plasmid carriage

traitmech:000090 · CLASS · REVIEWED

A genomics trait describing possession of one or more plasmids — extrachromosomal, typically circular DNA replicons that carry accessory genes such as resistance, virulence, or metabolic functions and can transfer by conjugation.

Plasmid carriage drives conjugative horizontal gene transfer

Evidence-backed causal sketch linking plasmid possession to conjugation and accessory-function delivery.

Plasmid carriage drives conjugative horizontal gene transfer Interactive directed graph showing evidence-backed causal relationships for plasmid carriage.

Edge evidence

  • plasmid carriage enables conjugation RO:0002327

    Conjugative plasmids encode the machinery for cell-to-cell transfer.

    • DOI:10.1128/MMBR.00020-10 Smillie et al. classify conjugative and mobilizable plasmids.
  • plasmid carriage contributes to accessory function RO:0002326

    Plasmids carry accessory genes that extend host phenotype.

    • DOI:10.1038/nrmicro1235 Frost et al. include plasmids among the principal MGEs delivering accessory functions.
  • toxin-antitoxin system stabilizes plasmid vertical inheritance

    Toxin-antitoxin systems increase vertical stability of their replicons.

    • DOI:10.1093/nar/gkae018 TA systems are small selfish genetic modules that increase vertical stability of their replicons.
  • plasmid-encoded methylase protects against restriction of incoming plasmid DNA

    Plasmid-encoded methylases protect plasmid DNA from host restriction.

    • DOI:10.1093/nar/gkae896 plasmid-encoded methylases that protect plasmids from restriction.
  • plasmid-encoded anti-restriction genes protects against restriction of incoming plasmid DNA

    Plasmid-encoded anti-restriction genes counter multiple RM system types.

    • DOI:10.1093/nar/gkae896 plasmid-encoded anti-restriction genes that protect against multiple RM types.
  • antibiotic selective pressure promotes retention of plasmid carriage

    Without selection plasmids tend to be lost; antibiotic pressure promotes retention.

    • DOI:10.1080/22221751.2024.2352432 without selection plasmids tend to be lost, whereas antibiotic (or metal) selective pressure promotes retention.
  • plasmid carriage imposes plasmid fitness cost

    Plasmid carriage imposes a fitness cost from additional material and energy consumption.

    • DOI:10.1080/22221751.2024.2352432 Plasmid carriage imposes fitness costs (additional material and energy consumption).
  • compensatory mutation reduces plasmid fitness cost METPO:2000017

    Compensatory evolution of chromosomes and plasmids counteracts plasmid fitness cost.

    • DOI:10.1002/ece3.70121 Compensatory evolution of chromosomes and plasmids counteracts the plasmid fitness cost.

Provenance

Source
METPO (2025-11-25)
Definition source
DOI:10.1128/MMBR.00020-10

Synonyms (1)

  • plasmid-bearing RELATED_SYNONYM · DOI:10.1128/MMBR.00020-10

kg-microbe context

Matched 1 kg-microbe node via parent_proxy.

  • METPO:1000188 [-0.956, -1.962, -3.148, +1.274, …]

512-dim DeepWalkSkipGramEnsmallen embedding from kg-microbe (2026-04-25).

Nearest neighbors in embedding space

Top-8 cosine-similar METPO traits from the 2026-04-25 deepwalk (512-D).

Curation history

  1. · PROPOSED_FROM_RESEARCH · claude

    Proposed candidate GENOMICS trait (plasmid carriage); sub-variant of mobile genetic element.

  2. · CURATED_CAUSAL_GRAPH · claude

    Added evidence-backed causal graph (plasmid conjugation / HGT) with GO node grounding and RO predicate groundings; promoted PROPOSED to REVIEWED.

  3. · ENRICH_CAUSAL_GRAPH · claude

    Added 6 evidence-backed generic edges (8 new nodes) from the deep-research report.

  4. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2000017×1).