1. Department of Primary Industries and Regional Development, Perth, WA 6000, Australia
2. University of Southern Queensland, Centre for Crop Health, Toowoomba, Qld 4350, Australia
3. Departmento de Fitopatologia, Universidade Federal de Viçosa, Brazil
4. Horticultural Crops Disease and Pest Management Research Unit, U.S. Department of Agriculture-Agricultural Research Service, Corvallis, OR 97330, U.S.A.