Plum pox potyvirus isolated from Prunus spinosa in Hungary
Natural infections of Prunus spinosa (blackthorn) by Plum pox potyvirus (PPV – EPPO A2 quarantine pest) had previously been reported in Yugoslavia and Czech Republic but strains had not been characterized. In Hungary, PPV was found in P. spinosa plants in different regions. One isolate was characterized (inoculation to indicator plants, DAS-ELISA, RT-PCR) and results showed that it belonged to the M type of strains. It is felt that natural infection of P. spinosa is important from an epidemiological point of view. P. spinosa is a woody perennial and an overwintering host for aphid vectors (Phorodon humuli and Brachycaudus helicrysi), therefore it could act both as a primary source and plant reservoir for PPV.
Sources
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Salamon, P.; Palkovics, L. (2002) Characterization of Plum pox virus PPV-BT-H isolated from naturally infected blackthorn (Prunus spinosa L. ) in Hungary.
European Journal of Plant Pathology, 108, 903-907.
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