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Further evidence for a direct cytoplasmatic pathway for Rb transport from the external solution to the xylem in barley seedlings

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Summary

The relation between the amount of Rb-ions present in the cytoplasm and the rate of upward translocation of Rb was investigated in young intact barley plants.

A positive correlation between the rate of transport of Rb to the shoot and the cytoplasmatic Rb-content became apparent when the latter was varied experimentally by manipulating either the external Ca- or the outward Rb-concentration.

These experiments provided no evidence of competition between root accumulation of Rb and upward Rb-transfer for a limited amount of Rb-ions entering the root system.

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Authors and Affiliations

  1. Mineral Nutrition Research Group, Botanical Institute of the University of Leyden, the Netherlands

    J. J. M. Hooymans

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  1. J. J. M. Hooymans
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Hooymans, J.J.M. Further evidence for a direct cytoplasmatic pathway for Rb transport from the external solution to the xylem in barley seedlings. Plant Soil 29, 92–101 (1968). https://doi.org/10.1007/BF01393913

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  • DOI: https://doi.org/10.1007/BF01393913

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