1. Department of Entomology and Plant Pathology; Auburn University; Auburn AL USA
2. Molecular Plant Pathology Laboratory; USDA-Agricultural Research Service; Beltsville MD USA
3. Laboratorio de Genética e Interacciones Planta Microorganismos, Facultad de Ciencias Agrícolas; Universidad Veracruzana; Xalapa Veracruz Mexico