1. All-Russian Institute for Plant Protection; Laboratory of Plant Immunity to Diseases; 3, Podbelsky shosse St. Petersburg-Pushkin 196608 Russia
2. N.I. Vavilov Institute of Plant Industry (VIR); Department of Biotechnology; Bolshaya Morskaya Street, 42-44 190000 St. Petersburg Russia
3. USDA Agricultural Research Service; Department of Horticulture; University of Wisconsin; Madison WI 53706-1590 USA
4. St. Petersburg State University; Universitetskaya nab. 7/9 199034 St. Petersburg Russia