Evidence map›Paper›PMID 24163340›Full record

ArticleJournal of bacteriology2014

Growth phase and pH influence peptide signaling for competence development in Streptococcus mutans.

Qiang Guo, Sang-Joon Ahn, Justin Kaspar, Xuedong Zhou, Robert A Burne

Abstract read
In one paragraph

Article in Journal of bacteriology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing 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

33 citing papers in PubMed.

  1. Development of Quorum Sensing Modulators of Streptococcus constellatus.Chembiochem : a European journal of chemical biology · 2026
    Article
  2. Review
  3. Mechanistic Insights into the Anti-Virulence Effects ofAntibiotics (Basel, Switzerland) · 2026
    Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Novel Probiotic Mechanisms of the Oral BacteriumApplied and environmental microbiology · 2019
    Article
  12. Article
  13. Expanding the Vocabulary of Peptide Signals inFrontiers in cellular and infection microbiology · 2019
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Intercellular Communication via theJournal of bacteriology · 2017
    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

5 authors.

Qiang GuoState Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
Sang-Joon Ahn
Justin Kaspar
Xuedong Zhou
Robert A Burne

Funding

Comprehensive Training Program in Oral BiologyT90DE021990 · NIDCR · UNIVERSITY OF FLORIDA · PI Jose A Lemos · 2011 to 2026
$8.2M
GENETICS AND PHYSIOLOGY OF ORAL BIOFILMSR01DE013239 · NIDCR · UNIVERSITY OF ROCHESTER · PI BURNE, ROBERT A · 1999 to 2019
$6.6M
Microfluidic devices for studying genetic competence in Streptococcus mutansR21DE018826 · NIDCR · UNIVERSITY OF FLORIDA · PI HAGEN, STEPHEN JAMES · 2009 to 2010
$384k
NIDCR NIH HHS DE13239NIDCR NIH HHS DE18826NIDCR NIH HHS R01 DE013239NIDCR NIH HHS R21 DE018826NIDCR NIH HHS T90 DE021990
6 · The paper itself

Abstract

The development of competence by the dental caries pathogen Streptococcus mutans is mediated primarily through the alternative sigma factor ComX (SigX), which is under the control of multiple regulatory systems and activates the expression of genes involved in DNA uptake and recombination. Here we report that the induction of competence and competence gene expression by XIP (sigX-inducing peptide) and CSP (competence-stimulating peptide) is dependent on the growth phase and that environmental pH has a potent effect on the responses to XIP. A dramatic decline in comX and comS expression was observed in mid- and late-exponential-phase cells. XIP-mediated competence development and responses to XIP were optimal around a neutral pH, although mid-exponential-phase cells remained refractory to XIP treatment, and acidified late-exponential-phase cultures were resistant to killing by high concentrations of XIP. Changes in the expression of the genes for the oligopeptide permease (opp), which appears to be responsible for the internalization of XIP, could not entirely account for the behaviors observed. Interestingly, comS and comX expression was highly induced in response to endogenously overproduced XIP or ComS in mid-exponential-phase cells. In contrast to the effects of pH on XIP, competence induction and responses to CSP in complex medium were not affected by pH, although a decreased response to CSP in cells that had exited early-exponential phase was observed. Collectively, these results indicate that competence development may be highly sensitive to microenvironments within oral biofilms and that XIP and CSP signaling in biofilms could be spatially and temporally heterogeneous.

Indexed as

DNA Transformation CompetenceSignal TransductionBacterial ProteinsGene Expression ProfilingGene Expression Regulation, BacterialHydrogen-Ion ConcentrationStreptococcus mutansBacterial Proteinscompetence factor, Streptococcus

Identifiers

PMID24163340
PMCPMC3911236

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.