Hierarchical order by a relation Between self-propelled motion of individual E. coli and its macroscopic pattern

• Project/Area Number: 22740249
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Mathematical physics/Fundamental condensed matter physics
• Research Institution: Chiba University
• Principal Investigator: SAKURAI Tatsunari 千葉大学, 大学院・理学研究科, 准教授 (60353322)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2010: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 化学物理 / 数理物理 / 非線形科学

Research Abstract

The effective diffusion coefficient of E. coli was estimated by measuring the mean squaredisplacement of an individual E. coli having chemotactic and non-chemotactic receptorunder the different initial condition. As a result, the effective diffusion coefficients ofchemotactic cells in different initial concentrations of nutrient are not different, while thecoefficients of non- chemotactic cells are depended on the speed of propagation front. Theproposed numerical model including above experimental features, represented amacroscopic manner of E. coli pattern.

Research Products

• [Journal Article] Spatial Pattern Formation in a Chemotaxis-Diffusion-Growth Model (2012)
  • Author(s): K. Kuto, K. Osaki, T. Sakurai, and T. Tsujikawa
  • Journal Title: Physica Volume: D 241 Pages: 1629-1639
  • Peer Reviewed
• [Presentation] A macroscopic pattern by an individual E. coli in a growth-diffusion-chemotaxis system (2012)
  • Author(s): T. Sakurai
  • Organizer: Japanese-German Workshop "Emerging Phenomena in Spatial Patterns"
  • Place of Presentation: Magdeburg, Germany
  • Year and Date: 2012-09-25
• [Presentation] Pattern formation in a growth-diffusion-chemotaxis system (2012)
  • Author(s): T. Sakurai
  • Organizer: Active Dynamics on Microscales: Molecular Motors and Self-Propelling Particles
  • Place of Presentation: Leiden, Netherlands
  • Year and Date: 2012-09-18
• [Presentation] Pattern formation in a growth-diffusion-chemotaxis system (2012)
  • Author(s): Tatsunari Sakurai
  • Organizer: Active Dynamics on Microscales: Molecular Motors and Self-Propelling Particles
  • Place of Presentation: ローレンツセンター（オランダ・ライデン）
• [Presentation] 大腸菌パターン形成研究の現状と課題 (2011)
  • Author(s): 櫻井建成
  • Organizer: 研究集会「放物型発展方程式とその応用」
  • Place of Presentation: 大阪
  • Year and Date: 2011-09-24
• [Presentation] 大腸菌パターン形成研究の現状と課題 (2011)
  • Author(s): 櫻井建成
  • Organizer: 研究集会「放物型発展方程式とその応用」
  • Place of Presentation: 大阪大学(大阪)
  • Year and Date: 2011-09-23
• [Presentation] 非線形振動子における時間リズムの生成消滅 (2010)
  • Author(s): 櫻井建成
  • Organizer: 日本時間学会第2回大会
  • Place of Presentation: 山口
  • Year and Date: 2010-06-06
• [Presentation] 非線形振動子における時間リズムの生成消滅 (2010)
  • Author(s): 櫻井建成
  • Organizer: 日本時間学会第2回大会
  • Place of Presentation: 山口大学(山口県)
  • Year and Date: 2010-06-06
• [Presentation] A macroscopic pattern by an individual E. coli in a growth-diffusion-chemotaxis system
  • Author(s): Tatsunari Sakurai
  • Organizer: Japanese-German Workshop "Emerging Phenomena in Spatial Patterns“
  • Place of Presentation: マグデブルグ大学（ドイツ・マグデブルグ）
• [Remarks]
  • URL: http://cu.phys.s.chiba-u.ac.jp