Novel signal molecule that regulates both metabolism and stress response in plants

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K19087
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 38:Agricultural chemistry and related fields
• Research Institution: Okayama University
• Principal Investigator: Murata Yoshiyuki 岡山大学, 環境生命自然科学学域, 教授 (70263621)
• Co-Investigator(Kenkyū-buntansha): 宗正 晋太郎 岡山大学, 環境生命科学学域, 准教授 (20641442)
• Project Period (FY): 2021-07-09 – 2024-03-31
• Keywords: 気孔 / 孔辺細胞 / リンゴ酸 / イオンチャネル

Outline of Final Research Achievements

Stomatal movement is critical for plants and is regulated by malate as well as by plant hormones. We investigated the regulation by malate of SLAC1, whose activation is essential for stomatal closure.
This study demonstrated that malate activate SLAC1 directly and indirectly (through signal transduction in guard cells), leading to stomatal closure. Moreover, we identified the regulatory domain in SLAC1.

Free Research Field

植物生理学

Academic Significance and Societal Importance of the Research Achievements

リンゴ酸による植物の成長制御に関する知見を得ることができた。よって、作物のストレス耐性やストレス応答の化学的制御を可能にし、農業分野への応用が期待できる。