1. Luzhou Branch of Sichuan Tobacco Co., Ltd., Luzhou 646000, P.R. China
2. Key Lab of Biofabrication of Anhui Higher Education Institution Centre for Advanced Biofabrication, Hefei University, Hefei 230601, P.R. China
3. Institute of Tobacoo Research, Anhui Academy of Agricultural Sciences, Hefei 230001, P.R. China