Signal integration mechanism mediated by novel types of calcium channels in stomatal guard cells

2023 Fiscal Year Final Research Report

• Project/Area Number: 18KK0425
• Research Category: Fund for the Promotion of Joint International Research (Fostering Joint International Research (A))
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 38060:Applied molecular and cellular biology-related
• Research Institution: Okayama University
• Principal Investigator: Munemasa Shintaro 岡山大学, 環境生命自然科学学域, 准教授 (20641442)
• Project Period (FY): 2019 – 2023
• Keywords: 気孔 / 孔辺細胞 / カルシウム / イオンチャネル / アブシシン酸

Outline of Final Research Achievements

Cytosolic calcium ions function as an important second messenger in guard cell signaling that regulates stomatal movement. However, the molecular mechanism that regulate cytosolic calcium ion concentrations in guard cells and the downstream mechanism responsible for calcium sensing are not yet fully understood. In this study, we analyzed the functions of novel candidate factors for calcium ion transporters involved in the regulation of stomatal movement, providing important insights into the regulatory mechanisms of plant stress tolerances.

Free Research Field

植物生理学

Academic Significance and Societal Importance of the Research Achievements

本研究は、カルシウムイオンに依存して気孔開閉運動を制御するシグナル伝達機構の一端を明らかにした。本研究の成果は、農作物のストレス耐性改善技術の開発に貢献できる可能性を秘めている。