1. College of Forestry, Northwest A&F University, Taicheng Road, Yangling, Shaanxi, China 712100
2. Mycotoxin Prevention and Applied Microbiology Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, US Department of Agriculture, Peoria, Illinois 60604-3999
3. Genetic Resources Center (MAFF), National Agriculture and Food Research Organization, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan
4. School of Forest Resources and Conservation, University of Florida, Gainesville, Florida 32611-0680
5. Division of Plant and Soil Sciences, West Virginia University, Morgantown, West Virginia 26506-6108