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Improvement of salinity tolerance in plants through fine-tuning of novel sodium transporters(Fostering Joint International Research)

Research Project

Project/Area Number 15KK0283
Research Category

Fund for the Promotion of Joint International Research (Fostering Joint International Research)

Allocation TypeMulti-year Fund
Research Field Plant nutrition/Soil science
Research InstitutionHiroshima University

Principal Investigator

Ueda Akihiro  広島大学, 生物圏科学研究科, 准教授 (10578248)

Research Collaborator Singh Rakesh Kumar  国際イネ研究所, 植物育種部門, 主任研究員
Sreewongchai Tanee  カセサート大学, 農学部, 准教授
Project Period (FY) 2016 – 2018
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
Keywords塩ストレス / イネ / ナトリウム / ナトリウム輸送
Outline of Final Research Achievements

Accumulation of excess salts causes salinity stress. Mechanisms of salinity tolerance including compartmentalization of sodium into vacuoles, extrusion of sodium to outside of cells, and sodium exclusion from leaves have been well-characterized in recent extensive researches, however, it is still unknown how sodium comes in roots from salinized soils. Therefore, objective of this research is set to study how plants absorb sodium from soils in roots. Through collaborative research with International Rice Research Institute and Kasetsart University, divergent rice varieties were screened based on sodium concentration in roots under salinity stress. Using selected rice varieties, we have developed rice populations for genetic analysis and have characterized these varieties using physiological and molecular biological analyses to discuss why these rice varieties have different ability to absorb sodium in roots.

Academic Significance and Societal Importance of the Research Achievements

乾燥地や半乾燥地には塩害土壌が広がっているため、塩害に強い耐塩性植物を作出することはこれらの土地での農作物生産性の向上に重要である。本研究では、植物がどのようにして過剰に体内に蓄積されると有害となるナトリウムを土壌から吸収するのかに焦点をあてて研究を行った。様々なイネ品種を用いて根のナトリウム濃度が異なる品種の選抜を行った。根のナトリウム濃度が高い品種や低い品種の特徴を調べるとともに、塩の取り込みに関わる遺伝子群の発現解析を行うことで、イネの根がナトリウムを取り込む仕組みについて考察を行った。根のナトリウム取り込みを抑制した品種を創出することで、より塩害に強いイネを作出するための基盤を築いた。

Report

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

    (14 results)

All 2018 2017 2016

All Int'l Joint Research (2 results) Journal Article (5 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 5 results) Presentation (7 results)

  • [Int'l Joint Research] カセサート大学(タイ)2017

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] 国際イネ研究所(フィリピン)2016

    • Year and Date
      2016-09-15
    • Related Report
      2018 Annual Research Report
  • [Journal Article] Apigenin pretreatment enhances growth and salinity tolerance of rice seedlings.2018

    • Author(s)
      Mekawy AMM, Abdelaziz MN, Ueda A
    • Journal Title

      Plant Physiology and Biochemistry

      Volume: 130 Pages: 94-104

    • DOI

      10.1016/j.plaphy.2018.06.036

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Differential responses of two Egyptian barley (Hordeum vulgare L.) cultivars to salt stress.2018

    • Author(s)
      Elsawy HIA, Mekawy AMM, Elhity MA, Abdel-Dayem SM, Abdelaziz MN, Assaha DVM, Ueda A, Saneoka H
    • Journal Title

      Plant Physiology and Biochemistry

      Volume: 127 Pages: 425-435

    • DOI

      10.1016/j.plaphy.2018.04.012

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A salinity tolerant japonica cultivar has Na+ exclusion mechanism at leaf sheaths through the function of a Na+ transporter OsHKT1;4 under salinity stress2018

    • Author(s)
      Wangsawang T, Chuamnakthong S, Kohnishi E, Sripichitt P, Sreewongchai T, Ueda A
    • Journal Title

      Journal of Agronomy and Crop Science

      Volume: 204 Issue: 3 Pages: 274-284

    • DOI

      10.1111/jac.12264

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Characterization of type 3 metallothionein-like gene ( OsMT-3a ) from rice, revealed its ability to confer tolerance to salinity and heavy metal stresses2018

    • Author(s)
      Mekawy Ahmad Mohammad M.、Assaha Dekoum V.M.、Munehiro Riko、Kohnishi Eri、Nagaoka Toshinori、Ueda Akihiro、Saneoka Hirofumi
    • Journal Title

      Environmental and Experimental Botany

      Volume: 147 Pages: 157-166

    • DOI

      10.1016/j.envexpbot.2017.12.002

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Role of Na+ and K+ Transporters in Salt Stress Adaptation in Glycophytes2017

    • Author(s)
      Assaha Dekoum V. M.、Ueda Akihiro、Saneoka Hirofumi、Al-Yahyai Rashid、Yaish Mahmoud W.
    • Journal Title

      Frontiers in Physiology

      Volume: 8 Pages: 1-19

    • DOI

      10.3389/fphys.2017.00509

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 鉄濃度の変化がイネの耐塩性に及ぼす影響2018

    • Author(s)
      幸西絵梨,Thanakorn Wangsawang,Tanee Sreewongchai,実岡寛文,上田晃弘
    • Organizer
      日本土壌肥料学会神奈川大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 塩ストレスが塩生植物の生育と養分吸収に及ぼす影響2018

    • Author(s)
      大戸貴裕,実岡寛文,上田晃弘
    • Organizer
      日本土壌肥料学会神奈川大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Physiological responses to saline-alkaline stress in rice2018

    • Author(s)
      Sumana Chuamnakthong, Hirofumi Saneoka, Akihiro Ueda
    • Organizer
      日本土壌肥料学会関西支部講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 耐塩性ジャポニカイネ品種の選抜とNa蓄積特性2018

    • Author(s)
      南平眞実,川下真奈,実岡寛文,上田晃弘
    • Organizer
      日本農芸化学会中四国支部第50回記念講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] イネの耐塩性に及ぼす鉄過剰処理の影響2018

    • Author(s)
      幸西絵梨,Thanakorn Wangsawang,Tanee Sreewongchai,実岡寛文,上田晃弘
    • Organizer
      日本農芸化学会中四国支部第50回記念講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Amelioration of salinity stress by ascorbic acid pretreatment in rice2017

    • Author(s)
      Sumana Chuamnakthong, Hirofumi Saneoka, Akihiro Ueda
    • Organizer
      2017年度日本土壌肥料学会関西支部講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Apigenin pretreatment enhances salinity tolerance of rice seedlings2017

    • Author(s)
      Ahmad Mohammad M. Mekawy, Hirofumi Saneoka, Akihiro Ueda
    • Organizer
      2017年度日本土壌肥料学会関西支部講演会
    • Related Report
      2017 Research-status Report

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Published: 2016-10-04   Modified: 2020-03-30  

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