FIGURE 3.

Bayesian phylogeny based on the coding nucleotide sequence of potyviruses. Asterisks indicate nodes with posterior probabilities of ≥0.90. The tree is mid-point rooted. Branch lengths are drawn to a scale of nucleotide substitutions per site. Phylogenetic subgroups of potyviruses defined by Shukla et al. (1994) are used as reference, and indicated in colored branches. BCMV, bean common mosaic virus; SCMV, sugarcane mosaic virus; PRSV, papaya ringspot virus; PVY, potato virus Y; ChiVMV, chilli veinal mottle virus; TuMV, turnip mosaic virus; SPFMV, sweet potato feathery mottle virus. Expansion of the phylogeny section contains the group of virus sequences in which MeRV is clustered.