Evidence map›Paper›PMID 19801410›Full record

ArticleJournal of bacteriology2009

Nitric oxide signaling in Pseudomonas aeruginosa biofilms mediates phosphodiesterase activity, decreased cyclic di-GMP levels, and enhanced dispersal.

Nicolas Barraud, David Schleheck, Janosch Klebensberger, Jeremy S Webb, Daniel J Hassett, Scott A Rice, Staffan Kjelleberg

Open access · greenAbstract read
In one paragraph

Article in Journal of bacteriology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 226 papers.

0numbers the graph read from it
0cells of the map it votes in
226citing papers in PubMed
7.4field-weighted citation impact, top 2% 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

226 citing papers in PubMed, 496 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
  5. c-di-GMP is a key regulator of Pseudomonas aeruginosa response to UVA radiation.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2026
    Article
  6. Article
  7. Article
  8. Development of a light-induced gas phase nitric oxide generator and its use in killing biofilm bacteria in vitro and ex vivo.Journal of controlled release : official journal of the Controlled Release Society · 2026
    Article
  9. UnderstandingMicroorganisms · 2026
    Review
  10. Review
  11. Article
  12. Nitric oxide promotes rapid development of motility to accelerate biofilm dispersal inProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  13. Review
  14. Article
  15. Microbiology spectrum · 2025
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

166 more citing papers are in PubMed but not listed here.

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

7 authors at 2 institutions in 2 countries.

Nicolas BarraudSchool of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia.
David Schleheck
Janosch Klebensberger
Jeremy S Webb
Daniel J Hassett
Scott A Rice
Staffan Kjelleberg
UNSW Sydney · AUUniversity of Cincinnati Medical Center · US

Funding

Role of OxyR in P. aeruginosa Biofilm Resistance to H202R01GM069845 · NIGMS · UNIVERSITY OF CINCINNATI · PI HASSETT, DANIEL J. · 2004 to 2007
$1.2M
Biotechnology and Biological Sciences Research Council BB/C520655/1NIGMS NIH HHS GM-69845NIGMS NIH HHS R01 GM069845
6 · The paper itself

Abstract

Bacteria in biofilms often undergo active dispersal events and revert to a free-swimming, planktonic state to complete the biofilm life cycle. The signaling molecule nitric oxide (NO) was previously found to trigger biofilm dispersal in the opportunistic pathogen Pseudomonas aeruginosa at low, nontoxic concentrations (N. Barraud, D. J. Hassett, S. H. Hwang, S. A. Rice, S. Kjelleberg, and J. S. Webb, J. Bacteriol. 188:7344-7353, 2006). NO was further shown to increase cell motility and susceptibility to antimicrobials. Recently, numerous studies revealed that increased degradation of the secondary messenger cyclic di-GMP (c-di-GMP) by specific phosphodiesterases (PDEs) triggers a planktonic mode of growth in eubacteria. In this study, the potential link between NO and c-di-GMP signaling was investigated by performing (i) PDE inhibitor studies, (ii) enzymatic assays to measure PDE activity, and (iii) direct quantification of intracellular c-di-GMP levels. The results suggest a role for c-di-GMP signaling in triggering the biofilm dispersal event induced by NO, as dispersal requires PDE activity and addition of NO stimulates PDE and induces the concomitant decrease in intracellular c-di-GMP levels in P. aeruginosa. Furthermore, gene expression studies indicated global responses to low, nontoxic levels of NO in P. aeruginosa biofilms, including upregulation of genes involved in motility and energy metabolism and downregulation of adhesins and virulence factors. Finally, site-directed mutagenesis of candidate genes and physiological characterization of the corresponding mutant strains uncovered that the chemotaxis transducer BdlA is involved in the biofilm dispersal response induced by NO.

Indexed as

BiofilmsGene Expression Regulation, BacterialPseudomonas aeruginosaSignal TransductionCyclic GMPNitric OxidePhosphoric Diester HydrolasesPolymerase Chain Reactionbis(3',5')-cyclic diguanylic acidCyclic GMPNitric OxidePhosphoric Diester Hydrolases

Identifiers

PMID19801410
PMCPMC2786556
OpenAlexW2152869680

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.