1. Ministry of Education Key Laboratory for Bio-Resource and Eco-Environment, College of Life Science, Sichuan University, Chengdu 610064, China. Fax: 86 – 28 – 85 41 53 00
2. Hunan Maoyuan Forest Limited Company, Yueyang 414002, China
3. Plant Physiology Laboratory, College of Life Science, Sichuan University, Chengdu 610064, China. Fax: 86 – 28 – 85 41 25 71
4. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610064, China