Keywords: Tradescantia pallida, gamma radiation, low dose, environmental pollution, biomonitoring, low radiation, bioindicators, ionising radiation, tropical climates, genotoxic agents, nuclear installations, nuclear safety
Effect of 137Cs gamma radiation on the system bioindicator Tradescantia pallida
The use of the bioindicator Tradescantia clone 4430 as a biomonitor is limited to a short period of time in regions of hot climate. This paper describes the use of Tradescantia pallida as a bioindicator, to verify its sensitivity to gamma radiation from a 137Cs source and to monitor places of low doses of ionising radiation in tropical climates. Specimens of the T. pallida were exposed to radiation for a period of 24, 36 or 48 h. The results show that the biological system offers a good alternative for biomonitoring of gamma radiation at low doses and is an excellent mechanism for fast and simple acquisition of data, and thus is capable of anticipating abnormalities produced by genotoxic agents, favouring its use in monitoring in nuclear installations.