Bioenergetic potentials in terrestrial, shallow-sea and deep-sea hydrothermal systems

Lu, Guang-Sin; LaRowe, Douglas E.; Amend, Jan P.

doi:10.1016/j.chemgeo.2021.120449

Cited by 7 publications

(3 citation statements)

References 130 publications

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“…The results obtained align with various studies in the literature that focus on the bioenergetic potential of hydrothermal systems, encompassing terrestrial, shallow‐sea, and deep‐sea sites (Lu et al, 2021 ). It is important to highlight that acidophilic and acid‐tolerant fungi are significant components of extremely acidic habitats (Aguilera & González‐Toril, 2019 ).…”

Section: Discussionsupporting

confidence: 88%

Profiling microbial communities in an extremely acidic environment influenced by a cold natural carbon dioxide spring: A study of the Mefite in Ansanto Valley, Southern Italy

De Castro,

Avino,

Carraturo

et al. 2024

Environ Microbiol Rep

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The Ansanto Valley's Mefite, one of the Earth's largest non‐volcanic CO2 gas emissions, is distinguished by its cold natural carbon dioxide springs. These emissions originate from the intricate tectonics and geodynamics of the southern Apennines in Italy. Known for over two millennia for its lethal concentration of CO2 and other harmful gases, the Mefite has a reputation for being toxic and dangerous. Despite its historical significance and unique geological features, there is a lack of information on the microbial diversity associated with the Mefite's gas emissions. This study presents an integrated exploration of the microbial diversity in the mud soil, using high‐throughput sequencing of 16S rRNA (Prokaryotes) and ITS2 (Fungi), alongside a geochemical site characterisation. Our findings reveal that the Mefite's unique environment imposes a significant bottleneck on microbial diversity, favouring a select few microbial groups such as Actinobacteria and Firmicutes for Prokaryotes, and Basidiomycota for Fungi.

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Section: Discussionsupporting

confidence: 88%

Profiling microbial communities in an extremely acidic environment influenced by a cold natural carbon dioxide spring: A study of the Mefite in Ansanto Valley, Southern Italy

De Castro,

Avino,

Carraturo

et al. 2024

Environ Microbiol Rep

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“…Calculated temperatures of the mixed fluids incorporated the specific heat capacity of water at that temperature, following the method described in the study by Lu et al . (2021). Activity coefficients from these dilution gradients were calculated after speciating with AqEquil.…”

Section: Methodsmentioning

confidence: 99%

“…Gibbs energy yields for sulfur disproportionation were calculated along a linear dilution gradient from pure vent fluid to pure seawater at the four sites using endmember values as well as vent fluid:seawater mixing ratios of 75:25, 50:50, and 25:75. Calculated temperatures of the mixed fluids incorporated the specific heat capacity of water at that temperature, following the method described in the study by Lu et al (2021). Activity coefficients from these dilution gradients were calculated after speciating with AqEquil.…”

Section: Thermodynamic Modellingmentioning

confidence: 99%

Sulfur disproportionation is exergonic in the vicinity of marine hydrothermal vents

Alain

Aronson

Allioux

et al. 2022

Environmental Microbiology

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MASPEX-Europa: The Europa Clipper Neutral Gas Mass Spectrometer Investigation

Waite,

Burch,

Brockwell

et al. 2024

Space Sci Rev

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The MAss Spectrometer for Planetary EXploration (MASPEX) is a high-mass-resolution, high-sensitivity, multi-bounce time-of-flight mass spectrometer (MBTOF) capable of measuring minor species with abundances of sub-parts-per-million in Europa’s sputter-produced and radiolytically modified exosphere and in its oceanic plumes. The goal of the MASPEX-Europa investigation is to determine, through in-situ measurement of the exosphere and plume composition, whether the conditions for habitability exist or have existed on Europa. As conventionally defined, based on our knowledge of Earth life, the three fundamental conditions for habitability are: (1) the presence of liquid water; (2) the presence of organic compounds and the biogenic elements CHNOPS; and (3) a source of energy available for metabolic processes, which for Europa will most probably be chemosynthetic rather than photosynthetic. Condition (1) is already established by previous indirect (magnetic field) measurements, while MASPEX will contribute directly to the evaluation of condition (2) through highly specific compositional measurements in the Europan exosphere and plumes. The composition measurements will also contribute to the test of condition (3) through disequilibrium states of chemical reactions. Thus, the primary goal of MASPEX for Europa Clipper is to assess the habitability of Europa and specifically of its interior ocean. MASPEX has been developed successfully, and its calibration has demonstrated that it meets its specified requirements for sensitivity, dynamic range, and mass resolution. This paper reports the development of the MASPEX scientific investigation, the instrument, its performance, and calibration.

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Bioenergetic potentials in terrestrial, shallow-sea and deep-sea hydrothermal systems

Cited by 7 publications

References 130 publications

Profiling microbial communities in an extremely acidic environment influenced by a cold natural carbon dioxide spring: A study of the Mefite in Ansanto Valley, Southern Italy

Profiling microbial communities in an extremely acidic environment influenced by a cold natural carbon dioxide spring: A study of the Mefite in Ansanto Valley, Southern Italy

Sulfur disproportionation is exergonic in the vicinity of marine hydrothermal vents

MASPEX-Europa: The Europa Clipper Neutral Gas Mass Spectrometer Investigation

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