Phylogenetic tree of prasinoviruses with environmental sequences from the partial DNA polymerase gene (for a final length of 195 amino acids [aa]) reconstructed by Bayesian inference (BI) and maximum likelihood (ML). Numbers are posterior probabilities (BI) and bootstrap proportions (ML) reflecting clade support (ML; values below 50 are indicated by dashes). Geographic origins of sequences are given on the right. GenBank accession numbers are as follows: MiV130, FJ267495; MiV93, FJ267493; OtV63, FJ267501; OtV64, FJ267502; BpV132, FJ267517; and OtV5, EU304328.