Photosynthetic control of chloroplast gene expression
Redox chemistry—the transfer of electrons or hydrogen atoms—is central to energy conversion in respiration and photosynthesis. In photosynthesis in chloroplasts, two separate, light-driven reactions, termed photosystem I and photosystem II, are connected in series by a chain of electron carriers 1 ,...
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| Veröffentlicht in: | Nature (London) 1999-02, Vol.397 (6720), p.625-628 |
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| creator | Pfannschmidt, Thomas Nilsson, Anders Allen, John F. |
| description | Redox chemistry—the transfer of electrons or hydrogen atoms—is central to energy conversion in respiration and photosynthesis. In photosynthesis in chloroplasts, two separate, light-driven reactions, termed photosystem I and photosystem II, are connected in series by a chain of electron carriers
1
,
2
,
3
. The redox state of one connecting electron carrier, plastoquinone, governs the distribution of absorbed light energy between photosystems I and II by controlling the phosphorylation of a mobile, light-harvesting, pigment–protein complex
4
,
5
. Here we show that the redox state of plastoquinone also controls the rate of transcription of genes encoding reaction-centre apoproteins of photosystem I and photosystem II. As a result of this control, the stoichiometry between the two photosystems changes in a way that counteracts the inefficiency produced when either photosystem limits the rate of the other. In eukaryotes, these reaction-centre proteins are encoded universally within the chloroplast. Photosynthetic control of chloroplast gene expression indicates an evolutionary explanation for this rule: the redox signal-transduction pathway can be short, the response rapid, and the control direct. |
| doi_str_mv | 10.1038/17624 |
| format | Article |
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1
,
2
,
3
. The redox state of one connecting electron carrier, plastoquinone, governs the distribution of absorbed light energy between photosystems I and II by controlling the phosphorylation of a mobile, light-harvesting, pigment–protein complex
4
,
5
. Here we show that the redox state of plastoquinone also controls the rate of transcription of genes encoding reaction-centre apoproteins of photosystem I and photosystem II. As a result of this control, the stoichiometry between the two photosystems changes in a way that counteracts the inefficiency produced when either photosystem limits the rate of the other. In eukaryotes, these reaction-centre proteins are encoded universally within the chloroplast. Photosynthetic control of chloroplast gene expression indicates an evolutionary explanation for this rule: the redox signal-transduction pathway can be short, the response rapid, and the control direct.</description><identifier>ISSN: 0028-0836</identifier><identifier>EISSN: 1476-4687</identifier><identifier>DOI: 10.1038/17624</identifier><identifier>CODEN: NATUAS</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>Biological and medical sciences ; Cellular biology ; Energy conversion ; Fundamental and applied biological sciences. Psychology ; Gene expression ; Genes ; Humanities and Social Sciences ; letter ; Metabolism ; Molecular and cellular biology ; Molecular genetics ; multidisciplinary ; Photosynthesis ; Photosynthesis, respiration. Anabolism, catabolism ; Plant physiology and development ; Science ; Science (multidisciplinary)</subject><ispartof>Nature (London), 1999-02, Vol.397 (6720), p.625-628</ispartof><rights>Macmillan Magazines Ltd. 1999</rights><rights>1999 INIST-CNRS</rights><rights>Copyright Macmillan Journals Ltd. Feb 18, 1999</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c435t-a533e2c671ca438d8bb02b6849a78b3ebdebdd3aea39845454a6e20ce71fe3653</citedby><cites>FETCH-LOGICAL-c435t-a533e2c671ca438d8bb02b6849a78b3ebdebdd3aea39845454a6e20ce71fe3653</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1038/17624$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1038/17624$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1714810$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Pfannschmidt, Thomas</creatorcontrib><creatorcontrib>Nilsson, Anders</creatorcontrib><creatorcontrib>Allen, John F.</creatorcontrib><title>Photosynthetic control of chloroplast gene expression</title><title>Nature (London)</title><addtitle>Nature</addtitle><description>Redox chemistry—the transfer of electrons or hydrogen atoms—is central to energy conversion in respiration and photosynthesis. In photosynthesis in chloroplasts, two separate, light-driven reactions, termed photosystem I and photosystem II, are connected in series by a chain of electron carriers
1
,
2
,
3
. The redox state of one connecting electron carrier, plastoquinone, governs the distribution of absorbed light energy between photosystems I and II by controlling the phosphorylation of a mobile, light-harvesting, pigment–protein complex
4
,
5
. Here we show that the redox state of plastoquinone also controls the rate of transcription of genes encoding reaction-centre apoproteins of photosystem I and photosystem II. As a result of this control, the stoichiometry between the two photosystems changes in a way that counteracts the inefficiency produced when either photosystem limits the rate of the other. In eukaryotes, these reaction-centre proteins are encoded universally within the chloroplast. Photosynthetic control of chloroplast gene expression indicates an evolutionary explanation for this rule: the redox signal-transduction pathway can be short, the response rapid, and the control direct.</description><subject>Biological and medical sciences</subject><subject>Cellular biology</subject><subject>Energy conversion</subject><subject>Fundamental and applied biological sciences. 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In photosynthesis in chloroplasts, two separate, light-driven reactions, termed photosystem I and photosystem II, are connected in series by a chain of electron carriers
1
,
2
,
3
. The redox state of one connecting electron carrier, plastoquinone, governs the distribution of absorbed light energy between photosystems I and II by controlling the phosphorylation of a mobile, light-harvesting, pigment–protein complex
4
,
5
. Here we show that the redox state of plastoquinone also controls the rate of transcription of genes encoding reaction-centre apoproteins of photosystem I and photosystem II. As a result of this control, the stoichiometry between the two photosystems changes in a way that counteracts the inefficiency produced when either photosystem limits the rate of the other. In eukaryotes, these reaction-centre proteins are encoded universally within the chloroplast. Photosynthetic control of chloroplast gene expression indicates an evolutionary explanation for this rule: the redox signal-transduction pathway can be short, the response rapid, and the control direct.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><doi>10.1038/17624</doi><tpages>4</tpages></addata></record> |
| fulltext | fulltext |
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| ispartof | Nature (London), 1999-02, Vol.397 (6720), p.625-628 |
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| subjects | Biological and medical sciences Cellular biology Energy conversion Fundamental and applied biological sciences. Psychology Gene expression Genes Humanities and Social Sciences letter Metabolism Molecular and cellular biology Molecular genetics multidisciplinary Photosynthesis Photosynthesis, respiration. Anabolism, catabolism Plant physiology and development Science Science (multidisciplinary) |
| title | Photosynthetic control of chloroplast gene expression |
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