Evidence map›Paper›PMID 34516283›Full record

ArticleJournal of bacteriology2021

Differential Surface Competition and Biofilm Invasion Strategies of Pseudomonas aeruginosa PA14 and PAO1.

Swetha Kasetty, Stefan Katharios-Lanwermeyer, George A O'Toole, Carey D Nadell

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.4field-weighted citation impact, top 19% 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

14 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
  2. R pyocin sensitivity ofJournal of medical microbiology · 2026
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  5. ThemBio · 2026
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  6. Flagellum-driven motility enhancesApplied and environmental microbiology · 2025
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  9. Review
  10. Antibiotics (Basel, Switzerland) · 2024
    Review
  11. Increased tolerance to commonly used antibiotics in aMicrobiology (Reading, England) · 2024
    Article
  12. Review
  13. Article
  14. Article
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

4 authors at 1 institution in 1 country.

Swetha Kasetty *Department of Biological Sciences, Dartmouth College, Hanover, New Hampshire, USA.
Stefan Katharios-Lanwermeyer *Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA.
George A O'TooleDepartment of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA.ORCID 0000-0002-2861-4392
Carey D NadellDepartment of Biological Sciences, Dartmouth College, Hanover, New Hampshire, USA.ORCID 0000-0003-1751-4895
Dartmouth College · US

Funding

Translational Research CoreP30DK117469 · NIDDK · DARTMOUTH COLLEGE · PI DEAN R MADDEN · 2018 to 2026
$13.9M
cdiGMP regulation of Biofilm FormationR37AI083256 · NIAID · DARTMOUTH COLLEGE · PI O'TOOLE, GEORGE A. · 2014 to 2023
$4.7M
NIAID NIH HHS R37 AI083256NIDDK NIH HHS P30 DK117469NIH HHS P30-DK117469NIH HHS R37-AI83256-06
6 · The paper itself

Abstract

Pseudomonas aeruginosa strains PA14 and PAO1 are among the two best-characterized model organisms used to study the mechanisms of biofilm formation while also representing two distinct lineages of P. aeruginosa. Previous work has shown that PA14 and PAO1 use different strategies for surface colonization; they also have different extracellular matrix composition and different propensities to disperse from biofilms back into the planktonic phase surrounding them. We expand on this work here by exploring the consequences of these different biofilm production strategies during direct competition. Using differentially labeled strains and microfluidic culture methods, we show that PAO1 can outcompete PA14 in direct competition during early colonization and subsequent biofilm growth, that they can do so in constant and perturbed environments, and that this advantage is specific to biofilm growth and requires production of the Psl polysaccharide. In contrast, P. aeruginosa PA14 is better able to invade preformed biofilms and is more inclined to remain surface-associated under starvation conditions. These data together suggest that while P. aeruginosa PAO1 and PA14 are both able to effectively colonize surfaces, they do so in different ways that are advantageous under different environmental settings.

Indexed as

BiofilmsCell DeathLab-On-A-Chip DevicesPseudomonas aeruginosaSurface PropertiesbiofilmcolonizationcompetitiondispersalexopolysaccharideinvasionPseudomonas aeruginosastarvation

Identifiers

PMID34516283
PMCPMC8544417
OpenAlexW3201241770

What OpenQuestion holds

Textmetadata
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.