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: T A Teklemariam, S Demeter, Z Deák, G Surányi, G Borbély
• Journal: FEBS letters (FEBS Lett) Vol. 270 Issue 1-2 Pg. 211-5 (Sep 17 1990) ISSN: 0014-5793 [Print] England
• PMID: 2121523 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Light-Harvesting Protein Complexes
• Photosynthetic Reaction Center Complex Proteins
• Photosystem I Protein Complex
• Photosystem II Protein Complex
• Chlorophyll
• Diuron

Topics

• Chlorophyll (metabolism)
• Cyanobacteria (metabolism)
• DNA Viruses (physiology)
• Diuron (pharmacology)
• Electron Transport
• Fluorescence
• Kinetics
• Light-Harvesting Protein Complexes
• Photosynthetic Reaction Center Complex Proteins (drug effects, metabolism)
• Photosystem I Protein Complex
• Photosystem II Protein Complex