Evidence map›Paper›PMID 22327596›Full record

ArticleApplied and environmental microbiology2012

Effects of sporulation conditions on the germination and germination protein levels of Bacillus subtilis spores.

Arturo Ramirez-Peralta, Pengfei Zhang, Yong-Qing Li, Peter Setlow

Abstract 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 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing 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

50 citing papers in PubMed.

  1. Effects of levels of purity of spores of twoApplied and environmental microbiology · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Sporulation at reduced water activity impairs germination kinetics ofApplied and environmental microbiology · 2025
    Article
  6. Germination and Heat Resistance ofFoods (Basel, Switzerland) · 2025
    Article
  7. Article
  8. Article
  9. EngineeredACS synthetic biology · 2025
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  10. Article
  11. Identification and characterization of theJournal of bacteriology · 2024
    Article
  12. Article
  13. Article
  14. EngineeredbioRxiv : the preprint server for biology · 2024
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Effect of oxygen on the germination and culturability of Bacillus atrophaeus spores.International microbiology : the official journal of the Spanish Society for Microbiology · 2022
    Article
  20. Review
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.

Arturo Ramirez-PeraltaDepartment of Molecular, Microbial and Structural Biology, University of Connecticut Health Center, Farmington, Connecticut, USA. setlow@nso2.uchc.edu
Pengfei Zhang
Yong-Qing Li
Peter Setlow

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bacillus subtilis spores prepared in rich medium germinated faster with nutrient germinants than poor-medium spores as populations in liquid and multiple individual spores on a microscope slide. Poor-medium spores had longer average lag times between mixing of spores with nutrient germinants and initiation of Ca-dipicolinic acid (CaDPA) release. Rich-medium spores made at 37°C germinated slightly faster with nutrient germinants than 23°C spores in liquid, but not when spores germinated on a slide. The difference in germination characteristics of these spore populations in liquid was paralleled by changes in expression levels of a transcriptional lacZ fusion to the gerA operon, encoding a germinant receptor (GR). Levels of GR subunits were 3- to 8-fold lower in poor-medium spores than rich-medium spores and 1.6- to 2-fold lower in 23°C spores than 37°C spores, and levels of the auxiliary germination protein GerD were 3.5- to 4-fold lower in poor medium and 23°C spores. In contrast, levels of another likely germination protein, SpoVAD, were similar in all these spores. These different spores germinated similarly with CaDPA, and poor-medium and 23°C spores germinated faster than rich-medium and 37°C spores, respectively, with dodecylamine. Since spore germination with CaDPA and dodecylamine does not require GerD or GRs, these results indicate that determinants of rates of nutrient germination of spores prepared differently are primarily the levels of the GRs that bind nutrient germinants and trigger germination and secondarily the levels of GerD.

Indexed as

Artificial Gene FusionBacillus subtilisBacterial Proteinsbeta-GalactosidaseCulture MediaGene Expression ProfilingGenes, ReporterSpores, BacterialTemperatureBacterial Proteinsbeta-GalactosidaseCulture Media

Identifiers

PMID22327596
PMCPMC3318806

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.