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Cadmium and the phosphate granules in Littorina littorea

Published online by Cambridge University Press:  11 May 2009

J. A. Nott  and
W. J. Langston
J. A. Nott
Affiliation:
Marine Biological Association, The Laboratory, Citadel Hill, Plymouth, PL1 2PB
W. J. Langston
Affiliation:
Marine Biological Association, The Laboratory, Citadel Hill, Plymouth, PL1 2PB
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Extract

Previous studies with the marine gastropod Littorina littorea have shown that cadmium is concentrated in the digestive gland and that cytosolic metallothionein-like proteins sequester a large proportion of the accumulated burden. In the current investigation, an electron microscope cryo-preparation method and X-ray microanalysis have revealed that some cadmium, in association with sulphur, is localised in the region of the limiting membrane of the mineralised granules which detoxify certain metals as an insoluble phosphate salt. It appears, therefore, that there could be interaction between the sulphur and phosphate systems for binding metals within the basophil cells of the digestive epithelium.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 69 , Issue 1 , February 1989 , pp. 219 - 227
Copyright
Copyright © Marine Biological Association of the United Kingdom 1989

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