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The measurement of recombination kinetics from the S 2 Q -B state of photosystem II (PS II) in spinach thylakoids using a thermoluminescence technique is described. Such measurements reveal that PS II exists in at least two substates with distinct kinetic and thermodynamic behaviors. Since it is not affected by treatments to alter the formal redox state of the PS II centers it...
The instrument generates, from a combined array of light emitting diodes (LED), non-periodical flashes of variable spectral composition and of user-defined timing, energy and duration. In a standard application, the instrument is used to excite photochemistry in photosynthetically active samples by strong single-turnover flashes and to follow the elicited electron-transfer reactions using weak non-periodic...
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