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| Cruz, Kimberly; Guezennec, Jean; Barkay, Tamar. |
| Bacteria employ adaptive mechanisms of mercury (Hg) tolerance to survive in environments containing elevated Hg concentrations. The potential of extracellular polysaccharides (EPS) production by bacteria as a mechanism of Hg tolerance has not been previously investigated. The objectives of this study were to determine if bacterial EPS sorb Hg, and if so does sorption provide protection against Hg toxicity. Purified EPS with different chemical compositions produced by bacterial isolates from microbial mats in French Polynesian atolls and deep-sea hydrothermal vents were assessed for Hg sorption. The data showed that EPS sorbed up to 82% of Hg from solution, that this sorption was dependent on EPS composition, and that sorption was a saturable mechanism. Hg... |
| Tipo: Text |
Palavras-chave: Mercury; Bacteria; Sorption; Tolerance; Exocellular polysaccharides. |
| Ano: 2017 |
URL: http://archimer.ifremer.fr/doc/00382/49348/49786.pdf |
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