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2000 Fiscal Year Final Research Report Summary

Ecophysiology of energy budget of higher plant respiration with special reference to involvement of the cyanide-resistant pathway

Research Project

Project/Area Number 10440235
Research Category

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

Allocation TypeSingle-year Grants
Section一般
Research Field 生態
Research InstitutionOsaka University

Principal Investigator

TERASHIMA Ichiro  Osaka University, Graduate School of Science, Professor, 大学院・理学研究科, 教授 (40211388)

Co-Investigator(Kenkyū-buntansha) NOGUCHI Ko  Osaka University, Graduate School of Science, Assistant Professor, 大学院・理学研究科, 助手 (80304004)
Project Period (FY) 1998 – 2000
Keywordsrespiration / cyanide-resistant / stable isotope / respiratory energy cost / temperature acclimation
Research Abstract

Mitochondria in higher plants possess the alternative pathway in addition to cytochrome pathway. Because the alternative pathway does not translocate proton, engagement of the alternative pathway decreases the ATP/O_2 ratio. Thus, estimation of engagement of the alternative pathway is important to understand energy budget of the plants. We have already constructed a system that separately determines the rate of electron flow through these two pathways. The purpose of this study is to conduct ecophysiological studies using this system. Four main results are as follows.
1. Differences in respiratory regulation mechanisms between sun and shade plants were clarified. Although there is potential activity of the alternative pathway, it is little used.
2. ATP production rate in the leaf is estimated based on the rates of electron flow in the two pathways. We also estimated how ATP is used.
3. Nitrogen nutrition stress was shown to enhance the engagement of the alternative pathway.
4. Effects of growth temperature on root respiration rate were studied for four Allium species. Root respiration rate were well correlated with nitrogen uptake rate.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Noguchi,Ko: "Activities of the cyanide-resistant respiratory pathway in leaves of sun and shade species"Australian Journal of Plant Physiology. 28. 27-35 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Noguchi,Ko: "Costs of protein turnover and carbohydrate export cost in sun and shade leaves"Australian Journal of Plant Physiology. 28. 37-47 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Noguchi,Ko: "Effects of changes in growth light environment on respiration in the night time"Plant, Cell and Environment. (in press). (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 野口航: "渡辺昭,篠崎一雄,寺島一郎 監修「植物の環境応答」「夜の葉の呼吸に関する生理学と経済学」"秀潤社. 125-128(216) (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 野口航: "駒嶺穆 監修 寺島一郎 編 植物の環境応答「環境応答のコスト」"朝倉書店(印刷中). (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Noguchi, K., C.-S.Go, I.Terashima, S.Ueda and T.Yoshinari: "Activities of the cyanide-resistant respiratory pathway in leaves of sun and shade species."Australian Journal of Plant Physiology. 28. 27-35 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Noguchi, K., C.-S.Go, I.Terashima, S.Ueda, S.I.Miyazawa and T.Yoshinari: "Costs of protein turnover and carbohydrate export cost in sun and shade leaves."Australian Journal of Plant Physiology. 28. 37-47 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Noguchi, K., N.Nakajima and I.Terashima: "Effects of changes in growth light environment on respiration in the night time."Plant, Cell and Environment. (in press). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Noguchi, Ko: "Physiology and Economy of night respiration."In Responses of plants to environmental factors (edited by A.Watanabe, K.Shinozaki and I.Terashima). pp.125-128.Shujunsha, Tokyo. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Noguchi, Ko: "Cost of environmental response"In Responses to environmental factors (edited by I.Terashima and A.Komamine).Asakura shoten, Tokyo (in press). (2001)

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

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Published: 2002-03-26  

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