Prokaryotic Diversity in the Biotopes of the Gudzhirganskoe Saline Lake (Barguzin Valley, Russia)

Lavrentyeva, E. V.; Эрдынеева, Е. Б.; Банзаракцаева, Т. Г.; Kotsyurbenko, O. R.; Батурина, О. А.; Хахинов, В. В.; Козырева, Л. П.

doi:10.1134/s0026261720030157

Cited by 6 publications

(3 citation statements)

References 27 publications

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“…Moreover, Lavrentyeva et al . 68 studied environmental samples from the Gudzhirganskoe saline lake (Barguzin Valley, Russia) and all sediment samples were dominated by Firmicutes. In another study, Glaring et al .…”

Section: Discussionmentioning

confidence: 99%

Microbial community of soda Lake Van as obtained from direct and enriched water, sediment and fish samples

Omeroglu

Sudağıdan

Yurt

et al. 2021

Sci Rep

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Soda lakes are saline and alkaline ecosystems that are considered to have existed since the first geological records of the world. These lakes support the growth of ecologically and economically important microorganisms due to their unique geochemistry. Microbiota members of lakes are valuable models to study the link between community structure and abiotic parameters such as pH and salinity. Lake Van is the largest endroheic lake and in this study, bacterial diversity of lake water, sediment, and pearl mullet (inci kefali; Alburnus tarichi), an endemic species of fish which are collected from different points of the lake, are studied directly and investigated meticulously using a metabarcoding approach after pre-enrichment. Bacterial community structures were identified using Next Generation Sequencing of the 16S rRNA gene. The analysis revealed that the samples of Lake Van contain high level of bacterial diversity. Direct water samples were dominated by Proteobacteria, Cyanobacteria, and Bacteroidota, on the other hand, pre-enriched water samples were dominated by Proteobacteria and Firmicutes at phylum-level. In direct sediment samples Proteobacteria, whereas in pre-enriched sediment samples Firmicutes and Proteobacteria were determined at highest level. Pre-enriched fish samples were dominated by Proteobacteria and Firmicutes at phylum-level. In this study, microbiota members of Lake Van were identified by taxonomic analysis.

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Section: Discussionmentioning

confidence: 99%

Microbial community of soda Lake Van as obtained from direct and enriched water, sediment and fish samples

Omeroglu

Sudağıdan

Yurt

et al. 2021

Sci Rep

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“…MAGs Although the majority of groups classified from our genomes has been described in different karst caves worldwide, the Trueperaceae (DC_MAG_00005) was the only which, to the best of our knowledge, has not been previously detected in these ecosystems. This chemoorganotroph family is known for its ionizing radiation resistance and was mostly obtained from geothermal (Albuquerque et al, 2005), saline lake (Lavrentyeva et al, 2020) and dry environments as soil crusts (Weber et al, 2018). The first isolates showed an optimal growth at 50 o C, a growth up to 6% of NaCl and a capability to survive (60% of the cells) to 5.0 kGy (Albuquerque et al, 2005).…”

Section: Metabolic Potential Of Mags and Their Relationships With The...mentioning

confidence: 99%

Metagenome-Assembled Genomes from Monte Cristo Cave (Diamantina, Brazil) Reveal Prokaryotic Lineages As Functional Models for Life on Mars

et al. 2021

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Although several studies have explored microbial communities in different terrestrial subsurface ecosystems, little is known about the diversity of their metabolic processes and survival strategies.The advance of bioinformatic tools is allowing the description of novel and not-yet cultivated microbial lineages in different ecosystems, due to the genome reconstruction approach from metagenomic data. The recovery of genomes has the potential of revealing novel lifestyles, metabolic processes and ecological roles of microorganisms, mainly in ecosystems that are largely unknown, and in which cultivation could be not viable. In this study, through shotgun metagenomic data, it was possible to reconstruct several genomes of cultivated and not-yet .

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“…Soda lakes belong to such areas, being characterized by a combination of several extremes [17]. Bacteria of the genus Thioalkalivibrio-belonging to the class Gammaproteobacteria, and distantly related to anoxygenic purple sulfur bacteria of the genus Ectothiorhodospira-are common inhabitants of soda lakes [18][19][20][21][22][23][24][25], and belong to the double-extremophilic bacteria [26]. Among them is the strain Thioalkalivibrio versutus, which has adapted to thriving in soda brines characterized by both strong alkalinity (pH up to 11) and high salinity, with almost saturating salt concentrations (up to 4 M Na + ) [27].…”

Section: Introductionmentioning

confidence: 99%

Sodium Energetic Cycle in the Natronophilic Bacterium Thioalkalivibrio versutus

Muntyan

Viryasov

Sorokin

et al. 2022

IJMS

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As inhabitants of soda lakes, Thioalkalivibrio versutus are halo- and alkaliphilic bacteria that have previously been shown to respire with the first demonstrated Na+-translocating cytochrome-c oxidase (CO). The enzyme generates a sodium-motive force (Δs) as high as −270 mV across the bacterial plasma membrane. However, in these bacteria, operation of the possible Δs consumers has not been proven. We obtained motile cells and used them to study the supposed Na+ energetic cycle in these bacteria. The resulting motility was activated in the presence of the protonophore 2-heptyl-4-hydroxyquinoline N-oxide (HQNO), in line with the same effect on cell respiration, and was fully blocked by amiloride—an inhibitor of Na+-motive flagella. In immotile starving bacteria, ascorbate triggered CO-mediated respiration and motility, both showing the same dependence on sodium concentration. We concluded that, in T. versutus, Na+-translocating CO and Na+-motive flagella operate in the Na+ energetic cycle mode. Our research may shed light on the energetic reason for how these bacteria are confined to a narrow chemocline zone and thrive in the extreme conditions of soda lakes.

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Prokaryotic Diversity in the Biotopes of the Gudzhirganskoe Saline Lake (Barguzin Valley, Russia)

Cited by 6 publications

References 27 publications

Microbial community of soda Lake Van as obtained from direct and enriched water, sediment and fish samples

Microbial community of soda Lake Van as obtained from direct and enriched water, sediment and fish samples

Metagenome-Assembled Genomes from Monte Cristo Cave (Diamantina, Brazil) Reveal Prokaryotic Lineages As Functional Models for Life on Mars

Sodium Energetic Cycle in the Natronophilic Bacterium Thioalkalivibrio versutus

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