Specific enrichment of hyperthermophilic electroactive Archaea from deep-sea hydrothermal vent on electrically conductive support
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Abstract
While more and more investigations are done to isolate hyperthermophilic exoelectrogenic communities from environments, none have been performed yet on deep-sea hydrothermal vent. Samples of black smoker chimney from Rainbow site on the Atlantic mid-oceanic ridge have been harvested for enriching exoelectrogens in microbial electrolysis cells under hyperthermophilic (80°C) condition. Two enrichments have been performed: one from direct inoculation of crushed chimney and the other one from inoculation of a pre-cultivation on iron (III) oxide. In both experiments, a current production was observed from 2.4 A/m 2 to 5.8 A/m 2 with a set anode potential of +0.05 vs SHE. Taxonomic affiliation of the exoelectrogen communities obtained exhibited a specific enrichment of Archaea from Thermococcales and Archeoglobales orders on the electrode, even when both inocula were dominated by Bacteria .Keywords
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- Published version: Bioresource Technology, 259, 304.
This publication has 44 references indexed in Scilit:
- Sediment Microbial Diversity of Three Deep-Sea Hydrothermal Vents Southwest of the AzoresMicrobial Ecology, 2017
- Hydrogen production by the hyperthermophilic bacterium Thermotoga maritima part I: effects of sulfured nutriments, with thiosulfate as model, on hydrogen production and growthBiotechnology for Biofuels, 2016
- Methods for enrichment of novel electrochemically-active microorganismsBioresource Technology, 2015
- Microbial Sulfur Cycle in Two Hydrothermal Chimneys on the Southwest Indian RidgemBio, 2014
- A Thermophilic Gram-Negative Nitrate-Reducing Bacterium, Calditerrivibrio nitroreducens, Exhibiting Electricity Generation CapabilityEnvironmental Science & Technology, 2013
- The microbiology of deep-sea hydrothermal vent plumes: ecological and biogeographic linkages to seafloor and water column habitatsFrontiers in Microbiology, 2013
- Microbial community structure of hydrothermal deposits from geochemically different vent fields along the Mid‐Atlantic RidgeEnvironmental Microbiology, 2011
- Thermodesulfatator atlanticus sp. nov., a thermophilic, chemolithoautotrophic, sulfate-reducing bacterium isolated from a Mid-Atlantic Ridge hydrothermal ventInternational Journal of Systematic and Evolutionary Microbiology, 2010
- C‐Type Cytochromes Wire Electricity‐Producing Bacteria to ElectrodesAngewandte Chemie, 2008
- Microbial fuel-cellsApplied Biochemistry and Biotechnology, 1993