Evidence map›Paper›PMID 26728027›Full record

ArticleBMC microbiology2016

Contributions of tropodithietic acid and biofilm formation to the probiotic activity of Phaeobacter inhibens.

Wenjing Zhao, Christine Dao, Murni Karim, Marta Gomez-Chiarri, David Rowley, David R Nelson

Open access · goldAbstract read
In one paragraph

Article in BMC microbiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
24.6field-weighted citation impact, top 1% 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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 423 citations in OpenAlex.

  1. WaterborneJournal of water and health · 2024
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. The ProbioticMicroorganisms · 2023
    Article
  10. Co-Culturing Microalgae withMicroorganisms · 2023
    Article
  11. Review
  12. Article
  13. Article
  14. Applied and environmental microbiology · 2022
    Article
  15. Review
  16. Article
  17. Article
  18. Review
  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

6 authors at 1 institution in 1 country.

Wenjing ZhaoDepartment of Cell and Molecular Biology, University of Rhode Island, 120 Flagg Rd., Kingston, RI, 02881, USA. wenjing_zhao@hms.harvard.edu.
Christine DaoBiomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, RI, 02881, USA. Christine.Dao@umassd.edu.
Murni KarimFisheries, Animal and Veterinary Sciences, University of Rhode Island, Kingston, RI, 02881, USA. murnimarlina@upm.edu.my.
Marta Gomez-ChiarriFisheries, Animal and Veterinary Sciences, University of Rhode Island, Kingston, RI, 02881, USA. gomezchi@uri.edu.
David RowleyBiomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, RI, 02881, USA. drowley@uri.edu.
David R NelsonDepartment of Cell and Molecular Biology, University of Rhode Island, 120 Flagg Rd., Kingston, RI, 02881, USA. dnelson@uri.edu.
University of Rhode Island · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe probiotic bacterium Phaeobacter inhibens strain S4Sm, isolated from the inner shell surface of a healthy oyster, secretes the antibiotic tropodithietic acid (TDA), is an excellent biofilm former, and increases oyster larvae survival when challenged with bacterial pathogens. In this study, we investigated the specific roles of TDA secretion and biofilm formation in the probiotic activity of S4Sm.

resultsMutations in clpX (ATP-dependent ATPase) and exoP (an exopolysaccharide biosynthesis gene) were created by insertional mutagenesis using homologous recombination. Mutation of clpX resulted in the loss of TDA production, no decline in biofilm formation, and loss of the ability to inhibit the growth of Vibrio tubiashii and Vibrio anguillarum in co-colonization experiments. Mutation of exoP resulted in a ~60% decline in biofilm formation, no decline in TDA production, and delayed inhibitory activity towards Vibrio pathogens in co-colonization experiments. Both clpX and exoP mutants exhibited reduced ability to protect oyster larvae from death when challenged by Vibrio tubiashii. Complementation of the clpX and exoP mutations restored the wild type phenotype. We also found that pre-colonization of surfaces by S4Sm was critical for this bacterium to inhibit pathogen colonization and growth.

conclusionsOur observations demonstrate that probiotic activity by P. inhibens S4Sm involves contributions from both biofilm formation and the production of the antibiotic TDA. Further, probiotic activity also requires colonization of surfaces by S4Sm prior to the introduction of the pathogen.

Indexed as

BiofilmsAnimalsBacterial ProteinsOstreidaeProbioticsRhodobacteraceaeTropoloneVibrioVibrio InfectionsBacterial Proteinstropodithietic acidTropolone

Identifiers

PMID26728027
PMCPMC4700733
OpenAlexW2230907825

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.