identifier: traitmech:000442
label: endophytic
definition: A host-associated trait in which a microbe resides within living internal
  plant tissues without causing apparent disease in the host.
definition_source: DOI:10.3390/microorganisms5040077
trait_category: ECOLOGY
term_kind: CLASS
mapping_status: PROPOSED
parent_traits:
- traitmech:000049
synonyms:
- synonym_text: endophyte
  synonym_type: EXACT_SYNONYM
  source: DOI:10.3390/microorganisms5040077
- synonym_text: endophytism
  synonym_type: RELATED_SYNONYM
  source: DOI:10.1128/MMBR.00050-14
evidence:
- reference: DOI:10.1128/MMBR.00050-14
  snippet: All plants are inhabited internally by diverse microbial communities comprising
    bacterial, archaeal, fungal, and protistic taxa.
  notes: Hardoim et al. frame endophytic lifestyles as internal microbial residence
    in plants.
- reference: DOI:10.3390/microorganisms5040077
  snippet: Endophytes are microbial symbionts residing within the plant for the majority
    of their life cycle without any detrimental impact to the host plant.
  notes: Kandel et al. support the no-apparent-disease clause in the endophytic definition.
causal_graphs:
- graph_id: endophytic_internal_plant_colonization
  title: Internal plant colonization defines endophytism
  scope_status: NONMECHANISTIC
  scope_notes: This broad plant-host habitat trait spans bacteria, archaea, fungi,
    and protists and does not assert one universal molecular colonization mechanism.
  description: Evidence-backed ecological sketch connecting living internal plant
    tissue to endophytic residence.
  nodes:
  - node_id: internal_plant_tissue
    label: living internal plant tissue
    node_type: ENVIRONMENTAL_FACTOR
    description: A nonexternal plant host tissue occupied by endophytic microbes.
  - node_id: endophytic_colonization
    label: endophytic colonization
    node_type: BIOLOGICAL_PROCESS
    description: Entry, growth, and multiplication of an endophyte population within
      a plant host.
  - node_id: endophytic_trait
    label: endophytic
    node_type: TRAIT
    grounding: traitmech:000442
    description: Residence inside living internal plant tissue without apparent host
      disease.
  edges:
  - subject: internal_plant_tissue
    predicate: enables
    predicate_id: RO:0002327
    object: endophytic_colonization
    description: Living plant interiors are the host tissue habitat where endophyte
      populations establish.
    evidence:
    - reference: DOI:10.3390/microorganisms5040077
      snippet: Endophytic colonization refers to the entry, growth and multiplication
        of endophyte populations within the host plant.
      notes: Kandel et al. define endophytic colonization as establishment inside
        a plant host.
  - subject: endophytic_colonization
    predicate: confers
    predicate_id: METPO:2007700
    object: endophytic_trait
    description: Endophytic colonization realizes the endophytic ecological trait.
    evidence:
    - reference: DOI:10.3390/microorganisms5040077
      snippet: Endophytes are microbial symbionts residing within the plant for the
        majority of their life cycle without any detrimental impact to the host plant.
      notes: Kandel et al. define endophytes by internal plant residence without detrimental
        host impact.
curation_history:
- timestamp: '2026-09-28T19:37:27Z'
  curator: codex
  action: MINTED_TRAITMECH_ID
  changes: Minted endophytic as a DOI-backed ECOLOGY TraitRecord below host-associated
    after an ignored-and-hidden repository search found no exact TraitMech, METPO,
    proposal, or history record; reserved the upstream placeholder in proposals/metpo_traitmech_v319.
  llm_assisted: true
- timestamp: '2026-09-28T19:37:27Z'
  curator: codex
  action: REVIEW_CANONICAL_EXAMPLE_EVIDENCE_GAP
  changes: Reviewed canonical examples for the first pass and left them empty rather
    than promoting a strain-level growth-promotion or nitrogen-fixation study into
    generic endophytism evidence.
  llm_assisted: true