ACKNOWLEDGMENTS
We thank Dr. Jingquan Yu (Zhejiang University, Hangzhou, China) for
providing excellent technical help with the measurement of endogenous
phytohormones. The research was funded by the National Key Research and
Development Program of China (2017YFE0114500), the National Natural
Science Foundation of China (31772316 and 31471878), and Natural Science
Foundation of Zhejiang Province, China (LZ17C150002).