Comparison of complete sequences of potato rough dwarf virus and potato virus P and their relationships to other carlaviruses

Abstract

Potato rough dwarf virus (PRDV) was originally described in Argentina [2] while potato virus P (PVP) was first reported from Brazil [4]. These viruses were essentially indistinguishable in test plant reactions when inoculated onto 21 different solanaceous species [7]. Of the 10 solanaceous species susceptible to both PRDV and PVP, the majority did not display symptoms. Only Nicotiana megalosiphon and N. occidentalis showed systemic symptoms consisting of leaf deformations, leaf rugosity and/or interveinal chlorosis. Six of the 7 potato varieties tested were susceptible to both PRDV and PVP, but visible symptoms consisting of plant stunting and the aforementioned leaf symptoms were only evident in second-generation plants of the potato cvs. Primicia and Sierra Volcán infected by PRDV [7].