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The Absorption of Zinc and Other Metals by the Brown Seaweed Laminaria Digitata

Published online by Cambridge University Press:  11 May 2009

G. W. Bryan
G. W. Bryan
Affiliation:
The Plymouth Laboratory
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Extract

The absorption of zinc has been studied in the brown seaweed Laminaria digitata (Huds.) Lamour., with use of the radionuclide 65Zn and atomic absorption analysis. No evidence of the regulation of zinc by the plant has been found. Absorption of zinc or 65Zn is a gradual process of accumulation which may continue throughout the life of the plant and is not accompanied by the exchange of zinc. As a result, once it has been absorbed, zinc or 65Zn shows little tendency to be lost from the plant. The amounts of zinc or 65Zn which can be accumulated from sea water containing different concentrations of zinc and the effects on these of growth, light and competition from other metals have been studied. Possible sites at which zinc might be bound have been discussed, and the experimental results have been compared with the situation found in the field.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 49 , Issue 1 , February 1969 , pp. 225 - 243
Copyright
Copyright © Marine Biological Association of the United Kingdom 1969

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