Influence of calcium on sodium and potassium absorption by fresh and aged bean stem slices.

@article{Rains1970InfluenceOC,
  title={Influence of calcium on sodium and potassium absorption by fresh and aged bean stem slices.},
  author={D. William Rains and Robert A. Floyd},
  journal={Plant physiology},
  year={1970},
  volume={46 1},
  pages={93-8}
}
The influence of Ca on the aging processes of bean stem (Phaseolus vulgaris) slices and on the absorption of K and Na by fresh and aged slices was investigated. In the presence of Ca, fresh tissue showed a preferential Na uptake. The preference for Na over K resulted from a differential depressive effect of Ca on absorption of these two ions. In aged tissue Na uptake was also depressed, but K absorption was accelerated, with a net result of a much greater absorption of K than Na.The presence of… CONTINUE READING