• Login
    View Item 
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Microbiome and ecology of a hot spring-microbialite system on the Trans-Himalayan Plateau

    Thumbnail
    View/Open
    Sci_Rep_10_5917a.pdf (2.463Mb)
    Date
    2020
    Author
    Roy, C.
    Rameez, M.J.
    Haldar, P.K.
    Peketi, A.
    Mondal, N.
    Bakshi, U.
    Mapder, T.
    Pyne, P.
    Fernandes, S.
    Bhattacharya, S.
    Roy, R.
    Mandal, Subhrangshu
    ONeill, W.K.
    Mazumdar, A.
    Mukhopadhyay, S.K.
    Mukherjee, Ambarish
    Chakraborty, Ranadhir
    Hallsworth, J.E.
    Ghosh, Wriddhiman
    Metadata
    Show full item record
    Abstract
    Little is known about life in the boron-rich hot-springs of Trans-Himalayas. Here, we explore the geomicrobiology of a 4438-m-high spring which emanates ~70 °C-water from a boratic microbialite called Shivlinga. Due to low atmospheric pressure, the vent-water is close to boiling-point so can entropically destabilize biomacromolecular systems. Starting from the vent, Shivlinga's geomicrobiology was revealed along the thermal gradients of an outflow-channel and a progressively-drying mineral matrix that has no running-water; ecosystem constraints were then considered in relation to those of entropically-comparable environments. The spring-water chemistry and sinter mineralogy were dominated by borates, sodium, thiosulfate, sulfate, sulfite, sulfide, bicarbonate, and other macromolecule-stabilizing (kosmotropic) substances. Microbial diversity was high along both of the hydrothermal gradients. Bacteria, Eukarya and Archaea constituted >98%, ~1% and <1% of Shivlinga's microbiome, respectively. Temperature constrained the biodiversity at ~50 °C and ~60 °C, but not below 46 °C. Along each thermal gradient, in the vent-to-apron trajectory,communities were dominated by Aquificae/Deinococcus-Thermus, then Chlorobi/Chloroflexi/Cyanobacteria, and finally Bacteroidetes/Proteobacteria/Firmicutes. Interestingly, sites of >45 °C were inhabited by phylogenetic relatives of taxa for which laboratory growth is not known at >45 °C. Shivlinga's geomicrobiology highlights the possibility that the system's kosmotrope-dominated chemistry mitigates against the biomacromolecule-disordering effects of its thermal-water.
    URI
    https://doi.org/10.1038/s41598-020-62797-z
    http://drs.nio.org/drs/handle/2264/8533
    Collections
    • Scholarly literature [9074]

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV