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Long-Term Acclimation of the Cyanobacterium Synechocystis sp PCC 6803 to High Light Is Accompanied by an Enhanced Production of Chlorophyll That Is Preferentially Channeled to Trimeric Photosystem I
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SYSNO ASEP 0388823 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Long-Term Acclimation of the Cyanobacterium Synechocystis sp PCC 6803 to High Light Is Accompanied by an Enhanced Production of Chlorophyll That Is Preferentially Channeled to Trimeric Photosystem I Author(s) Kopečná, Jana (MBU-M) RID
Komenda, Josef (MBU-M) RID, ORCID
Bučinská, Lenka (MBU-M) RID
Sobotka, Roman (MBU-M) RID, ORCIDSource Title Plant Physiology. - : Oxford University Press - ISSN 0032-0889
Roč. 160, č. 4 (2012), s. 2239-2250Number of pages 12 s. Language eng - English Country US - United States Keywords CAB-LIKE-PROTEINS ; SP PCC-6803 ; PHOTOSYNTHETIC APPARATUS Subject RIV EE - Microbiology, Virology R&D Projects ED2.1.00/03.0110 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GAP501/10/1000 GA ČR - Czech Science Foundation (CSF) GBP501/12/G055 GA ČR - Czech Science Foundation (CSF) Institutional support MBU-M - RVO:61388971 UT WOS 000311998200044 DOI 10.1104/pp.112.207274 Annotation Cyanobacteria acclimate to high-light conditions by adjusting photosystem stoichiometry through a decrease of photosystem I (PSI) abundance in thylakoid membranes. As PSI complexes bind the majority of chlorophyll (Chl) in cyanobacterial cells, it is accepted that the mechanism controlling PSI level/synthesis is tightly associated with the Chl biosynthetic pathway. However, how Chl is distributed to photosystems under different light conditions remains unknown. Using radioactive labeling by S-35 and by C-14 combined with native/two-dimensional electrophoresis, we assessed the synthesis and accumulation of photosynthetic complexes in parallel with the synthesis of Chl in Synechocystis sp. PCC 6803 cells acclimated to different light intensities. Although cells acclimated to higher irradiances (150 and 300 mu E m(-2)s(-1)) exhibited markedly reduced PSI content when compared with cells grown at lower irradiances (10 and 40 mu E m(-2)s(-1)), they grew much faster and synthesized significantly more Chl, as well as both photosystems Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2013
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