Evidence map›Paper›PMID 33975933›Full record

ArticlemBio2021

Positive Selection Inhibits Plasmid Coexistence in Bacterial Genomes.

Laura Carrilero, Anastasia Kottara, David Guymer, Ellie Harrison, James P J Hall, Michael A Brockhurst

Open access · goldAbstract read
In one paragraph

Article in mBio, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
3.6field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 22 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 1 country.

Laura CarrileroDivision of Evolution and Genomic Sciences, School of Biological Sciences, University of Manchester, Manchester, United Kingdom.
Anastasia KottaraDepartment of Animal and Plant Sciences, University of Sheffield, Sheffield, United Kingdom.
David GuymerDepartment of Biology, University of York, York, United Kingdom.
Ellie HarrisonDepartment of Animal and Plant Sciences, University of Sheffield, Sheffield, United Kingdom.ORCID 0000-0002-2050-4631
James P J HallDepartment of Evolution, Ecology and Behaviour, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, United Kingdom.
Michael A BrockhurstDivision of Evolution and Genomic Sciences, School of Biological Sciences, University of Manchester, Manchester, United Kingdom michael.brockhurst@manchester.ac.uk.ORCID 0000-0003-0362-820X
University of Manchester · GBUniversity of York · GBUniversity of Liverpool · GBUniversity of Sheffield · GB

Funding

Biotechnology and Biological Sciences Research Council BB/R006253/1
6 · The paper itself

Abstract

Plasmids play an important role in bacterial evolution by transferring niche-adaptive functional genes between lineages, thus driving genomic diversification. Bacterial genomes commonly contain multiple, coexisting plasmid replicons, which could fuel adaptation by increasing the range of gene functions available to selection and allowing their recombination. However, plasmid coexistence is difficult to explain because the acquisition of plasmids typically incurs high fitness costs for the host cell. Here, we show that plasmid coexistence was stably maintained without positive selection for plasmid-borne gene functions and was associated with compensatory evolution to reduce fitness costs. In contrast, with positive selection, plasmid coexistence was unstable despite compensatory evolution. Positive selection discriminated between differential fitness benefits of functionally redundant plasmid replicons, retaining only the more beneficial plasmid. These data suggest that while the efficiency of negative selection against plasmid fitness costs declines over time due to compensatory evolution, positive selection to maximize plasmid-derived fitness benefits remains efficient. Our findings help to explain the forces structuring bacterial genomes: coexistence of multiple plasmids in a genome is likely to require either rare positive selection in nature or nonredundancy of accessory gene functions among the coexisting plasmids.

Indexed as

Genetic FitnessGenome, BacterialSelection, GeneticAdaptation, PhysiologicalBacteriaPhenotypePlasmidsexperimental evolutionhorizontal gene transferplasmid biology

Identifiers

PMID33975933
PMCPMC8262885
OpenAlexW3160158783

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.