How plant villin regulates chloroplast anchoring

2017 Fiscal Year Final Research Report

• Project/Area Number: 26440143
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plant molecular biology/Plant physiology
• Research Institution: Osaka University
• Principal Investigator: Takagi Shingo 大阪大学, 理学研究科, 教授 (10192626)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 葉緑体アンカー

Outline of Final Research Achievements

In photosynthesizing plant cells, chloroplasts maintain their specific intracellular distribution patterns under specific environmental conditions, which contributes to the operation of optimal photosynthesis under fluctuating environment. Since the actin cytoskeleton has been known to play some roles in the maintenance of chloroplast distribution patterns, we ascertained a possible involvement of a Ca2+-sensitive actin-binding protein villin (VLN). One of the five villin molecular species of the model plant Arabidopsis thaliana, AtVLN2 is localized on chloroplasts. AtVLN2 functions in the actin reorganization around the chloroplasts induced by a change in Ca2+ concentration, so may be involved in the regulation of chloroplast anchoring in the cortical cytoplasm of leaf palisade cells.

Free Research Field

植物細胞生物学