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1995 (1)
1Author    ManojK. Joshia, PrasannaM. Ohantyb, Salil BoseaRequires cookie*
 Title    Inhibition of State Transition and Light-Harvesting Complex II Phosphorylation-Mediated Changes in Excitation Energy Distribution in the Thylakoids of SANDOZ 9785-Treated Plants  
 Abstract    Thylakoids isolated from SA N 9785 (4-chloro-5-dimethylamino-2-phenyl-3(2H)-pyridazi-none)-treated pea plants showed an inhibition of "state transition" and the light-harvesting complex II (LHC II) phosphorylation-mediated changes in the energy distribution between photosystem II (PS II) and photosystem I (PS I) as measured by a decrease in PS II and an increase in PS I fluorescence yield. Interestingly, in these thylakoids the extent o f phosphory-lation-induced migration o f light-harvesting complex (LHC II-P) to non-appressed m em ­ brane regions was only marginally inhibited. We propose that the suppression in the ability for "state transition" by S A N D O Z 9785 (SA N 9785) treatment occurs due to a lack o f effec­ tive coupling of the migrated LHC II-P and PS I. Since we observed a decrease in the antenna size of PS I of the treated plants, the lack of effective coupling is attributed to this decrease in the antenna size of PS I. 
  Reference    Z. Naturforsch. 50c, 77—8 (1995); received August 3/September 28 1994 
  Published    1995 
  Keywords    Pyridazinone, Photosystems, State Transition, LHC II Phosphorylation, Energy Redistribution 
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 TEI-XML for    default:Reihe_C/50/ZNC-1995-50c-0077.pdf 
 Identifier    ZNC-1995-50c-0077 
 Volume    50