The role of inactive photosystem-11-mediated quenching in a last-ditch community defense against high light stress in vivo
Photoinactivation of photosystem II (PSII), the light-induced loss of ability to evolve oxygen, is an inevitable event during normal photosynthesis, exacerbated by saturating light but counteracted by repair via new protein synthesis. The photoinactivation of PSII is dependent on the dosage of light: in the absence of repair, typically one PSII is photoinactivated per 107 photons, although the exact quantum yield of photoinactivation is modulated by a number of factors, and decreases as fewer...[Show more]
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