Transcription factor OsSPL10 interacts with OsJAmyb to regulate blast resistance in rice
Zaofa Zhong,
Lijing Zhong,
Xiang Zhu,
Yimin Jiang,
Yihong Zheng,
Tao Lan,
Haitao Cui
Affiliations
Zaofa Zhong
College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
Lijing Zhong
College of Plant Protection, Shandong Agricultural University, Tai’an 271018, Shandong, China
Xiang Zhu
College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
Yimin Jiang
College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
Yihong Zheng
College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
Tao Lan
Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China; Fujian Provincial Key Laboratory of Crop Breeding by Design, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China; Corresponding authors.
Haitao Cui
Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China; College of Plant Protection, Shandong Agricultural University, Tai’an 271018, Shandong, China; Corresponding authors.
Transcription factors (TFs) play essential roles in transcriptional reprogramming during activation of plant immune responses to pathogens. OsSPL10 (SQUAMOSA promoter binding protein-like10) is an important TF regulating trichome development and salt tolerance in rice. Here we report that knockout of OsSPL10 reduces whereas its overexpression enhances rice resistance to blast disease. OsSPL10 positively regulates chitin-induced immune responses including reactive oxygen species (ROS) burst and callose deposition. We show that OsSPL10 physically associates with OsJAmyb, an important TF involved in jasmonic acid (JA) signaling, and positively regulates its protein stability. We then prove that OsJAmyb positively regulates resistance to blast. Our results reveal a molecular module consisting of OsSPL10 and OsJAmyb that positively regulates blast resistance.
