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Ion distribution in leaf cells of Egeria densa
1Department of Ultrastructural Pathology and Electron Microscopy, Central Institute of Occupational Medicine of the GDR, Berlin.
Acta Histochemica. Supplementband
|January 1, 1990
Abstract:
The lement concentrations of intracellular compartments of leaf cells of Egeria densa are estimated by X-ray microanalysis. Ultrathin frozen-dried sections are used in TEM mode. The concentrations of Na, Mg, P, Cl, K, and Ca are determined in the cell wall, cytoplasm and chloroplasts. The cell wall represents a Donnan free space with a negative fixed charge concentration of 360 mval/l water. The water fraction of the cytoplasm is between 85 and 90% and strikes the bounds of possibility of that method.