1. College of Life Sciences, Northwest Sci.‐Tech. University of Agriculture and Forestry, Yangling 712100, Shaanxi, P. R. China
2. R&D Centre of Biorational Pesticides, Northwest Sci.‐Tech. University of Agriculture and Forestry, Yangling 712100, Shaanxi, P. R. China
3. Key Laboratory of Marine Drugs, Ministry of Education, China; Marine Drug and Food Institute, Ocean University of China, Qingdao 266003, P. R. China
4. Shaanxi Microbiology Institute, Xi'an 710043, Shaanxi, P. R. China