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Regulation of Dry Matter Production Process in Response to Changes in Photosynthetic Source-Sink Balance by Environ-mental factor

Research Project

Project/Area Number 02454003
Research Category

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

Allocation TypeSingle-year Grants
Research Field 生態学
Research InstitutionHirosaki University

Principal Investigator

SAWADA Shinichi  Hirosaki Univ. Fac.,Sci. Professor, 理学部, 教授 (70106839)

Co-Investigator(Kenkyū-buntansha) ARAKAWA O  Hirosaki Univ. Fac.,Agr. Asso,Prof., 農教部, 助教授 (70184265)
SAITO M  Morioka Univ. Jun.Colle. Asso.Prof., 短期大学部, 助教授 (70133254)
Project Period (FY) 1990 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 1992: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1991: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1990: ¥4,100,000 (Direct Cost: ¥4,100,000)
Keywordsphotosynthesis / source / sink mechanism / dry matter production / environmental factor
Research Abstract

Soybean (Glycine max Merr. cv. Tsurunoko) plants were grown in pots placed under a sufficient light condition in a phytotron. Photosynthetic sink capacity in the plants was limited by removing flower buds and stopping formation of pods which were main sink organs at reproductive stage (sink-limited plants). (1) Ratios of leaf area to leaf weight and of leaf weight to non-photosynthetic organs (ratios of source organs to sink organs) of the sink-limited plants were larger than those of the control plants. (2) By removing flower buds, photosynthetic activity successively lowered with increasing sucrose content in leaves. Negative correlations existed between photosynthetic activity and sucrose content in the sink limited plants. (3) In the sink-limited plants, the activity of RuBPcase significantly lowered according to lowering of photosynthetic activity. This lowered activity was perfectly recovered with addition of CO_2 and Mg^<2+>. (4) The RuBP content in leaves of the sink-limited plants largely decreased with lowering of photosynthetic activity.
It is concluded that the results obtained from the sink-limited plants prepared by removing flower buds are consistent with the those which were observed in the source-sink model plants when the source/sink balance was altered (sawada et al., 1986, 1987ab, 1989, 1990, 1992).

Report

(4 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • 1990 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] Shinichi Sawada: "Regulation of RuBPcase activity by inorganic orthophosphate in single-rooted soybean leaves in response to changes in the source/sink balance." Plant and Cell Physiology. 33. 943-949 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Shinichi Sawada: "Participations of inorganic phosphate in regulation of RuBPcase activity by change in source/sink balance in single-rooted soybean leaves." Proceedings of IX International Congress on Photosynthesis.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Shinichi Sawada: "Ecotypic differentiation of dry matter production processes in relation to survivorship and reproductive potential in Plantago asiatica.L.population along climatic gradients." Journal of Ecology.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] S.Sawada: "Regulation of RuBPcase activity by inorganic ortho-phosphate in single-rooted soybean leaves in response to changes in the source/sink balance." Plant & Cell Physiol. 33. 943-949 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] S.Sawada: "Participations of inorganic phosphate in regulation of RuBPcase activity by change in source/sink balance in single-rooted soybean leaves." Proceedings of IX International Congress on Photo-synthesis.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] S.Sawada: "Ecotypic differentiation of dry matter production processes in relation to survivorship and reproductive potential in Plantago asiatica L. population along climatic gradients." Func.Ecol.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Shinichi Sawada: "Regulation of RuBPcase activity by inorganic orthophosphate in single-rooted soybean leaves in response to changes in the source/sink balance." Plant and Cell Physiology. 33. 943-949 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Shinichi Sawada: "Participations of inorganic phosphate in regulation of RuBPcase activity by change in source/sink balance in single-rooted soybean leaves." Proceedings of IX International Congrtess on Photosynthesis.

    • Related Report
      1992 Annual Research Report
  • [Publications] Shinichi Sawada: "Ecotypic differentiation of dry matter production processes in relation to survivorship and reproductive potential in Plantago asiatica L. population along climatic gradients." Journal of Ecology.

    • Related Report
      1992 Annual Research Report
  • [Publications] Shinichi Sawada: "Regulation of RuBPcase activity by inorganic or thophosphate in singーrooted soybean leaves in response to changes in the source/sink balance" Plant and Cell Physiology.

    • Related Report
      1991 Annual Research Report
  • [Publications] Shinichi Sawada: "Participations of inorganic phosphate in regulation of RuBPcase activity by change in source/sink balance in singleーrooted soybean leaves" Proceedings of IX International Congrtess on Photosythesis.

    • Related Report
      1991 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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