Evidence map›Paper›PMID 20197502›Full record

ReviewMicrobiology and molecular biology reviews : MMBR2010

Space microbiology.

Gerda Horneck, David M Klaus, Rocco L Mancinelli

Abstract readReview
In one paragraph

Review in Microbiology and molecular biology reviews : MMBR, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 201 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
201citing papers in PubMed, 1 pooled it
–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

201 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Photoperiod-driven gene regulation in the brain ofFrontiers in endocrinology · 2026
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Cyanobacteria Under UV Radiation: General Insights into Stress Responses.International journal of molecular sciences · 2025
    Review
  15. Article
  16. Microbiology spectrum · 2025
    Article
  17. Article
  18. Article
  19. Article
  20. Article

141 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

3 authors.

Gerda HorneckMail Stop 239-4, NASA Ames Research Center, Moffett Field, CA 94035, USA.
David M Klaus
Rocco L Mancinelli

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The responses of microorganisms (viruses, bacterial cells, bacterial and fungal spores, and lichens) to selected factors of space (microgravity, galactic cosmic radiation, solar UV radiation, and space vacuum) were determined in space and laboratory simulation experiments. In general, microorganisms tend to thrive in the space flight environment in terms of enhanced growth parameters and a demonstrated ability to proliferate in the presence of normally inhibitory levels of antibiotics. The mechanisms responsible for the observed biological responses, however, are not yet fully understood. A hypothesized interaction of microgravity with radiation-induced DNA repair processes was experimentally refuted. The survival of microorganisms in outer space was investigated to tackle questions on the upper boundary of the biosphere and on the likelihood of interplanetary transport of microorganisms. It was found that extraterrestrial solar UV radiation was the most deleterious factor of space. Among all organisms tested, only lichens (Rhizocarpon geographicum and Xanthoria elegans) maintained full viability after 2 weeks in outer space, whereas all other test systems were inactivated by orders of magnitude. Using optical filters and spores of Bacillus subtilis as a biological UV dosimeter, it was found that the current ozone layer reduces the biological effectiveness of solar UV by 3 orders of magnitude. If shielded against solar UV, spores of B. subtilis were capable of surviving in space for up to 6 years, especially if embedded in clay or meteorite powder (artificial meteorites). The data support the likelihood of interplanetary transfer of microorganisms within meteorites, the so-called lithopanspermia hypothesis.

Indexed as

Environmental MicrobiologyExtraterrestrial EnvironmentBacillus subtilisCosmic RadiationLichensMeteoroidsMicrobial ViabilitySpores, BacterialUltraviolet Rays

Identifiers

PMID20197502
PMCPMC2832349

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.