Potential for mercury reduction by microbes in the high Arctic

Article Abstract:

A kinetic redox model is used to examine the impact of microbial mercury reduction in the production of dissolved gaseous mercury (DGM) and also its role in mercury biogeochemistry in Arctic coastal waters. The results have highlighted the importance of microbial redox transformations in the biogeochemical cycling, toxicity and mobility of mercury in polar regions.

Arctic, Environmental aspects, Microorganisms, Mercury compounds

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Identification of a novel dioxygenase involved in metabolism of 0-xylene, toluene, and ethylbenzene by rhodococcus sp. Strain DK17

Article Abstract:

Two exact copies of genes encoding large and small subunits of an iron sulfur protein terminal oxygenase that re 6 kb apart from each other. RT-PCR experiments indicate that the two copies of the dioxygenase genes are operonic with the downstream putative atbolic genes and that both operons are induced by o-xylene.

Microbial metabolism, Bacteria

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