1. Max-Planck-Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany, Technical University of Dortmund, Faculty of Chemistry, Otto-Hahn-Strasse 6, 44221 Dortmund, Germany, University of Leipzig, Institute of Organic Chemistry, Johannisallee 29, 04103 Leipzig, Germany, Graz University of Technology, Institute of Organic Chemistry, Stremayrgasse 16, 8010 Graz, Austria, Washington State University, Pullman, Washington 99164-6430, and USDA, Agricultural Research Service, Root Disease...