1. Laboratorio de Patología Vegetal, Departamento de Producción Agraria, Escuela Técnica Superior de Ingenieros Agrónomos, Universidad Pública de Navarra, 31006 Pamplona, Spain
2. Department of Agricultural Sciences, Imperial College, Wye Campus, Ashford, Kent TN25 5AH, United Kingdom
3. Department of Environmental and Natural Resources Management, University of Ioannina, 2 Seferi St., 30100 Agrinio, Greece
4. Centre for Research in Plant Science, University of the West of England, Coldharbour Lane, Frenchay, Bristol BS16 1QY, United Kingdom