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'Ascorbic Acid Radicals' in keywords Facet   Publication Year 1993  [X]
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1Author    HartmutB. Stegmann, Paul Schuler, Stefan Westphal, Edgar WagnerRequires cookie*
 Title    Oxidative Stress of Crops Monitored by EPR  
 Abstract    Treatm ent of leaves of spinach, corn, and peas with the herbicides paraquat, am itrole or acifluorfen leads to oxidative stress resulting in a light driven drastically increased production of ascorbic acid radical (monodehydroascorbic acid, M DAA) which could be dem onstrated by in vivo EPR analysis. A discrimination of the M D A A form ation between the action of elec­ tron uncouplers and catalase inhibitors can be achieved by observation of the radical rise ki­ netics. Significant M DAA signal intensities are detected in the darkness likewise. These signals are probably due to the action of ascorbic acid oxidase activated by membrane destruction. 
  Reference    Z. Naturforsch. 48c, 766—772 (1993); received M arch 3/July 1 1993 
  Published    1993 
  Keywords    Herbicides, Paraquat, Amitrole, Ascorbic Acid Radicals 
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 TEI-XML for    default:Reihe_C/48/ZNC-1993-48c-0766.pdf 
 Identifier    ZNC-1993-48c-0766 
 Volume    48