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2007 Fiscal Year Final Research Report Summary

Functional role of wood fibersin water transpor in vessel-bearing hardwoods

Research Project

Project/Area Number 18580158
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 林産科学・木質工学
Research InstitutionHokkaido University

Principal Investigator

SANO Yuzou  Hokkaido University, Research Faculty of Agriculture, Assistant Professor (90226043)

Project Period (FY) 2006 – 2007
Keywordshardwood / water transport / wood fiber / tracheid / acid fuchsin / pit / vessel / specizlization
Research Abstract

It is widely accepted that in vessel-bearing hardwoods wood fibers have specialized in mechanical support of plant body during long-term xylem evolution. To date, it is unclear to what extent wood fibers may contribute to water transport in xylem of vessel-bearing angiosperm species. In this study we conducted dye-injection experiments using acid fuchsin in order to examine the water transport of various types of wood fibers. In addition, distribution and structure of pits were examined by scanning electron microscopy in common walls between vessel elements and each type of wood fibers. As a result, specialized wood fibers such as libriform fibers and living fibers did not play any functional role in water transport, while less specialized wood fibers such as fiber-tracheids and vasicentric tracheids considerably contribute to water transport. Pit pairs were commonly present in common walls between vessel elements and the less specialized wood fibers. In contrast, pit pairs were absent from common walls between vessel elements and the specialized wood fibers. In some species with specialized fibers, no pits were found in the common walls. In others species with specialized fibers, blind pits were found on either side of the common walls. In conclusion, such differences in cell wall modifications are responsible for the differences in the function of the wood fibers in water transport. During the course of this study, interesting findings were obtained as by-products. In some species, vessels that were located in a particular layer of growth ring were simultaneously cavitated soon after maturation without severe water stress despite the fact that surrounding wood fibers retained water in their lumina. This put a new problem to researchers in some fields of tree physiology, wood science and functional plant anatomy.

  • Research Products

    (12 results)

All 2008 2007 2006

All Journal Article (6 results) (of which Peer Reviewed: 3 results) Presentation (6 results)

  • [Journal Article] Variation in the distribution and structure of pits between vessels and non-perforate tracheary elements in angiosperm woods2008

    • Author(s)
      Sano Y., Ohta T., Jansen S.
    • Journal Title

      IAWA(International Association of Wood Anatomisits)Journal 29

      Pages: 1-15

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Variation in the distribution and structure of pits between vessels and non-perforate tracheary elements in angiosperm woods.2008

    • Author(s)
      Sano Y., Ohta T., Jansen S.
    • Journal Title

      IAWA (International Association of Wood Anatomisits) Journal 29

      Pages: 1-15

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Pit membranes in tracheary elements of Rosaseae and related families: new records of tori and pseudo-tori2007

    • Author(s)
      Jansen S., Sano Y., Choat B., Rabaey D., Lens F., Dute R. R.
    • Journal Title

      American Journal of Botany 94

      Pages: 503-514

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Water transport in vessel-less angiosperms: Conducting efficiency and cavitation safety2007

    • Author(s)
      Hacke U., Sperry J. S., Feild T., Sano Y., Sikkema E., PittermannJ.
    • Journal Title

      International Journal of Plant Science 168

      Pages: 1113-1126

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Pit membranes in tracheary elements of Rosaseae and related families: new records of tori and pseudo-tori.2007

    • Author(s)
      Jansen S., Sano Y., Choat B., Rabaey D., Lens F., Dute R.R.
    • Journal Title

      American Journal of Botany 94

      Pages: 503-514

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Water transport in vessel-less angiosperms: Conducting efficiency and cavitation safety.2007

    • Author(s)
      HackeU., SperryJ. S., FeildT., SanoY., Sikkema E., Pittermann J.
    • Journal Title

      International Journal of Plant Science 168

      Pages: 1113-1126

    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] ブナとカツラにおける年輪外層部の道管の通水機能2008

    • Author(s)
      佐野雄三
    • Organizer
      第58回日本木材学会大会
    • Place of Presentation
      つくば市(つくば国際会議場)
    • Year and Date
      20080317-19
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Water transport function of vessels in outer layer of annual rings in Cercidiphyllum japonicum and Fagus crenata.2008

    • Author(s)
      Sano Y.
    • Organizer
      The 58th annual meeting of the Japan Wood Research Society
    • Place of Presentation
      Tsukuba (Tsukuba International Congress Center)
    • Year and Date
      20080317-18
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Water transport in imperforate tracheary elements in some angiosperm trees2007

    • Author(s)
      Sano Y., Jansen S.
    • Organizer
      第57回日本木材学会大会
    • Place of Presentation
      広島市(安田女子大学)
    • Year and Date
      20070808-10
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Water transport in imperforate tracheary elements in some angiosperm trees.2007

    • Author(s)
      Sano Y., Jansen S.
    • Organizer
      The 57th annual meeting eeting of the Japan Wood Research Society
    • Place of Presentation
      Hiroshima (Yasuda Women's University)
    • Year and Date
      20070808-10
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] バラ科における木部繊維間壁孔の構造的変異2006

    • Author(s)
      佐野雄三, Jansen S.
    • Organizer
      第56回日本木材学会大会
    • Place of Presentation
      秋田市(秋田大学,秋田県総合生活文化会館)
    • Year and Date
      20060808-10
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Structural variations in interfiber pits of Rosaseae.2006

    • Author(s)
      Sano Y., Jansen S.
    • Organizer
      The 56th annual meeting of the Japan Wood Research Society
    • Place of Presentation
      Akita (Akita University, Akita Integrated Life Cultural Hall)
    • Year and Date
      20060808-10
    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2010-02-04  

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