Celerinatantimonas yamalensis sp. nov., a cold-adapted diazotrophic bacterium from a cold permafrost brine

Shcherbakova, V. A.; Chuvil’skaya, N. A.; Rivkina, Elizaveta; Demidov, Nikita; Uchaeva, V. S.; Suetin, S. V.; Suzina, N. E.; Gilichinsky, D.

doi:10.1099/ijs.0.045997-0

Cited by 15 publications

(4 citation statements)

References 33 publications

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“…Recently, Chua et al [58] defined the Antarctic briny environments as liquid oases for microbial life. Hypersaline brine lenses are unique aquatic systems that are thought not to undergo changes via external influence over geological timescales [59]. In this regard, the brine TF4 had probably experienced a chemico-physical exchange with the atmosphere, whereas TF5 was supposed to be isolated since 12000 cal years BP [23].…”

Section: Discussionmentioning

confidence: 99%

Microbial Assemblages in Pressurized Antarctic Brine Pockets (Tarn Flat, Northern Victoria Land): A Hotspot of Biodiversity and Activity

et al. 2019

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Two distinct pressurized hypersaline brine pockets (named TF4 and TF5), separated by a thin ice layer, were detected below an ice-sealed Antarctic lake. Prokaryotic (bacterial and archaeal) diversity, abundances (including virus-like particles) and metabolic profiles were investigated by an integrated approach, including traditional and new-generation methods. Although similar diversity indices were computed for both Bacteria and Archaea, distinct bacterial and archaeal assemblages were observed. Bacteroidetes and Gammaproteobacteria were more abundant in the shallowest brine pocket, TF4, and Deltaproteobacteria, mainly represented by versatile sulphate-reducing bacteria, dominated in the deepest, TF5. The detection of sulphate-reducing bacteria and methanogenic Archaea likely reflects the presence of a distinct synthrophic consortium in TF5. Surprisingly, members assigned to hyperthermophilic Crenarchaeota and Euryarchaeota were common to both brines, indicating that these cold habitats host the most thermally tolerant Archaea. The patterns of microbial communities were different, coherently with the observed microbiological diversity between TF4 and TF5 brines. Both the influence exerted by upward movement of saline brines from a sub-surface anoxic system and the possible occurrence of an ancient ice remnant from the Ross Ice Shelf were the likely main factors shaping the microbial communities.

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Section: Discussionmentioning

confidence: 99%

Microbial Assemblages in Pressurized Antarctic Brine Pockets (Tarn Flat, Northern Victoria Land): A Hotspot of Biodiversity and Activity

et al. 2019

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“…Permafrost, including cryopegs, is a repository of diverse viable microorganisms represented by Gram-positive and Gram-negative, aerobic, anaerobic, spore-forming and asporogenous bacteria. [69][70][71][72][73][74][75][76] In numerous permafrost deposits, primarily of lacustrine and marine origin, viable methane-producing archaea have been found. [77][78][79][80] Permafrost has been shown to contain other groups of microorganisms, for example yeasts, 81,82 and mycelial fungi.…”

Section: Diversity Of Organisms In Permafrostmentioning

confidence: 99%

“…Permafrost, including cryopegs, is a repository of diverse viable microorganisms represented by Gram‐positive and Gram‐negative, aerobic, anaerobic, spore‐forming and asporogenous bacteria . In numerous permafrost deposits, primarily of lacustrine and marine origin, viable methane‐producing archaea have been found …”

Section: Diversity Of Organisms In Permafrostmentioning

confidence: 99%

Earth's perennially frozen environments as a model of cryogenic planet ecosystems

Rivkina

Abramov

Спирина

et al. 2018

Permafrost & Periglacial

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Permafrost and ice are important components of cryogenic planets and other bodies, which are abundant in the universe. Earth is one of many planets of the cold type. Earth's permafrost and ice provide an opportunity to test hypotheses that could be applied in the search for possible ecosystems and potential life on extraterrestrial cryogenic planets. Permafrost sediments in polar and alpine regions are natural ecosystems with a unique feature of low‐temperature preservation of the biological material and its genetic information. Therefore, permafrost studies allow reconstruction of the events that occurred in the Cenozoic and the prediction of possible life that might have been preserved before the effect of anthropogenic factors on these ecosystems, and could be found within ice or permafrost on other cryogenic planets.

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“…Highly mineralized ancient aquatic ecosystems (cryopegs), which are characterized by subzero temperatures, were found in the Arctic at a depth of several tens of meters [1]. Microbiological study of these water brines within permafrost has shown that they are inhabited by cryophilic prokaryotes, including anaerobic bacteria of different physiological groups [1][2][3][4][5]. Nevertheless, information on the microbial diversity of cryopegs remains very scarce, and there are significant functional gaps in the trophic chains of the anaerobic part of the cycles of biogenic elements, including the sulfur cycle.…”

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confidence: 99%

Desulfovibrio gilichinskyi sp. nov., a cold-adapted sulfate-reducing bacterium from a Yamal Peninsula cryopeg

Ryzhmanova

Абашина

Petrova

et al. 2019

International Journal of Systematic and Evolutionary Microbiology

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A psychrotolerant non-spore-forming sulfate-reducing bacterium, strain K3S T , was isolated from a Yamal Peninsula cryopeg within permafrost. Strain K3S T grew at subzero temperatures and required Na + for growth. The new bacterium was able to use lactate, formate, pyruvate, fumarate, alanine, ethanol and molecular hydrogen as electron donors in the presence of sulfate, and used sulfate, sulfite, thiosulfate and elemental sulfur as electron acceptors in the presence of lactate. Fe(III)citrate and Fe(III)-EDTA were reduced without visible growth. Major polar lipids were рhosphatidylserine, рhosphatidylethanolamine, phospholipids, cardiolipin and aminolipid; major cellular fatty acids were C 16 : 1 !7, C 16 : 0 and C 18 : 1 !7; and the predominant isoprenoid quinone was MK-6 (H 2). The genomic DNA G+C content was found to be 42.33 mol%. Phylogenetic analysis showed that the closest relative of the new isolate was Desulfovibrio ferrireducens strain 61 T with 97.1 % 16S rRNA gene similarity. In addition, the ANI value between strain K3S T and D. ferrireducens 61 T was 82.1 %. On the basis of the genomic and polyphasic taxonomy data of strain K3S T , we conclude that the strain is a representative of a novel species Desulfovibrio gilichinskyi sp. nov. (=VKM B-2877 T =DSM 100341 T).

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Celerinatantimonas yamalensis sp. nov., a cold-adapted diazotrophic bacterium from a cold permafrost brine

Cited by 15 publications

References 33 publications

Microbial Assemblages in Pressurized Antarctic Brine Pockets (Tarn Flat, Northern Victoria Land): A Hotspot of Biodiversity and Activity

Microbial Assemblages in Pressurized Antarctic Brine Pockets (Tarn Flat, Northern Victoria Land): A Hotspot of Biodiversity and Activity

Earth's perennially frozen environments as a model of cryogenic planet ecosystems

Desulfovibrio gilichinskyi sp. nov., a cold-adapted sulfate-reducing bacterium from a Yamal Peninsula cryopeg

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