Spectroscopic studies of photodamage and photoprotection of photosystem II

Alonso Zavaleta Fernandez De Cordova
Light is required for photosynthesis to occur, but it also has a deleterious effect by damaging the photosynthetic machinery, in particular Photosystem II (PSII). Photoinhibition of PSII is a complex process, balancing between photoinactivation, protective and repair mechanisms. Current understanding of photodamage is limited to competing hypotheses where the photosensitizer is either photosynthetic pigments or the Mn4CaO5 cluster itself, with little consensus on the mechanisms and consequences of PSII photoinactivation. Using different spectroscopic techniques, the...
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