The Mutant of <i>sll1961</i>, Which Encodes a Putative Transcriptional Regulator, Has a Defect in Regulation of Photosystem Stoichiometry in the Cyanobacterium <i>Synechocystis</i> sp. PCC 6803

• Tamaki Fujimori

  Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, Kashiwa-shi, Chiba 277–8562, Japan (T.F., M.H., H.S., H.A., K.S.); and Department of Biochemistry and Molecular Biology, Faculty of Science, Saitama University, Saitama-shi, Saitama 338–8570, Japan (M.M., Y.H.)

• Mieko Higuchi

  Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, Kashiwa-shi, Chiba 277–8562, Japan (T.F., M.H., H.S., H.A., K.S.); and Department of Biochemistry and Molecular Biology, Faculty of Science, Saitama University, Saitama-shi, Saitama 338–8570, Japan (M.M., Y.H.)

• Hanayo Sato

  Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, Kashiwa-shi, Chiba 277–8562, Japan (T.F., M.H., H.S., H.A., K.S.); and Department of Biochemistry and Molecular Biology, Faculty of Science, Saitama University, Saitama-shi, Saitama 338–8570, Japan (M.M., Y.H.)

• Hiroshi Aiba

  Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, Kashiwa-shi, Chiba 277–8562, Japan (T.F., M.H., H.S., H.A., K.S.); and Department of Biochemistry and Molecular Biology, Faculty of Science, Saitama University, Saitama-shi, Saitama 338–8570, Japan (M.M., Y.H.)

• Masayuki Muramatsu

  Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, Kashiwa-shi, Chiba 277–8562, Japan (T.F., M.H., H.S., H.A., K.S.); and Department of Biochemistry and Molecular Biology, Faculty of Science, Saitama University, Saitama-shi, Saitama 338–8570, Japan (M.M., Y.H.)

• Yukako Hihara

  Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, Kashiwa-shi, Chiba 277–8562, Japan (T.F., M.H., H.S., H.A., K.S.); and Department of Biochemistry and Molecular Biology, Faculty of Science, Saitama University, Saitama-shi, Saitama 338–8570, Japan (M.M., Y.H.)

• Kintake Sonoike

  Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, Kashiwa-shi, Chiba 277–8562, Japan (T.F., M.H., H.S., H.A., K.S.); and Department of Biochemistry and Molecular Biology, Faculty of Science, Saitama University, Saitama-shi, Saitama 338–8570, Japan (M.M., Y.H.)

抄録

In acclimation to changing light environments, photosynthetic organisms modulate the ratio of two photosynthetic reaction centers (photosystem I [PSI] and photosystem II). One mutant, which could not modulate photosystem stoichiometry upon the shift to high light, was isolated from mutants created by random transposon mutagenesis. Measurements of chlorophyll fluorescence and analysis of the reaction center subunits of PSI through western blotting in this mutant revealed that the content of PSI could not be suppressed under high-light condition. In the mutant, transposon was inserted to the sll1961 gene encoding a putative transcriptional regulator. DNA microarray analysis revealed that the expression of sll1773 was drastically induced in the sll1961 mutant upon exposure to high light for 3 h. Our results demonstrate that a transcriptional regulator, Sll1961, and its possible target proteins, including Sll1773, may be responsible for the regulation of photosystem stoichiometry in response to high light.

収録刊行物

• Plant Physiology

  Plant Physiology 139 (1), 408-416, 2005-08-19

  Oxford University Press (OUP)

キーワード

• Plant Science
• Genetics
• Physiology

詳細情報

• CRID: 1362825895775592832
• NII論文ID: 80017520582
• DOI: 10.1104/pp.105.064782
• ISSN: 15322548
• ISSN: 00320889
• Web Site: http://academic.oup.com/plphys/article-pdf/139/1/408/37828655/plphys_v139_1_408.pdf
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