1. College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, P. R. China
2. Department of Plant Pathology/Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang 550025, P. R. China
3. Jiangsu Key Laboratory for Food Quality and Safety, State Key Laboratory Cultivation Base, Ministry of Science and Technology, Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, P. R. China
4. Institute of Pomology, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, P. R. China