1. The Biology Centre of the CAS, v. v. i., Institute of Plant Molecular Biology, České Budeˇjovice, 370 05, Czech Republic
2. National Institute of Agrarian and Veterinary Research (INIAV), Lisbon, Portugal
3. Institute of Hygiene and Tropical Medicine, Lisbon, Portugal
4. Alma Mater Studiorum, University of Bologna, DipSA, Plant Pathology, Bologna, Italy