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Comparative evaluation of early and long-term plant cell reactions under the combination of short-time and chronic impact of 232Th and Cd

Evseeva T.I., Geraskin S.A., Khramova E.S.

 


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The short-time (30 hours) and chronic (30 days) 232Th and Cd combined action on Tradescantia and Allium cepa plants was investigated. The 232Th ion concentration was equal to 0.18 mg/l and Cd ion – to 60 mg/l. The early response of both somatic and generative plant cells on Th and Cd combined action was shown to appear in cytogenetic damage frequency synergic increase. The level of genotoxic and cytotoxic long-term effects turned out to be lower than of the additive one both under the chronic as under the short-time action. These similar in result responses occur on different biological organization levels: in the case of short-time action the effects observed are detected by the intracellular compensatory processes, and in the case of chronic action by the mass death of the most damaged buds in the inflorescence.

Tsitologiya i Genetika 2003, vol. 37, no. 3, pp. 61-66



Evseeva T.I., Geraskin S.A., Khramova E.S. Comparative evaluation of early and long-term plant cell reactions under the combination of short-time and chronic impact of 232Th and Cd, Tsitol Genet., 2003, vol. 37, no. 3, pp. 61-66.




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