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Hexavalent chromium induces gametogenesis in the freshwater alga Scenedesmus acutus
M G Corradi1, G Gorbi, M Bassi
1Department of Evolutive Biology, University of Parma, Italy.
Ecotoxicology and Environmental Safety
|March 1, 1995
Abstract:
The aggregates formed by Scenedesmus acutus cultivated in the presence of 1 mg/liter Cr(VI) persist even after 7 days of treatment. They were examined by fluorescence and electron microscopy and were found to be an early stage of sexual reproduction. They consist of four small cells deprived of a true cell wall and enclosed in a common envelope. When the envelope breaks up they are released in the culture medium as biflagellated mobile cells. These cells have been identified as gametes.

