effect of pH on the products of photosynthesis in 14CO2 by chloroplast preparations from Acetabularia mediterranea

The effect of pH on the pathways of carbon in photosynthesis was examined in chloroplast preparations from Acetabularia mediterranea. The flow of carbon into a number of photosynthetic intermediates, particularly sucrose, glycine, serine, glycolate, and the insoluble fraction, was strongly influence...

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Veröffentlicht in:	Plant physiology (Bethesda) 1971-06, Vol.47 (6), p.779-783
Hauptverfasser:	Dodd, W.A, Bidwell, R.G.S
Format:	Artikel
Sprache:	eng
Schlagworte:	Carbon Carbon dioxide Chloroplasts Chromatography Glycolates Photosynthesis Plant cells Plants Radioactive decay Radiocarbon
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description	The effect of pH on the pathways of carbon in photosynthesis was examined in chloroplast preparations from Acetabularia mediterranea. The flow of carbon into a number of photosynthetic intermediates, particularly sucrose, glycine, serine, glycolate, and the insoluble fraction, was strongly influenced by pH. At higher pH a much larger portion of the 14C entered intermediates of the glycolate pathway. Although maximal apparent photosynthesis occurred at pH 7.6 to 7.7, cytoplasmic pH was found to be 8.0 to 8.4, using indicators. The pattern of distribution of 14C in intermediates of whole cells was closest to that in chloroplasts at the higher pH range.
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The flow of carbon into a number of photosynthetic intermediates, particularly sucrose, glycine, serine, glycolate, and the insoluble fraction, was strongly influenced by pH. At higher pH a much larger portion of the 14C entered intermediates of the glycolate pathway. Although maximal apparent photosynthesis occurred at pH 7.6 to 7.7, cytoplasmic pH was found to be 8.0 to 8.4, using indicators. 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The flow of carbon into a number of photosynthetic intermediates, particularly sucrose, glycine, serine, glycolate, and the insoluble fraction, was strongly influenced by pH. At higher pH a much larger portion of the 14C entered intermediates of the glycolate pathway. Although maximal apparent photosynthesis occurred at pH 7.6 to 7.7, cytoplasmic pH was found to be 8.0 to 8.4, using indicators. The pattern of distribution of 14C in intermediates of whole cells was closest to that in chloroplasts at the higher pH range.</description><subject>Carbon</subject><subject>Carbon dioxide</subject><subject>Chloroplasts</subject><subject>Chromatography</subject><subject>Glycolates</subject><subject>Photosynthesis</subject><subject>Plant cells</subject><subject>Plants</subject><subject>Radioactive decay</subject><subject>Radiocarbon</subject><issn>0032-0889</issn><issn>1532-2548</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1971</creationdate><recordtype>article</recordtype><recordid>eNotkM1qwzAQhEVpoWnaNyhUL2DQnx3rGELbFAI5JD2blbyqFRzLSMohb1_R9LTDN8zAzh1Z8FqKStSqvScLxopmbasfyVNKJ8YYl1wtSETn0GYaHJ23NEw0D0jnGPqLzemPDiGHdJ0KTz5RP1GuNntBzZXaYQwxzCOkXCI4Q4Tsw5Soi-FM1xYzmMsI0QM9Y-8zxggTwjN5cDAmfPm_S3L8eD9uttVu__m1We8qp2pVGeAapQZmhOw1Kqh71qBVXBuzQtbagkQLyjXAlWPGonbcSlPeFau6b-WSvN5qTymH2M3RnyFeOyUaUfqL_XazHYQOfqJP3fdBlFWYkEqwRstfSHpfhg</recordid><startdate>19710601</startdate><enddate>19710601</enddate><creator>Dodd, W.A</creator><creator>Bidwell, R.G.S</creator><general>American Society of Plant Physiologists</general><scope>FBQ</scope></search><sort><creationdate>19710601</creationdate><title>effect of pH on the products of photosynthesis in 14CO2 by chloroplast preparations from Acetabularia mediterranea</title><author>Dodd, W.A ; Bidwell, R.G.S</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-f454-ba19e39a0b23d9e4a5d06ec419bb7e08ce4a28a4f6a14f0bce9f1c3b548275d83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1971</creationdate><topic>Carbon</topic><topic>Carbon dioxide</topic><topic>Chloroplasts</topic><topic>Chromatography</topic><topic>Glycolates</topic><topic>Photosynthesis</topic><topic>Plant cells</topic><topic>Plants</topic><topic>Radioactive decay</topic><topic>Radiocarbon</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Dodd, W.A</creatorcontrib><creatorcontrib>Bidwell, R.G.S</creatorcontrib><collection>AGRIS</collection><jtitle>Plant physiology (Bethesda)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Dodd, W.A</au><au>Bidwell, R.G.S</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>effect of pH on the products of photosynthesis in 14CO2 by chloroplast preparations from Acetabularia mediterranea</atitle><jtitle>Plant physiology (Bethesda)</jtitle><date>1971-06-01</date><risdate>1971</risdate><volume>47</volume><issue>6</issue><spage>779</spage><epage>783</epage><pages>779-783</pages><issn>0032-0889</issn><eissn>1532-2548</eissn><abstract>The effect of pH on the pathways of carbon in photosynthesis was examined in chloroplast preparations from Acetabularia mediterranea. The flow of carbon into a number of photosynthetic intermediates, particularly sucrose, glycine, serine, glycolate, and the insoluble fraction, was strongly influenced by pH. At higher pH a much larger portion of the 14C entered intermediates of the glycolate pathway. Although maximal apparent photosynthesis occurred at pH 7.6 to 7.7, cytoplasmic pH was found to be 8.0 to 8.4, using indicators. The pattern of distribution of 14C in intermediates of whole cells was closest to that in chloroplasts at the higher pH range.</abstract><pub>American Society of Plant Physiologists</pub><tpages>5</tpages></addata></record>
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source	Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; JSTOR Archive Collection A-Z Listing; Alma/SFX Local Collection
subjects	Carbon Carbon dioxide Chloroplasts Chromatography Glycolates Photosynthesis Plant cells Plants Radioactive decay Radiocarbon
title	effect of pH on the products of photosynthesis in 14CO2 by chloroplast preparations from Acetabularia mediterranea
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