Quenching of the system II chlorophyll fluorescence by the plastoquinone pool.
D002734:Chlorophyll / Q000378:metabolism*; D003624:Darkness; D004237:Diuron / Q000494:pharmacology; D008027:Light; D010084:Oxidation-Reduction; D010788:Photosynthesis / Q000187:drug effects; D010944:Plants; D010971:Plastoquinone / Q000378:metabolism*; D011809:Quinones / Q000378:metabolism*; D013050:Spectrometry, Fluorescence
D011809:Quinones; D002734:Chlorophyll; D004237:Diuron; D010971:Plastoquinone