Acknowledgements
We are grateful to Fangfang Shen, Wenfei Liu and Qingying Meng for their kind assistance with the field sampling. This work was funded by National Natural Science Foundation of China (Nos. 31971497, 31570444) and by “Double First-Class” funding from Yunnan University (No. C176220100003).
Author Contributions
J. Wu and Q. Zhou conceived of and designed the experiments. Q. Zhou, J. Wu, Y. Shao, D. Li, and Z. Chen analyzed the data and drew the figures. The authors jointly wrote the manuscript.