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  • 1
    Electronic Resource
    Electronic Resource
    Increased activity of enzymes of the tricarboxylic acid cycle in response to aldosterone in the toad bladder (1968)
    Springer
    Pflügers Archiv 300 (1968), S. 213-225 
    Details
    ISSN: 1432-2013
    Keywords: Biological Transport, active ; Aldosterone ; Sodium ; Enzymes ; Tricarboxylic Acid Cycle ; Aktiver Transport ; Aldosteron ; Natrium ; Enzyme ; Trikarbonsäurecyclus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 1. The activities of condensing enzyme, isocitrate dehydrogenase, glutamate dehydrogenase, glutamate-oxaloacetate transaminase, and malate dehydrogenase increase in toad bladder mucosa in vitro 2 hours after addition of d-aldosterone (10−7 M) to the serosal bathing medium whereas no change in activity of lactate dehydrogenase, aldolase and pyruvate kinase was noted. 2. The increase in enzyme activities has approximately the same time course as the stimulation of sodium transport by aldosterone. 3. The response of sodium transport to d-aldosterone was studied in the same tissue which was assayed for enzymatic activity. A significant, positive correlation between relative increments in sodium transport and in condensing enzyme activity per milligram of mucosal protein was found to exist. 4. The effects of aldosterone on both sodium transport and enzyme enhancement were abolished by actinomycin D and puromycin. 5. The increase in activity of mitochondrial enzymes due to d-aldosterone was not dependent on the presence of sodium in the mucosal bathing medium and hence was independent of any possible direct stimulatory effect of transepithelial sodium transport on enzyme activity. 6. The increase in activity of enzymes contributing to the supply of aerobic energy for the enhanced sodium transport induced by aldosterone is regarded as complementary to an independent action of the hormone to increase the entry of sodium into the transport process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00364295
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Stand treatment and sampling time of hardwood foliage (1979)
    Springer
    Plant and soil 51 (1979), S. 535-550 
    Details
    ISSN: 1573-5036
    Keywords: Acer saccharum ; Betula alleghaniensis ; Foliar analysis ; Micro elements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A 70-year-old thinned northeastern Fagus-Betula-Acer stand in the Adirondack Mountains of New York was fertilized with varying combinations of N, P, K and lime.Acer saccharum Marsh. andBetula alleghaniensis Brit. foliage was collected periodically during the frost-free season and analyzed for foliage areas and weights, and levels of ash, Mn, Na, Fe, Zn, Al, Cu and Co. Comparisons were made within species, and among treatments, expressed as concentration on dry weight and ash bases, and as contents on per leaf weight and area bases. Elemental composition trends over time were examined to determine treatment effects and optimum sampling period.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02277574
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Stand treatment and sampling time of hardwood foliage (1979)
    Springer
    Plant and soil 51 (1979), S. 515-533 
    Details
    ISSN: 1573-5036
    Keywords: Acer saccharum ; Betula alleghaniensis ; Foliar analysis ; Macro-elements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A 70-year-old thinned northeastern Fagus-Betula-Acer stand in the Adirondack Mountains of New York was fertilized with varying combinations of N, P, K and lime.Acer saccharum Marsh. andBetula alleghaniensis Brit. foliage was collected periodically during the frost-free season and analyzed for foliage areas and weights, and levels of ash, N, P, K, Ca, Mg. Comparisons were made within species, and among treatments, expressed as concentrations on dry weight and ash bases, and as contents on per leaf weight and area bases. Elemental composition trends over time were examined to determine treatment effects and optimum sampling period.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02277573
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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