identifier: traitmech:000696 label: bacterial mycophagy definition: A trophic-ecology phenotype in which a bacterium actively obtains nutrients from living fungi or oomycetes and uses them for its own growth. definition_source: DOI:10.1111/j.1469-8137.2007.02325.x trait_category: ECOLOGY term_kind: CLASS mapping_status: PROPOSED parent_traits: - METPO:1000059 evidence: - reference: DOI:10.1111/j.1469-8137.2007.02325.x snippet: phenotypic behaviours that make available nutrients from living fungi and allow the conversion of living fungal biomass into bacterial biomass. notes: 'Leveau and Preston 2008, PMID:18086226, section I, p. 860 (author PDF page 2), visually checked contiguous quotation. Definition authority, not experimental replication. Summary, section I, strategy overview and selected diagnostic passages in section III read; remaining review and referenced experiments not comprehensively assessed. Section I explicitly includes oomycetes while acknowledging they are not true fungi. Section III requires growth controls and distinguishes inferred nutrient acquisition from direct flux measurement. Author full text: https://leveau.faculty.ucdavis.edu/wp-content/uploads/sites/220/2015/05/Leveau2008.pdf. DOI AND SRC:MED metadata matched PMID, title and DOI on 2026-10-11.' - reference: DOI:10.1099/ijs.0.02920-0 snippet: All Ter isolates proliferated in sand when hyphae of the fungi C. globosum, F. culmorum or M. hiemalis invaded. notes: 'de Boer et al. 2004, PMID:15143036, Results, p. 860 (PDF page 4), visually checked quotation. Methods tested all isolates against intact living hyphae, using plate counts at three weeks corrected for uninoculated controls. Growth is indirect nutritional evidence, not isotope-traced transfer. Heat-fixed-hypha adhesion is a separate observation. Abstract, Introduction, Methods, relevant Results and taxonomic descriptions read; pages 4/7 visually inspected; supplement unread. Author full text: https://leveau.faculty.ucdavis.edu/wp-content/uploads/sites/220/2015/05/deBoer2004.pdf. EXT_ID:15143036 AND SRC:MED matched source, ID, title and DOI on 2026-10-11.' - reference: DOI:10.1038/ismej.2008.97 snippet: The growth of collimonads did not cause a significant reduction in the Absidia biomass. notes: 'Hoppener-Ogawa et al. 2009, PMID:18923455, scientific Abstract, directly matched. Abstract, Introduction, Methods, Results, Discussion, Table 1 and actual Figures 1/2 read; Figure 3 and supplement unread. Indigenous soil populations and a four-strain sand mixture grew with invading fungus; this is not individual strain proof or direct nutrient tracing. Nonsignificant biomass loss does not establish no fitness cost. Methods samples at three weeks, whereas Figure 2 caption names two and three; no time-specific quantitative claim adopted. Overlapping authors with 2004, not independent-group replication. Author full text: https://leveau.ucdavis.edu/wp-content/uploads/sites/220/2015/05/HoppenerOgawa2009.pdf. EXT_ID:18923455 AND SRC:MED matched source, ID, title and DOI on 2026-10-11.' canonical_examples: - taxon_id: NCBITaxon:158899 taxon_label: Collimonas fungivorans reference: DOI:10.1099/ijs.0.02920-0 note: 'Qualified to natural dune-soil isolate Ter6 (type strain, NCCB 100033 = LMG 21973), not every species member. Primary Methods establish provenance and hyphal-growth testing; species description on p. 863 identifies Ter6. Provenance: https://doi.org/10.1099/ijs.0.02920-0. NCBI species ID/name and Ter6 type material independently resolved on 2026-10-11: https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?id=158899. Do not assign all 22 Ter isolates to this species from the 2004 circumscription.' discussions: - discussion_id: bacterial-mycophagy-scope-and-mappings prompt: Resolve exact mappings without conflating trophic endpoints. kind: CURATION_TODO status: OPEN rationale: Follow Leveau and Preston's active nutritional definition and explicit oomycete scope, without classifying oomycetes as true fungi or asserting experimentally demonstrated feeding on every target group. Merely consuming passive leaks or tissue dead through unrelated causes is excluded. Fungal inhibition, lysis, chitinase activity or a sequence annotation alone is insufficient. Killing and obligate fungal dependence are not required. Predatory bacterium traitmech:000054 requires bacterial prey; saprotrophy traitmech:000055 concerns dead material; parasitism traitmech:000043 requires host harm; phagotrophy traitmech:000628 requires particle ingestion. None is an established broader parent here. No organism-level disjointness is asserted. Unqualified mycophagy, fungivory and mycetophagy also cover nonbacterial organisms and are not exact synonyms. No exact xref or synonym assigned pending authority/scope reconciliation. posed_by: codex posed_date: '2026-10-11' - discussion_id: bacterial-mycophagy-mechanisms-and-assays prompt: Resolve active nutrient acquisition and taxon-specific mechanisms. kind: KNOWLEDGE_GAP status: OPEN rationale: 'Causal graphs and protein examples are deferred, not claimed absent. Separate fungal damage, nutrient release and bacterial assimilation; require functional evidence and taxon-paired accessions before encoding protein mechanisms. CommunityMech CommunityMech:000364 led to DOI:10.1093/ismejo/wrag201 (PMID:42523014, PMC13615538). Its Abstract, antagonistic-assay Methods and mycophagy Results/Discussion passages were read: CFU after five days with sclerotia is compared with glass beads. This is a follow-up lead, not counted evidence of active feeding rather than released-nutrient consumption. Figures and supplement remain unread; no additional canonical taxon or independent replication is inferred from the assay name.' posed_by: codex posed_date: '2026-10-11' curation_history: - timestamp: '2026-10-11T10:20:00Z' curator: codex action: MINTED_TRAITMECH_ID changes: Added bacterial mycophagy beneath phenotype with three DOI-backed sources, checked short snippets and a Ter6-qualified canonical example. Ignored-and-hidden main/worktree/open-PR checks support 000696 and v572 block 1064900-1064999. Existing records unchanged. Mechanisms and mappings remain open. Timestamp records observed UTC curation decision. llm_assisted: true