Construction of phytomonitoring systems for risk assessment of dioxins polluted environment.

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The environmental toxicity of dioxins is becoming more severe especially in Japan. The precise quantitative analysis of pollution levels of dioxins has been performed using a gas chromatograph-mass spectrometry ; however, this technique has the disadvantage of a high cost or a highly educated skill. In this study, the development of bioassay system for dioxins using dioxins-response genes found in the plant genome was proposed to investigate its efficiency for risk assessment of dioxins contamination. This bioassay system will be expected to be a good substitution for the instrumental analysis as the first step simple analysis method of dioxins in the environment.