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dc.contributor.authorBougouffa, Salim
dc.contributor.authorYang, J. K.
dc.contributor.authorLee, O. O.
dc.contributor.authorWang, Y.
dc.contributor.authorBatang, Zenon B.
dc.contributor.authorAl-Suwailem, Abdulaziz M.
dc.contributor.authorQian, P. Y.
dc.date.accessioned2015-05-18T21:53:15Z
dc.date.available2015-05-18T21:53:15Z
dc.date.issued2013-03-29
dc.identifier.citationDistinctive Microbial Community Structure in Highly Stratified Deep-Sea Brine Water Columns 2013, 79 (11):3425 Applied and Environmental Microbiology
dc.identifier.issn0099-2240
dc.identifier.pmid23542623
dc.identifier.doi10.1128/AEM.00254-13
dc.identifier.urihttp://hdl.handle.net/10754/554105
dc.description.abstractAtlantis II and Discovery are two hydrothermal and hypersaline deep-sea pools in the Red Sea rift that are characterized by strong thermohalo-stratification and temperatures steadily peaking near the bottom. We conducted comprehensive vertical profiling of the microbial populations in both pools and highlighted the influential environmental factors. Pyrosequencing of the 16S rRNA genes revealed shifts in community structures vis-à-vis depth. High diversity and low abundance were features of the deepest convective layers despite the low cell density. Surprisingly, the brine interfaces had significantly higher cell counts than the overlying deep-sea water, yet they were lowest in diversity. Vertical stratification of the bacterial populations was apparent as we moved from the Alphaproteobacteria-dominated deep sea to the Planctomycetaceae- or Deferribacteres-dominated interfaces to the Gammaproteobacteria-dominated brine layers. Archaeal marine group I was dominant in the deep-sea water and interfaces, while several euryarchaeotic groups increased in the brine. Across sites, microbial phylotypes and abundances varied substantially in the brine interface of Discovery compared with Atlantis II, despite the near-identical populations in the overlying deep-sea waters. The lowest convective layers harbored interestingly similar microbial communities, even though temperature and heavy metal concentrations were very different. Multivariate analysis indicated that temperature and salinity were the major influences shaping the communities. The harsh conditions and the low-abundance phylotypes could explain the observed correlation in the brine pools.
dc.publisherAmerican Society for Microbiology
dc.relation.urlhttp://aem.asm.org/cgi/doi/10.1128/AEM.00254-13
dc.rightsArchived with thanks to Applied and Environmental Microbiology
dc.titleDistinctive Microbial Community Structure in Highly Stratified Deep-Sea Brine Water Columns
dc.typeArticle
dc.contributor.departmentKAUST Global Collaborative Research Program
dc.contributor.departmentCoastal and Marine Resources Core Lab
dc.identifier.journalApplied and Environmental Microbiology
dc.identifier.pmcidPMC3648036
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDivision of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
kaust.personAl-Suwailem, Abdulaziz M.
kaust.personBatang, Zenon B.
refterms.dateFOA2018-06-13T10:05:12Z
dc.date.published-online2013-03-29
dc.date.published-print2013-06-01


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