Potato tuber necrosis ringspot disease in Italy
In 1997, in Piemonte (Northern Italy), potato tubers of various cultivars showed symptoms of necrotic rings. Analysis, using test plants and ELISA tests, revealed that the virus involved was a necrotic strain of PVY. Immunocapture RT-PCR further characterized the strain as PVYNTN. The strain PVYNTN is responsible for the potato tuber necrosis ringspot disease which has recently been observed in several European countries (see also EPPO RS 97/180). In Italy, symptoms of potato tuber necrosis ringspot disease are also reported from Abruzzo, Emilia-Romagna, Lombardia and Veneto.
Sources
Roggero, P.; Dellavalle, G.; Lisa, V.; Weidemann, H.L. (1998) [Identification of PVYNTN in potato tubers with necrotic ringspot, in Piemonte, Northern Italy].
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