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Regulation mechanisms of cavitation at bordered pits as estimated by analyses of the structures

Research Project

Project/Area Number 16H04930
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Forest science
Research InstitutionHokkaido University

Principal Investigator

Sano Yuzou  北海道大学, 農学研究院, 教授 (90226043)

Co-Investigator(Kenkyū-buntansha) 重冨 顕吾  北海道大学, 農学研究院, 講師 (20547202)
山岸 祐介  北海道大学, 農学研究院, 助教 (80770247)
Research Collaborator Yamagishi Shohei  
Umebayashi Toshihiro  
Aoki Dan  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
Fiscal Year 2018: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2016: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Keywords有縁壁孔 / キャビテーション / 壁孔壁 / 道管相互壁孔 / 通水 / 壁孔 / 樹木 / 二次木部 / 透水性 / 脂質 / 広葉樹 / 道管 / 抽出成分 / 森林工学
Outline of Final Research Achievements

In an attempt to elucidate the regulation mechanisms of water flow and cavitation at bordered pits in trees, we revealed the fine structures of intervascular pit membranes and the presence or absence of gel-like incrustations on the pit membranes for a total of 28 species. The porosity of the pit membranes were largely varied among taxa. The gel-like incrustations were estimated as fatty acids. We also compared the sample preparation techniques for electron microscopy to find the intact structures of such delicate bordered pit membranes, and showed that a few traditional and novel methods were very useful for the purpose.

Academic Significance and Societal Importance of the Research Achievements

樹木の通水系において浄化フィルターや安全弁のような働きを担う壁孔の仕組みに関して、インタクトな微細構造とともに、当該分野でほとんど考慮されていなかったゲル状被覆物について多くの知見を得ることができた。また、古典的な電子顕微鏡技法から新規なミクロ解析技術まで、いくつかの研究手法の有効性についても明らかにすることができた。本研究は、特に樹木生理学、植物解剖学など基礎的分野において大きな貢献を果たすものと信じる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (7 results)

All 2019 2018 2017

All Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Presentation] 一部広葉樹の道管相互壁孔に見られる有機溶媒可溶な堆積物の局在と構成成分2019

    • Author(s)
      山岸松平,山岸祐介,重冨顕吾,佐野雄三,青木弾,福島和彦
    • Organizer
      第69回日本木材学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] アカエゾマツ造林木における内部割れの発生実態と組織学的特徴2019

    • Author(s)
      佐野雄三,石垣絵梨果,村上了,佐藤真由美,大崎久司,渡辺誠二
    • Organizer
      第69回日本木材学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 一部広葉樹の辺材で道管相互壁孔に堆積する抽出成分に関する研究2018

    • Author(s)
      山岸松平、重冨顕吾、山岸祐介、佐野雄三
    • Organizer
      第68回日本木材学会大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 針葉樹の心材形成過程で見られる脱水現象に関する研究2018

    • Author(s)
      上田幹朗、山岸祐介、佐野雄三
    • Organizer
      第68回日本木材学会大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 心材培養実験系下カラマツ材組織に誘発される脱水過程のcryo-SEM観察2017

    • Author(s)
      上田幹朗、山岸祐介、佐野雄三
    • Organizer
      第67回日本木材学会大会
    • Place of Presentation
      アクロス福岡(福岡県・福岡市)
    • Year and Date
      2017-03-17
    • Related Report
      2016 Annual Research Report
  • [Presentation] Structure of intervascular pit membranes in xerophytic trees growing in Bonin Islands2017

    • Author(s)
      Sano Y., Saiki S., Ishida A.
    • Organizer
      9th Pacific Regional Wood Anatomy Conference
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 父島の乾性低木林構成種における通水要素間壁孔の微細構造2017

    • Author(s)
      佐野雄三
    • Organizer
      平成28年度京都大学生態学研究センター公募ワークショップ「樹木の乾燥枯死・樹病枯死メカニズムの解明と温暖化等による乾燥影響評価」
    • Place of Presentation
      京都大学東京オフィス(東京都千代田区)
    • Related Report
      2016 Annual Research Report
    • Invited

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Published: 2016-04-21   Modified: 2020-03-30  

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