Evidence map›Paper›PMID 17526777›Full record

ArticleApplied and environmental microbiology2007

Transcriptome analysis reveals that multidrug efflux genes are upregulated to protect Pseudomonas aeruginosa from pentachlorophenol stress.

Jocelyn Fraga Muller, Ann M Stevens, Johanna Craig, Nancy G Love

Abstract read
In one paragraph

Article in Applied and environmental microbiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
–field-weighted citation impact
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

24 citing papers in PubMed.

  1. Review
  2. Effect of 5-fluorouracil onFrontiers in microbiology · 2025
    Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Oxidative Stress Response inPathogens (Basel, Switzerland) · 2021
    Review
  9. Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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.

Jocelyn Fraga MullerDepartment of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.
Ann M Stevens
Johanna Craig
Nancy G Love

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Through chemical contamination of natural environments, microbial communities are exposed to many different types of chemical stressors; however, research on whole-genome responses to this contaminant stress is limited. This study examined the transcriptome response of a common soil bacterium, Pseudomonas aeruginosa, to the common environmental contaminant pentachlorophenol (PCP). Cells were grown in chemostats at a low growth rate to obtain substrate-limited, steady-state, balanced-growth conditions. The PCP stress was administered as a continuous increase in concentration, and samples taken over time were examined for physiological function changes with whole-cell acetate uptake rates (WAURs) and cell viability and for gene expression changes by Affymetrix GeneChip technology and real-time reverse transcriptase PCR. Cell viability, measured by heterotrophic plate counts, showed a moderately steady decrease after exposure to the stressor, but WAURs did not change in response to PCP. In contrast to the physiological data, the microarray data showed significant changes in the expression of several genes. In particular, genes coding for multidrug efflux pumps, including MexAB-OprM, were strongly upregulated. The upregulation of these efflux pumps protected the cells from the potentially toxic effects of PCP, allowing the physiological whole-cell function to remain constant.

Indexed as

Gene Expression ProfilingGene Expression Regulation, BacterialAcetic AcidATP-Binding Cassette, Sub-Family C ProteinsBacterial ProteinsDown-RegulationDrug Resistance, BacterialEnvironmental PollutantsMicrobial ViabilityOligonucleotide Array Sequence AnalysisPentachlorophenolPseudomonas aeruginosaReverse Transcriptase Polymerase Chain ReactionRNA, BacterialRNA, MessengerSigma FactorAcetic AcidATP-Binding Cassette, Sub-Family C ProteinsBacterial ProteinsEnvironmental PollutantsPentachlorophenolRNA, BacterialRNA, MessengerSigma Factorsigma factor KatF protein, Bacteria

Identifiers

PMID17526777
PMCPMC1932803

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.