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  • 1
    Electronic Resource
    Electronic Resource
    In situ immobilization of heavy metals with tetraethylenepentamine (tetren) in natural soils and its effect on toxicity and plant growth (1983)
    Springer
    Plant and soil 70 (1983), S. 59-68 
    Details
    ISSN: 1573-5036
    Keywords: Cation exchange ; Copper ; Copper complex ; Copper-64 ; Corn ; Cyperus papyrus ; Papyrus ; Tetraethylenepentamine ; Tetren ; Transport ; Xylem ; Zea mays L
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The consequences of complex formation with tetren (tetraethylenepentamine) for the uptake and mobility of copper in the plant is studied. Short term supply of double labelled Cu-tetren (64Cu,14C-tetren) in nutrient solution to corn plants (Zea mays L., cv. spec.) indicates a stoichiometric uptake of the 1-1 complex. This is reflected in the increased shoot/root ratio of the64Cu-content (two orders of magnitude) resulting from an enhanced mobility of the complexed Cu in the plant. Increasing Cu-concentrations reduce the uptake of tetren, and an interaction between the uptake of tetren and Cu-tetren is demonstrated. The changed mobility of the64Cu-tetren complex is shown in more detail using cut shoots of papyrus plants (Cyperus papyrus L. cv. spec.) andin vivo detection of the64Cu radiation during transport. Results are discussed in terms of the effect of complex formation on the cation exchange process during xylem transport.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374750
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    In situ immobilization of heavy metals with tetraethylenepentamine (tetren) in natural soils and its effect on toxicity and plant growth (1983)
    Springer
    Plant and soil 70 (1983), S. 49-57 
    Details
    ISSN: 1573-5036
    Keywords: Copper ; Copper complex ; Corn ; Heavy metals ; Nutrient solutions ; Tetraethylenepentamine ; Tetren ; Zea mays L ; Zinc ; Zinc complex
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Complex formation of copper with tetraethylenepentamine (tetren) has some pronounced effects on the rate of uptake of the metal in corn, grown on nutrient solutions. At normal copper levels (0.02 ppm) in the medium, complex formation leads to a nearly hundredfold decrease in the rate of uptake, growth rate being slightly improved. Similar effects are observed at high copper levels (0.05 and 1 ppm) in which case the growth rate, severely affected in the absence of tetren, can be restored to normal values. High excess of tetren in the medium leads to copper-deficiency. Evidence is presented that the metal is taken up and translocated to the shoot as a metal complex and that its rate of translocation through the xylem is higher than for the aqueous ion. The effects in the case of zinc are similar although somewhat less marked.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374749
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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