Acknowledgements
We are indebted to Chuanzao Mao (Zhejiang University) for providingOsPHR2-Ov1, phr2 , and pET29b-OsPHR2 vector. This work was funded by National Natural Science Foundation of China (31670291, 31800249), Zhejiang Provincial Natural Science Foundation of China (LQ18C140004), State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products (2010DS700124-ZZ2017).