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KMID : 0379119950230010071
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Korean Journal of Mycology
1995 Volume.23 No. 1 p.71 ~ p.79
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Physio - biochemical Detoxification Mechanism against Cadmium in Rhizopus oryzae
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Abstract
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The mechanism of cadmium adaptation and detoxification in Rhizopus oryzae was investigated. The lag phase was lengthened as the concentration of cadmium increased. Detoxication of cadmium were postulated to be primarily operated by the induction of two cadmium binding proteins and increment of inorganic polyphosphate pools in adaptation phase. After adaptation, inorganic polyphosphate system has been involved in turnover and compartmentalization. The secondary system for cadmium adaptation and detoxification might be derepression of ACPase activity and the synthesis of phosphatidyl serine. It has been considered that the overall changes for cadmium adaptation and detoxification eventually influence on the morphology, resulting in the dispersed filamentous type which may be the most advantageous form.
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