1. Department of Plant Pathology and Microbiology, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
2. Institute of Plant Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay, Israel
3. Department of Plant Pathology and Weed Research, Agricultural Research Organization, Gilat Research Center, M. P. Negev 2, Israel