1. Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, H-1525 Budapest, Hungary
2. Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, H-1117 Budapest, Hungary
3. Austrian Institute of Technology, BOKU University of Natural Resources and Life Sciences, A-3430 Tulln, Austria
4. Institute for Life Sciences and the Environment, Centre for Crop Health, University of Southern Queensland, Toowoomba, Queensland 4350, Australia