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Uptake and transport of lead by perennial ryegrass from flowing solution culture with a controlled concentration of lead

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Summary

Perennial ryegrass was grown in flowing solution culture in a glasshouse, and during February lead was added to the nutrient solution and held at a constant concentration; uptake and transport of lead were followed in conditions of low intensity daylight or higher intensity artificial light. Uptake of lead by the roots was most rapid during the first 4 days after addition to the nutrient solution. After this time there was a steady increase in uptake per g dry weight of root with plants grown in artificial light having a much higher rate of uptake than plants grown in daylight. Roots always contained more lead than the corresponding shoots and concentration was always greater in the roots than in the shoots. The concentration in both roots and shoots increased with time but that in plants grown in artificial light was higher than that in plants grown in daylight. Two phases of uptake were identified, an initial rapid phase which is probably an exchange phenomenon, and a slow sustained phase which may be under metabolic control. A lower proportion of the total lead taken up remained in the roots of plants grown in artificial light than in those grown in daylight. This difference may have resulted from differences in (i) the production of organic carriers and/or (ii) transpiration. re]19750930

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Authors and Affiliations

  1. The Grassland Research Institute, Hurley, Maidenhead, Berks

    S. C. Jarvis, L. H. P. Jones & C. R. Clement

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  1. S. C. Jarvis
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  2. L. H. P. Jones
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  3. C. R. Clement
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Jarvis, S.C., Jones, L.H.P. & Clement, C.R. Uptake and transport of lead by perennial ryegrass from flowing solution culture with a controlled concentration of lead. Plant Soil 46, 371–379 (1977). https://doi.org/10.1007/BF00010093

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  • DOI: https://doi.org/10.1007/BF00010093

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