Positive charges of polyamines protect PSII in isolated thylakoid membranes during photoinhibitory conditions
The effects of the positive charges of amines such as spermine (SPM), putrescine (PUT) and methylamine (MET) on the protection of PSII against excessive illumination were investigated in isolated thylakoid membranes. Under photoinhibition conditions, water oxidation, the kinetics of the Chl fluoresc...
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| Veröffentlicht in: | Plant and cell physiology 2011-05, Vol.52 (5), p.866-873 |
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| container_title | Plant and cell physiology |
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| creator | Hamdani, Saber Gauthier, Alain Msilini, Najoua Carpentier, Robert |
| description | The effects of the positive charges of amines such as spermine (SPM), putrescine (PUT) and methylamine (MET) on the protection of PSII against excessive illumination were investigated in isolated thylakoid membranes. Under photoinhibition conditions, water oxidation, the kinetics of the Chl fluorescence rise and charge recombination in PSII were affected. A low concentration of SPM (1 mM) added before photoinhibition produced a significant improvement of F(v)/F(0), the oxygen yield and the amplitude of the B-band of thermoluminescence compared with the other amines. Amongst the amines studied, only SPM could protect the photosynthetic apparatus under photoinhibition conditions. This protection was probably provided by the polycationic nature of SPM (four positive charges at physiological pH), which can stabilize surface-exposed proteins of PSII through electrostatic interaction. |
| doi_str_mv | 10.1093/pcp/pcr040 |
| format | Article |
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Under photoinhibition conditions, water oxidation, the kinetics of the Chl fluorescence rise and charge recombination in PSII were affected. A low concentration of SPM (1 mM) added before photoinhibition produced a significant improvement of F(v)/F(0), the oxygen yield and the amplitude of the B-band of thermoluminescence compared with the other amines. Amongst the amines studied, only SPM could protect the photosynthetic apparatus under photoinhibition conditions. 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This protection was probably provided by the polycationic nature of SPM (four positive charges at physiological pH), which can stabilize surface-exposed proteins of PSII through electrostatic interaction.</description><subject>Chlorophyll - metabolism</subject><subject>Light</subject><subject>Luminescence</subject><subject>Oxygen - metabolism</subject><subject>Photosystem II Protein Complex - chemistry</subject><subject>Photosystem II Protein Complex - metabolism</subject><subject>Polyamines - metabolism</subject><subject>Protein Structure, Secondary</subject><subject>Spectrometry, Fluorescence</subject><subject>Spinacia oleracea - metabolism</subject><subject>Spinacia oleracea - radiation effects</subject><subject>Temperature</subject><subject>Thylakoids - metabolism</subject><subject>Thylakoids - radiation effects</subject><issn>0032-0781</issn><issn>1471-9053</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kNtKxDAQhoMo7rp64wNI7gShOmnS06WIh4UFF9TrklN3o21Tk1To25tlVy-GmYGPmZ8PoUsCtwQqejfIIZYDBkdoTlhBkgoyeozmADRNoCjJDJ15_wkQZwqnaJbuKJKmc9StrTfB_Ggst9xttMe2wYNtJ96ZPm6Ds0HLgNdvyyU2PTbetjxohcN2avmXNQp3uhOO72A1OtNv8LC1wZp-a4QJ1k1Y2l7FH7b35-ik4a3XF4e-QB9Pj-8PL8nq9Xn5cL9KJC3LkAiWNhVLCyYbljOVZRnNNChKpahSVXKqhaTAK6EIIwxIUTZVJYpCAtMgdUkX6Hp_N8b_HrUPdWe81G0bY9rR12WeZ2mV50Ukb_akdNZ7p5t6cKbjbqoJ1Du7dbRb7-1G-OpwdhSdVv_on076C22oeLc</recordid><startdate>20110501</startdate><enddate>20110501</enddate><creator>Hamdani, Saber</creator><creator>Gauthier, Alain</creator><creator>Msilini, Najoua</creator><creator>Carpentier, Robert</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20110501</creationdate><title>Positive charges of polyamines protect PSII in isolated thylakoid membranes during photoinhibitory conditions</title><author>Hamdani, Saber ; Gauthier, Alain ; Msilini, Najoua ; Carpentier, Robert</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c388t-b42f94274cf464d55535e0d33cb92d8a3ebc30a9bd14140178f99b77c04e0ce83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Chlorophyll - metabolism</topic><topic>Light</topic><topic>Luminescence</topic><topic>Oxygen - metabolism</topic><topic>Photosystem II Protein Complex - chemistry</topic><topic>Photosystem II Protein Complex - metabolism</topic><topic>Polyamines - metabolism</topic><topic>Protein Structure, Secondary</topic><topic>Spectrometry, Fluorescence</topic><topic>Spinacia oleracea - metabolism</topic><topic>Spinacia oleracea - radiation effects</topic><topic>Temperature</topic><topic>Thylakoids - metabolism</topic><topic>Thylakoids - radiation effects</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hamdani, Saber</creatorcontrib><creatorcontrib>Gauthier, Alain</creatorcontrib><creatorcontrib>Msilini, Najoua</creatorcontrib><creatorcontrib>Carpentier, Robert</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Plant and cell physiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hamdani, Saber</au><au>Gauthier, Alain</au><au>Msilini, Najoua</au><au>Carpentier, Robert</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Positive charges of polyamines protect PSII in isolated thylakoid membranes during photoinhibitory conditions</atitle><jtitle>Plant and cell physiology</jtitle><addtitle>Plant Cell Physiol</addtitle><date>2011-05-01</date><risdate>2011</risdate><volume>52</volume><issue>5</issue><spage>866</spage><epage>873</epage><pages>866-873</pages><issn>0032-0781</issn><eissn>1471-9053</eissn><abstract>The effects of the positive charges of amines such as spermine (SPM), putrescine (PUT) and methylamine (MET) on the protection of PSII against excessive illumination were investigated in isolated thylakoid membranes. 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| ispartof | Plant and cell physiology, 2011-05, Vol.52 (5), p.866-873 |
| issn | 0032-0781 1471-9053 |
| language | eng |
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| source | Oxford University Press Journals All Titles (1996-Current); MEDLINE; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | Chlorophyll - metabolism Light Luminescence Oxygen - metabolism Photosystem II Protein Complex - chemistry Photosystem II Protein Complex - metabolism Polyamines - metabolism Protein Structure, Secondary Spectrometry, Fluorescence Spinacia oleracea - metabolism Spinacia oleracea - radiation effects Temperature Thylakoids - metabolism Thylakoids - radiation effects |
| title | Positive charges of polyamines protect PSII in isolated thylakoid membranes during photoinhibitory conditions |
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