Phylogenetic distance tree constructed by the neighbour-joining method, comparing the 16S rDNA sequences of
RYD phytoplasma with those of other representative phytoplasmas from GenBank. Acholeplasma laidlawii was used as the
outgroup. Accession numbers are shown in parentheses; those determined in this study are in bold. Numbers on branches are
confidence percentages obtained from 100 bootstrap replicates (only values above 80 % are shown). The corresponding
phylogenetic group and subgroup names reported previously (Jung et al., 2003) are shown on the right. Bar, phylogenetic
distance of 1 %. Phytoplasma abbreviations are given in Table 1; Cand., Candidatus.