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Silicotungstate lowers dramatically the quantum yield of chlorophyll fluorescence in situ without affecting the rate of electron transport |
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| Authors: | Yung-Sing Li Shiow-Hwey Ueng Bi-Yu Lin |
| Institution: | Institute of Botany, Academia Sinica, Taipei, Taiwan China |
| Abstract: | Electron-transport and fluorescence properties of chloroplasts in the presence of silicotungstate are studied by O2-evolution and fluorescence-quenching techniques. Results show that silicotungstate lowers the fluorescence quantum yield of closed units, without affecting electron-transport activities of open units. Open and closed units are units with oxidized and reduced primary electron acceptor (Q), respectively. |
| Keywords: | Chlorophyll fluorescence Silicotungstate Oxygen evolution Electron transport Photosynthesis (Lettuce chloroplast) Tes DCMU 3-(3 4-dichlorophenyl)-1 1-dimethylurea DCIP 2 6-dichlorophenolindophenol PS photosystem Chl chlorophyll |
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