• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Cellular Intelligence by Nonlinear Dynamics in a Slime Mold.

Research Project

Project/Area Number 11837001
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

UEDA Tetsuo (2000)  Hokkaido Univ.Res.Inst.for Electronic Sci., Prof., 電子科学研究所, 教授 (20113524)

西山 宣昭 (1999)  北海道大学, 電子科学研究所, 助教授 (10198525)

Co-Investigator(Kenkyū-buntansha) YAMADA Hiroyasu  Hokkaido Univ.Res.Inst.for Electronic Sci., A part time research worker, 電子科学研究所, 非常勤研究員 (70291937)
上田 哲男  北海道大学, 電子科学研究所, 教授 (20113524)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2000: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1999: ¥2,600,000 (Direct Cost: ¥2,600,000)
KeywordsTrue slime molds / Maze problem / motile rhythm / phytochrome / action spectra / photomorphogenesis / Physarum polycephalum / cell shape / 記憶現象 / 真正粘菌変形体 / 代謝ダイナミクス / 細胞骨格 / 結合振動子系
Research Abstract

The mechanism of higher information processing in a single cellular organism is clarified in terms of nonlinear dynamics in a large amoeboid cell of the Physarum plasmodium.
1. Maze-solving : The organism develops veins in a maze in such a way that veins which located initially at dead ends in a maze disappear and those which connect entrance and exit become thick. When there are two pathways, shorter one is selected. Thus, the organism connects the shortest route from entrance to exit.
2. Coupling among vein formation and rhythmic contraction : The veins are formed along the phase gradient of the rhythmic contraction which are artificially generated by oscillating the external temperature.
3. Size control : The large amoeboid cell fragments into many pieces by exposure to low temperature or by irradiation with light. Action spectroscopy and antagonistic action of red and far red indicate that one of the photoreceptors is phytochrome.
4. Time Memory : The effects of low temperature treatment remain in such a way that the total time of exposure is kept constant.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] Y.Kakiuchi: "Fragmentation of the plasmodium into equally sized pieces by low temperatures in the true slime mold Physarum plycephalum."Protoplasma. 206. 131-136 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Nakagaki: "Modulation of cellular rhythm and photoavoidance by oscillatory irradiation in the Physarum plasmodium."Biophysical Chemistry. 82. 23-28 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Ueda: "Dynamic patterns in the locomotion and feeding behaviors by the placozoan Trichoplax adhaerence."Bio Systems. 54. 65-70 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Nakagaki: "Interaction between cell shape and contraction pattern in the Physarum plasmodium."Biophysical Chemistry. 84. 195-204 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Nakagaki: "Moze-solving by an amoeboid organism."Nature. 407. 470-470 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Kakiuchi: "Light irradiation induces fragmentation of the plasmodium, a novel photo-morphogenesis in the true slime mold Physarum polycephalum."Photochemistry and Photobiology. (印刷中). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 上田哲男: "光シグナルトランスダクション"シュプリンガー・フェアラーク. 195 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 上田哲男: "バイオミメテックス ハンドブック"エヌ・ティー・エス. 1139 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Kakiuchi: "Fragmentation of the plasmodium into equally sized pieces by low temperatures in the true slime mold Physarum plycephalum : a new morphogenesis."Protoplasma. 206. 131-136 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Nakagaki: "Modulation of cellular rhythm and photoavoidance by oscillatory irradiation in the Physarum plasmodium."Biophysical Chemistry. 82. 23-28 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Ueda: "Dynamic patterns in the locomotion and feeding behaviors by the placozoan Trichoplax adhaerence."BioSystems. 54. 65-70 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Nakagaki: "Interaction between cell shape and contraction pattern in the Physarum plasmodium."Biophysical Chemistry. 84. 195-204 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Nakagaki: "Maze-solving by an amoeboid organism."Nature. 407. 470 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Y.Kakiuchi: "Light irradiation induces fragmentation of the plasmodium, a novel photo-morphogenesis in the true slime mold Physarum polycephalum : action spectra and evidence for involvement of the phytochrome."Photochemistry and Photobiology. (In press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Nakagaki: "Interaction between cell shape and contraction pattern in the Physarum plasmodium."Biophys.Chem. 84. 195-204 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 垣内康孝: "粘菌にみる巨大,細胞体制の構築"生物物理. (印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Kakiuchi: "Light irradiation induces fragmentation of the plasmodium, a novel photo-morphogenesis in the true slime and Physarum polycephalum."Photochem.Photobiol. (印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 上田哲男: "バイオミメテックスハンドブック"エヌ・ティー・エス. 1139 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 古家奨: "形の科学辞典"朝倉書店(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 上田哲男: "脳の力学系 「脳のフィジックス」"共立出版(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 上田哲男: "粘菌、特にその個体性複雑系のバイオフィジックス"共立出版(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Ueda: "21st Century Studies"山口書店(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 西山 宣昭: "真正粘菌変形体における原形質流動の自己組織化"電子科学研究. 39-41 (1999)

    • Related Report
      1999 Annual Research Report

URL: 

Published: 1999-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi