A defined two-member synthetic community consisting of the PHE-degrading bacterium Sphingobium sp. RS2 and the carbon-sequestering archaeon Nitrososphaera viennensis EN76. The SynCom was added to phenanthrene-contaminated lettuce-soil pot experiments, where the accessible abstract reports 90.02% PHE removal from soil, an 81.07% reduction in PHE transferred to lettuce, and increases in soil organic carbon, microbial carbon, and total carbon.
Taxonomy
| Taxon | Ontology ID | Functional Roles | Abundance |
|---|---|---|---|
| Sphingobium sp. RS2 — ontology label: Sphingobium | NCBITaxon:165695 · TaxonMech · TraitMech |
PRIMARY_DEGRADER
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DOMINANT |
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| Nitrososphaera viennensis EN76 — ontology label: Nitrososphaera viennensis | NCBITaxon:1034015 · TaxonMech · TraitMech |
PRIMARY_PRODUCER
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DOMINANT |
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Ecological Interactions
The graph shows only explicitly linked interaction participants. Community members without an asserted participant link are omitted; membership alone does not imply an interaction.
SynCom phenanthrene removal in lettuce pots
In lettuce-soil pots, SynCom addition was associated with 90.02% PHE removal from soil and an 81.07% reduction of PHE transfer to lettuce. These are pot-level outcomes, not isolated contributions of each inoculant or a traced interspecies exchange in the accessible abstract.
Metabolites: phenanthrene (CHEBI:28851 · MediaIngredientMech · CMMMech)
Biological Processes:
- xenobiotic metabolic process (GO:0006805 · PathwayMech)
Evidence
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PMID:41967346 - SUPPORT (IN_VIVO)"The results of the pot experiment indicated that 90.02% of the PHE was effectively removed from the soil and 81.07% of the PHE transferred to the lettuce was reduced by the addition of SynCom."
SynCom soil carbon endpoints and modeled guild associations
SynCom addition significantly increased soil organic carbon, microbial carbon and total carbon content in the pot experiment. PARTIAL: random-forest/PLS-PM analysis links these outcomes to increased absolute abundances of carbon-fixing and PHE-degrading soil microorganisms. Carbon stocks and modeled associations do not themselves quantify carbon-fixation flux, establish exchanged carbon, or isolate each inoculant contribution.
Evidence
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PMID:41967346 - SUPPORT (IN_VIVO)"Soil organic carbon, microbial carbon, and total carbon content were also significantly increased."
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PMID:41967346 - PARTIAL (COMPUTATIONAL)"demonstrated that these effects were primarily driven by a continuous increase in the absolute abundance of soil carbon-fixing microorganisms and PHE-degrading microorganisms after SynCom addition."
Knowledge gaps & discussions (2)
KNOWLEDGE_GAP OPEN What phenanthrene soil dose, SynCom inoculation amounts, strain ratio, pot conditions, and carbon-assay timing were used for the Sphingobium-Nitrososphaera SynCom?
The PubMed abstract names the exact members and reports PHE, lettuce-transfer, and carbon endpoints, but Elsevier full text was not open-access through Europe PMC during curation, leaving exact cultivation parameters unresolved.
Attaches to: engineering_design, growth_media#Phenanthrene-contaminated lettuce pot soil
1 evidence item(s)
The results of the pot experiment indicated that 90.02% of the PHE was effectively removed from the soil and 81.07% of the PHE transferred to the lettuce was reduced by the addition of SynCom.
Shows that the abstract reports pot-level outcomes without exposing the pot setup or inoculation details.
KNOWLEDGE_GAP OPEN What source evidence separates the observed soil carbon increase from carbon-fixation flux and causal contributions of the two inoculants?
The accessible abstract supports positive pot endpoints and the authors modeled guild-abundance interpretation. It does not resolve member-specific exchange or direct flux; full methods and model specification were not read. Prior environmental grounding and computational provenance fixes are preserved.
Attaches to: ecological_interactions#SynCom phenanthrene removal in lettuce pots, ecological_interactions#SynCom soil carbon endpoints and modeled guild associations
1 evidence item(s)
Soil organic carbon, microbial carbon, and total carbon content were also significantly increased.
Supports increased soil organic, microbial, and total carbon after SynCom addition.
External Resources
| Name | Repository | Resource ID |
|---|---|---|
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Primary publication - phenanthrene-carbon SynCom
PubMed record for the 2026 Journal of Environmental Management study of the Sphingobium-Nitrososphaera SynCom. |
OTHER | PMID:41967346 |
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Primary publication DOI - phenanthrene-carbon SynCom
DOI landing page for the 2026 Journal of Environmental Management study of the Sphingobium-Nitrososphaera SynCom. |
OTHER | doi:10.1016/j.jenvman.2026.129643 |
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Environmental Factors
| Factor | Value | Unit |
|---|---|---|
| Phenanthrene contamination | phenanthrene-contaminated soil | N/A |
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| Soil phenanthrene removal | 90.02 | percent |
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| Lettuce PHE-transfer reduction | 81.07 | percent |
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Growth Media
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