Molecular mechanisms underlying phase transition of cell proliferation during root growth

2014 Fiscal Year Final Research Report

• Project Area: Integrated analysis of strategies for plant survival and growth in response to global environmental changes
• Project/Area Number: 22119009
• 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: Nara Institute of Science and Technology
• Principal Investigator: UMEDA MASAAKI 奈良先端科学技術大学院大学, バイオサイエンス研究科, 教授 (80221810)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: 細胞分裂 / 細胞伸長 / 細胞周期 / 根 / 植物ホルモン / DNA損傷 / 転写因子 / イメージング

Outline of Final Research Achievements

Root growth is affected by various underground conditions. The growth rate is determined by cell division in the root apex and transition from cell division to cell elongation. In this project, we studied underlying mechanisms to uncover the major machinery controlling root growth in response to external stimuli. We found that cytokinin, one of the phytohormones, promotes transition from cell division to cell elongation, and that MYB3R transcription factor plays an important role in arresting cell division under DNA stress conditions.

Free Research Field

植物分子生物学