1. Key Laboratory of Biology and Genetic Improvement of Horticultural Crops-South China/Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University , 483 Wushan Road, Guangzhou 510642 , China
2. Department of Life Sciences and Technology, Yangtze Normal University , 16, Juxian Street, Fuling 408100 , China