1. Department of Plant Pathology and Ecology The Connecticut Agricultural Experiment Station New Haven CT 06511 USA
2. Department of Bioagricultural Sciences and Pest Management and Program in Plant Molecular Biology Colorado State University Fort Collins CO 80523‐1177 USA
3. Department of Molecular, Cellular and Developmental Biology Yale University New Haven CT 06520 USA
4. Department of Plant Pathology and Microbiology Iowa State University Ames IA 50011 USA
5. Université des Sciences Techniques et Technologiques Faculté des Sciences et Techniques LBMA Bamako Mali
6. IRD Cirad Univ. Montpellier Interactions Plantes Microorganismes Environnement (IPME) Montpellier 34394 France
7. Plant Pathology and Plant Microbe Biology Section School of Integrative Plant Science Cornell University Ithaca NY 14853 USA