FIG. 2.

Neighbor-joining tree based on 16S rRNA gene sequences of the halogenase gene-positive reference strains, showing their taxonomic relationships. GenBank accession numbers are given in parentheses. Taxonomically closely related strains sharing highly homologous halogenases are marked with vertical lines to the right of the strain names. Percentage bootstrap values based on 1,000 resampled datasets are shown at the nodes; only values above 50% are given. The scale bar indicates the nucleotide substitution rate.