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Mechanism of downregulation of photosystem I content under high-light conditions in the cyanobacterium Synechocystis sp PCC 6803
https://sucra.repo.nii.ac.jp/records/13585
https://sucra.repo.nii.ac.jp/records/13585127f857b-6f71-4bed-a2b1-6ee14529338f
名前 / ファイル | ライセンス | アクション |
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A1002878.pdf (966.7 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2009-09-15 | |||||
タイトル | ||||||
タイトル | Mechanism of downregulation of photosystem I content under high-light conditions in the cyanobacterium Synechocystis sp PCC 6803 | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Muramatsu, Masayuki
× Muramatsu, Masayuki× Sonoike, Kintake× 日原, 由香子 |
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著者 ローマ字 | ||||||
Muramatsu, Masayuki | ||||||
著者 ローマ字 | ||||||
Sonoike, Kintake | ||||||
著者 ローマ字 | ||||||
Hihara, Yukako | ||||||
著者 所属 | ||||||
著者 所属 | ||||||
著者 所属 | ||||||
埼玉大学大学院理工学研究科生命科学部門 | ||||||
著者 所属(別言語) | ||||||
Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo | ||||||
著者 所属(別言語) | ||||||
Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo | ||||||
著者 所属(別言語) | ||||||
Department of Biochemistry and Molecular Biology, Graduate School of Science and Engineering, Saitama Universit | ||||||
書誌情報 |
Microbiology 巻 155, 号 Part 3, p. 989-996, 発行日 2009 |
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年月次 | ||||||
2009-3 | ||||||
出版者名 | ||||||
出版者 | Society for General Microbiology | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 13500872 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1099/mic.0.024018-0 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Downregulation of photosystem I (PSI) content is an essential process for cyanobacteria to grow under high-light (HL) conditions. In a pmgA (sll 968) mutant of Synechocystis sp. PCC 6803, the levels of PSI content, chlorophyll and transcripts of the psaAB genes encoding reaction-centre subunits of PSI could not be maintained low during HL incubation, although the causal relationship among these phenotypes remains unknown. In this study, we modulated the activity of psaAB transcription or that of chlorophyll synthesis to estimate their contribution to the regulation of PSI content under HL conditions. Analysis of the psaAB-OX strain, in which the psaAB genes were overexpressed under HL conditions, revealed that the amount of psaAB transcript could not affect PSI content by itself. Suppression of chlorophyll synthesis by an inhibitor, laevulinic acid, in the pmgA mutant revealed that chlorophyll availability could be a determinant of PSI content under HL. It was also suggested that chlorophyll content under HL conditions is mainly regulated at the level of 5-aminolaevulinic acid synthesis. We conclude that, upon the shift to HL conditions, activities of psaAB transcription and of 5-aminolaevulinic acid synthesis are strictly downregulated by regulatory mechanism(s) independent of PmgA during the first 6 h, and then a PmgA-mediated regulatory mechanism becomes active after 6 h onward of HL incubation to maintain these activities at a low level. | |||||
注記 | ||||||
内容記述タイプ | Other | |||||
内容記述 | This is a pre-copy-editing, author-produced PDF of an article accepted for publication in MICROBIOLOGY-SGM following peer review. The definitive publisher-authenticated version American Society for Microbiology, MICROBIOLOGY-SGM 155 (2009), 989-996; DOI 10.1099/mic.0.024018-0 online at: http://mic.sgmjournals.org/cgi/content/abstract/155/3/989 | |||||
版 | ||||||
[著者版] | ||||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
資源タイプ | ||||||
内容記述タイプ | Other | |||||
内容記述 | text | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
作成日 | ||||||
日付 | 2009-09-15 | |||||
日付タイプ | Created | |||||
アイテムID | ||||||
A1002878 |