1. Laboratory of Citrus Huanglongbing Research, Department of Plant Pathology, South China Agricultural University, Guangzhou, P. R. China
2. Crop Diseases, Pests, and Genetics Research Unit, San Joaquin Valley Agricultural Sciences Center, United States Department of Agriculture–Agricultural Research Service (USDA-ARS), Parlier, CA
3. Laboratory of Citrus Huanglongbing Research, Department of Plant Pathology, South China Agricultural University
4. Bureau of Science and Technology, Maoming, Guangdong, P. R. China
5. Crop Diseases, Pests, and Genetics Research Unit, San Joaquin Valley Agricultural Sciences Center, USDA-ARS