Survival of microbes in Earth's stratosphere.

@article{DasSarma2018SurvivalOM,
  title={Survival of microbes in Earth's stratosphere.},
  author={Priya DasSarma and Shiladitya DasSarma},
  journal={Current opinion in microbiology},
  year={2018},
  volume={43},
  pages={
          24-30
        }
}

Figures and Tables from this paper

Earth's Stratosphere and Microbial Life.
TLDR
Studies of Earth's atmosphere, with emphasis on the stratosphere, are reviewed, addressing implications for astrobiology, the dispersal of microbes around the authors' planet, planetary protection, and climate change.
Exploring Microbial Activity in Low-pressure Environments.
TLDR
Current knowledge on hypopiezophilic and hypopIEzotolerant microorganisms, methods for isolation and cultivation, justify why there should be more focus for future research, and discuss their importance for astrobiology are presented.
Survival of Extremophilic Yeasts in the Stratospheric Environment during Balloon Flights and in Laboratory Simulations
TLDR
The remarkable resilience of N. friedmannii under the extreme Mars-like conditions of the stratosphere confirms its potential as a eukaryotic model for astrobiology and strengthens the recent hypothesis that yeasts belonging to the Naganishia genus are fit for aerial dispersion, which might account for the observed abundance of this species in high-elevation soils.
Responses of Cyanobacterial Crusts and Microbial Communities to Extreme Environments of the Stratosphere
How microbial communities respond to extreme conditions in the stratosphere remains unclear. To test this effect, cyanobacterial crusts collected from Tengger Desert were mounted to high balloons and
Microbial Ecology in the Atmosphere: The Last Extreme Environment
The atmosphere is an extreme environment where organisms are subject to low temperatures and high radiation. Many of the microorganisms detected there appear in resistant forms or show mechanisms of
Microbial Ecology of the Planetary Boundary Layer
Aerobiology is a growing research area that covers the study of aerosols with a biological origin from the air that surrounds us to space through the different atmospheric layers. Bioaerosols have
Living at the Extremes: Extremophiles and the Limits of Life in a Planetary Context
TLDR
The current state of knowledge for the biospace in which life operates on Earth is reviewed and discussed in a planetary context, highlighting knowledge gaps and areas of opportunity.
Extremophilic models for astrobiology: haloarchaeal survival strategies and pigments for remote sensing
TLDR
This review focuses primarily on studies of two Haloarchaea, Halobacterium sp.
The Impacts of Microgravity on Bacterial Metabolism
TLDR
An overview of the effect spaceflight in general, and real or simulated microgravity in particular, has on primary and secondary metabolism is given to better understand how microbes can impact the people and systems aboard spacecraft.
...
...

References

SHOWING 1-10 OF 53 REFERENCES
Microbial survival in the stratosphere and implications for global dispersal
TLDR
Inactivation of most bacteria in the authors' simulation indicates that the stratosphere can be a critical barrier to long-distance microbial dispersal and that survival in the upper atmosphere may be constrained by UV irradiation.
Microbes in the upper atmosphere and unique opportunities for astrobiology research.
TLDR
relevant astrobiology questions that can be addressed with upper atmosphere microbiology studies and available sampling methods for collecting microbes at extreme altitudes are communicated.
Terrestrial Microorganisms at an Altitude of 20,000 m in Earth's Atmosphere
TLDR
All of the isolates identified were spore-forming pigmented fungi or bacteria of terrestrial origin and demonstrate that the presence of viable microorganisms in Earth's upper atmosphere may not be uncommon.
Effects of Stratospheric Conditions on the Viability, Metabolism and Proteome of Prokaryotic Cells
TLDR
Experimental results showed a significant effect of UV radiation (both laboratory UV and UV from the stratosphere) on the growth, reproduction, behavior and structure of bacterial cultures.
Clouds: A Transient and Stressing Habitat for Microorganisms
TLDR
This chapter synthesized the current knowledge about clouds as ecosystems which have been discovered very recently and briefly described the cloud habitat, and the abilities of microorganisms to survive in this stressing environment are described in details.
Survival of halophilic Archaea in Earth's cold stratosphere
TLDR
Genome-wide transcriptomic analysis was used to compare the two haloarchaea at optimum growth temperatures versus low temperatures supporting growth, and showed the cold-adapted species displayed perturbation of a majority of genes upon cold temperature exposure while the mesophilic species exhibited slightly reduced viability.
Atmosphere: A Source of Pathogenic or Beneficial Microbes?
Abstract: The atmosphere has been described as one of the last frontiers of biological exploration on Earth. The composition of microbial communities in the atmosphere is still not welldefined, and -
Investigation of cultivable microorganisms in the stratosphere collected by using a balloon in 2005
TLDR
Microbial sampling was conducted in the stratosphere above Pacifi c Ocean adjacent to Japan Main Island by using a balloon in June 2005, finding endospores are known to have higher UV-resistance than vegetative cells and 16S rDNA sequencing data appeared to be terrestrial origin.
Microbiome of the upper troposphere: Species composition and prevalence, effects of tropical storms, and atmospheric implications
TLDR
The findings presented here suggest that the microbiome is a dynamic and underappreciated aspect of the upper troposphere with potentially important impacts on the hydrological cycle, clouds, and climate.
...
...