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    Zonation of Microbial Communities by a Hydrothermal Mound in the Atlantis II Deep (the Red Sea)

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    Type
    Article
    Authors
    Wang, Yong
    Li, Jiang Tao
    He, Li Sheng
    Yang, Bo
    Gao, Zhao Ming
    Cao, Hui Luo
    Batang, Zenon B. cc
    Al-Suwailem, Abdulaziz M.
    Qian, Pei-Yuan cc
    KAUST Department
    Coastal and Marine Resources Core Lab
    Computational Bioscience Research Center (CBRC)
    Date
    2015-10-20
    Permanent link to this record
    http://hdl.handle.net/10754/583930
    
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    Abstract
    In deep-sea geothermal rift zones, the dispersal of hydrothermal fluids of moderately-high temperatures typically forms subseafloor mounds. Major mineral components of the crust covering the mound are barite and metal sulfides. As a result of the continental rifting along the Red Sea, metalliferous sediments accumulate on the seafloor of the Atlantis II Deep. In the present study, a barite crust was identified in a sediment core from the Atlantis II Deep, indicating the formation of a hydrothermal mound at the sampling site. Here, we examined how such a dense barite crust could affect the local environment and the distribution of microbial inhabitants. Our results demonstrate distinctive features of mineral components and microbial communities in the sediment layers separated by the barite crust. Within the mound, archaea accounted for 65% of the community. In contrast, the sediments above the barite boundary were overwhelmed by bacteria. The composition of microbial communities under the mound was similar to that in the sediments of the nearby Discovery Deep and marine cold seeps. This work reveals the zonation of microbial communities after the formation of the hydrothermal mound in the subsurface sediments of the rift basin.
    Citation
    Zonation of Microbial Communities by a Hydrothermal Mound in the Atlantis II Deep (the Red Sea) 2015, 10 (10):e0140766 PLOS ONE
    Publisher
    Public Library of Science (PLoS)
    Journal
    PLoS ONE
    DOI
    10.1371/journal.pone.0140766
    PubMed ID
    26485717
    Additional Links
    http://dx.plos.org/10.1371/journal.pone.0140766
    ae974a485f413a2113503eed53cd6c53
    10.1371/journal.pone.0140766
    Scopus Count
    Collections
    Articles; Coastal and Marine Resources Core Lab; Computational Bioscience Research Center (CBRC)

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