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Interaction of exogenous benzoquinone with Photosystem II in chloroplasts. The semiquinone form acts as a dichlorophenyldimethylurea-insensitive secondary acceptor |
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| Authors: | Jérôme Lavergne | |
| Affiliation: | Laboratoire de Photosynthèse, C.N.R.S., 91190 Gif-sur-Yvette France | |
| Abstract: | Chloroplasts were submitted to a sequence of saturating short flashes and then rapidly mixed with dichlorophenyldimethylurea (DCMU). The amount of singly reduced secondary acceptor (B?) present was estimated from the DCMU-induced increase in fluorescence in the dark caused by the reaction: QB? | |
| Keywords: | Photosystem II Benzoquinone Chlorophyll fluorescence Dichlorophenyldimethylurea Electron acceptor (Spinach chloroplast) DBMIB dibromothymoquinone DCMU 3-(3,4-dichlorophenyl)-1,1-dimethylurea PS photosystem | |
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