Effect of partial or complete elimination of light-harvesting complexes on the surface electric properties and the functions of cyanobacterial photosynthetic membranes

Physiologia Plantarum
Anelia G DobrikovaE Apostolova

Abstract

Influence of the modification of the cyanobacterial light-harvesting complex [i.e. phycobilisomes (PBS)] on the surface electric properties and the functions of photosynthetic membranes was investigated. We used four PBS mutant strains of Synechocystis sp. PCC6803 as follows: PAL (PBS-less), CK (phycocyanin-less), BE (PSII-PBS-less) and PSI-less/apcE(-) (PSI-less with detached PBS). Modifications of the PBS content lead to changes in the cell morphology and surface electric properties of the thylakoid membranes as well as in their functions, such as photosynthetic oxygen-evolving activity, P700 kinetics and energy transfer between the pigment-protein complexes. Data reveal that the complete elimination of PBS in the PAL mutant causes a slight decrease in the electric dipole moments of the thylakoid membranes, whereas significant perturbations of the surface charges were registered in the membranes without assembled PBS-PSII macrocomplex (BE mutant) or PSI complex (PSI-less mutant). These observations correlate with the detected alterations in the membrane structural organization. Using a polarographic oxygen rate electrode, we showed that the ratio of the fast to the slow oxygen-evolving PSII centers depends on the partial or c...Continue Reading

References

Mar 11, 1977·Biochimica Et Biophysica Acta·P C Maxwell, J Biggins
Jun 1, 1970·Photochemistry and Photobiology·B KokM McGloin
Dec 1, 1980·Biochimica Et Biophysica Acta·J Barber
Dec 16, 1997·Biophysical Chemistry·A DobrikovaI Petkanchin
Nov 21, 1998·Molecular Microbiology·L K Anderson, C M Toole
Mar 2, 1999·Journal of Structural Biology·R MacColl
Oct 11, 2003·Plant Physiology·Isamu SakuraiHajime Wada
Apr 6, 2004·Plant Physiology·Ildikó DomonkosZoltán Gombos
Feb 9, 2006·Journal of Photochemistry and Photobiology. B, Biology·Emilia L ApostolovaStefka G Taneva
Jul 6, 2006·Journal of Biological Inorganic Chemistry : JBIC : a Publication of the Society of Biological Inorganic Chemistry·Klára Nárcisz SasEva Danielsen
Jul 20, 2007·Photosynthesis Research·Jan Kern, Gernot Renger
Mar 18, 2008·Journal of Photochemistry and Photobiology. B, Biology·Emilia L ApostolovaStefka G Taneva
Aug 12, 2009·Plant & Cell Physiology·Mai WatanabeMasahiko Ikeuchi
Oct 2, 2009·Zeitschrift Für Naturforschung. C, a Journal of Biosciences·Yuzeir Zeinalov
Dec 7, 2010·Biochimica Et Biophysica Acta·Marja Hakala-Yatkin, Esa Tyystjärvi
Feb 8, 2011·Photosynthesis Research·Hajnalka Laczkó-DobosIldikó Domonkos
Mar 12, 2011·Journal of Photochemistry and Photobiology. B, Biology·Eugene G MaksimovVladimir Z Paschenko

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Citations

Mar 5, 2017·Zeitschrift Für Naturforschung. C, a Journal of Biosciences·Ekaterina K YotsovaEmilia L Apostolova
Oct 31, 2018·Photosynthesis Research·Ottó ZsirosÉva Domokos-Szabolcsy
Apr 17, 2014·FASEB Journal : Official Publication of the Federation of American Societies for Experimental Biology·Bruno DeméJuliette Jouhet

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