Deleted Journal, Journal Year: 2024, Volume and Issue: 1(1)
Published: Oct. 30, 2024
Language: Английский
Proceedings of the National Academy of Sciences, Journal Year: 2023, Volume and Issue: 120(20)
Published: May 8, 2023
Dissimilatory sulfate reduction (DSR) mediated by sulfate-reducing microorganisms (SRMs) plays a pivotal role in global sulfur, carbon, oxygen, and iron cycles since at least 3.5 billion y ago. The canonical DSR pathway is believed to be sulfide. Herein, we report phylogenetically diverse SRMs through which zero-valent sulfur (ZVS) directly generated. We identified that approximately 9% of was directed toward ZVS with S 8 as predominant product, the ratio sulfate-to-ZVS could changed SRMs’ growth conditions, particularly medium salinity. Further coculturing experiments metadata analyses revealed DSR-derived supported various ZVS-metabolizing microorganisms, highlighting this an essential component biogeochemical cycle.
Language: Английский
Citations
26
The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 916, P. 170332 - 170332
Published: Jan. 22, 2024
Language: Английский
Citations
9
Water Research, Journal Year: 2024, Volume and Issue: 258, P. 121775 - 121775
Published: May 14, 2024
Language: Английский
Citations
8
Water Research, Journal Year: 2023, Volume and Issue: 245, P. 120589 - 120589
Published: Sept. 9, 2023
Language: Английский
Citations
11
Bioresource Technology, Journal Year: 2025, Volume and Issue: 419, P. 132085 - 132085
Published: Jan. 17, 2025
Language: Английский
Citations
0
Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 20, 2025
The pursuit of efficient natural gas utilization is inherently linked to thorough purification its contaminants. Traditional techniques, while adept at removing sulfur-containing acid gases (e.g., H2S) and hydrocarbons, have overlooked a critical aspect: the management mercury, leading storage tank corrosion significant safety hazards in utilization. In this study, we demonstrate that core-shell ZnS@Sx enriched with low-coordinated polysulfide species, prepared by coating sulfur shell through situ conversion H2S additional SO2 on surface ZnS core, exhibits superior saturated Hg0 adsorption capacity 79.8 mg/g, over 1000 times pristine counterpart. spectroscopic analysis revealed direct positive correlation (R2 = 0.9524) between concentration short-chain Sx (x 3-5) ability. Theoretical calculations further substantiated energy ZnS@S4 for among various species. Notably, activity efficiently restored intermittent online conversion, achieving concurrent mercury partial gas, paving way safer more sustainable
Language: Английский
Citations
0
Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 15
Published: Feb. 21, 2025
Permafrost thaw increases the bioavailability of ancient organic matter, facilitating microbial metabolism volatile compounds (VOCs), carbon dioxide, and methane (CH4). The formation thermokarst (thaw) lakes in icy, organic-rich Yedoma permafrost leads to high CH4 emissions, subsurface microbes that have potential be biogeochemical drivers turnover these systems. However, better characterize quantify rates changes, methods further clarify relationship between processes dynamics are needed. In this study, we investigated four sites (two well-drained mounds, a drained lake, terrestrial margin recently formed lake) determine whether biogenic VOCs (1) can effectively collected during winter, (2) winter sampling provides more biologically significant correlated with metabolic potential. During cold season (March 2023), drilled boreholes at cores simultaneously populations captured VOCs. VOC analysis revealed "fingerprints" were distinct unique each site. Total from included > 400 features, including 40 potentially related metabolism. Subsurface community composition was across sites; for example, methanogenic archaea far abundant site characterized by annual emissions. results obtained method strongly suggest ∼10% biogenic, mapped metabolisms. By revealing dynamics, work advances our ability monitor predict Arctic soils.
Language: Английский
Citations
0
Water Research, Journal Year: 2025, Volume and Issue: 279, P. 123414 - 123414
Published: Feb. 28, 2025
Language: Английский
Citations
0
Geobiology, Journal Year: 2025, Volume and Issue: 23(2)
Published: March 1, 2025
The microbially mediated replacement of sulfate-bearing evaporites by authigenic carbonate and native sulfur under anoxic conditions is poorly understood. Sulfur-bearing carbonates from the Monte Palco ridge (Sicily) replacing Messinian gypsum were therefore studied to better characterize involved microorganisms. lack (1) sedimentary bedding, (2) lamination, (3) significant water-column-derived lipid biomarkers in secondary implies after deposition (epigenesis). Allochthonous clasts older Calcare di Base younger Trubi Formation within these further evidence epigenetic formation. sulfur-bearing are significantly 13C-depleted (δ13C as low -51‰), identifying methane a major carbon source. 18O-enrichment (δ18O high 5.4‰) probably reflects precipitation 18O-enriched fluids transported along adjacent faults or closed system with very little water. Native variable 34S-enrichment (δ34S 18.9‰), relatively small maximum offset (12.3‰) between sulfate source (gypsum) sulfur, δ34S values carbonate-associated (as 61.1‰) suggest conversion (semi-)closed system, insignificant removal. Anaerobic methanotrophic archaea (ANME) apparently affiliated ANME-1 clade mineral formation evidenced biomarker inventory, which contains abundant isoprenoids including sn3-hydroxyarchaeol sole hydroxyarchaeol isomer glycerol dibiphytanyl tetraethers (GDGTs). A series various, tentatively identified non-isoprenoidal dialkyl diethers (DAGEs), 10me-C16 fatty acid, hydroxy C16 acids, cyclopropyl-C17:0ω7,8 acid agree sulfate-reducing bacteria participating anaerobic oxidation methane. Specific during replacement, unlike those at marine seeps, reflected occurrence lipids such lycopane, 9me-C17 novel DAGEs. As response confined environment characterized concentrations, sulfidic conditions, elevated salinity, ANMEs adapted their membrane compositions cope stressors.
Language: Английский
Citations
0
Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 16
Published: April 4, 2025
The majority of the organic matter (OM) degradation on seafloor occurs in coastal regions. Since oxygen (O 2 ) becomes quickly depleted top sediments, most OM decomposition is driven by microbial sulfate reduction (SR) and fermentation, latter generating molecular hydrogen (H ). If H not consumed hydrogenotrophic microorganisms accumulates sedimentary porewaters, hindered. Despite importance scavenging for mineralization, knowledge oxidizers their constraints marine sediments still quite limited. Here we investigated role (2 to 5 cm, suboxic-sulfidic) bottom (18 22 sulfidic) from a location exposed seasonal hypoxia SW Baltic Sea. We used April, May August, representative different seasons. spiked respective sediment slurries with incubated them up 4 weeks under O -free conditions. consumption potential, methane production shifts bacterial archaeal 16S rRNA gene amplicons (generated RNA) were assessed over time. variations community compositions pore water geochemistry already gave distinct starting conditions enrichments. Sediments near anoxic favored starter exhibiting highest oxidation potential. Most observed potential appeared associated reducers. putative involvement massively enriched ANME cycling 18 cm horizons conspicuous. While differences potentials studied are likely related (season-depending) overall redox state interstitial waters, influence interconnections could be fully resolved evaluated, demonstrating need further consumption- community-based studies.
Language: Английский
Citations
0