1st and eleventh authors Integrated and Urban Plant Pathology Laboratory TERRA Gembloux Agro Bio Tech University of Liège Passage des Déportés 2 5030 Gembloux Belgium

Crop Research Institute Drnovska 507 Praha 6 Ruzyne 161 06 Czech Republic

Crop Research Institute Ruzyně Czech Republic

Crop Research Prague Ruzyně Czech Republic

Division of Crop Protection and Plant Health Crop Research Institute Drnovská 507 16106 Prague 6 Ruzyně Czech Republic

eighth author Crop Protection Division International Potato Center Aveninda La Molina 1895 La Molina Lima Peru

fifteenth and eighteenth authors Center of Plant Protection and Biotechnology Instituto Valenciano de Investigaciones Agrarias Ctra Moncada Náquera km 4 5 46113 Moncada Valencia Spain

fourteenth author Life Sciences Department Walloon Agricultural Research Center Rue de Liroux 4 Gembloux Belgium

fourth author Fera Science Ltd National Agri Food Innovation Campus Sand Hutton York YO41 1LZ United Kingdom

ineteenth author Department of Cell Biology and Genetics Faculty of Science Palacky University in Olomouc Slechtitelu 27 783 71 Olomouc Czech Republic

inth author Department of Biotechnology and Systems Biology National Institute of Biology Večna pot 111 1000 Ljubljana Slovenia

second author Institute for Plant Sustainable Protection National Research Center Via Amendola 165 A 70126 Bari Italy

seventeenth author Virology Phytoplasmology Laboratory Agroscope 1260 Nyon Switzerland

seventh author Crop Research Institute Drnovska 507 161 06 Prague Czech Republic

sixteenth and twenty second authors University of Basel Department of Environmental Sciences Botany 4056 Basel Switzerland

sixteenth author Institut national de la recherche agronomique 34398 Montpellier France

sixth author Biology Centre CAS Branisovska 31 370 05 Ceske Budejovice Czech Republic

tenth and twelfth authors Laboratory of Plant Pathology Faculty of Agriculture Forestry and Natural Environment School of Agriculture Aristotle University of Thessaloniki 54124 Thessaloniki Greece

third and fifth authors Plant Sciences Unit Flanders Research Institute for Agriculture Fisheries and Food Burg Van Gansberghelaan 96 9820 Merelbeke Belgium

thirteenth author Agricultural Research Council Infruitec Nietvoorbij Institute for Deciduous Fruit Vines and Wine Nietvoorbij Farm R44 7600 Stellenbosch South Africa

twentieth author Department of Medical Parasitology and Infection Biology Swiss Tropical and Public Health Institute University of Basel Socinstrasse 57 4051 Basel Switzerland

twenty eighth author UMR 1332 BFP INRA Université de Bordeaux CS20032 33882 Villenave d'Ornon Cedex France

twenty fifth author Pathologie Végétale INRA F 84140 Montfavet France

twenty first author Department of Plant Pathology and Weed Research Agricultural Research Organization The Volcani Center 50250 Bet Dagan Israel

twenty fourth author Diagnostic Group Department of Genomics Agricultural Biotechnology and Research Institute National Agricultural Research and Innovation Center Szent Gyorgyi A street 4 H 2100 Gödöllő Hungary

twenty seventh author Applied Statistics Computer Science and Mathematics Gembloux Agro Bio Tech University of Liège Passage des Déportés 2 5030 Gembloux Belgium

twenty sixth author Dutch National Plant Protection Organization P O Box 9102 6700 HC Wageningen The Netherlands

twenty third author Natural Resources Institute Finland Latokartanonkaari 9 00790 Helsinki Finland