Evidence map›Paper›PMID 22420404›Full record

ArticleBMC microbiology2012

Role of the gerA operon in L-alanine germination of Bacillus licheniformis spores.

Irene S Løvdal, Cecilie From, Elisabeth H Madslien, Kristin Cecilia S Romundset, Elin Klufterud, Jan Thomas Rosnes, Per Einar Granum

Open access · goldAbstract read
In one paragraph

Article in BMC microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.4field-weighted citation impact, top 17% 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

12 citing papers in PubMed, 28 citations in OpenAlex.

  1. Characterization of germinant receptors ofCurrent research in microbial sciences · 2025
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  3. Wheat Flour Pasta CombiningFoods (Basel, Switzerland) · 2024
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  4. Article
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  6. Nutrient L-Alanine-Induced Germination ofFrontiers in microbiology · 2021
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. 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

7 authors at 4 institutions in 1 country.

Irene S LøvdalNofima AS, Department of Process Technology, Måltidets hus, Richard Johnsens gate 4, P Box 8034, N-4068 Stavanger, Norway.
Cecilie From
Elisabeth H Madslien
Kristin Cecilia S Romundset
Elin Klufterud
Jan Thomas Rosnes
Per Einar Granum
Norwegian University of Life Sciences · NONofima · NONorsk Geografisk Selskap · NONorwegian Defence Research Establishment · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe genome of Bacillus licheniformis DSM 13 harbours three neighbouring open reading frames showing protein sequence similarities to the proteins encoded from the Bacillus subtilis subsp. subtilis 168 gerA operon, GerAA, GerAB and GerAC. In B. subtilis, these proteins are assumed to form a germinant receptor involved in spore germination induced by the amino acid L-alanine.

resultsIn this study we show that disruption of the gerAA gene in B. licheniformis MW3 hamper L-alanine and casein hydrolysate-triggered spore germination, measured by absorbance at 600 nm and confirmed by phase contrast microscopy. This ability was restored by complementation with a plasmid-borne copy of the gerA locus. Addition of D-alanine in the casein hydrolysate germination assay abolished germination of both B. licheniformis MW3 and the complementation mutant. Germination of both B. licheniformis MW3 and the gerA disruption mutant was induced by the non-nutrient germinant Ca2+-Dipicolinic acid.

conclusionsThese results demonstrate that the B. licheniformis MW3 gerA locus is involved in germination induced by L-alanine and potentially other components present in casein hydrolysate.

Indexed as

OperonAlanineBacillusBacterial ProteinsCaseinsGene Expression Regulation, BacterialGenetic Complementation TestMembrane ProteinsMolecular Sequence DataMutagenesisSpores, BacterialAlanineBacterial Proteinscasein hydrolysateCaseinsMembrane Proteins

Identifiers

PMID22420404
PMCPMC3359204
OpenAlexW2080942838

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.