Elucidation of the principles underlying the periodic dynamics in the zygote to generate cell asymmetry and body axis.

2023 Fiscal Year Final Research Report

• Project Area: Intrinsic periodicity of cellular systems and its modulation as the driving force behind plant development
• Project/Area Number: 19H05676
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Biological Sciences
• Research Institution: Tohoku University
• Principal Investigator: Ueda Minako 東北大学, 生命科学研究科, 教授 (20598726)
• Project Period (FY): 2019-06-28 – 2024-03-31
• Keywords: 植物受精卵 / 細胞伸長 / ライブイメージング

Outline of Final Research Achievements

The apical-basal axis formation is the origin of ontogeny. In plants, however, the details of this process and how the periodic dynamics are regulated were largely unknown. Therefore, we performed various live imaging analyses using Arabidopsis embryos (Matsumoto et. al., 2021), and found that the growth rate of zygotes is temporally modulated before the cell division (Kang et. al., 2023). We summarized our findings and introduced them widely (Matsumoto and Ueda, 2024).

Free Research Field

植物発生学

Academic Significance and Societal Importance of the Research Achievements

研究代表者らは、植物の受精卵が上下に極性化する動態をリアルタイムで観察したことで、細胞内のダイナミックな動きや制御が、上下軸形成の起点である受精卵の不等分裂に重要であることを突き止めた。多くの植物において、受精卵は上下に不等分裂することで植物体の上下軸を確立することから、本研究で見出された動態や仕組みは、植物に共通した原理であると期待される。