Hong Yang1, Tingting Li2, Ying Chen2, Mingming Xu2, Ying Li2. 1. School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China. Electronic address: yanghongyh@uestc.edu.cn. 2. School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 610054, China.