| | 1 | Author
| W. S. Cohen, J. R. Barton | Requires cookie* | | | Title
| The Use of 0 2-Evolving Subchloroplast Particles to Study Acceptor and Inhibitor Sites on the Reducing Side of Photosystem II  | | | | Abstract
| Photosystem II particles that retain the ability to evolve 0 2 have been used to exam ine acceptor and inhibitor sites in the photosynthetic electron transfer chain between Q and plasto-quinone. Employing the water to dichlorobenzoquinone reaction to assay photosystem II activity, we have demonstrated that electron transport in thylakoids and particles is equally sensitive to inhibition by D C M U , dinoseb, metribuzin, H Q N O and DBMIB. Based on differential sensitivity to inhibition by D C M U vs. H Q N O or DBMIB, we suggest that when synthetic quinones, e.g. 2,6-dichlorobenzoquinone operate as Hill reagents in particles they are reduced primarily by the plastoquinone pool. W hen synthetic quinones, e.g. 5,6-m ethylenedioxy-2,3-dim ethyl benzoquinone act as autoxidizable acceptors they accept electron from the Q /B com plex at a point that is located between the D C M U and H Q N O (DBM IB) inhibition sites. | | | |
Reference
| Z. Naturforsch. 38c, 793—798 (1983); received April 26 1983 | | | |
Published
| 1983 | | | |
Keywords
| Thylakoids, Photosystem II Particles, Q uinones, Inhibitors, Electron Transfer | | | |
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| default:Reihe_C/38/ZNC-1983-38c-0793.pdf | | | | Identifier
| ZNC-1983-38c-0793 | | | | Volume
| 38 | |
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