1. Department of Plant Pathology and Weed Science, Agricultural Research Organization, Volcani Center, POB 6, Bet-Dagan, 502500, Israel;
2. The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel;
3. Department of Plant Pathology and the Genome Center, University of California, Davis, CA 95616, U.S.A.;
4. Joint BioEnergy Institute and Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, U.S.A.; and
5. University Tübingen, 72076 Tübingen, Germany