ArticleExtremophiles : life under extreme conditions2015
Evidence of in situ microbial activity and sulphidogenesis in perennially sub-0 °C and hypersaline sediments of a high Arctic permafrost spring.
Article in Extremophiles : life under extreme conditions, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 31 citations in OpenAlex.
- Sulfur-cycling chemolithoautotrophic microbial community dominates a cold, anoxic, hypersaline Arctic spring.Microbiome · 2023Article
- Active lithoautotrophic and methane-oxidizing microbial community in an anoxic, sub-zero, and hypersaline High Arctic spring.The ISME journal · 2022Article
- The archaeal classFrontiers in microbiology · 2022Article
- Microbial Metabolic Redundancy Is a Key Mechanism in a Sulfur-Rich Glacial Ecosystem.mSystems · 2020Article
- The identification of sulfide oxidation as a potential metabolism driving primary production on late Noachian Mars.Scientific reports · 2020Article
- Sulfur Respiration in a Group of Facultatively Anaerobic Natronoarchaea Ubiquitous in Hypersaline Soda Lakes.Frontiers in microbiology · 2018Article
- Bioreactor microbial ecosystems with differentiated methanogenic phenol biodegradation and competitive metabolic pathways unraveled with genome-resolved metagenomics.Biotechnology for biofuels · 2018Article
- Physicochemical Drivers of Microbial Community Structure in Sediments of Lake Hazen, Nunavut, Canada.Frontiers in microbiology · 2018Article
- Characterization of a cold-active bacterium isolated from the South Pole "Ice Tunnel".Extremophiles : life under extreme conditions · 2017Article
- Discovery of anaerobic lithoheterotrophic haloarchaea, ubiquitous in hypersaline habitats.The ISME journal · 2017Article
- Biological Characterization of Microenvironments in a Hypersaline Cold Spring Mars Analog.Frontiers in microbiology · 2017Article
- Bridging the divide: a model-data approach to Polar and Alpine microbiology.FEMS microbiology ecology · 2016Article
- Viral Induced Microbial Mortality in Arctic Hypersaline Spring Sediments.Frontiers in microbiology · 2016Article
- Indirect Evidence Link PCB Dehalogenation with Geobacteraceae in Anaerobic Sediment-Free Microcosms.Frontiers in microbiology · 2016Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The lost hammer (LH) spring perennially discharges subzero hypersaline reducing brines through thick layers of permafrost and is the only known terrestrial methane seep in frozen settings on Earth. The present study aimed to identify active microbial communities that populate the sediments of the spring outlet, and verify whether such communities vary seasonally and spatially. Microcosm experiments revealed that the biological reduction of sulfur compounds (SR) with hydrogen (e.g., sulfate reduction) was potentially carried out under combined hypersaline and subzero conditions, down to -20 °C, the coldest temperature ever recorded for SR. Pyrosequencing analyses of both 16S rRNA (i.e., cDNA) and 16S rRNA genes (i.e., DNA) of sediments retrieved in late winter and summer indicated fairly stable bacterial and archaeal communities at the phylum level. Potentially active bacterial and archaeal communities were dominated by clades related to the T78 Chloroflexi group and Halobacteria species, respectively. The present study indicated that SR, hydrogenotrophy (possibly coupled to autotrophy), and short-chain alkane degradation (other than methane), most likely represent important, previously unaccounted for, metabolic processes carried out by LH microbial communities. Overall, the obtained findings provided additional evidence that the LH system hosts active communities of anaerobic, halophilic, and cryophilic microorganisms despite the extreme conditions in situ.
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