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'H erbicides' in keywords Facet   Publication Year 1984  [X]
Facet   section ZfN Section C  [X]
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1Author    J.J S Van RensenRequires cookie*
 Title    Interaction of Photosystem II Herbicides with Bicarbonate and Formate in Their Effects on Photosynthetic Electron Flow  
 Abstract    The reactivation o f the Hill reaction in C 0 2-depleted broken chloroplasts by various concen­ trations o f bicarbonate was measured in the absence and in the presence o f photosystem II herbicides. It appears that these herbicides decrease the apparent affinity o f the thylakoid membrane for bicarbonate. Different characteristics o f bicarbonate binding were observed in chloroplasts o f triazine-resistant Amaranthus hybridus com pared to the triazine-sensitive biotype. It is concluded that photosystem II herbicides, bicarbonate and formate interact with each other in their binding to the Q B-protein and their interference with photosynthetic electron transport. 
  Reference    Z. Naturforsch. 39c, 374—377 (1984); received N ovem ber 15 1983 
  Published    1984 
  Keywords    Photosynthesis, Electron Transport, H erbicides, Bicarbonate, Formate 
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 TEI-XML for    default:Reihe_C/39/ZNC-1984-39c-0374.pdf 
 Identifier    ZNC-1984-39c-0374 
 Volume    39 
2Author    JohnE. Hearst, Kenneth SauerRequires cookie*
 Title    Protein Sequence Homologies between Portions of the L and M Subunits of Reaction Centers of Rhodopseudomonas capsulata and the QB-Protein of Chloroplast Thylakoid Membranes: a Proposed Relation to Quinone-Binding Sites  
 Abstract    Department o f Chemistry, U niversity o f California and D ivision o f C hem ical Biodynam ics, Sequence hom ology has been found between the L and M subunits o f Rhodopseudom onas capsulata reaction centers and the Q B-protein from all species thus far sequenced. The hom ology between the L subunit and the Q B-protein is contained in the sequence P F H M L GA M H G -L V -S and is believed to have survived three billion years o f evolution. A m odel is presented which associates quinone binding with this 
  Reference    Z. Naturforsch. 39c, 421 (1984); received D ecem ber 6 1983 
  Published    1984 
  Keywords    32 Kilodalton Protein, Sem iquinone Anion Stabilization, H erbicides, Photosynthesis 
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 TEI-XML for    default:Reihe_C/39/ZNC-1984-39c-0421.pdf 
 Identifier    ZNC-1984-39c-0421 
 Volume    39