Yuming Lu1, Jian-Kang Zhu2. 1. Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China. 2. Shanghai Center for Plant Stress Biology, Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 201602, China; Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN 47907, USA. Electronic address: jkzhu@purdue.edu.