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1997 (1)
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1Author    M. Böckmann, K. Taraz, H. BudzikiewiczRequires cookie*
 Title    Biogenesis of the Pyoverdin Chromophore  
 Abstract    A fter growing Pseudomonas aeruginosa in the presence of 2 ,4-[4-15N]-diaminobutyric acid (D ab) its incorporation into the quinoline chromophore of the pyoverdin produced by this bacterium could be shown by mass and NM R-spectroscopic techniques. In combination with earlier results it can thus be stated that the precursor of the chrom ophore is a condensation product of L-Dab and D-Phe or D-Tyr. A synthesis for [4 -15N ]-D ab is described. 
  Reference    Z. Naturforsch. 52c, 319 (1997); received April 17 1997 
  Published    1997 
  Keywords    Pseudomonas, Siderophores, Pyoverdin, Biogenesis, l:, N-Labelling 
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 TEI-XML for    default:Reihe_C/52/ZNC-1997-52c-0319.pdf 
 Identifier    ZNC-1997-52c-0319 
 Volume    52 
2Author    Helmut Wombacher, Monika Reuter-SmerdkaRequires cookie*
 Title    Spectrometric and Biological Data of l,N 6-Ethenoadenosine 3',5'-Cyclic Monophosphate  
  Reference    (Z. Naturforsch. 31c, 18 [1976]; received July 12/September 25 1975) 
  Published    1976 
  Keywords    ) l, N 6-Ethenoadenosine 3', 5'-Cyclic Monophosphate, Fluorescence, Spectra, Protein Kinase 
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 TEI-XML for    default:Reihe_C/31/ZNC-1976-31c-0018.pdf 
 Identifier    ZNC-1976-31c-0018 
 Volume    31 
3Author    P. Moesta, U. Seydel, B. Lindner, H. G. RisebachRequires cookie*
 Title    Detection of Glyceollin on the Cellular Level in Infected Soybean by Laser Microprobe Mass Analysis  
 Abstract    Laser microprobe mass analysis was explored as a m ethod for the detection at the cellular level of the phytoalexin glyceollin in soybean cotyledons infected with an incom patible race of Phy­ tophthora megasperma f. sp. glycinea. For LAMMA® analysis 10 |im freeze microtome sections which were freeze-dried on copper grids were used. The LAM M A spectrum of glyceollin (isomer I) shows a characteristic peak at m /e = 321 which can be attributed to M -O H +. This peak was also present in the spectra of infected regions from a cotyledon b u t was completely absent in the spec­ tra of uninfected tissue. One hundred and fifty LAM M A spectra were taken along a line per­ pendicular to the border line o f infection. A steep rise in glyceollin content toward the infected area was observed. This is the First tim e th at such highly localized glyceollin accumulation has been shown at the cellular level. The results show th at LAM M A analysis is suitable for the de­ tection of organic molecules in biological tissues w ith high lateral resolution. 
  Reference    Z. Naturforsch. 37c, 748—751 (1982); received May 19 1982 
  Published    1982 
  Keywords    Glyceollin, Phytoalexins, Soybean, Glycine m ax, L, LAM MA 
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 TEI-XML for    default:Reihe_C/37/ZNC-1982-37c-0748.pdf 
 Identifier    ZNC-1982-37c-0748 
 Volume    37