1. Department of Biology and Ecology & Institute of Environmental Technologies; Faculty of Science; University of Ostrava; Ostrava Czech Republic
2. INRA; UM 1349 IGEPP Le Rheu France
3. Laboratoire de Biologie et Pathologie Végétales; EA 1157, SFR 4207 QUASAV; Université de Nantes; Nantes Cedex France