be separated. In the species, the strains of biovar 1, biovar 2, , and were clearly separated. The two biovars exhibited homogeneity in their phenotypic, chemotaxonomic, and phylogenetic characteristics, and two species should be established for the two biovars. We considered the nomenclature of the two biovars, and revised descriptions of (for the biovar 1 strains) and (for the biovar 2 strains) are proposed. The name is rejected because the type strain of this species was assigned to , and consequently the description of the genus is revised.

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1993-10-01
2022-10-04
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