Prunus necrotic ringspot virus

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cherry leaves with symptoms of necrotic ringspots caused by Prunus necrotic ringspot virus, right mixed infection with Prune dwarf virus (click on image to enlarge it)
Author(s): Rodrigo Pérez-Sánchez, María Remedios Morales-Corts and María Ángeles Gómez-Sánchez
Source: Phytopathologia Mediterranea, 2017, vol. 56 p.67

Prunus necrotic ringspot virus (PNRSV)

The virus occurs world-wide in temperate regions and causes a serious disease of Prunus species and other woody crops (e.g. rose). It is transmitted through pollen and seeds. Mechanical inoculation is also possible, but the particles are rather unstable.

The symptoms vary according to host plant and virus strain. They range from mild mosaic to necrotic ringspot to stunting and death of buds and roots. The particles are isometric with a diameter of around 23 nm.