1. Laboratoire d'Amélioration et Protection des Ressources Génétiques de l'Olivier Institut de l'Olivier BP 208 Tunis Tunisia
2. Laboratory of Bioaggressors and Integrated Protection in Agriculture The National Agronomic Institute of TunisiaUniversity of Carthage Tunis Tunisia
3. Research Institute of Horticulture Skierniewice Poland
4. C.R.E.A. – Council for the Research in Agriculture and the Analysis of the Agrarian Economy Research Centre for Olive, Fruit Trees and Citrus Roma Italy
5. Department of Plant Pathology University of Georgia Griffin GA USA
6. Department of Laboratory Methods and Diagnostics Dutch General Inspection Service (NAK) Emmeloord Netherlands
7. Flanders Research Institute for Agriculture, Fisheries and Food Plant Sciences Unit Burg Merelbeke Belgium