1. State Key Laboratory of Silkworm Genome Biology Southwest University Chongqing 400716 China
2. Biological Science Research Center Southwest University Chongqing 400716 China
3. Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials Southwest University Chongqing 400716 China
4. College of Biological Science and Engineering Shaanxi University of Technology Hanzhong Shaanxi Province 723001 China