Enhanced mercury tolerance in marine mussels and relationship to low molecular weight, mercury-binding proteins

1982 
Abstract Pre-exposure of marine mussels to low levels of mercury (0.5 μg l −1 and less) enhanced their tolerance to more toxic levels. Seawater mercury concentrations similar to our experimental pre-exposure levels have been reported in mercury-contaminated areas where mussels presently exist. A higher pre-exposure concentration (5 μg l −1 ) was not effective in inducing enhanced mercury tolerance. The relative effectiveness of pre-exposure concentration in inducing enhanced tolerance was related to induction of mercury-binding proteins, the degree of saturation of mercury on the proteins, and the extent of binding of mercury to other subcellular fractions.
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