Funding for this research was provided by:
National Natural Science Foundation of China (31560091)
Education Department of Guizhou Province (KY(2013)186)
Science Department of Guizhou Province ([(2015)6013])
Received: 28 December 2019
Accepted: 24 May 2020
First Online: 3 June 2020
Ethics approval and consent to participate
: Plant samples used in the study were not collected from national park or natural reserve. According to national and local legislation, no specific permission was required for collecting these plants. We confirm that this complies with national guidelines and no formal ethics approval was required in this particular case.
: Not applicable.
: The authors declare that they have no competing interests.