1. Intercollege Graduate Program in Plant Biology, Huck Institutes of the Life Sciences, The Pennsylvania State University
2. Department of Biology, The Pennsylvania State University
3. Institute of Molecular Evolutionary Genetics, Huck Institutes of the Life Sciences, The Pennsylvania State University
4. Department of Plant Pathology, Physiology and Weed Science, Virginia Polytechnic Institute and State University
5. Department of Biology, University of Virginia
6. Department of Plant Sciences, University of California, Davis
7. Department of Statistics and Huck Institutes of the Life Sciences, The Pennsylvania State University