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
