Invasive Species Compendium

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Abstract

First report of prunus necrotic ringspot virus infecting apple in Turkey.

Abstract

In May 2017, a survey was conducted for plum pox virus (PPV) and prunus necrotic ringspot virus (PNRSV) of peach in the Bursa Province of Turkey. Leaves showing symptoms (mosaic, chlorosis, line patterns, ringspot and leaf curl) were collected from an apple garden near the peach growing areas. In addition to the peach leaves, 20 leaves from 20 different apple trees were also tested via ELISA and RT-PCR for PNRSV. Eight of the 20 different apple trees were found to be infected with PNRSV. Cucumis sativus was inoclulated with sap from three of the PNRSV infected samples (Elm-1, Elm-2 and Elm-3) and one control (PNRSV free) and maintained in a plant growth cabinet. After 18 days, the indicator plant developed local chlorotic spots and stunting that tested positive by using RT-PCR, while the control plant showed no symptoms. PNRSV has been reported previously in apple in India and China. This is thought to be the first report of PNRSV in apple in Turkey.