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'Brassinosteroids' in keywords Facet   section ZfN Section C  [X]
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2000 (1)
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1992 (1)
1Author    Klaus-Dieter Spindler, M. Argarethe Spindler-Barth, Andreas Turberg, G. Ünter, AdamRequires cookie*
 Title    Action of Brassinosteroids on the Epithelial Cell Line from Chironomus tentans  
 Abstract    The two brassinosteroids, 22S',23S'-homobrassinolide and 22S',23S'-homocastasterone are weak com petitors o f the binding o f [3H]ponasterone A to the intracellular ecdysteroid receptor from the epithelial cell line from Chironom us tentans. The relative affinities to the ecdysteroid receptor are 0.001 for both brassinosteroids as compared to 20-OH-ecdysone and 0.1 in com ­ parison to ecdysone. Both substances exert m orphological effects similar to those observed with 20-OH-ecdysone. Like m oulting horm ones both brassinosteroids inhibit chitin synthesis. However, these effects were observed only at rather high concentrations (10-5 to 10"4 m) which were cytotoxic for 22 5,23 S'-homobrassinolide. 
  Reference    Z. Naturforsch. 47c, 280—2 (1992); received October 1/D ecem ber 3 1991 
  Published    1992 
  Keywords    Ecdysteroid Receptor, Acetylcholinesterase, Chitin Synthesis, Brassinosteroids 
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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0280.pdf 
 Identifier    ZNC-1992-47c-0280 
 Volume    47 
2Author    Jürgen Schmidt, Frank Böhme, G. Ünter, AdamRequires cookie*
 Title    24-Epibrassinolide from Gypsophila perfoliata  
 Abstract    The scarce 24-epibrassinolide could be identified from seeds of G ypsophila perfoliata L. by GC/MS as the only brassinosteroid present. Furtherm ore, the A7-phyto-sterols ergost-7-en-3ß-ol, spinasterol and 22-dihydro-spinasterol were found as main sterols in the same plant material. 
  Reference    Z. Naturforsch. 51c, 897—899 (1996); received July 9/ 
  Published    1996 
  Keywords    Gypsophila perfoliata L, Caryophyllaceae, Seeds, Brassinosteroids, 24-Epibrassinolide 
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 TEI-XML for    default:Reihe_C/51/ZNC-1996-51c-0897_n.pdf 
 Identifier    ZNC-1996-51c-0897_n 
 Volume    51 
3Author    Jürgen Schmidt3, Klaus Richter6, Brunhilde Voigt3, Günter Adam3Requires cookie*
 Title    Metabolic Transformation of the Brassinosteroid 24-£/?i-castasterone by the Cockroach Periplaneta americana  
 Abstract    A fter feeding of 24-ep/-castasterone to the cockroach Periplaneta americana an organ-specific epimerization of the brassinosteroid to 2,24-d/ep/-castasterone could be detected in fem ale insects. The m etabolite being observed only in the ovaries and not in the testes of the insect was identified by GC/M S in comparison with a synthesized authentic sample. Con­ trary, 24-ep/-brassinolide is not m etabolized in the sexual organs of Periplaneta americana. This is the first evidence of a m etabolic transformation of a brassinosteroid in insects. 
  Reference    Z. Naturforsch. 55c, 233 (2000); received November 2/November 29 1999 
  Published    2000 
  Keywords    Periplaneta americana, Brassinosteroids, M etabolic Transformation 
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 TEI-XML for    default:Reihe_C/55/ZNC-2000-55c-0233.pdf 
 Identifier    ZNC-2000-55c-0233 
 Volume    55