Evidence map›Paper›PMID 30513104›Full record

ArticlePloS one2018

Experimental studies addressing the longevity of Bacillus subtilis spores - The first data from a 500-year experiment.

Nikea Ulrich, Katja Nagler, Michael Laue, Charles S Cockell, Peter Setlow, Ralf Moeller

Abstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing 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

41 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Viable, Multi-Drug-Resistant Bacteria Recovered from E-Liquids Used with Commercial Electronic Cigarettes.International journal of environmental research and public health · 2025
    Article
  7. Article
  8. Article
  9. Journal of agricultural and food chemistry · 2025
    Article
  10. Article
  11. Article
  12. The Utilization ofMicroorganisms · 2024
    Article
  13. Extremophiles in Space Exploration.Indian journal of microbiology · 2024
    Review
  14. Article
  15. Article
  16. Parameter evaluation for developing phosphate-solubilizing Bacillus inoculants.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2024
    Article
  17. Germicidal efficacy of continuous and pulsed ultraviolet-C radiation on pathogen models and SARS-CoV-2.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2024
    Article
  18. Review
  19. Review
  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

6 authors.

Nikea UlrichSpace Microbiology Research Group, Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR e.V.), Cologne (Koeln), Germany.
Katja NaglerSpace Microbiology Research Group, Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR e.V.), Cologne (Koeln), Germany.
Michael LaueAdvanced Light and Electron Microscopy (ZBS 4), Robert Koch Institute, Berlin, Germany.
Charles S CockellSchool of Physics and Astronomy, UK Center for Astrobiology, University of Edinburgh, Edinburgh, United Kingdom.
Peter SetlowDepartment of Molecular Biology and Biophysics, University of Connecticut Health Center, Farmington, Connecticut, United States of America.
Ralf MoellerSpace Microbiology Research Group, Radiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR e.V.), Cologne (Koeln), Germany.ORCID 0000-0002-2371-0676

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The ability to form endospores allows certain Gram-positive bacteria (e.g. Bacillus subtilis) to challenge the limits of microbial resistance and survival. Thus, B. subtilis is able to tolerate many environmental extremes by transitioning into a dormant state as spores, allowing survival under otherwise unfavorable conditions. Despite thorough study of spore resistance to external stresses, precisely how long B. subtilis spores can lie dormant while remaining viable, a period that potentially far exceeds the human lifespan; is not known although convincing examples of long term spore survival have been recorded. In this study, we report the first data from a 500-year microbial experiment, which started in 2014 and will finish in 2514. A set of vials containing a defined concentration of desiccated B. subtilis spores is opened and tested for viability every two years for the first 24 years and then every 25 years until experiment completion. Desiccated baseline spore samples were also exposed to environmental stresses, including X-rays, 254 nm UV-C, 10% H2O2, dry heat (120°C) and wet heat (100°C) to investigate how desiccated spores respond to harsh environmental conditions after long periods of storage. Data from the first 2 years of storage show no significant decrease in spore viability. Additionally, spores of B. subtilis were subjected to various short-term storage experiments, revealing that space-like vacuum and high NaCl concentration negatively affected spore viability.

Indexed as

Microbial ViabilityBacillus subtilisDesiccationHot TemperatureLongevityMicrobiological TechniquesModels, TheoreticalSpores, BacterialTime Factors

Identifiers

PMID30513104
PMCPMC6279046

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.