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Researches on the diversity of growing patterns in biological systems

Research Project

Project/Area Number 11214205
Research Category

Grant-in-Aid for Scientific Research on Priority Areas (B)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionChuo University

Principal Investigator

MATSUSHITA Mitsugu  Chuo University, Faculty of Science and Engineering, Professor, 理工学部, 教授 (20091746)

Co-Investigator(Kenkyū-buntansha) KIMURA Masato  Kyushu University, Mathematics Graduate Courses, Associate Professor, 大学院・数理学研究院, 助教授 (70263358)
MIMURA Masayasu  Hiroshima University, Graduate School of Science, Professor, 大学院・理学研究科, 教授 (50068128)
KATORI Makoto  Chuo University, Faculty of Science and Engineering, Professor, 理工学部, 教授 (60202016)
Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥13,000,000 (Direct Cost: ¥13,000,000)
Fiscal Year 2001: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2000: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1999: ¥8,700,000 (Direct Cost: ¥8,700,000)
KeywordsGrowing pattern / Pattern formation / Bacteria / Colony / Bacillus subtilis / Proteus mirabilis / Reaction-diffusion system / Concentric-ring Pattern / クウォーラム・センシング / クウオーラム・センシング / パターン形式
Research Abstract

Bacteria form characteristic and diverse colonies according to variation of environmental conditions such as nutrient concentration and substrate hardness. This implies that bacteria live actively by interacting collectively or multicellularly with their environment, instead of living unicellularly and passively. In order to elucidate this kind of collective behavior of biological organisms we have studied the growth mechanism and morphological change in colony formation of bacteria both microscopically and macroscopically. We have established morphological diagrams when varying both nutrient concentration and substrate softness. We have also elucidated the growth conditions and characteristics of various colony patterns for species Bacillus subtilis and Proteus mirabilis. Theoretically we have thoroughly investigated how well we can describe our experimental observations from the reaction-diffusion approach. All these results contribute not only to the study of colony formation of bacteria but also to the enlargement of experimental and theoretical studies on pattern formation of the population of biological organisms in general. The species Proteus mirabilis forms macroscopically almost perfect concentric-ring like colonies with approximately equal spacing by repeating collective migration and rest alternately. We have elucidated phenomenological mechanism for the repeated interface growth of the concentric-ring like colonies.

Report

(4 results)
  • 2002 Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (28 results)

All Other

All Publications (28 results)

  • [Publications] M.Matsushita: "Dynamic aspects of the structured cell population in a swarming colony of Proteus mirabilis"J. Bacteriol.. 182. 385-393 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M.Matsushita: "Theory of periodic swarming of bacteria: application to Proteus mirabilis"Phys. Rev. E. 63. No.031915,1-No.031915,11 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M.Katori: "Trajectories of Two Friendly Walkers"Trans. Materials Research Society of Japan. 26. 405-407 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M.Mimura: "Reaction-diffusion modelling of bacterial colony patterns"Physica A. 282. 283-303 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M.Kimura: "Time local existence of a moving boundary of the Hele-Shaw flow with suction"Euro. J. Appl. Math.. 10. 581-605 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M. Matsushita: "Dynamic aspects of the structured cell population in a swarming colony of Proteus mirabilis"J. Bacteriol.. 182, No. 2. 385-393 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M. Matsushita: "Theory of periodic swarming of bacteria : application to Proteus mirabilis"Phys. Rev. E. 63, No. 031915. 1-11 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M. Katori,: "Trajectories of Two Friendly Walkers"Trans. Materials. Res. Jpn.. 26. 405-407 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M. Mimura: "Reaction-diffusion modelling of bacterial colony Patterns"Physica A,. 282. 283-303 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M. Kimura: "Time local existence of a moving boundary of the Hele-Shaw flow with suction"Euro. J. Appl. Math.. 10. 581-605 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] A.Czirok: "Theory of periodic swarming of bacteria : application to Proteus mirabilis"Phys.Rev.E. 63. No.03915 1-11 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] K.Watanabe: "Dynamical Properties of Transient Spatis-Temporal Patterns in Bacterial Colony of Proteus mirabilis"J.Phys.Soc.Jpn.. 71・2. 650-656 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Matsuyama: "Population Morphogenesis by Cooperative Bacteria"Forma. 16・4. 307-326 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Katori: "Trajectories of Two Friendly Walkers"Trans.Materials Res.Soc.Jpn.. 26. 405-407 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.Kawaguchi: "Hormon-mediated pattern formation in seeding of plants : a competitive growth dynamics model"J.Phys.Soc.Jpn.. 70. 3155-3160 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Kimura: "A level set method using the signed distance function"Jap.J.Indust.Appl.Math.. (To appear).

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Mimura: "Reaction-Diffusion Modeling of Bacterial Colony Patterns"Physica A. 282. 283-303 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.Itoh: "Periodic Colony Formation of Bacteria due to Their Cell Reproduction and Movement"Prog.Theor.Phys.Suppl.. 139. 139-151 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] J.Wakita: "Periodic Colony Formation by Bacterial Species Bacillus subtilis"J.Phys.Soc.Jpn.. 70・3. 3701-3709 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Katori: "Percolation Transitions and Wetting Transitions in Stochastic Models"Brazilian J.Phys.. 30・1. 83-96 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Mimura: "Dynamics of Travelling Breathers Arising in Reaction-Diffusion Systems-ODE Modelling Approach-"Hiroshima Math.J.. 30. 221-256 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Kimura: "Shape Derivative and Linearization of Moving Boundary Problems"GA Kuto Int.Ser.Math.Sci.Appl.. 13. 167-179 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H. Itoh: "Periodic Pattern Formation of Bacterial Colonies"J. Phys. Soc. Jpn.. 68.4. 1436-1443 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M. Matsushita: "Formation of Colony Patterns by a Bacterial Cell Population"Physica A. 274. 190-199 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T. Matsuyama: "Dynamic Aspects of the Structured Cell Population in a Swarming Colony of Proteus mirabiles"J. Bacteriol.. 182.2. 385-393 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] S. Kizaki: "Analysis of Canopy-Gap Structures of Forests by Ising-Gibbs States"J. Phys. Soc. Jpn.. 68.8. 2553-2560 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M. Katori: "Survival Probabilities for Discrete Time Models in One Dimension"J. Stat. Phys.. 99(to appear). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] M. Kimura: "Time Local Existence of a Moving Boundury of the Hele-Shaw Flow with Suction"Eur. J. Appl. Math.. (to appear). (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2018-03-28  

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