Fig. 4.

Phylogenetic tree based on the Rickettsia 16S rRNA gene (1179 bp). The tree was constructed using the maximum likelihood method with the Kimura 2-parameter model. The analysis was performed with bootstrap tests of 1000 replicates. DNA sequences obtained in the present study are indicated in red-highlighted-tick ID. Numbers in parentheses are GenBank accession numbers. The units of branch length are nucleotide substitutions per site. The long branches are shortened and presented as interrupted branches (see full-size image in Supplementary Fig. S1).