1. Biotechnology Research Center, State Cultivation Base of Crop Stress Biology for Southern Mountainous Land of Southwest University, Academy of Agricultural SciencesSouthwest University Chongqing 400715 China
2. Biochemical Engineering Center of Guizhou ProvinceGuizhou University Guiyang 50025 China
3. Department of Microbiology and Cell ScienceUniversity of Florida Gainesville FL 32611 USA