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
Edge evidence
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plasmid carriage
enables
conjugation
RO:0002327Conjugative plasmids encode the machinery for cell-to-cell transfer.
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DOI:10.1128/MMBR.00020-10
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plasmid carriage
contributes to
accessory function
RO:0002326Plasmids carry accessory genes that extend host phenotype.
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DOI:10.1038/nrmicro1235
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toxin-antitoxin system
stabilizes
plasmid vertical inheritance
Toxin-antitoxin systems increase vertical stability of their replicons.
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DOI:10.1093/nar/gkae018
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plasmid-encoded methylase
protects against
restriction of incoming plasmid DNA
Plasmid-encoded methylases protect plasmid DNA from host restriction.
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DOI:10.1093/nar/gkae896
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plasmid-encoded anti-restriction genes
protects against
restriction of incoming plasmid DNA
Plasmid-encoded anti-restriction genes counter multiple RM system types.
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DOI:10.1093/nar/gkae896
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antibiotic selective pressure
promotes retention of
plasmid carriage
Without selection plasmids tend to be lost; antibiotic pressure promotes retention.
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DOI:10.1080/22221751.2024.2352432
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plasmid carriage
imposes
plasmid fitness cost
Plasmid carriage imposes a fitness cost from additional material and energy consumption.
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DOI:10.1080/22221751.2024.2352432
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compensatory mutation
reduces
plasmid fitness cost
METPO:2000017Compensatory evolution of chromosomes and plasmids counteracts plasmid fitness cost.
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DOI:10.1002/ece3.70121
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Provenance
- Source
- METPO (2025-11-25)
- Definition source
- DOI:10.1128/MMBR.00020-10
Parent traits (1)
Synonyms (1)
- plasmid-bearing
kg-microbe context
Matched 1 kg-microbe node via parent_proxy.
METPO:1000188[-0.956, -1.962, -3.148, +1.274, …]
Nearest neighbors in embedding space
- upper quality 1.000
- genomics codon usage bias 1.000
- genomics CRISPR-Cas system 1.000
- genomics GC skew 1.000
- genomics genome size 1.000
- genomics genome streamlining 1.000
- genomics genomic island 1.000
- genomics mobile genetic element 1.000
Curation history
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PROPOSED_FROM_RESEARCH · claude
Proposed candidate GENOMICS trait (plasmid carriage); sub-variant of mobile genetic element.
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CURATED_CAUSAL_GRAPH · claude
Added evidence-backed causal graph (plasmid conjugation / HGT) with GO node grounding and RO predicate groundings; promoted PROPOSED to REVIEWED.
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ENRICH_CAUSAL_GRAPH · claude
Added 6 evidence-backed generic edges (8 new nodes) from the deep-research report.
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GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2000017×1).