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'Metabolism' in keywords Facet   Publication Year 1992  [X]
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1Author    Bernd Schneider, Manfred Stock, Gernot Schneider, HorstRobert Schütte, Klaus Schreiber, Angela Brauner, ErnstUlrich KaußmannRequires cookie*
 Title    Metabolism of Amitrole in Apple: I. Soluble Metabolites from Mature Fruits  
 Abstract    Mature fruits from apple trees contain residual amounts of radiolabel derived from soil-ap-plied [3,5-14C]amitrole. This report deals with characterization of the soluble part of this radio­ activity. By GC/MS of suitable derivatives 3-(l,2,4-triazol-l-yl)-2-aminopropionic acid was identi­ fied as a new metabolite of amitrole. Significant parts of radiolabel were incorporated into genuine plant products, indicating liberation of 14C 0 2 from the applied substance followed by reassimilation. Possible pathways of metabolism of amitrole within the system soil/apple tree are discussed. 
  Reference    Z. Naturforsch. 47c, 120—125 (1992); received June 18/October 24 1991 
  Published    1992 
  Keywords    Herbicide, Amitrole, Metabolism, Reassimilation, Structural Elucidation 
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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0120.pdf 
 Identifier    ZNC-1992-47c-0120 
 Volume    47 
2Author    Christine Gareis, Christiane Rivero, Ingolf Schuphan, Burkhard SchmidtRequires cookie*
 Title    Plant Metabolism of Xenobiotics. Comparison of the Metabolism of 3.4-Dichloroaniline in Soybean Excised Leaves and Soybean Cell Suspension Cultures  
 Abstract    Excised leaves and cell suspension cultures of soybean (Glycine m ax L.) were incubated with [UL-14C]-3,4-dichloroaniline. The compound was almost completely metabolized after 48 h in both systems; it was apparent that the major detoxification pathways present in the excised leaves were also present in the cultured cells. Besides considerable amounts of insoluble resi­ dues, the N-glucosyl and the N-malonyl conjugates of 3,4-dichloroaniline, and a yet unknown metabolite was formed in the excised leaves; tentatively the latter was identified with the 6'-0-malonylester of N-glucosyl-3,4-dichloroaniline. The cell suspension cultures produced predominantly the N-malonyl conjugate, besides negligible amounts of the N-glucosyl conju­ gate, and insoluble residues; the majority of the N-malonyl compound was excreted into the medium. It was shown, that the metabolism of 3,4-dichloroaniline in excised leaves and cell suspension cultures of soybean was directed towards different end products: the excised leaves were able to make extensive use of cell wall structures as a deposit for xenobiotic bound resi­ dues, resembling plants in this respect; lack of these structures in the cultured soybean cells resulted in a soluble end product, namely the N-malonyl conjugate. 
  Reference    Z. Naturforsch. 47c, 823—829 (1992); received August 5 1992 3. 
  Published    1992 
  Keywords    4-Dichloroaniline, Metabolism, Soybean, Cell Culture, Excised Leaves 
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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0823.pdf 
 Identifier    ZNC-1992-47c-0823 
 Volume    47