Abstract
Partial polymerase (L) gene sequences of 919 nts, including the conserved segments pre-motif Aand motif Aof block III, of 20 Eggplant mottled dwarf virus (EMDV) isolates were generated, and trimmed sequences of 889 nts, based on the length of available sequences of other isolates, were used to determine phylogenetic relationships. Phylogenetic reconstructions revealed two divergent lineages, designated as genetic group A(Italian isolates) and group B, with the latter further divided into subgroups BI (Greek isolates) and BII (Spanish isolates). No evidence of recombination signals among sequences was detected, whereas analysis of the nonsynonymous/synonymous ratio indicated strong purifying selection, with codons under negative selection uniformly distributed along the sequences. An RT-PCR-RFLP method able to discriminate EMDV isolates of the two main genetic groups was proposed.
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