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'O Methyltransferases' in keywords Facet   Publication Year 1986  [X]
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1986[X]
1Author    KarlDietrich Hauffe, KlausH. Ahlbrock, D. Ierk ScheelRequires cookie*
 Title    Elicitor-Stimulated Furanocoumarin Biosynthesis in Cultured Parsley Cells: S-Adenosyl-L-Methionine:BergaptoI and S-Adenosyl-L-Methionine: Xanthotoxol O-Methyltransferases  
 Abstract    Cultured parsley cells (Petroselinum crispum) treated with an elicitor from the soybean patho­ gen, P hytophthora m egasperm a f. sp. glycinea, were used as source for the separation, extensive purification and characterization of S-adenosyl-L-methionine: xanthotoxol and S-adenosyl-L-m ethionine: bergaptol O-methyltransferases. The products, xanthotoxin and bcrgapten, were among the most abundant coumarin derivatives accumulated in the culture fluid of elicitor-treated parsley cells. The latter enzyme also catalyzed the methylation of 5-hydroxyxanthotoxin to isopimpinellin, another major coumarin derivative in this system. The activities of both enzymes showed transient increases upon elicitor application prior to the accumulation of the products. No activity was detectable in untreated cells. Activity increases of the O-methyltransferases occurred a few hours later than those of phenylalanine ammonia-lyase and 4-coumarate:CoA ligase. 
  Reference    Z. Naturforsch. 41c, 228 (1986); received October 14. 1985 
  Published    1986 
  Keywords    birthday Furanocoumarins, Phytoalexins, O-Methyltransferases, Fungal Elicitor, Cell Suspension Cultures 
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 TEI-XML for    default:Reihe_C/41/ZNC-1986-41c-0228.pdf 
 Identifier    ZNC-1986-41c-0228 
 Volume    41