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dc.contributor.authorRoy, C.
dc.contributor.authorRameez, M.J.
dc.contributor.authorHaldar, P.K.
dc.contributor.authorPeketi, A.
dc.contributor.authorMondal, N.
dc.contributor.authorBakshi, U.
dc.contributor.authorMapder, T.
dc.contributor.authorPyne, P.
dc.contributor.authorFernandes, S.
dc.contributor.authorBhattacharya, S.
dc.contributor.authorRoy, R.
dc.contributor.authorMandal, Subhrangshu
dc.contributor.authorONeill, W.K.
dc.contributor.authorMazumdar, A.
dc.contributor.authorMukhopadhyay, S.K.
dc.contributor.authorMukherjee, Ambarish
dc.contributor.authorChakraborty, Ranadhir
dc.contributor.authorHallsworth, J.E.
dc.contributor.authorGhosh, Wriddhiman
dc.date.accessioned2020-03-31
dc.date.accessioned2021-02-09T10:13:21Z
dc.date.available2020-03-04
dc.date.available2021-02-09T10:13:21Z
dc.date.issued2020
dc.identifier.citationScientific Reports, vol.10(1); 2020; Article no: 5917
dc.identifier.issn2045-2322
dc.identifier.otherhttps://www.nature.com/articles/s41598-020-62797-z
dc.identifier.urihttps://doi.org/10.1038/s41598-020-62797-z
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/8533
dc.descriptionIF2018 - 4.011
dc.description.abstractLittle 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.
dc.languageen
dc.publisherNature Research
dc.relation.ispartofSci Rep
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.titleMicrobiome and ecology of a hot spring-microbialite system on the Trans-Himalayan Plateau
dc.typeJournal Article
dc.affiliation.authorBose Institute, P-1/12 CIT Scheme VIIM, Kolkata 700054, India


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