Hypersensitive response to Potato virus Y in potato cultivar Sarpo Mira is conferred by the Ny-Smira gene located on the long arm of chromosome IX.

ABSTRACT: Potato virus Y (PVY, Potyvirus) is the fifth most important plant virus worldwide in terms of economic and scientific impact. It infects members of the family Solanaceae and causes losses in potato, tomato, tobacco, pepper and petunia production. In potato and its wild relatives, two types of resistance genes against PVY have been identified. While Ry genes confer symptomless extreme resistance, Ny genes cause a hypersensitive response visible as local necrosis that may also be able to prevent the virus from spreading under certain environmental conditions. The potato cultivar Sárpo Mira originates from Hungary and is highly resistant to PVY, although the source of this resistance remains unknown. We show that cv. Sárpo Mira reacts with a hypersensitive response

SUBMITTER: Tomczynska I 

PROVIDER: S-EPMC4092237 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature