The influence of cadmium and potassium on the level of cytogenetic effects induced by thallium-232 in Allium cepa root meristem

Evseeva T.I., Maystrenko T.A., Geraskin S.A., Belykh E.S.

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The influence of different concentrations of cadmium and potassium on the levels of mutagenic and cytotoxic effects induced by thallium-232 in Allium cepa root meristem has been studied. The combined action of ²³²Th (0.8 μМ) with cadmium in non-toxic (0.009 μМ) and toxic (5 μМ) concentrations resulted in sinergetic increase of the frequency of aberrant cells in Allium cepa root meristem. Decrease of the mutagenic effect to the additive level and antagonism with respect to the cytotoxic one was observed only at the certain concentrations of ²³²Th (0,8 μM) and Cd (0.09 μМ) and the time of impact 30 h. In contrast to the heavy metal cadmium the essential for plants potassium at all studied concentrations (0.008, 6, 13 мМ) decreased the number of cytogenetic aberrations in control experiments and under the effect of ²³²Th. The maximum protective effect of potassium was detected at the concentration 13 мМ.

Tsitologiya i Genetika 2006, vol. 40, no. 6, pp. 50-58

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Evseeva T.I., Maystrenko T.A., Geraskin S.A., Belykh E.S. The influence of cadmium and potassium on the level of cytogenetic effects induced by thallium-232 in Allium cepa root meristem, Tsitol Genet., 2006, vol. 40, no. 6, pp. 50-58.