1972
DOI: 10.1111/j.1399-3054.1972.tb03634.x
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Mechanisms of Sodium and Rubidium Uptake by Excised Barley Roots

Abstract: Accumulation of sodium and rubidium by excised barley roots was investigated. The concentration isotherm yielded one absorption shoulder. Nevertheless, it is suggested that two mechanisms take part in the uptake of sodium and rubidium: One non‐metabolic mechanism with an apparent participation at low external salt concentrations (< 1 mM) and at high concentrations (> 20 mM). Such a mechanism is almost unaffected by low temperature conditions and by metabolic inhibitors. Rubidium possesses a high affinity towar… Show more

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