• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Mechanism of salt tolerance in wild Oryza species.

Research Project

Project/Area Number 21780015
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Crop science/Weed science
Research InstitutionUniversity of the Ryukyus

Principal Investigator

NAKAMURA Ichiro  琉球大学, 農学部, 助教 (70381209)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2010: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords野生植物資源 / 電子伝達系 / 酸素放出 / ナトリウムイオン / クロロフィル含量 / 野生稲 / 生長 / 光合成速度 / ナトリウムイオン含量 / 発現解析 / 液泡膜
Research Abstract

The dry matter production and physiological response of wild Oryza species(O. latifolia and O. officinalist) to salinity stress were investigated by comparing with check varieties of O. sativa L. cv. Pokkali(salt-tolerant) and O. rufipogon(salt-susceptible). O. officinalis showed resistance to salinity as high as O. latifolia. The degree of decline in dry matter production of each part(root, leaf sheath, leaf blade) was different among the varieties after NaCl treatment. Top leaf Na^+ content per unit of dry-matter under 100mM NaCl condition in O. latifolia and O. officinalis increased 6.0 times and 5.2 times, respectively, as compared with Pokkali. Accumulation pattern of leaf blade Na^+ content in salt tolerant wild Oryza species were different from that in salt tolerance varieties, Pokkali. The wild Oryza species accumulated more Na^+ in lower leaf blade than in upper leaf blade. Carbon assimilation and oxygen evolution rate was examined under salinity conditions. The carbon assimilation rate of the wild Oryza species hardly decreased at 21 day after salt treatment. On the other hand, the oxygen evolution rate increased by salinity stress. The result of photosynthetic activity indicates that wild Oryza species has notable salt tolerance ability.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report

Research Products

(10 results)

All 2012 2011 2010

All Journal Article Presentation

  • [Journal Article] Salinity Effects on Growth Characteristics, Biomass Accumulation and Some Physiological Changes of Torpedograss(Panicum repens L.)2011

    • Author(s)
      Nakamura, I., Hossain Md. A., Akamine H., Nishizawa Y., Tamaki M. and Motomura K.
    • Journal Title

      Trop. Agr. Develop

      Volume: 55(2) Pages: 75-83

    • NAID

      130004952925

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Salinity Effects on Growth Characteristics, Biomass Accumulation and Some Physiological Changes of Torpedograss (Panicum repens L.)2011

    • Author(s)
      Nakaraura, I., Hossain Md.A., Akamine H., Nishizawa Y., Tamaki M., Motomura K.
    • Journal Title

      Trop.Agr.Develop.

      Volume: 55 Pages: 75-83

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] NaClストレスがOryza属4種の光合成明反応系に与える影響2012

    • Author(s)
      西澤優・仲村一郎・モハメドアムザドホサイン・玉城政信
    • Organizer
      日作記
    • Place of Presentation
      東京農工大学
    • Year and Date
      2012-03-29
    • Related Report
      2011 Final Research Report
  • [Presentation] NaClストレスがOryza属4種の光合成明反応系に与える影響2012

    • Author(s)
      西澤優
    • Organizer
      日本作物学会
    • Place of Presentation
      東京農工大学農学部
    • Year and Date
      2012-03-29
    • Related Report
      2011 Annual Research Report
  • [Presentation] 塩ストレス下におけるOryza属5種の乾物生産及び光合成能力2011

    • Author(s)
      西澤優・仲村一郎・赤嶺光・モハメドアムザドホサイン・玉城政信
    • Organizer
      日作記
    • Place of Presentation
      東京農業大学
    • Year and Date
      2011-03-30
    • Related Report
      2011 Final Research Report
  • [Presentation] 塩ストレスがOryza属5種の乾物生産及び光合成に与える影響2011

    • Author(s)
      西澤優
    • Organizer
      日本作物学会
    • Place of Presentation
      神奈川県 東京農業大学
    • Year and Date
      2011-03-30
    • Related Report
      2010 Annual Research Report
  • [Presentation] Oryza属4種の葯培養における培地の検討2010

    • Author(s)
      西澤優・仲村一郎・モハメドアムザドホサイン・玉城政信・本村恵二
    • Organizer
      熱帯農業研究
    • Place of Presentation
      沖縄コンベンションセンター
    • Year and Date
      2010-10-10
    • Related Report
      2011 Final Research Report
  • [Presentation] Oryza属4種の葯培養における培地の検討2010

    • Author(s)
      西澤優
    • Organizer
      日本熱帯農業学会
    • Place of Presentation
      沖縄県コンベンションセンター
    • Year and Date
      2010-10-10
    • Related Report
      2010 Annual Research Report
  • [Presentation] Salt effect on growth characteristics and biomass accumulation of Torpedograss(Panicum repens L.)2010

    • Author(s)
      Hossain Md. A., Nakamura I., Akamine H., Tamaki M. and Motomura K
    • Organizer
      J. Weed Sci. Tech
    • Place of Presentation
      福井県AOSSA
    • Year and Date
      2010-04-11
    • Related Report
      2011 Final Research Report
  • [Presentation] Salt effect on growth characteristics and biomass accumulation of Torpedograss (Panicum repens L.).2010

    • Author(s)
      Md Amzad Hossain
    • Organizer
      日本雑草学会
    • Place of Presentation
      1.福井県AOSSA
    • Year and Date
      2010-04-11
    • Related Report
      2010 Annual Research Report

URL: 

Published: 2009-03-31   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi