Data about wide spectrum of ultrastructural deviations of Chlamydomonas cf. reinhardtii Dang. (Chlorophyta) cells under influence of different concentrations of non-ionic surfactant, in particular of the oxyetyleted ether of polyethylene glycol was presented. Clear dependence of a degree of ultrastructural changes of the cellular compartments in dependence from concentration of surface-active substances and duration of their action on the alga cells was shown. It offers the possibilities of using of cytological analysis for evaluation of influence of chemical pollutants on the state of the cells of planktonic algae.

Keywords: non-ionic detergents, alga, Chlamydomonas reinhardtii, ultrastructure

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