1. Department of Plant Pathology and Microbiology Iowa State University Ames IA 50011 USA
2. Genome Informatics Facility Iowa State University Ames IA 50011 USA
3. Division of Plant Sciences College of Life Sciences University of Dundee Dundee DD1 5EH UK
4. Department of Genetics, Development and Cell Biology Iowa State University Ames IA 50011 USA
5. Division of Plant Sciences and Bond Life Sciences Center University of Missouri Columbia MO 65211 USA
6. Department of Plant Sciences University of Tennessee Knoxville TN 37996 USA