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Physiological basis of the regulation of seedling emergence of rice plant

Research Project

Project/Area Number 10556004
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section展開研究
Research Field 作物学
Research InstitutionTHE UNIVERSITY OF TOKYO

Principal Investigator

AKITA Shigemi  Grad. Sch. Agr. Life Sci. Agr. & Env. Bio. Professor, 大学院・農学生命科学研究科, 教授 (10251498)

Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥12,600,000 (Direct Cost: ¥12,600,000)
Fiscal Year 2000: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1999: ¥4,900,000 (Direct Cost: ¥4,900,000)
Fiscal Year 1998: ¥5,400,000 (Direct Cost: ¥5,400,000)
Keywordsamylase / seedling emergence / germination / coleoptile / rice plant / direct seeding / expansin
Research Abstract

Traits related with the seedling emergence under flooded condition which is required for the stabilized direct seeding of rice were studied. Isoform H of Amylase which is encoded with Ramy 3D gene was identified as one of the most limiting step for the decomposition of starch under flooded condition both by northern blotting and by in situ hybridization methods. Besides, the involvement of alchohol dehydrogenase in the regulation of seedling emergence were examined. However, the role of ADH was not always in parallel with the seeding emergence under flooded condition and the participation of other limiting steps was suggested. As the possible factors for the regulation of coleoptile elongation which is indispensable for the seedling emergence under flooded condition, the role of expansin was studied. Two isoforms of expansin was identified as the possible factors for the regulation of coleoptile length under flooded condition. Thus the participation of at least 3 major limiting steps was elucidated in the regulation process of seedling emergence of rice under flooded condition.

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] Akita,S.,B.S.Yoon and N.Kabaki: "Relationship between Seedling Emergence Rate and Embryo Weight of Rice under Low-Temperature and Submerged Soil Condition."Jpn.J.Crop.Sci.. 67. 318-322 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Huang,J.,J.Yamaguchi & S.Akita: "Changes in α-Amylase Isoforms during Emergence of Rice in Submerged Soil."Plant Prod.Sci.. 2(1). 12-13 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Huang,J.,K.Toyofuku,J.Yamaguchi & S.Akita: "Expression of α-Amylase Isoforms and the RAmy1A Gene in Rice (Oryza sativa L.) during Seed Germination and its Relationship with Coleoptile Length in Submerged Soil."Plant Prod.Sci.. 3(1). 32-37 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Huang,J.,T.Takano & S.Akita: "Expression of α-expansin genes in young seedlings of rice (Oryza sativa L.)"Planta. 211. 467-473 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Huang,J.,J.Yamaguchi & S.Akita: "Expression of the α-Amylase Gene RAmy3D in Rice (Oryza sativa L.) under Aerobic,Hypoxic and Anoxic Conditions."Plant Prod.Sci.. 3(3). 213-218 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Akita, S., B.S.Yoon & N.Kabaki: "Relationship between Seedling Emergence Rate and Embryo Weight of Rice under Low Temperature and Submerged Soil Condition."Jpn.J.Crop Sci.. 67. 318-322 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Huang.J., J.Yamaguchi & S.Akita: "Changes in α-Amylase Isoforms during Emergence of Rice in Submerged Soil."Plant Prod.Sci.. 2. 12-13 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Huang, J., K.Toyofuku, J.Yamaguchi & S.Akita: "Expression of α-Amylase Isoforms and the RAmy1A Gene in Rice (Oryza sativa L.) during Seed Germination and its Relationship with Coleoptile Length in Submerged Soil."Plant Prod.Sci.. 3. 32-37 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Huang, J., T.Takano & S.Akita: "Expression of α-expansin genes in young seedlings of rice (Oryza sativa L.)"Planta. 211. 467-473 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Huang, J., J.Yamaguchi & S.Akita: "Expression of the α-Amylase Gene RAmy3D in Rice (Oryza sativa L.) under Aerobic, Hypoxic and Anoxic Conditions."Plant Proc.Sci.. 3. 213-218 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Huang,J.,T.Takano & S.Akita: "Expression of α-expansin genes in young seedlings of rice (Oryza Sativa L.)"Planta. 211. 467-473 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Huang,J.,J.Yamaguchi & S.Akita: "Expression of the α-Amylase Gene RAmy3D in Rice (Oryza sativa L.) under Aerobic, Hypoxic and Anoxic Conditions."Plant Prod.Sci.. 3. 213-218 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Huang,J.,J.Yamaguchi and S.Akita: "Changes in α-Amylase Isoforms during emergence of rice (Oryza Sativa L.) in submerged soil"Plant Prod.Sci.. 2(1). 12-13 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Huang,J.,K.Toyofuku,J.Yamaguchi and S.Akita: "Expression of α-amylase isoforms and the RAmylA gene in rice during seed germination in submerged soil"Plant Prod.Sci.. 3(1). 32-37 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Huang,J.,J.Yamaguchi and S.Akita: "Ramy3D gene expression of α-amylase in rice (Oryza sativa L.) under aerobic, hypoxic and anoxic conditions"Plant Prod.Sci.. 3(in press). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Akita,S.,B.S.Yoon and N.Kabaki: "Relationship between seedling emergence rate and embryo weight of rice under low-temperature and submerged soil condition." Jpn.J.Crop Sci.67. 318-322 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Huang,J.,J.Yamaguchi and S.Akita: "Changes in amylase isoforms during emergence of rice from submerged soil." Plant Prod.Sci.(in press). (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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