1. Laboratorio de Patología Vegetal, IIAF, Universidad Michoacana de San Nicolás de Hidalgo, Km. 9.5 Carr. Morelia-Zinapécuaro, Michoacán 58880, Mexico
2. Mycotoxin Prevention and Applied Microbiology Research Unit, Agricultural Research Service, United States Department of Agriculture, Peoria, Illinois 61604-3999