PMID: 11911146Jan 1, 1974Paper

Viability of Bacillus subtilis spores exposed to space environment in the M-191 experiment system aboard Apollo 16

Life Sciences and Space Research
H BuckerG R Taylor

Abstract

During the Apollo 16 space flight, in the experiment system M-191, (microbial response to space environment) spores of Bacillus subtilis 168 were exposed to space vacuum or solar UV irradiation with a peak wavelength of 254 nm or both. The effects of these space factors on the colony-forming ability of the spores were studied. It was found (i) that space vacuum alone did not affect the survival of pre-dried spores; (ii) that space vacuum in combination with solar UV irradiation with a peak wavelength of 254 nm had a synergistic effect, which may by attributed to a UV supersensitivity of the spores during vacuum exposure. These results agreed with findings of simulation experiments on earth. It was concluded that air dried spores may survive exposure to space vacuum if shielded against solar UV irradiation.

Citations

Mar 4, 2010·Microbiology and Molecular Biology Reviews : MMBR·Gerda HorneckRocco L Mancinelli
Jan 1, 1984·Origins of Life·G HorneckP Weber
Jun 12, 2012·Astrobiology·Elke RabbowGuenther Reitz
Dec 8, 2005·Applied and Environmental Microbiology·David A NewcombeKasthuri Venkateswaran
Sep 2, 2017·Frontiers in Microbiology·Elke RabbowRainer Willnecker
Feb 28, 2019·Astrobiology·Andrew C SchuergerGünther Reitz
Feb 1, 1993·Origins of Life and Evolution of the Biosphere : the Journal of the International Society for the Study of the Origin of Life·G Horneck
Jan 1, 1984·Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)·G HorneckP Weber

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