About the Authors

Miao Li

Affiliation Department of Life Science and Chemistry, Dali University, Dali, China

Jianmeng Feng

fjm@pku.org.cn

Affiliation Department of Life Science and Chemistry, Dali University, Dali, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JF. Performed the experiments: ML. Analyzed the data: ML. Wrote the paper: JF ML.