Data · dataset · 2026
Cellulose Reshapes Microbial C–S–Fe Coupling to Suppress Direct and Fe(III)-Mediated Pyrite Oxidation
Listed in ZivaHub
Pyrite oxidation generates sulfate and acidity in sulfide-bearing mine soils, but how structural carbon suppresses this process remains unresolved.
Description
We combined a 56-day pyrite-amended soil microcosm with geochemical measurements, qPCR, metagenomics, DNA stable isotope probing (DNA-SIP), genome-resolved analysis, and apparent kinetic modeling. Cellulose decreased NaOH-extractable sulfate by 72.71% and HCl-extractable Fe(III) by 55.13% at day 56.
DNA-SIP showed that cellulose-derived carbon entered a phylogenetically distributed assimilating guild with genomic potential for oxidative-hydrolytic cellulose deconstruction, Fe(III) reduction, sulfate uptake, and assimilatory sulfate reduction. Enriched metagenome-assembled genomes collocated these C, Fe, and S functions within individual populations, whereas time-series metagenomes showed sustained cellulose-deconstruction and sulfur-assimilation potential without broad enrichment of Fe-reduction genes.
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Thus, functionally important assimilators could reshape Fe–S cycling without consistently dominating bulk community abundance. Consistent with these genomic and geochemical patterns, the apparent model indicated weaker O<sub>2</sub>-driven direct oxidation, Fe(II) oxidation/Fe(III) regeneration, and effective reactivity of extractable Fe(III). These results identify a microbial mechanism whereby cellulose utilization redirects C–S–Fe coupling toward more reductive and assimilatory transformations, suppressing pyrite oxidation without detectable mineral-surface coating.
Links
Where it is published
- DOI doi.org/10.1021/acs.est.5c14280.s001 ↗
DOI / persistent id · from zivahub uct ac za
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from zivahub uct ac za
Topics
- From keywords
- Chemistry · Earth & Environmental Science · Ecology · Evolutionary biology · Life Sciences · Microbiology
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ZivaHub | oai:figshare.com:article/34022543 | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].anzsrc:group:3103 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Ecology'] |
| concepts[field].anzsrc:group:3104 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Evolutionary Biology'] |
| concepts[field].anzsrc:group:3107 | mapping · zivahub uct ac za | vocabulary-mapper@1.0.0 | keywords['Microbiology'] |
| concepts[field].local:field:chemistry | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| description | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/description |
| license | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/rights |
| publication_date | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| title | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/title |