Abstract
Pseudomonas pseudoalcaligenes S1, a marine bacterium, exhibited strong resistance to a high concentration of Hg2+ and remarkable Hg2+ bioaccumulation capacity. Here, we report the 6.9-Mb genome sequence of P. pseudoalcaligenes S1, which may help clarify its phylogenetic status and provide further understanding of the mechanisms of mercury bioremediation in a marine environment.
Highlights
Bacteria have been used for bioremediation because they have a high capability for heavy metal uptake under a wide range of external conditions, such as high salinity and the presence of a variety of ions in the marine environment [1,2,3]
The high Hg2ϩ accumulation capacity of P. pseudoalcaligenes S1 suggested that the mercuric reduction strategy cannot completely explain its tolerance of high Hg2ϩ concentrations
We performed whole-genome sequencing of P. pseudoalcaligenes S1 in an attempt to provide the genetic basis for further understanding the mechanisms of mercury bioremediation and resistance
Summary
Bacteria have been used for bioremediation because they have a high capability for heavy metal uptake under a wide range of external conditions, such as high salinity and the presence of a variety of ions in the marine environment [1,2,3]. P. pseudoalcaligenes S1 was preliminarily investigated by us [4] for its bioaccumulation and attractive mercury resistance which has the highest value reported so far [5, 6]. It has generally been accepted that the mercury resistance of microorganisms depends on the intracellular expression of MerA, a mercuric reductase conferring cells to reduce Hg2ϩ to Hg0 [7].
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