1. Institute of Plant Molecular Biology, Department of Plant Virology, Biology Centre CAS, 370 05 Ceske Budejovice, Czech Republic
2. Faculty of Agriculture, University of South Bohemia, 370 05 Ceske Budejovice, Czech Republic
3. Genomics Research Group, Institute of Plant Protection, Department of Plant Pathology, Hungarian University of Agriculture and Life Sciences, Szent-Gyorgyi Albert Street 4, 2100 Gödöllő, Hungary