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Potyviruspotato virus Y {PVY} pathotype NTN

A virus on UK and European petunias which also threatens potato


Name: Potyvirus potato virus Y {PVY} pathotype NTN
Taxonomic Position:
Virus: Potyviridae
Common Names: PVYNTN

This is the first record of PVYNTN causing disease in a host other than potato or tomato. Petunia stocks with infection levels as high as 100% have been reported. This virus has not been detected in North America.

Issues of Concern: This necrotic strain of PVY has been shown to cause necrotic tuber symptoms in potato similar to potato tuber necrotic ringspot disease (PTNRD).

Hosts: trailing petunia; 19 of 24 species of bedding and pot plant crops tested were also susceptible (Boonham et al., 1999)

Vector(s)/Dispersal: The virus is transmitted by up to 40 aphid species belonging to 20 different genera. The virus is also transmitted in sap and by the distribution of infected vegetatively propagated material.

U.K., The Netherlands, Germany

Detection Strategies
This virus is not seed born, so vegetatively propagative material represents the most likely pathway for introduction. Several commercial moniclonal antibodies are available for detection by ELISA (eg. see link below) .

Source: Canadian Plant Health Early Warning System

Boonham, N., Hims, M., Barker, I. and N. Spence. 1999. Potato virus Y from petunia can cause symptoms of potato tuber necrotic ringspot disease (PTNRD). European Journal of Plant Pathology, 105: 617-621.

Useful Links:
Canadian Plant Health Early Warning System Alert
Plant Viruses Online Description of PVY Group
Indirect ELISA test system for Potyvirus group

Warning: The information in this archived item was not confirmed with the appropriate National Plant Protection Organization and is provided solely for informational purposes. Please use this information with caution.

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