Figure 7 Neighbor-joining tree depicting the distance relationship of SPLCV-US AV2 protein with those of other geminiviruses. The tree was constructed from the multiple alignment of derived amino acid sequences using programs in Clustal W package version 1.7. Bootstrap percentage are shown with the 50% majority rule along the internal branches. Vertical branch lengths are arbitrary. Horizontal branch lengths are scaled to the underlying number of amino acid substitutions per site. Beet curly top virus (BCTV) was used as an outgroup. The four-digit number listed after each abbreviated name is its Genbank accession no. The full names and accession numbers are listed in Table 1.
Lotakul and Valverde.