1. Department of Plant Pathology, University of Wisconsin—Madison, Madison, Wisconsin, USA
2. Department of Medical Microbiology and Immunology, University of Wisconsin—Madison, Madison, Wisconsin, USA
3. Boyce Thompson Institute and Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York, USA
4. Institute for Biology and Biotechnology of Plants, Westfälische Wilhelms-Universität Münster, Münster, Germany
5. Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois, USA
6. Department of Bacteriology, University of Wisconsin—Madison, Madison, Wisconsin, USA