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1984 (1)
1Author    StuartM. Ridley, Peter HortonRequires cookie*
 Title    DCMU-Induced Fluorescence Changes and Photodestruction of Pigments Associated with an Inhibition of Photosystem I Cyclic Electron Flow  
 Abstract    Diuron (DCM U) induces the photodestruction o f pigm ents, w hich is the initial herbicidal symptom. As a working hypothesis, it is proposed that this sym ptom can only be produced when the herbicide dose is sufficiently high to inhibit not only photosystem II electron transport alm ost completely, but also inhibit (through over oxidation) the natural cyclic electron flow associated with photosystem I as well. Using freshly prepared chloroplasts, studies o f D C M U -induced fluorescence changes, and dose responses for inhibition o f electron transport, have been com ­ pared with a dose response for the photodestruction o f pigm ents in chloroplasts during 24 h illumination. Photodestruction o f pigm ents coincides with the inhibition o f cyclic flow. 
  Reference    Z. Naturforsch. 39c, 351 (1984); received October 10 1983 
  Published    1984 
  Keywords    Diuron (DCM U), Photodestruction, Fluorescence, Photosystem I, Cyclic Electron Flow 
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 TEI-XML for    default:Reihe_C/39/ZNC-1984-39c-0351.pdf 
 Identifier    ZNC-1984-39c-0351 
 Volume    39