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1993 Fiscal Year Final Research Report Summary

Regulation and Acclimation of C_2-photosynthesis in High CO_2

Research Project

Project/Area Number 04660064
Research Category

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

Allocation TypeSingle-year Grants
Research Field 土壌・肥料
Research InstitutionTohoku University

Principal Investigator

MAKINO Amane  Tohoku Univ., Faculty of Agriculture, Assistant Professor, 農学部, 助手 (70181617)

Project Period (FY) 1992 – 1993
KeywordsGas Exchange / Photosynthesis / High CO_2 / Nitrogen Nutrition / Acclimation / C_3 Plants / Rubisco
Research Abstract

The photosynthetic gas-exchange rates and their underlying biochemical properties were examined in young, fully expanded leaves of rice, wheat and pea. The plants were grown hydroponically under different CO_2 concentrations (35 Pa and 70 Pa). Enhanced CO_2 did not affect Rubisco content, carbonic anhydrase activity and electron transport capacity for a given leaf nitrogen content. However, it affected the light-saturated photosynthetic CO_2 response curve. The relative ratio of the initial slope to the CO_2-saturated photosynthesis decreased in the plants grown under high CO_2. This was mainly caused by an decrease in the initial slope for a given Rubisco content with rising CO_2 concentrations. This suggests that long-term CO_2 enhancement leads to an decrease in the CO_2 transfer conductance inside a leaf.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] Makino et al.: "Distinctive Responses of Ribulose-1,5-bisphosphate Carboxylase and Carbonic Andydrase in Wheat Leaves to Nitrogen Nutrition and their Possible Relationships to CO_2-Transfer Resistance" Plant Physiology. 100. 1737-1743 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Makino: "Biochemistry of C_3-photosynthesis in High CO_2" Journal of Plant Research. 107(印刷中). (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Makino et al.: "Responses of Ribulose-1,5-bisphosphate Carboxylase,Cytochrpmef,and Sucrose Synthesis Enzymes in Rice Leaves to Leaf Nitrogen and Their Relationships to Photosynthesis" Plant Physiology. 105(印刷中). (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Makino: "Distictive Responses of Ribulose 1,5 bis phosphate Carboxylase and Carbonic Anhydrase in Wheat Leaves to Nitrogen Nutrition and Their Possible Relationships to CO_2-transfer Resistance" Plant Physiology. 100. 1737-1743 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Makino: "Biochemistry of C_3-photosynthesis in High CO_2" Journal of Plant Research. (in press). (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Makino: "Responses of Ribulose-1,5-bisphosphate Carboxilase, cytochrome f, and Sucrose Synthesis Enzymes in Rice Leaves to Leaf Nitrogen and Their Relationships to Photosynthesis" Plant Physiology. 105. (in press) (1994)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1995-03-27  

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