Microbiome and ecology of a hot spring-microbialite system on the Trans-Himalayan Plateau
| Autor: | Rimi Roy, Tarunendu Mapder, Sabyasachi Bhattacharya, Ranadhir Chakraborty, Prosenjit Pyne, Wriddhiman Ghosh, Nibendu Mondal, Svetlana Fernandes, Aninda Mazumdar, Utpal Bakshi, John E. Hallsworth, Moidu Jameela Rameez, Subhrangshu Mandal, William K. O’Neill, Ambarish Mukherjee, A. Peketi, Subhra Kanti Mukhopadhyay, Chayan Roy, Prabir Kumar Haldar |
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| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Kosmotropic Geologic Sediments Hot Temperature Earth science 030106 microbiology lcsh:Medicine Hot Springs Article Microbial ecology 03 medical and health sciences chemistry.chemical_compound Extremophiles Spring (hydrology) Ecosystem Sulfate lcsh:Science Phylogeny Hot spring geography Minerals Multidisciplinary geography.geographical_feature_category Plateau biology Geomicrobiology Chemistry Microbiota lcsh:R biology.organism_classification 030104 developmental biology Biofilms lcsh:Q Metagenomics Microbiome Archaea |
| Zdroj: | Scientific Reports Scientific Reports, Vol 10, Iss 1, Pp 1-22 (2020) 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, S, O'Neill, W K, Mazumdar, A, Mukhopadhyay, S K, Mukherjee, A, Chakraborty, R, Hallsworth, J E & Ghosh, W 2020, ' Microbiome and ecology of a hot spring-microbialite system on the Trans-Himalayan Plateau ', Scientific Reports, vol. 10, 5917 . https://doi.org/10.1038/s41598-020-62797-z |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-020-62797-z |
| Popis: | 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 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. |
| Databáze: | OpenAIRE |
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