FIG. 7.

Phylogenetic tree of 16S rRNA cDNA sequences (in boldface) and reference sequences of the type strains of the genera Phenylobacterium and Caulobacter and Brevundimonas diminuta. Accession numbers are given in brackets. The tree was calculated with MEGA 4.0 (neighbor-joining method, deletion of gaps/missing data, maximum-composite-likelihood model, 788 valid positions between positions 51 and 898 of the 16S rRNA gene of Escherichia coli). Dots at the nodes indicate confirmation of topology by neighbor joining and parsimony using the same data set. The outgroup was Hirschia baltica (X52909). The T-RF sizes of 16S rRNA cDNA sequences are included. Scale bar, 0.005% similarity. ¹²C-CuHDO, ¹²C-Cu-HDO amended; ¹³C-CuHDO, ¹³C-Cu-HDO-amended WSV mixture.