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http://hdl.handle.net/10261/189768
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dc.contributor.author | Yakimov, Michail M. | - |
dc.contributor.author | Cono, Violetta la | - |
dc.contributor.author | Spada, G. | - |
dc.contributor.author | Bortoluzzi, Stefania | - |
dc.contributor.author | Messina, Enzo | - |
dc.contributor.author | Smedile, Francesco | - |
dc.contributor.author | Arcadi, Erika | - |
dc.contributor.author | Borghini, M. | - |
dc.contributor.author | Ferrer, Manuel | - |
dc.contributor.author | Schmitt-Kopplin, Philippe | - |
dc.contributor.author | Hertkorn, Norbert | - |
dc.contributor.author | Cray, J. A. | - |
dc.contributor.author | Hallsworth, J. E. | - |
dc.contributor.author | Golyshin, Peter N. | - |
dc.contributor.author | Giuliano, Laura | - |
dc.date.accessioned | 2019-09-03T10:30:45Z | - |
dc.date.available | 2019-09-03T10:30:45Z | - |
dc.date.issued | 2015-02 | - |
dc.identifier.citation | Environmental Microbiology 17(2): 364-382 (2015) | - |
dc.identifier.issn | 1462-2912 | - |
dc.identifier.uri | http://hdl.handle.net/10261/189768 | - |
dc.description.abstract | Within the complex of deep, hypersaline anoxic lakes (DHALs) of the Mediterranean Ridge, we identified a new, unexplored DHAL and named it ‘Lake Kryos’ after a nearby depression. This lake is filled with magnesium chloride (MgCl2)‐rich, athalassohaline brine (salinity > 470 practical salinity units), presumably formed by the dissolution of Messinian bischofite. Compared with the DHAL Discovery, it contains elevated concentrations of kosmotropic sodium and sulfate ions, which are capable of reducing the net chaotropicily of MgCl2‐rich solutions. The brine of Lake Kryos may therefore be biologically permissive at MgCl2 concentrations previously considered incompatible with life. We characterized the microbiology of the seawater–Kryos brine interface and managed to recover mRNA from the 2.27–3.03 M MgCl2 layer (equivalent to 0.747–0.631 water activity), thereby expanding the established chaotropicity window‐for‐life. The primary bacterial taxa present there were Kebrit Deep Bacteria 1 candidate division and DHAL‐specific group of organisms, distantly related to Desulfohalobium. Two euryarchaeal candidate divisions, Mediterranean Sea Brine Lakes group 1 and halophilic cluster 1, accounted for > 85% of the rRNA‐containing archaeal clones derived from the 2.27–3.03 M MgCl2 layer, but were minority community‐members in the overlying interface‐layers. These findings shed light on the plausibility of life in highly chaotropic environments, geochemical windows for microbial extremophiles, and have implications for habitability elsewhere in the Solar System. | - |
dc.description.sponsorship | This work was performed with the financial support of CNR in frames of the EU FP7 Projects MAMBA (KBBE‐2009‐2B‐226977) and MicroB3 (OCEAN 2011‐2‐287589). JAC was supported by funding received from the Department of Agriculture and Rural Development (Northern Ireland). | - |
dc.publisher | John Wiley & Sons | - |
dc.relation | info:eu-repo/grantAgreement/EC/FP7/226977 | - |
dc.rights | closedAccess | - |
dc.title | Microbial community of the deep-sea brine Lake Kryos seawater-brine interface is active below the chaotropicity limit of life as revealed by recovery of mRNA | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1111/1462-2920.12587 | - |
dc.relation.publisherversion | https://doi.org/10.1111/1462-2920.12587 | - |
dc.identifier.e-issn | 1462-2920 | - |
dc.date.updated | 2019-09-03T10:30:45Z | - |
dc.description.version | Peer Reviewed | - |
dc.language.rfc3066 | eng | - |
dc.contributor.funder | Centre National de la Recherche Scientifique (France) | - |
dc.contributor.funder | European Commission | - |
dc.contributor.funder | Department of Agriculture and Rural Development (Northern Ireland) | - |
dc.relation.csic | Sí | - |
dc.identifier.funder | http://dx.doi.org/10.13039/100009748 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100000780 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100004794 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | No Fulltext | - |
item.cerifentitytype | Publications | - |
item.openairetype | artículo | - |
item.grantfulltext | none | - |
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