Energetic convergence drives metabolic adaptation in lirima chilean high-altitude hydrothermal system

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dc.contributor.authorPaquis, Pablo
dc.contributor.authorPardo Esté, Coral
dc.contributor.authorTapia, Joseline
dc.contributor.authorFlorez, July Z
dc.contributor.authorPérez, Vilma
dc.contributor.authorMolina, Verónica
dc.contributor.authorCornejo-D'Ottone, Marcela
dc.contributor.authorPérez, Pablo A
dc.contributor.authorHarrod, Chris
dc.contributor.authorJeffrey, Wade H
dc.contributor.authorCalabrese, Sergio
dc.contributor.authorQuatrini, Paola
dc.contributor.authorTassi, Franco
dc.contributor.authorHengst, Martha B
dc.date.accessioned2026-10-21T19:04:03Z
dc.date.available2026-10-21T19:04:03Z
dc.date.issued2025
dc.description.abstractHigh-altitude hydrothermal systems provide laboratories for understanding microbial adaptation to extreme conditions. Here we investigated thermodynamic controls on metabolic transitions in Lirima hydrothermal system (Chile, 4000 meters above sea level) calculating affinities of competing carbon and sulfur reactions across pools (53-75 degrees C). Through geochemistry, numerical thermodynamic modeling, and stable isotope analysis, we identify Energetic Convergence Nodes where chemical affinities of competing pathways become equal. Calculations reveal hydrogenotrophic and carboxydotrophic methanogenesis converge with sulfate reduction at 63-64 degrees C. This corresponds with responses: carbon isotopes shift from -17.2 parts per thousand to -27.7 parts per thousand, sulfur isotopes from -20.5 parts per thousand to -9.1 parts per thousand, and carbon-to-sulfur ratios drop from similar to 10 to <1, indicating transition from carbon to sulfur-dominated metabolism. Microbial activity collapses at this temperature, while metagenomics validates both pathways. Independent analysis confirms convergence at 63-64 degrees C, establishing Energetic Convergence Nodes as predictive frameworks for metabolic boundaries with applications for early Earth biogeochemistry and extraterrestrial biosignature detection.
dc.description.sponsorshipUniversidad Católica del Norte (UCN), Vicerrectora de Investigación y Desarrollo Tecnolgico (VRIDT), UCN-VRIDT Pro-Fondecyt "Mechanisms of adaptation of microbial communities of high-altitude geothermal environments; Fondo Nacional de Desarrollo Cientfico y Tecnolgico (National Fund for Scientific and Technological Development) FONDECYT REGULAR 1181773, 1201692, 1211515, 1240245.
dc.identifier.doi10.1038/s43247-025-02817-w
dc.identifier.issn2662-4435
dc.identifier.urihttps://repositorioabierto.uantof.cl/handle/uantof/791
dc.language.isoen
dc.publisherSpringer Nature
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceCommunications Earth & Environment
dc.subjectYELLOWSTONE-NATIONAL-PARK
dc.subjectISOTOPE FRACTIONATION
dc.subjectREDOX REACTIONS
dc.subjectTEMPERATURE
dc.subjectMETHANOGENESIS
dc.subjectPRESSURES
dc.subjectDIVERSITY
dc.subjectHYDROGEN
dc.subjectCOEFFICIENTS
dc.subjectPOPULATIONS
dc.titleEnergetic convergence drives metabolic adaptation in lirima chilean high-altitude hydrothermal system
dc.typeArticle
oaire.citation.volume6
oaire.citationIssue1
organization.identifier.rorhttps://ror.org/04eyc6d95
organization.legalNameUniversidad de Antofagasta
uantof.curation.reviewed2026-11-05
uantof.curation.reviewedByDiego León
uantof.identificator.facultyFacultad de Ciencias del Mar y Recursos Biológicos
uantof.identificator.instituteInstituto de Ciencias Naturales Alexander von Humboldt
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