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Roles of Phenolic Compounds in Mediating the Rhizosphere Formation in Woody Plant Roots

Research Project

Project/Area Number 23688017
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Forest science
Research InstitutionThe University of Tokyo

Principal Investigator

OSAWA Hiroki  東京大学, 農学生命科学研究科, 助教 (90401182)

Project Period (FY) 2011-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥23,010,000 (Direct Cost: ¥17,700,000、Indirect Cost: ¥5,310,000)
Fiscal Year 2013: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2012: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Fiscal Year 2011: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
Keywordsプロアントシアニジン / ボーダーライクセル / 根 / 根冠 / 根圏 / アルミニウム / 酸性土壌 / 脱落細胞 / 細胞内小器官 / 根端 / 樹木根 / カテキンガレート / フラボノイド / プロアントシアジニン / ボーダーセル / カテキン / 土壌微生物
Outline of Final Research Achievements

Root border-cells play a central role in root growth and development, although their formation patterns are divergent among plant species. We find novel border-like cells (BLCs) that peel from the lateral root cap, developing a sheath structure in a leguminous tree Acacia mangium. We also found that proanthocyanidins (PAs) inside the peeled BLCs were conveyed to the rhizosphere of maturing root zone. Despite the loss of membrane integrity, the PAs in the detached cells were hardly eroded for at least three days. Root-inoculation assay revealed that propagation of bacterium pathogen in root surfaces of A. mangium was restricted more than that of soybean, which lack both root PA accumulation and BLC formation. Meanwhile, the adhesion of A. mangium BLCs onto the root tip in lettuce hardly inhibited its root elongation. These results suggest that BLCs carrying PA from root surface to rhizosphere may play protective roles including a pathogen defense through a repellent dispatcher.

Report

(4 results)
  • 2014 Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • Research Products

    (12 results)

All 2015 2014 2013 2012 2011 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (8 results) (of which Invited: 1 results) Remarks (1 results)

  • [Journal Article] The rapid accumulation of aluminum is ubiquitous in both the evergreen and deciduous leaves of Theaceae and Ternstroemiaceae plants over a wide pH range in acidic soils2013

    • Author(s)
      Osawa H, Ikeda S, Tange T
    • Journal Title

      Plant and Soil

      Volume: 49-59 Issue: 1-2 Pages: 49-59

    • DOI

      10.1007/s11104-012-1285-5

    • Related Report
      2013 Annual Research Report 2012 Annual Research Report 2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Transient proliferation ofproanthocyanidin-accumulating cells on the epidermal apex contributes tohighly aluminum-resistant root elongation in camphor tree2011

    • Author(s)
      Osawa H, Endo I, Hara Y, Matsushima Y, Tange T
    • Journal Title

      Plant Physiology

      Volume: 155 Issue: 1 Pages: 433-446

    • DOI

      10.1104/pp.110.166967

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A cell-type-specific defect in border cell formation in the Acacia mangium root cap developing an extraordinary sheath of sloughed-off cells2011

    • Author(s)
      Endo I, Tange T, Osawa H
    • Journal Title

      Annals of Botany

      Volume: 108 Issue: 2 Pages: 279-290

    • DOI

      10.1093/aob/mcr139

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] Effect of aluminum on endocytosis and intracellular dynamics of proanthocyanidins in root-tip cells of woody plants2015

    • Author(s)
      Zhang M, Osawa H, Tange T
    • Organizer
      第126回 日本森林学会大会
    • Place of Presentation
      北海道大学(北海道札幌市)
    • Year and Date
      2015-03-25 – 2015-03-29
    • Related Report
      2013 Annual Research Report
  • [Presentation] Comprehensive analysis of proanthocyanidin accumulation in woody plant roots2014

    • Author(s)
      Osawa H, Matsushima Y, Ikeda S, Tange T
    • Organizer
      6th International Symposium on Physiological Processes in Roots of Woody Plants,
    • Place of Presentation
      Nagoya University, Nagoya (Japan)
    • Year and Date
      2014-09-08 – 2014-09-13
    • Related Report
      2013 Annual Research Report
  • [Presentation] Subcellular Localization of Polymeric Flavonoids in Border-like Cells of Al-tolerant Woody Plant Acacia mangium2014

    • Author(s)
      Zhang M, Osawa H, Tange T
    • Organizer
      6th International Symposium on Physiological Processes in Roots of Woody Plants,
    • Place of Presentation
      Nagoya University, Nagoya (Japan)
    • Year and Date
      2014-09-08 – 2014-09-13
    • Related Report
      2013 Annual Research Report
  • [Presentation] Use of protoplasts to determine the subcellular localization of polymeric flavonoids in roots of Acacia mangium2014

    • Author(s)
      Zhang M, Osawa H, Tange T
    • Organizer
      第125回 日本森林学会大会
    • Place of Presentation
      大宮ソニックシティ(埼玉県大宮市)
    • Year and Date
      2014-03-26 – 2014-03-29
    • Related Report
      2013 Annual Research Report
  • [Presentation] アカシアマンギウム根プロトプラストを用いた重合性フラボノイドの細胞内局在の確定2014

    • Author(s)
      張萌・大澤裕樹・丹下健
    • Organizer
      第125回日本森林学会大会
    • Place of Presentation
      大宮ソニックシティ(埼玉県)
    • Related Report
      2012 Annual Research Report
  • [Presentation] アカシアマンギウム境界様細胞の重合性フラボノイドの細胞学的特性および局在性の解析2013

    • Author(s)
      張萌・大澤裕樹・丹下健
    • Organizer
      第124回日本森林学会大会
    • Place of Presentation
      岩手大学(岩手県)
    • Related Report
      2012 Annual Research Report 2011 Annual Research Report
  • [Presentation] Transient proliferation of proanthocyanidin-accumulating cells on the epidermal apex contributes to highly aluminum-resistant root elongation in camphor tree2012

    • Author(s)
      大澤 裕樹
    • Organizer
      第123回日本森林学会大会(奨励賞受賞講演)
    • Place of Presentation
      宇都宮大学(栃木県)
    • Related Report
      2011 Annual Research Report
    • Invited
  • [Presentation] 木本性種の根端細胞におけるプロアントシアニジン局在の細胞学的解析2012

    • Author(s)
      大澤裕樹 ・遠藤いず貴・丹下健
    • Organizer
      第123回日本森林学会大会
    • Place of Presentation
      宇都宮大学(栃木県)
    • Related Report
      2011 Annual Research Report
  • [Remarks] 東京大学造林学研究室

    • URL

      http://silva.fr.a.u-tokyo.ac.jp/

    • Related Report
      2011 Annual Research Report

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Published: 2011-04-06   Modified: 2019-07-29  

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