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2001 Fiscal Year Final Research Report Summary

Molecular mechanism for the inhibition of photosynthesis by UV and excess photon energy and its proteshon

Research Project

Project/Area Number 12440230
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 植物生理
Research InstitutionFukuyama University

Principal Investigator

ASADA Kozi  Dept. Biotechnology, Fukuyama Univ, professor, 工学部, 教授 (50027182)

Co-Investigator(Kenkyū-buntansha) OGAWA Kenichi  Inst, Biology, Okayama Aes, Fellous, 所長
HARAGUCHI Hiroyuki  Dept, Biotechnology, Fukuyama Univ., Associate Professor, 工学部, 助教授 (10198905)
Project Period (FY) 2000 – 2001
Keywordsultra-violet light / ercess photon energg / singlet oxggen / watev-water cycle / 3eta-crystallin / photoinhibition / blue-grean flworescauce / ascorbate peroxidase
Research Abstract

The sunlight is essential for plant growth, but its UV components inhibit photosynthesis. Even the photosynthetically-essential visible components also produces reactive species of oxygen (ROS) and causes the photoinhibition, when leaves are exposed to sunlight intensities in excess of that required for CO_2-fixation. In the present research, the molecular mechanisms of photoinhibition and its protection have been studied on the following topics. 1) Ascorbate peroxidase is the primary target molecules of ROS to induce photoinhibition, 2) Enzymatic properties and physiological functions of zeta-crystallin protein of plants, 3) Monodehydroascorbate reductase is able to catalyze also the reduction of phenoxyl radicals, 4) Induced biosynthesis of blue-green fluorescence components by UV irradiation and its cellular localization, 5) Characteristic properties of the cyclic electron transport around PSI, as revealed by redox change of P700, 6) Detection of singlet oxygen photoproduced in leaf cells, 7) Physiological functions of the water-water cycle in chloroplasts and Zooxanthelle.

  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Asada, K.: "The water-water cycle as alternative photon and election sinks"Phil, Trans, Roy, Soc, London, β. 355. 1419-1431 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mano, J., Babiychnk, E.et al.: "Diamide oxidoreductase activity in Arabidopsis thaliana Pl Zeta-crystallin"Eur.J.Blochem.. 267. 3661-3671 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mano, J., Yoon, H-J et al.: "Crgstallization and preliminary X-ray crystallographic analysis of NADPl-liquinone oxidoredatasc"Biochim.Biophys.Acta. 279. 949-954 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Mano, J., Ohno, C.et al.: "Choloroplastic ascorhate peroxides is the primary target of methylviologen-lnduced photoox dative stress"Biochim.Biophys.Acta. 1504. 275-287 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Miyake, C., Asada, K.: "The water-water cycle in algae"Photosynthesis and Respiration in Algue. (印刷中). (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 浅田浩二: "植物の葉はどうして太陽光の下で緑を保っているのか?"マテリアル学会誌. 13. 114-122 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Asada, K.: "The water-water cycle as alternative photon and electron sinks"Phil. Trans. Roy. Soc. London B. 355. 1419-1431 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mano, J. Babiychuk, E. Belles-Boix, E. Hiratake, J. Kimura, A. Inze, D. Kushnir, S. and Asada, K: "A novel NADPH : diamide oxidoreductase activity in arabidopsis thaliana P1-crystallin"Eur. J. Biochem.. 267. 3661-3671 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mano, J. Yoon, H-J. Asada, K. Babiychuk, E. Inze, D. and Mikami, B: "Crystallization and preliminary X-ray crystallographic analysis of NADPH : quinone oxidoreducatase, a plant-crystallim."Biochim. Biophys. Acta. 1480. 374-376 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Sakihama, Y. Mano, J. Sano, S. Asada, K. and Yamasaki, H.: "Reduction of phenoxyl radicals mediated by monodehydroascorbate reductase"Biochem. Biophys. Res. Commun. 279. 949-954 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mano, J. Ohno, C. Domae, Y. and Asada, K: "Chloroplastic ascorbate peroxidase is the primary target of methylviologen-induced photooxidative stress in spinach leaves : its relevance to monodehydro-ascorbate detected with in vivo ESR"Biochim. Biophys. Acta. 1504. 275-287 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Mano, J. Belles-Boix, E. Babiychuk, E. Asada, K. Van Montagu, M. Inze, D. Kushnir, S. and Slooten, L: "Overexpressed P1-crystallin, a putative antioxidant protein, constitutes an oxygen-dependent alternative electron sink in leaves"Plant physiol. (submitted). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideg, E. Jahasz, M. Bornman, J. and Asada, K: "The distribution and possible orgin of blue-green fluorescence in control and stressed barley leaves"Photochem. Photobiol. (submitted). (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Miyake, C. and Asada, K: "The water-water cycle in algae"In larkum, A. W. D. (ed) Photosynthesis and Respiration in Algae, Kluwer Academic Publ., Dordrecht. (in press). (2002)

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

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Published: 2003-09-17  

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