Assoc.Prof. Baozhong Meng, University of Guelph, College of Biological Science, Guelph N1G 2W1, CanadaProf. Giovanni P. Martelli, Universita Degli Studi Di Bari, Dipt. Protezione Delle Piante Dalle, 70121 Bari, ItalyProf. Deborah A. Golino, University of California, Foundation Plant Services, Davis, CA 95616-8751, USAAssoc.Prof. Marc Fuchs, Department of Plant Pathology, and Plant-Microbe Interactions, Cornell University, Ithaca,NY 14853-5905, USA