Journal
MICROBIOLOGY AND MOLECULAR BIOLOGY REVIEWS
Volume 79, Issue 1, Pages 61-80Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/MMBR.00037-14
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- EU Marie Curie International Incoming Fellowship (MC-IIF) [103922]
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In nature, selenium is actively cycled between oxic and anoxic habitats, and this cycle plays an important role in carbon and nitrogen mineralization through bacterial anaerobic respiration. Selenium-respiring bacteria (SeRB) are found in geographically diverse, pristine or contaminated environments and play a pivotal role in the selenium cycle. Unlike its structural analogues oxygen and sulfur, the chalcogen selenium and its microbial cycling have received much less attention by the scientific community. This review focuses on microorganisms that use selenate and selenite as terminal electron acceptors, in parallel to the well-studied sulfate-reducing bacteria. It overviews the significant advancements made in recent years on the role of SeRB in the biological selenium cycle and their ecological role, phylogenetic characterization, and metabolism, as well as selenium biomineralization mechanisms and environmental biotechnological applications.
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