Temperature dependence of the delayed fluorescence from wheat leaves treated with 3-(3,4-dichlorophenyl)-1-1,-dimethylurea |
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| Authors: | Vasilij N. Goltsev Pavel S. Venediktov Darenic A. Janumov |
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| Affiliation: | 1. Biophysical Department, Biological Faculty, Moscow State University, Moscow, U.S.S.R.;2. Plant Physiology Laboratory, Agriculture Institute, st. Nemchinovka, Moscow U.S.S.R. |
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| Abstract: | Light saturation curves of the delayed fluorescence of wheat leaves treated with 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU) were measured at different temperatures. Calculated activation energies for a half-saturation actinic light intensity and saturated delayed fluorescence emission were 0.89 and 0.32 eV, respectively. On the basis of the kinetic model energy levels of Photosystem II reaction center components were estimated. |
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| Keywords: | Fluorescence Chlorophyll Photosystem II Dichlorophenyldimethylurea Electron transfer Free energy change |
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