About the Authors

Yong Yang

Affiliation State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, P. R. China

Qi Wang

happyking@ibcas.ac.cn

Affiliation State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, P. R. China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YY QW. Performed the experiments: YY QW. Analyzed the data: YY QW. Contributed reagents/materials/analysis tools: YY QW. Wrote the paper: YY QW.