Fig. 3.

A maximum likelihood (ML) phylogenetic tree showing the relationship among Potato virus Y isolates. The tree was constructed from the full-length sequences of 58 PVY isolates, including recombinant isolates. Numbers at each node indicate the percentage of supporting puzzling steps (or bootstrap samples) in ML method. The name of each isolate, its country of origin, strain relationship, and GenBank accession number are listed. We used Pepper mottle virus (PeMoV) (accession no. NC_001517) as an outgrop.