Photoinhibition of photosynthesis. An evaluation of damaging and protective mechanisms

作者: G. Heinrich Krause

DOI: 10.1111/J.1399-3054.1988.TB02020.X

关键词:

摘要: Inhibition of photosynthesis by excess excitation energy is initiated in the reaction center photosystem II. The primary site photoinhibition (components charge separation or secondary electron acceptor QB) still disputed. Photoinhibition characterized quenching variable chlorophyll flurescence (Fv), resulting from increased thermal dissipation energy. Varying responses initial fluorescence (F0), however, seem to indicate involvement different mechanisms. As far as reversible within minutes hours, it can be viewed a controlled protective mechanism that serves dissipate excessive energy, Supposedly, another dissipative mechanism, distinguished its faster kinetics (response seconds), related energy-dependent quenching.

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