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Hydraulic architecture model based on heterorhizy: integration of hierarchical hydraulic information between cells and root system

Research Project

Project/Area Number 18H02188
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 39020:Crop production science-related
Research InstitutionNagoya University

Principal Investigator

Yamauchi Akira  名古屋大学, 生命農学研究科, 教授 (30230303)

Co-Investigator(Kenkyū-buntansha) 三屋 史朗  名古屋大学, 生命農学研究科, 准教授 (70432250)
仲田 麻奈  名古屋大学, 農学国際教育研究センター, 助教 (70623958)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Keywordsアクアポリン / 異形根 / スベリン / プレッシャーチャンバー / 水通導性 / ルートプレッシャープローブ / 異形根性 / プレッシャーチャンバー法 / セルフプレッシャープローブ / 根 / 吸水 / セルプレッシャープロ―ブ / セルプレッシャープローブ
Outline of Final Research Achievements

This study showed the functional significance of heterorhizy and specifically that the roles in water uptake were different among the component roots. We identified that S-type LRs had fewer cell layers across the radial pathway, lack of aerenchyma in mid cortex, less suberin deposition in the endodermis, lack of an exodermis, and high aquaporin activities, which resulted in lower hydraulic resistance for the radial water flow in roots. Namely, S-type LRs had the highest water uptake ability among the three component roots, and thereby contributed more to the water uptake of the whole root system. On the other hand, main roots and L-type LRs might contribute to overall water uptake by producing laterals and expanding root surface area of S-type LRs. In addition, formation of aerenchyma in mid cortex of main roots facilitates diffusion of oxygen from shoot to root tips that is essential for metabolic activities, branching, and elongation of roots.

Academic Significance and Societal Importance of the Research Achievements

本研究の最大の特色は、従来は均質な組織として捉えられていた根系を、構成根間の差に着目し解析した点である。このような観点から、作物根の水吸収に関わる水分生理について取り組んでいる研究グループは他に例を見ない。とくに、S型側根が構成根の中で相対的に高い水通導性を有することを示し、構成根間の役割分担によって根系機能が制御されるとする、従来になかった新しい考え方を実証した。構成根毎の機能の遺伝子制御に関わる研究の進展と相まって、理想的根系をデザインし、それの基づいた根系生理機能に関わる育種の可能性を、本研究成果はより現実的なものとした。

Report

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

    (27 results)

All 2023 2022 2021 2020 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (23 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results)

  • [Int'l Joint Research] International Rice Research Institute(フィリピン)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Philippine Rice Research Institute(フィリピン)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Root sampling method for aquaporin gene expression analysis in rice2022

    • Author(s)
      Watanabe Y, Mitsuya S, Yamauchi A.
    • Journal Title

      Plant Root

      Volume: 16 Issue: 0 Pages: 11-20

    • DOI

      10.3117/plantroot.16.11

    • ISSN
      1881-6754
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Morphological and histological differences among three types of component roots and their differential contribution to water uptake in the rice root system2020

    • Author(s)
      Watanabe Yumika、Kabuki Takuya、Kakehashi Takahiro、Kano-Nakata Mana、Mitsuya Shiro、Yamauchi Akira
    • Journal Title

      Plant Production Science

      Volume: 23 Issue: 2 Pages: 191-201

    • DOI

      10.1080/1343943x.2020.1730701

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Root plasticity as a key trait for stable crop production with strengthened climate stress resilience2023

    • Author(s)
      Akira Yamauchi
    • Organizer
      2023 Annual meeting and conference of agronomy society of Taiwan
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 乾燥ストレス後の再潅水がイネ器官間の代謝変動に与える影響.2022

    • Author(s)
      仲田(狩野)麻奈, 若山正隆, 門脇里恵, Deshabandu KHST, 山崎竜太朗, 三屋史朗, 山内章, 江原宏
    • Organizer
      日本作物学会第254回講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] FOEAS圃場を活用したイネの水ストレス適応性評価2022

    • Author(s)
      野田康貴, 松山恵美子, 黒木隆一, 土井一行, 槇原大悟, 山内章, 江原宏, 仲田(狩野)麻奈
    • Organizer
      第152回日本作物学会東海支部講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Strategy of adaptation and plasticity of crop root under water stress environment2022

    • Author(s)
      Kano-Nakata M, Yamauchi A., Inukai, Y, Hiroshi Ehara
    • Organizer
      The 11th Global Plasma Forum
    • Related Report
      2021 Annual Research Report
  • [Presentation] 塩ストレストレーニングはストレス記憶により長期塩害条件で生育するイネの収量を改善する2021

    • Author(s)
      佐久間 哲・山内 章・三屋史朗
    • Organizer
      日本作物学会第251回講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 葉鞘でのナトリウム排除能力の異なるイネ2品種におけるナトリウム輸送体の発現量解析2021

    • Author(s)
      後藤 樹・山内 章・三屋史朗
    • Organizer
      日本作物学会第251回講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Root water uptake ability in relation to developmental plasticity and hydraulic conductivity under various types of water stresses2021

    • Author(s)
      Akira Yamauchi, Mana Kano-Nakata, Shiro Mitsuya, Yoshiaki Inukai, Yumika Watanabe, Kaho Inoguchi, Roel Suralta, Jonathan Niones
    • Organizer
      11th Symposium of the International Society of Root Research (ISRR11)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 根系形態と根呼吸に着目したイネの乾燥ストレス適応反応2021

    • Author(s)
      仲田(狩野)麻奈・三屋史朗・江原宏・山内章
    • Organizer
      第53回根研究集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Functional Significance of Roots for Adaptation and Productivity of Crop Plants Grown under Various Environmental Stresses2021

    • Author(s)
      Akira Yamauchi, Mana Kano-Nakata, Shiro Mitsuya, Yoshiaki Inukai, Roel Suralta, Jonathan Niones
    • Organizer
      The 10th Asian Crop Science Association Conference (ACSAC 10)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Differences in Aquaporin Expression and Their Response to Osmotic Stress among Component Roots in a Rice Root System2021

    • Author(s)
      Yumika Watanabe, Shiro Mitsuya, Akira Yamauchi
    • Organizer
      The 10th Asian Crop Science Association Conference (ACSAC 10)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ルートプレッシャープローブを用いたイネ個根の水通導性測定及び異形根の水吸収能力の評価2021

    • Author(s)
      渡邉友実加・三屋史朗・山内章
    • Organizer
      第54回根研究集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 浸透圧ストレス解除に対してイネ異形側根が発揮する発育的可塑性と水通導性との関係2020

    • Author(s)
      井ノ口 華帆,渡邉 友実加,三屋 史朗,仲田 麻奈,山内 章
    • Organizer
      日本作物学会第250回講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] FUNCTIONAL SIGNIFICANCE OF HETERORHIZY IN A ROOT SYSTEM FOR WATER UPTAKE IN RICE PLANT2019

    • Author(s)
      Y Watanabe, T Kabuki, M Kano-Nakata, S Mitsuya, A Yamauchi
    • Organizer
      Rhizosphere 5
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 変動水分条件に対してイネ根が発揮する側根発育および通気組織形成に関わる可塑性と水通導性との関係2019

    • Author(s)
      井ノ口華帆,三屋史朗,仲田(狩野)麻奈,山内章
    • Organizer
      第50回記念根研究集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 変動土壌水分条件に対してイネ根系が発揮する発育的可塑性に関わるQTL 解析2019

    • Author(s)
      丹下美咲,仲田(狩野)麻奈,三屋史朗,山内章
    • Organizer
      第50回記念根研究集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] イネ根系を構成する異形根間のアクアポリン遺伝子発現量差異とその根系水通導性に対する機能的役割おける品種間比較2019

    • Author(s)
      渡邉友実加,三屋史朗,仲田(狩野)麻奈,山内章
    • Organizer
      第50回記念根研究集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 異なる土壌水分条件に対する炭素分配と根系発育反応におけるイネ科作物の種間比較2019

    • Author(s)
      植田夏実,三屋史朗,山内 章,仲田(狩野)麻奈
    • Organizer
      日本作物学会第247回講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 水ストレス下におけるイネの生育と糖動態との関係2019

    • Author(s)
      山崎竜太郎, 仲田(狩野)麻奈, 三屋史朗, Stella Owusu-Nketia, 山内 章
    • Organizer
      日本作物学会第247回講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] プレッシャーチャンバー法を用いたイネ根系の水通導性評価2019

    • Author(s)
      渡邉友実加,仲田(狩野)麻奈、三屋史朗,山内 章
    • Organizer
      日本作物学会第247回講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 異なる土壌水分条件に対するイネ異形根におけるリグニン・スベリン蓄積および通気組織形成応答の品種間差異2018

    • Author(s)
      渡邉友実加,株木拓也,掛橋孝洋,三屋史朗,仲田(狩野)麻奈,山内 章
    • Organizer
      第48回根研究集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Enhanced Osmotic Hydraulic Conductivity and Respiration Leading to Active Water Transport in Response to Rewatering after Drought in Rice Root2018

    • Author(s)
      Yumika Watanabe, Takuya Kabuki, Takahiro Kakehashi, Emi Kameoka, Mana Kano-Nakata, Shiro Mitsuya, Akira Yamauchi
    • Organizer
      10th Symposium of the International Society of Root Research
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Root hydraulic conductivity increase upon rewatering after drought in upland rice cultivar IRAT 109 and its relationship with developmental and histological responses examined based on heterorhizy2018

    • Author(s)
      Yumika Watanabe, Takuya Kabuki, Takahiro Kakehashi, Mana Kano-Nakata, Shiro Mitsuya, Akira Yamauchi
    • Organizer
      The 5th International Rice Congress 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 浸透ポテンシャル勾配が駆動力となるときの水移動における根齢と異形根の機能の関係2018

    • Author(s)
      渡邉友実加,三屋史朗,仲田(狩野)麻奈、山内 章
    • Organizer
      第49回根研究集会
    • Related Report
      2018 Annual Research Report

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

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