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1996 (1)
1Author    M. Otoo Sumidaa, Shinjiro Niwata3, Takaharu Tanaka3, Tadahide Furunob, M. Amoru, Nakanishib, Ko Wakabayashic, Peter BögerdRequires cookie*
 Title    Accumulation of Protoporphyrinogen IX Induced by Acifluorfen Methyl  
 Abstract    Confocal fluorescence microscopic images were used to investigate the accumulation site of protoporphyrin IX (PPIX) within liverwort cells (Marchantia polymorpha L.) treated with peroxidizing herbicides as acifluorfen methyl (AFM). A high level of PPIX accumulation was observed in the cells during 12 h to 24 h after the addition of AFM . The results obtained from confocal fluorescence microscopic images gave clear evidence that the accumulation of PPIX occurred only in the chloroplasts, but was not observed in the cytosol or at the plasma membrane. The presence of PPIX in the chloroplasts strongly suggests that protoporphyrino­ gen (Protogen) accumulates by inhibition of protoporphyrinogen oxidase (Protox) which is the target enzyme for peroxidizing herbicides. The plastidic occurrence of PPIX provides evidence of either the presence of an additional herbicide-resistant Protox or of a non-enzy-matic Protogen-oxidation system in the Marchantia chloroplast. 
  Reference    Z. Naturforsch. 51c, 174 (1996); received D ecem ber 8/Decem ber 20 1995 
  Published    1996 
  Keywords    Protoporphyrinogen, Protoporphyrinogen Localization, Protoporphyrinogen Oxidation, Liverwort Cell Culture, Confocal Fluorescence Microscopy 
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 TEI-XML for    default:Reihe_C/51/ZNC-1996-51c-0174.pdf 
 Identifier    ZNC-1996-51c-0174 
 Volume    51