Analyses of molecular mechanisms that mediate osmotic stress perception

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K18563
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Plant molecular biology/Plant physiology
• Research Institution: Institute of Physical and Chemical Research
• Principal Investigator: Takahashi Fuminori 国立研究開発法人理化学研究所, 環境資源科学研究センター, 研究員 (00462698)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 環境応答 / 植物ホルモン

Outline of Final Research Achievements

Osmotic stress responses are important mechanisms of early stress perception for adapting abiotic stress conditions including drought stress. One of the protein kinases, SnRK2, is a key phosphorylation enzyme, and activated by osmotic stress conditions. This activation leads to the accumulation of one of the important phytohormone, abscisic acid (ABA), and the acquisition of stress resistance in planta. However, there remain unclear the perception mechanism of osmotic stress conditions. In this study, we focused on one of the small peptides mediating the activation of SnRK2 protein kinase. We analyzed the perception mechanisms of early osmotic stress conditions. Especially we elucidated the peptide signaling mediating cell-to-cell communications in response to early osmotic stress responses.

Free Research Field

植物の環境ストレス応答機構の解明