Phylogenetic relationship of phototrophic heliobacteria and systematic reconsideration of species and genus assignments based on genome sequences of eight species.

The draft genome sequences of five species of named phototrophic heliobacteria in the order were determined. Whole genome phylogenetic and average nucleotide identity comparison for the heliobacteria suggests that and are closely related to one another and belong to the same genus. The three species , and all belong in the same genus, but are more divergent from and belong in a separate genus, which we suggest to be called is properly recognized to be in the same genus as is clearly unlike any other and rightfully belongs in a separate genus.