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Origin of unusual tension stress in the aerial root of Ficus species-Structure and biomechanics of strangler trees

Research Project

Project/Area Number 15405015
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Biophysics
Research InstitutionNagoya University

Principal Investigator

YAMAMOTO Hiroyuki (2004-2005)  Nagoya University, Graduate School of Bio-agricultural Sciences, Professor (50210555)

奥山 剛 (2003)  名古屋大学, 大学院・生命農学研究科, 教授 (00023482)

Co-Investigator(Kenkyū-buntansha) YOSHIDA Masato  Nagoya University, Graduate School of Bio-agricultural Sciences, Research Associate (30242845)
OKUYAMA Takashi  Nagoya University, Graduate School of Bio-agricultural Sciences, Professor (00023482)
山本 浩之  名古屋大学, 大学院・生命農学研究科, 助教授 (50210555)
Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥10,200,000 (Direct Cost: ¥10,200,000)
Fiscal Year 2005: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2004: ¥5,100,000 (Direct Cost: ¥5,100,000)
Fiscal Year 2003: ¥2,900,000 (Direct Cost: ¥2,900,000)
KeywordsFicus elastica Roxb. / Ficus benjamina Lour. / gelatinous fiber / plant biomechanics / growth stress / strangler tree / aerial root / plant habitat / 引張あて材 / 負重力屈性 / イチジク科 / 生存戦略 / 引張の成長応力 / Ficus / FICUS / Ficus elastica / ミクロフィブリル / 解放ひずみ
Research Abstract

In this study, the survival strategy of strangler plants was investigated from the viewpoint of tissue mechanics. Release strain measurements were conducted on the aerial roots of Ficus benjamina Lour. and Ficus elastica Roxb. to understand stress generation in aerial roots. Regardless of whether the roots are small roots that are directly attached to the ground (Type I), small roots that have merged with other roots without reaching the ground (Type II), or large roots that are directly attached to the ground (Type III), all gave negative strain values indicating that they were under tensile stress prior to measurements. Such strains were inversely affected by the strain gauge distance from the root attachment (either to the ground or to other roots) and by the root diameter. Tensile stresses emanated from the gelatinous fibers found near the pith of the roots. The gelatinous layer in aerial root showed a typical morphology and strength as observed in the tension wood xylem of the stem.

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (10 results)

All 2009 2007 2005 2004

All Journal Article (8 results) Presentation (2 results)

  • [Journal Article] Stress generation in aerial roots of Ficus elastica.2009

    • Author(s)
      Abasolo, W. P., Yoshida, M., Yamamoto, H., Okuyama, T.
    • Journal Title

      IAWA Journal 30・2

      Pages: 216-224

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Stress generation in aerial roots of Ficus elastica.2009

    • Author(s)
      Abasolo, W. P., Yoshida, M., Yamamoto, H., Okuyama, T.
    • Journal Title

      IAWA Journal Vol. 30

      Pages: 216-224

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] The influence of boiling and drying treatments on the behaviors of tension wood with gelatinous layers in Zelkova serrata.2007

    • Author(s)
      Abe, K., Yamamoto, H.
    • Journal Title

      Journal of Wood Science 53・1

      Pages: 5-10

    • NAID

      10018536754

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] The influences of boiling and drying treatments on the behaviors of tension wood with gelatinous layers in Zelkova serrata2007

    • Author(s)
      Abe . K., Yamamoto, H.
    • Journal Title

      Journal of Wood Science Vol. 53

      Pages: 5-10

    • NAID

      10018536754

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Role of the gelatinous layer (G-layer) on the origin of the physical properties of the tension wood of Acer sieboldianum.2005

    • Author(s)
      Yamamoto, H., Abe, K., Arakawa, Y., Okuyama, T., Gril, J.
    • Journal Title

      Journal of Wood Science 51・3

      Pages: 222-233

    • NAID

      10016448007

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Role of the gelatinous layer (G-layer) on the origin of the physical properties of the tension wood of Acer sieboldianum.2005

    • Author(s)
      Yamamoto, H., Abe, K., Arakawa, Y., Okuyama, T., Gril, J.
    • Journal Title

      Journal of Wood Science Vol. 51

      Pages: 222-233

    • NAID

      10016448007

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Influence of structure and chemical composition on thermal softening of palasan canes (Calamus merrillii).2005

    • Author(s)
      Abasolo, W.P., Yoshida, M., Yamamoto, H., Okuyama, T.
    • Journal Title

      IAWA Journal 26

      Pages: 363-374

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Role of the gelatinous layer (G-layer) on the origin of the physical properties of the tension wood of Acer sieboldianum.2005

    • Author(s)
      Yamamoto, H., Abe, K., Arakawa, Y., Okuyama, T., Gril, J.
    • Journal Title

      Journal of Wood Science 51

      Pages: 222-233

    • NAID

      10016448007

    • Related Report
      2005 Annual Research Report
  • [Presentation] Characterization of the gelatinous layer as origins of the xylem properties peculiar to the tension wood.2005

    • Author(s)
      Yamamoto, H., Arakawa, Y., Abe, K., Okuyama, T., Yoshida, M.
    • Organizer
      The 5th Pacific Regional Wood Anatomy Conference, Austria Center
    • Place of Presentation
      Kyoto, Japan
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Presentation] Behaviors of tension wood with gelatinous layers in Zelkova serrata.2004

    • Author(s)
      Abe, K., Arakawa, Y., Yamamoto, H, Okuyama, T.
    • Organizer
      The 54^<th> Annual Meeting of Japan Wood Research Society (p. 86)
    • Place of Presentation
      Sapporo
    • Year and Date
      2004-08-04
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary

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Published: 2003-04-01   Modified: 2016-04-21  

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