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Growth experiments on prevention mechanisms of allocation patterns on ramet self-thinning in clonal plants

Research Project

Project/Area Number 18K06426
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 45040:Ecology and environment-related
Research InstitutionTokyo Metropolitan University

Principal Investigator

Suzuki Jun-Ichirou  東京都立大学, 理学研究科, 教授 (00291237)

Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsクローナル植物 / 自己間引き / steam girdling法 / 地下貯蔵物質 / 物質転流 / 感染症 / 防御機構 / 生理的統合 / 転流 / ラメット / 同化産物 / 季節的枯死
Outline of Final Research Achievements

The growth experiments aimed to clarify the mechanism by which ramet self-thinning rarely occurs in clonal plants. We proposed the hypothesis that allocation patterns of assimilates to belowground organs from early growth stages reduce each ramet growth and prevent self-thinning in clonal plants that often exhibit large amounts of storage matter. Previous studies emphasised physiological integration between ramets or seasonal die-back of ramets. We adopted steam-girdling to prevent matter allocation from aboveground to belowground parts, which enhanced the infection rates and mortality of ramets. However, there was no significant increase in ramet sizes. These results suggest that conversion of matter allocation may affect the defence system of clonal plants.

Academic Significance and Societal Importance of the Research Achievements

葉と茎や花からなる地上茎と根からなるラメットが、地下茎などを介して栄養繁殖により、複数連結したクローナル植物は、シダから被子植物にまで存在し、多くのバイオームで構成草本種の大半がクローナル植物である。温帯の林床では、草本の70%程度の種がクローナル植物だとされ、その生態的特性の理解は、生態系機能や生物多様性の保全においても重要である。一方で、クローナル植物の生態的特性に関する研究は、いまだに十分ではなく、その特異な物質転流の意義については解明が必要である。

Report

(5 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (3 results)

All 2021 2020 2019

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (1 results)

  • [Journal Article] Use of weeds as a nitrogen resource with slashing and mulching management in no-tillage with soybean crop2020

    • Author(s)
      サンガット ビナイ、金子 信博、佐倉 朗夫、鈴木 準一郎
    • Journal Title

      Japanese Journal of Organic Agriculture Science

      Volume: 12 Issue: 1 Pages: 71-81

    • DOI

      10.24757/joas.12.1_71

    • NAID

      130007947787

    • ISSN
      1884-5665, 2434-6217
    • Year and Date
      2020-07-31
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dead wood offsets the reduced live wood carbon stock in forests over 50?years after a stand-replacing wind disturbance2019

    • Author(s)
      Suzuki Satoshi N.、Tsunoda Tomonori、Nishimura Naoyuki、Morimoto Junko、Suzuki Jun-Ichirou
    • Journal Title

      Forest Ecology and Management

      Volume: 432 Pages: 94-101

    • DOI

      10.1016/j.foreco.2018.08.054

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 不均質な土壌資源分布下でのクローナル植物カキドオシの匍匐枝導管の解剖学的形態解析2021

    • Author(s)
      伊藤允, 立木佑弥, 鈴木準一郎
    • Organizer
      日本生態学会第68回全国大会 (2021年3月、岡山)
    • Related Report
      2020 Research-status Report

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Published: 2018-04-23   Modified: 2024-01-30  

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