The effect of various concentrations of copper, cadmium and lead to loss of cell motility and the dynamics of Dunaliella viridis Teodor. induced aggregation of cells. The introduction of ions of copper, lead and cadmium in the culture medium led to loss of mobility of cell Dunaliella, which depended on the concentration of metal ions in the medium. However, this dependence was not linear. The process of immobilization of cells developed over time in the case of copper and lead, and cadmium ions had to place the principle of "all or nothing". Ions of copper and lead induced aggregation of cells, which depended on the concentration of ions in the medium and incubation time. At the same time cadmium ions had no effect on the induction of aggregation of cells. All the metal ions can be divided into two groups: those inducing aggregation and did not induce aggregation of cells of Dunaliella viridis.

Keywords: Dunaliella viridis, cell aggregation induced by metal ions, copper ions, lead ions, cadmium ions

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