title: AS-1 cyanophage infection inhibits the photosynthetic electron flow of photosystem II in Synechococcus sp. PCC 6301, a cyanobacterium.
abstract: In Synechococcus sp. cells AS-1 cyanophage infection gradually inhibits the photosystem II mediated photosynthetic electron flow whereas the activity of photosystem I is apparently unaffected by the cyanophage infection. Transient fluorescence induction and flash-induced delayed luminescence decay studies revealed that the inhibition may occur at the level of the secondary acceptor, QB of photosystem II. In addition, the breakdown of D1-protein is inhibited, comparable to DCMU-induced protection of D1-protein turnover, in AS-1-infected cells.
authors.affiliation: Institute of Plant Physiology, Biological Research Center, Szeged, Hungary.
authors.forename: T A
authors.initials: TA
authors.lastname: Teklemariam
authors.forename: S
authors.initials: S
authors.lastname: Demeter
authors.forename: Z
authors.initials: Z
authors.lastname: Deák
authors.forename: G
authors.initials: G
authors.lastname: Surányi
authors.forename: G
authors.initials: G
authors.lastname: Borbély
mesh_terms: D002734:Chlorophyll / Q000378:metabolism; D000458:Cyanobacteria / Q000378:metabolism*; D004267:DNA Viruses / Q000502:physiology*; D004237:Diuron / Q000494:pharmacology; D004579:Electron Transport; D005453:Fluorescence; D007700:Kinetics; D045342:Light-Harvesting Protein Complexes; D045322:Photosynthetic Reaction Center Complex Proteins / Q000187:drug effects / Q000378:metabolism*; D045331:Photosystem I Protein Complex; D045332:Photosystem II Protein Complex
chemical_list: D045342:Light-Harvesting Protein Complexes; D045322:Photosynthetic Reaction Center Complex Proteins; D045331:Photosystem I Protein Complex; D045332:Photosystem II Protein Complex; D002734:Chlorophyll; D004237:Diuron