Evidence map›Paper›PMID 22941078›Full record

ArticleApplied and environmental microbiology2012

Antimicrobial susceptibility of Bacillus strains isolated from primary starters for African traditional bread production and characterization of the bacitracin operon and bacitracin biosynthesis.

David B Adimpong, Kim I Sørensen, Line Thorsen, Birgitte Stuer-Lauridsen, Warda S Abdelgadir, Dennis S Nielsen, Patrick M F Derkx, Lene Jespersen

Open access · greenAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed, 1 pooled it
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

64 citing papers in PubMed, 1 synthesis or guideline pooled it, 148 citations in OpenAlex.

  1. Pooled it
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  18. Characterization of heat, salt, acid, alkaline, and antibiotic stress response in soil isolate Bacillus subtilis strain PSK.A2.International microbiology : the official journal of the Spanish Society for Microbiology · 2025
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  19. Article
  20. Article

4 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

8 authors at 3 institutions in 2 countries.

David B AdimpongUniversity of Copenhagen, Faculty of Science, Department of Food Science, Frederiksberg, Denmark. dadimpong@life.ku.dk
Kim I Sørensen
Line Thorsen
Birgitte Stuer-Lauridsen
Warda S Abdelgadir
Dennis S Nielsen
Patrick M F Derkx
Lene Jespersen
Chr. Hansen (Denmark) · DKUniversity of Copenhagen · DKNational Centre for Research · SD

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bacillus spp. are widely used as feed additives and probiotics. However, there is limited information on their resistance to various antibiotics, and there is a growing concern over the transfer of antibiotic resistance genes. The MIC for 8 antibiotics was determined for 85 Bacillus species strains, Bacillus subtilis subsp. subtilis (n = 29), Bacillus licheniformis (n = 38), and Bacillus sonorensis (n = 18), all of which were isolated from starters for Sudanese bread production. All the strains were sensitive to tetracycline (8.0 mg/liter), vancomycin (4.0 mg/liter), and gentamicin (4.0 mg/liter) but resistant to streptomycin. Sensitivity to clindamycin, chloramphenicol, and kanamycin was species specific. The erythromycin resistance genes ermD and ermK were detected by PCR in all of the erythromycin-resistant (MIC, ≥16.0 mg/liter) B. licheniformis strains and one erythromycin-sensitive (MIC, 4.0 mg/liter) B. licheniformis strain. Several amino acid changes were present in the translated ermD and ermK nucleotide sequences of the erythromycin-sensitive strain, which could indicate ErmD and ErmK protein functionalities different from those of the resistance strains. The ermD and ermK genes were localized on an 11.4-kbp plasmid. All of the B. sonorensis strains harbored the bacitracin synthetase gene, bacA, and the transporter gene bcrA, which correlated with their observed resistance to bacitracin. Bacitracin was produced by all the investigated species strains (28%), as determined by ultra-high-definition quadrupole time-of-flight liquid chromatography-mass spectrometry (UHD-QTOF LC/MS). The present study has revealed species-specific variations in the antimicrobial susceptibilities of Bacillus spp. and provides new information on MIC values, as well as the occurrence of resistance genes in Bacillus spp., including the newly described species B. sonorensis.

Indexed as

Anti-Bacterial AgentsBacillusBacitracinBreadChromatography, LiquidMass SpectrometryMetabolic Networks and PathwaysMicrobial Sensitivity TestsMolecular Sequence DataOperonSequence Analysis, DNAAnti-Bacterial AgentsBacitracin

Identifiers

PMID22941078
PMCPMC3485967
OpenAlexW2134726936

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.