Identification of a novel jasmonate-induced signaling pathway in rice defense respopnse

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K07313
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plant protection science
• Research Institution: Kagawa University
• Principal Investigator: gomi kenji 香川大学, 農学部, 准教授 (50511549)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 感染生理 / 植物病理 / 植物病害抵抗性

Outline of Final Research Achievements

Rice is one of the most important staple food crop. It has been estimated to be as the main source of nutrition for 50% (about 3.5 billion people) of the world population. Diseases caused by phytopathogens have always had a huge damage on rice production. In this study, we revealed the importance of jasmonate (JA), a plant hormone, in rice defense response. We further identified two key regulators, JMTF1 and OsSRO1a, which have important role in rice JA siganling. It has been revealed that JMTF1 works as a positive regulator and OsSRO1a works as a negetive regulator in rice JA-mediated defense response, respectively. Furthermore, JMTF1 also works as a negative regulator against auxin siganling, which affects negatively to rice defense. Taken togather, we revealed a novel JA siganaling pathways regulated by JMTF1 and OsSRO1a in rice. These findings provide further insight into the mechanism of JA-induced defense response in rice.

Free Research Field

植物病理学