1. Key Laboratory of Biology and Genetic Resources of Tropical Crops, Ministry of Agriculture, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, People's Republic of China;
2. Hainan Key Laboratory for Research and Development of Natural Products from Li Folk Medicine, Haikou, People's Republic of China;
3. Hainan Engineering Research Center of Agarwood, Haikou, People's Republic of China