identifier: traitmech:000690 label: biomineralization definition: A physiological phenotype in which a microbe mediates the formation of mineral phases. definition_source: DOI:10.1016/j.crte.2010.09.002 trait_category: PHYSIOLOGY term_kind: CLASS mapping_status: PROPOSED parent_traits: - METPO:1000059 evidence: - reference: DOI:10.1016/j.crte.2010.09.002 snippet: Microorganisms can mediate the formation of minerals by a process called biomineralization. notes: 'Benzerara et al. 2011, scientific Abstract, directly checked in publisher HTML on 2026-10-10. Definition terminology, not an independent experimental replication: this is a review. Its Introduction and section 2 distinguish controlled, induced and biologically influenced formation, including organic-matrix effects. TraitMech represents the microbial phenotype rather than equating it with a process or material entity. The source cautions that association with pre-existing minerals does not establish formation. The remainder and actual figures were not audited for this record.' - reference: DOI:10.1128/AEM.07044-11 snippet: All bacteria tested induce the precipitation of a significant amount of calcium carbonate when cultured in M-3P medium. notes: Rodriguez-Navarro et al. 2012, PMID:22447589, PMC3346411, Discussion, Bacterial carbonatogenesis. Publisher scientific Abstract, Introduction, Methods, Results and relevant Discussion directly read on 2026-10-10; actual Figures 1 and 6 inspected, other figures not visually audited. Inoculated assays produced carbonates whereas uninoculated substrate controls did not. Tested M. xanthus strain 422, B. diminuta SJ 63 and a stone bacterial community are assay labels, not verified canonical taxa here. Polymorph selection depends on the stated substrate/medium conditions, not a universal strain rule. The proposed amorphous precursor is not established by morphology alone. No universal urease requirement or functional protein mechanism is inferred. - reference: DOI:10.1038/ncomms11228 snippet: Coccoliths are calcitic particles produced inside the cells of unicellular marine algae known as coccolithophores. notes: Sviben et al. 2016, PMID:27075521, PMC4834641. Scientific Abstract directly checked in Europe PMC full-text XML on 2026-10-10; Introduction, calcite-resupply Results and Discussion also inspected. This supports controlled mineral production and the coccolith child's placement. Historical E. huxleyi AWI1516 observations do not establish every strain's current phenotype. A separate calcium-rich compartment is not proven to be a necessary direct precursor or bulk-transfer route. No new figure or supplement audit is claimed for this parent; the child's more detailed provenance is retained. - reference: DOI:10.1016/j.protis.2016.05.002 snippet: Scales were formed one by one in silica deposition vesicles (SDVs) notes: Nomura and Ishida 2016, PMID:27348459. Scientific abstract directly read on 2026-10-10 at https://rrc.nbrp.jp/references/56432?lang=en. Scale formation and silicon detection in immature-scale vesicles support mineral production beyond carbonates and the siliceous-scale child's placement. Historical Paulinella chromatophora naming does not establish current strain taxonomy. Full Methods and figures remain unread; proposed microtubule involvement is not molecular necessity. Scale production is distinct from subsequent shell assembly. discussions: - discussion_id: biomineralization-scope-and-mappings prompt: Keep mineral formation distinct from association and process-level mappings. kind: CURATION_TODO status: OPEN rationale: The definition includes controlled, induced and matrix-mediated formation when microbial mediation is demonstrated; it is not restricted to carbonate, intracellular deposition or a crystalline end product. Benzerara et al. DOI:10.1016/j.crte.2010.09.002 section 2 includes passive organic-matter effects under biologically influenced biomineralization. This broad terminology is retained, but precipitation near a cell, isolated nonliving-matrix activity, mineral adhesion, uptake of preformed particles or ion adsorption alone does not establish that organism's formation phenotype. Organic-substrate mineralization, mineral dissolution, metal tolerance and mineral use as an electron donor are not equivalent. Coccolith and siliceous-scale production are narrower endpoints. Magnetosome and ferrosome organelle records retain their structural parents; no automatic cross-axis reparenting or disjointness is asserted. The magnetosome graph's similarly named node has narrower scope and is not exactly grounded to this umbrella. No synonyms or xrefs are asserted pending authority-backed phenotype mapping. posed_by: codex posed_date: '2026-10-10' - discussion_id: biomineralization-exemplars-and-mechanisms prompt: Resolve assay-specific exemplars and distinct mineral-forming mechanisms. kind: KNOWLEDGE_GAP status: OPEN rationale: No canonical examples are assigned before strain provenance and current taxonomy are reconciled with the original assays. A community precipitation assay cannot be assigned wholesale to each community member. Substrate, medium, mineral phase, location and life stage qualify observations. No universal benefit, growth dependence, genetic control, obligatory enzyme or shared protein pathway follows from this umbrella. Separate controlled deposition from metabolically induced precipitation and organic-matrix effects when adding mechanisms. Functional evidence and taxon-paired accessions are required for protein edges; sequence features or mineral co-localization alone are insufficient. Mechanism is deferred, not claimed absent. posed_by: codex posed_date: '2026-10-10' curation_history: - timestamp: '2026-10-10T08:03:12Z' curator: codex action: MINTED_TRAITMECH_ID changes: Added biomineralization with source-backed terminology, three primary studies and directly checked short snippets. Reserved 000690 and v566 block 1064300-1064399 after ignored-and-hidden main/worktree/open-PR checks. Resolved the coccolith and siliceous-scale production parent gaps without claiming common mechanisms or canonical taxa. Timestamp records the observed UTC curation decision. llm_assisted: true