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Ultrastructural damage by cadmium in a marine dinoflagellate prorocentrum micans






Journal of Protozoology 28(3): 308-313

Ultrastructural damage by cadmium in a marine dinoflagellate prorocentrum micans

P. micans Ehrenberg, a free-living marine dinoflagellate, was used to test the intracellular toxic action of Cd [an industrial pollutant]. The cells were cultivated in Erdschreiber medium, with Cd concentrations of 10-100 ppb. Thin sections of treated cells, examined ultramicroscopically, exhibited vacuolations, increased numbers of lysosomes and severe mitochondrial damage. The first 2 alterations are a general response to toxicity; the 3rd is Cd-specific. Although some chloroplasts were affected by Cd, they were not very sensitive to its action. The nuclear apparatus was not morphologically affected.

Accession: 006857870

DOI: 10.1111/j.1550-7408.1981.tb02856.x

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