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Concentration Dependent Uptake of Copper by Barley Roots
Author(s) -
VELTRUP WERNER
Publication year - 1976
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1976.tb04415.x
Subject(s) - plasmolysis , hordeum vulgare , copper , hordeum , chemistry , biophysics , botany , poaceae , plant roots , biochemistry , biology , cell wall , organic chemistry
The time course of the uptake of copper by excised barley roots ( Hordeum distichum L.) after 24 h shows other characteristics than after 2 h. A further investigation of the concentration dependent uptake of copper by intact roots and kinetic analysis demonstrates a biphasic pattern for 2 h uptake periods, and possibly monophasic behaviour for uptake periods of 20 min and 24 h. Plasmolysis data of cortex cells of barley roots indicate that concentrations above 80 μM Cu are unphysiological with regard to longer uptake periods.