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    Microbial community composition of deep-sea corals from the Red Sea provides insight into functional adaption to a unique environment

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    Authors
    Röthig, Till
    Yum, Lauren K.
    Kremb, Stephan G.
    Roik, Anna
    Voolstra, Christian R.
    Affiliation
    King Abdullah University of Science and Technology (KAUST)
    Issue Date
    2017-03-17
    
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    Abstract
    Microbes associated with deep-sea corals remain poorly studied. The lack of symbiotic algae suggests that associated microbes may play a fundamental role in maintaining a viable coral host via acquisition and recycling of nutrients. Here we employed 16 S rRNA gene sequencing to study bacterial communities of three deep-sea scleractinian corals from the Red Sea, Dendrophyllia sp., Eguchipsammia fistula, and Rhizotrochus typus. We found diverse, species-specific microbiomes, distinct from the surrounding seawater. Microbiomes were comprised of few abundant bacteria, which constituted the majority of sequences (up to 58% depending on the coral species). In addition, we found a high diversity of rare bacteria (taxa at <1% abundance comprised >90% of all bacteria). Interestingly, we identified anaerobic bacteria, potentially providing metabolic functions at low oxygen conditions, as well as bacteria harboring the potential to degrade crude oil components. Considering the presence of oil and gas fields in the Red Sea, these bacteria may unlock this carbon source for the coral host. In conclusion, the prevailing environmental conditions of the deep Red Sea (>20 °C, <2 mg oxygen L−1) may require distinct functional adaptations, and our data suggest that bacterial communities may contribute to coral functioning in this challenging environment.
    Citation
    Röthig, T. et al (2017) 'Microbial community composition of deep-sea corals from the Red Sea provides insight into functional adaption to a unique environment’, Scientific Reports, 7(1). Doi: 10.1038/srep44714
    Publisher
    Nature Research
    Journal
    Scientific Reports
    URI
    http://hdl.handle.net/10545/623315
    DOI
    10.1038/srep44714
    Additional Links
    http://www.nature.com/articles/srep44714
    Type
    Article
    Language
    en
    ISSN
    2045-2322
    ae974a485f413a2113503eed53cd6c53
    10.1038/srep44714
    Scopus Count
    Collections
    Environmental Sustainability Research Centre

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