FIG. 3.

Phylogenetic analyses of the endosymbiotic bacteria of the Pseudotrichonympha protists based on the partial amino acid sequences of GyrB (A), EF-Tu (B), and GroEL (C), using 226, 222, and 185 unambiguously aligned positions, respectively. The trees were inferred by the ML method. The numbers at the nodes indicate ML bootstrap values. Scale bar = 0.1 nucleotide substitution per position. The sequences obtained from P. grassii in C. formosanus are indicated by the prefix CfPt, and the sequences obtained from Pseudotrichonympha sp. in T. planus are indicated by the prefix TpPt. The database accession numbers are indicated after the names of taxa.