Sodium Recirculation and Loss from Phaseolus vulgaris L. |
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Authors: | JACOBY B |
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Institution: | Department of Agricultural Botany, The Hebrew University Rehovot 76 100, Israel |
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Abstract: | In a split-root experiment, 22Na was supplied to Phaseolus vulgarisL. roots emerging from the stem, 2.5 cm above the main roots.Sodium exported from these upper roots was translocated a shortdistance upward in the stem and downward to the main roots.Most of the 22Na arriving in the main roots was lost to themedium. Sodium loss from P. vulgaris roots into KCI or NaCl was similarand was not affected by oligomycin. The results confirm a previous hypothesis regarding the mechanismof sodium exclusion from the tops of sodium non-accumulatorplants. Phaseolus vulgaris L., bean, sodium transport |
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