Acknowledgements
We appreciate Dr. Xiaojuan Liu from the Institute of Botany (CAS) and
Dr. Tianlong Cai from the Institute of Zoology (CAS) for their
constructive suggestions and kindly help in manuscript revision. We also
thank anonymous reviewers for their efforts and kindly suggestion. This
research was funded by a grant from the Ministry of Science and
Technology of China (2014FY210200).