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1988 (3)
1Author    Rainer Martin, Gerhard Schilling, Jürgen ReichlingRequires cookie*
 Title    Studies on the Biosynthesis of Pseudoisoeugenols in Tissue Cultures of Pimpinella anisum  
 Abstract    A leaf-differentiating tissue culture which produced substantial amounts of pseudoisoeugenol-(2-methylbutyrate) has been used to examine the origin of the pseudoisoeugenol skeleton. I4 C-and l3 C-labelling revealed L-phenylalanine, frarts-cinnamic acid and p-coumaric acid as precur-sors. 1? C-labelled precursors proved to be especially useful. 
  Reference    Z. Naturforsch. 43c, 328—336 (1988); received January 20 1988 
  Published    1988 
  Keywords    Pimpinella anisum, Umbelliferae, Pseudoisoeugenols, Tissue Culture, Biosynthesis 
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 TEI-XML for    default:Reihe_C/43/ZNC-1988-43c-0328.pdf 
 Identifier    ZNC-1988-43c-0328 
 Volume    43 
2Author    Jürgen Reichling, Rainer Martin, Ulla ThronRequires cookie*
 Title    Production and Accumulation of Phenylpropanoids in Tissue and Organ Cultures of Pimpinella anisum  
 Abstract    A leaf-differentiating callus culture and a root organ culture of Pimpinella anisum have been established in liquid nutrition medium. Their behaviour in accumulation of phenylpropanoids was shown to be different from that of the entire plant. This makes them, together with their special growth behaviour, suitable for labelling experiments with the biosynthesis of pseudoisoeugenols. 
  Reference    Z. Naturforsch. 43c, 42—46 (1988); received July 28/September 22 1987 
  Published    1988 
  Keywords    Pimpinella anisum, Umbelliferae, Tissue and Organ Cultures, Phenylpropanoids, Pseudoiso-eugenols 
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 TEI-XML for    default:Reihe_C/43/ZNC-1988-43c-0042.pdf 
 Identifier    ZNC-1988-43c-0042 
 Volume    43 
3Author    Barbara Upmeier, JürgenE. Thomzik, Wolfgang BarzRequires cookie*
 Title    Enzymatic Studies on the Reversible Synthesis of Nicotinic Acid-N-glucoside in Heterotrophic Parsley Cell Suspension Cultures  
 Abstract    A soluble enzyme catalyzing the transfer of the glucose moiety from UDP-glucose to the nitrogen atom of nicotinic acid was detected in protein preparations from heterotrophic cell suspension cultures of parsley (Petroselinum hortense Hoffm.). Enzyme activity was enriched 22-fold by ammonium sulfate precipitation, gel filtration and ion exchange chromatography. The UDP-glucose : nicotinic acid-N-glucosyltransferase showed a pH-optimum at pH 7.8—8.2 and a temperature optimum at 30 °C. The apparent K M values were determined to be 170 ^M for nicotinic acid and 1.2 mM for the cosubstrate. The native enzyme had a molecular mass of about 46 kDa. The glucosyltransferase reaction was shown to be reversible. The transfer of the glucose molecule from nicotinic acid-N-glucoside to uridinediphosphate yielding uridinediphosphoglucose and nicotinic acid could be demonstrated indicating that nicotinic acid-N-glucoside has a high group-transfer potential. 
  Reference    Z. Naturforsch. 43c, 835—842 (1988); received August 1/September 30 1988 
  Published    1988 
  Keywords    Petroselinum hortense, Umbelliferae, Plant Cell Cultures, Nicotinic Acid, Nicotinic Acid-N-glucoside 
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 TEI-XML for    default:Reihe_C/43/ZNC-1988-43c-0835.pdf 
 Identifier    ZNC-1988-43c-0835 
 Volume    43