Role of the Accompanying Anion in the Effect of Calcium Salts on Potassium Uptake by Excised Barley Roots
AUTOR(ES)
Tadano, Toshiaki
RESUMO
The effect of addition of Ca salts on accumulation of K from 5 mN KCl or K2SO4 solutions was found to depend on whether Ca was added as Cl or SO4 salt. Chloride as well as K uptake was increased when Ca and Cl concentrations in culture solutions were increased. Pre-treatment of roots with CaCl2 stimulated subsequent K uptake from K2SO4 solutions as compared to pre-treatment with distilled water but pre-treatment with CaSO4 did not. The results indicate that addition of Ca salts to KCl or K2SO4 solutions increased anion uptake and the effect of the addition of the Ca salts on K uptake was in part the result of increased anion uptake and not entirely a direct effect of Ca.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=396316Documentos Relacionados
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