1. National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
2. College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
3. National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan 430070, China
4. Department of Plant Pathology, University of California, Davis, CA 95616