Carbonic anhydrase activity in leaves and its role in the first step of C4 photosynthesis
In C4 plants carbonic anhydrase catalyzes the critical first step of C4 photosynthesis, the hydration of CO2 to bicarbonate. The maximum activity of this enzyme in C4 leaf extracts, measured by H+ production with saturating CO2 and extrapolated to 25 degrees C, was found to be 3,000 to 10,000 times...
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| Veröffentlicht in: | Plant physiology (Bethesda) 1990-06, Vol.93 (2), p.825-828 |
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| container_title | Plant physiology (Bethesda) |
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| creator | Hatch, M.D. (Bond University, Queensland, Australia) Burnell, J.N |
| description | In C4 plants carbonic anhydrase catalyzes the critical first step of C4 photosynthesis, the hydration of CO2 to bicarbonate. The maximum activity of this enzyme in C4 leaf extracts, measured by H+ production with saturating CO2 and extrapolated to 25 degrees C, was found to be 3,000 to 10,000 times the maximum photosynthesis rate for these leaves. Similar activities were found in C3 leaf extracts. However, the calculated effective activity of this enzyme at in vivo CO2 concentrations was apparently just sufficient to prevent the rate of conversion of CO2 to HCO3- from limiting C4 photosynthesis. This conclusion was supported by the mass spectrometric determination of leaf carbonic anhydrase activities |
| doi_str_mv | 10.1104/pp.93.2.825 |
| format | Article |
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The maximum activity of this enzyme in C4 leaf extracts, measured by H+ production with saturating CO2 and extrapolated to 25 degrees C, was found to be 3,000 to 10,000 times the maximum photosynthesis rate for these leaves. Similar activities were found in C3 leaf extracts. However, the calculated effective activity of this enzyme at in vivo CO2 concentrations was apparently just sufficient to prevent the rate of conversion of CO2 to HCO3- from limiting C4 photosynthesis. This conclusion was supported by the mass spectrometric determination of leaf carbonic anhydrase activities</description><identifier>ISSN: 0032-0889</identifier><identifier>EISSN: 1532-2548</identifier><identifier>DOI: 10.1104/pp.93.2.825</identifier><identifier>PMID: 16667544</identifier><identifier>CODEN: PPHYA5</identifier><language>eng</language><publisher>Rockville, MD: American Society of Plant Physiologists</publisher><subject>ACTIVIDAD CATALITICA ; ACTIVIDAD ENZIMATICA ; ACTIVITE CATALYTIQUE ; ACTIVITE ENZYMATIQUE ; Biological and medical sciences ; Bundle sheath cells ; C4 photosynthesis ; C4 plants ; Carbon dioxide ; CARBONATE DESHYDRATASE ; CARBONATO DEHIDRATASA ; Communications ; Enzymes ; FEUILLE ; FOTOSINTESIS ; Fundamental and applied biological sciences. Psychology ; HOJAS ; Leaves ; Mass spectrometers ; Mesophyll cells ; Metabolism ; Metabolism and Enzymology ; PHOTOSYNTHESE ; Photosynthesis ; Photosynthesis, respiration. Anabolism, catabolism ; Plant physiology and development ; Plants</subject><ispartof>Plant physiology (Bethesda), 1990-06, Vol.93 (2), p.825-828</ispartof><rights>Copyright 1990 American Society of Plant Physiologists</rights><rights>1991 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/4272903$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/4272903$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>230,314,780,784,803,885,27924,27925,58017,58250</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=19279961$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Hatch, M.D. (Bond University, Queensland, Australia)</creatorcontrib><creatorcontrib>Burnell, J.N</creatorcontrib><title>Carbonic anhydrase activity in leaves and its role in the first step of C4 photosynthesis</title><title>Plant physiology (Bethesda)</title><description>In C4 plants carbonic anhydrase catalyzes the critical first step of C4 photosynthesis, the hydration of CO2 to bicarbonate. The maximum activity of this enzyme in C4 leaf extracts, measured by H+ production with saturating CO2 and extrapolated to 25 degrees C, was found to be 3,000 to 10,000 times the maximum photosynthesis rate for these leaves. Similar activities were found in C3 leaf extracts. However, the calculated effective activity of this enzyme at in vivo CO2 concentrations was apparently just sufficient to prevent the rate of conversion of CO2 to HCO3- from limiting C4 photosynthesis. This conclusion was supported by the mass spectrometric determination of leaf carbonic anhydrase activities</description><subject>ACTIVIDAD CATALITICA</subject><subject>ACTIVIDAD ENZIMATICA</subject><subject>ACTIVITE CATALYTIQUE</subject><subject>ACTIVITE ENZYMATIQUE</subject><subject>Biological and medical sciences</subject><subject>Bundle sheath cells</subject><subject>C4 photosynthesis</subject><subject>C4 plants</subject><subject>Carbon dioxide</subject><subject>CARBONATE DESHYDRATASE</subject><subject>CARBONATO DEHIDRATASA</subject><subject>Communications</subject><subject>Enzymes</subject><subject>FEUILLE</subject><subject>FOTOSINTESIS</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>HOJAS</subject><subject>Leaves</subject><subject>Mass spectrometers</subject><subject>Mesophyll cells</subject><subject>Metabolism</subject><subject>Metabolism and Enzymology</subject><subject>PHOTOSYNTHESE</subject><subject>Photosynthesis</subject><subject>Photosynthesis, respiration. Anabolism, catabolism</subject><subject>Plant physiology and development</subject><subject>Plants</subject><issn>0032-0889</issn><issn>1532-2548</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><recordid>eNpVzE1LAzEQgOEgiq3VkzfxkIvH1pkkm91cBCl-QcGD9uBpyabZNmW7WZJY6L93S0vB0wzzDC8htwgTRBCPXTdRfMImBcvOyBAzzsYsE8U5GQL0OxSFGpCrGNcAgBzFJRmglDLPhBiSn6kOlW-dobpd7RZBR0u1SW7r0o66ljZWb23scUFdijT4xu7PaWVp7UJMNCbbUV_TqaDdyicfd22P0cVrclHrJtqb4xyR-evL9_R9PPt8-5g-z8Y155iNmZA5V9ZyoWxmJFdSSVGhUbrOFEjQXAppOPZogEvAylQIC2sFFFjlwEfk6dDtfquNXRjbpqCbsgtuo8Ou9NqV_6V1q3LptyWCZJnCPvBwDOhodFMH3RoXTwFULFdK7v_uD3_rmHw4uWA5U8B7vjtwrX2pl6FPzL8UiAIF53_Qzn3E</recordid><startdate>19900601</startdate><enddate>19900601</enddate><creator>Hatch, M.D. (Bond University, Queensland, Australia)</creator><creator>Burnell, J.N</creator><general>American Society of Plant Physiologists</general><scope>FBQ</scope><scope>IQODW</scope><scope>5PM</scope></search><sort><creationdate>19900601</creationdate><title>Carbonic anhydrase activity in leaves and its role in the first step of C4 photosynthesis</title><author>Hatch, M.D. (Bond University, Queensland, Australia) ; Burnell, J.N</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-f3315-246739ee349e5c6396964b1c9af59060a3646c31e5cc03601bcb10dee4081b703</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>ACTIVIDAD CATALITICA</topic><topic>ACTIVIDAD ENZIMATICA</topic><topic>ACTIVITE CATALYTIQUE</topic><topic>ACTIVITE ENZYMATIQUE</topic><topic>Biological and medical sciences</topic><topic>Bundle sheath cells</topic><topic>C4 photosynthesis</topic><topic>C4 plants</topic><topic>Carbon dioxide</topic><topic>CARBONATE DESHYDRATASE</topic><topic>CARBONATO DEHIDRATASA</topic><topic>Communications</topic><topic>Enzymes</topic><topic>FEUILLE</topic><topic>FOTOSINTESIS</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>HOJAS</topic><topic>Leaves</topic><topic>Mass spectrometers</topic><topic>Mesophyll cells</topic><topic>Metabolism</topic><topic>Metabolism and Enzymology</topic><topic>PHOTOSYNTHESE</topic><topic>Photosynthesis</topic><topic>Photosynthesis, respiration. Anabolism, catabolism</topic><topic>Plant physiology and development</topic><topic>Plants</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hatch, M.D. (Bond University, Queensland, Australia)</creatorcontrib><creatorcontrib>Burnell, J.N</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Plant physiology (Bethesda)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hatch, M.D. (Bond University, Queensland, Australia)</au><au>Burnell, J.N</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Carbonic anhydrase activity in leaves and its role in the first step of C4 photosynthesis</atitle><jtitle>Plant physiology (Bethesda)</jtitle><date>1990-06-01</date><risdate>1990</risdate><volume>93</volume><issue>2</issue><spage>825</spage><epage>828</epage><pages>825-828</pages><issn>0032-0889</issn><eissn>1532-2548</eissn><coden>PPHYA5</coden><abstract>In C4 plants carbonic anhydrase catalyzes the critical first step of C4 photosynthesis, the hydration of CO2 to bicarbonate. The maximum activity of this enzyme in C4 leaf extracts, measured by H+ production with saturating CO2 and extrapolated to 25 degrees C, was found to be 3,000 to 10,000 times the maximum photosynthesis rate for these leaves. Similar activities were found in C3 leaf extracts. However, the calculated effective activity of this enzyme at in vivo CO2 concentrations was apparently just sufficient to prevent the rate of conversion of CO2 to HCO3- from limiting C4 photosynthesis. This conclusion was supported by the mass spectrometric determination of leaf carbonic anhydrase activities</abstract><cop>Rockville, MD</cop><pub>American Society of Plant Physiologists</pub><pmid>16667544</pmid><doi>10.1104/pp.93.2.825</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0032-0889 |
| ispartof | Plant physiology (Bethesda), 1990-06, Vol.93 (2), p.825-828 |
| issn | 0032-0889 1532-2548 |
| language | eng |
| recordid | cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_1062591 |
| source | JSTOR Archive Collection A-Z Listing; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | ACTIVIDAD CATALITICA ACTIVIDAD ENZIMATICA ACTIVITE CATALYTIQUE ACTIVITE ENZYMATIQUE Biological and medical sciences Bundle sheath cells C4 photosynthesis C4 plants Carbon dioxide CARBONATE DESHYDRATASE CARBONATO DEHIDRATASA Communications Enzymes FEUILLE FOTOSINTESIS Fundamental and applied biological sciences. Psychology HOJAS Leaves Mass spectrometers Mesophyll cells Metabolism Metabolism and Enzymology PHOTOSYNTHESE Photosynthesis Photosynthesis, respiration. Anabolism, catabolism Plant physiology and development Plants |
| title | Carbonic anhydrase activity in leaves and its role in the first step of C4 photosynthesis |
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