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  • Articles: DFG German National Licenses  (2)
  • General Chemistry  (1)
  • Viruskonzentration  (1)
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  • Articles: DFG German National Licenses  (2)
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Years
  • 1
    ISSN: 1871-4528
    Keywords: Viruskonzentration ; semiquantitativer ELISA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Summary The suitability of in vitro plants for determining relative (quantitative) PVX resistance was examined using resistant (‘Schwalbe’, ‘Karella N’) and susceptible (‘Turbella N’, ‘Ogonjok’) genotypes. They were grown in non-sterile gravel augmented with 2 ml of 0.45% Wopil solution (a mixture of nutrient salts with trace elements; VEB Chemiekombinat, Bitterfeld, DDR) and mechanically inoculated (glass rod) with the ‘Erstling’ isolate of PVX. The relative virus concentration in 10–15 in vitro plantlets of each genotype was estimated quantitatively using ELISA after 7, 14, 21, 28, 35 and 42 days (Fig. 1). The resistant genotypes had significantly higher proportions of plants with restricted virus multiplication (E405 nm≤1.0) than the susceptible ones: means over five experiments were 82 and 83% for the resistant genotypes (70...90%) and 19 and 20% for the susceptible (0...40%)-Fig. 2. Estimation of the virus concentration in primary infected pot and secondary infected field plants of the four tested genotypes showed good agreement with established resistance rankings.
    Notes: Zusammenfassung In-vitro-Pflanzen von PVX-resistenten (‘Schwalbe’, ‘Karella N’) und--anfälligen Genotypen (‘Turbella N’, ‘Ogonjok’) in unsteriler Kultur auf Kiessubstrat wurden mechanisch inokuliert (Isolat PVX-‘Erstling’, Glasstäbchen). Eine quantitative Abschätzung der relativen Viruskonzentration mittels ELISA 7...42 Tage nach der Inokulation (dpi) ergab bei den resistenten Genotypen im Mittel von 5 Versuchen mit 82 und 83% (70...90%) einen gegenüber den anfälligen Formen (19 und 20%, 0...40%) signifikant höheren Anteil Pflanzen mit gehemmter Virusvermehrung (E405 nm≤1,0). Eine damit übereinstimmende Einstufung erfuhren die 4 geprüften Genotypen bei Abschätzung der relativen Viruskonzentration an primärinfizierten Topf- und sekundärinfizierten Freilandpflanzen.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 3 (1964), S. 325-332 
    ISSN: 0570-0833
    Keywords: Chelates ; Ligands ; Macromolecules ; N ligands ; Chalcogen ligands ; Metal enrichment ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Macromolecular chelating agents possessing high selectivity for rare metal ions have been synthetized. One of these, with the complexing group of glyoxal bis-2-mercaptoanil, is suitable for selective enrichment of gold from sea-water, while another is suitable for copper and uranium. - The enrichment of metallic ions in nature is discussed, taking hemocyanin as an example. - Both stereochemistry and isomerism, as well as cyclic conjugation during chelate formation, may influence the selectivity of complexing agents. The quasi-aromatic properties of chelates are discussed.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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