Potato virus M

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Potato virus M (PVM)

The virus is found in many potato growing regions around the world and occurs as single or mixed infections together with Potato virus S. Apart from potatoes, other solanaceous plants can become infected. The symptoms include mottling, mosaic, crinkles, deformations of the leaflets and stunting of the shoots. The incidence of infections in a potato field may be high and yield losses can reach 15-20%.

Like in other carlaviruses, the particles are long and flexuous and contain a single-stranded, positive-sense RNA genome of about 8.5 kb with 6 open reading frames.

Vernacular names
• English: Potato virus M
• Français: virus M de la pomme de terre