Navigation Links
Earth microbes may contaminate the search for life on Mars
Date:4/27/2010

Bacteria common to spacecraft may be able to survive the harsh environs of Mars long enough to inadvertently contaminate Mars with terrestrial life according to research published in the April 2010 issue of the journal Applied and Environmental Microbiology.

The search for life on Mars remains a stated goal of NASA's Mars Exploration Program and Astrobiology Institutes. To preserve the pristine environments, the bioloads on spacecraft headed to Mars are subject to sterilization designed to prevent the contamination of the Martian surface.

Despite sterilization efforts made to reduce the bioload on spacecraft, recent studies have shown that diverse microbial communities remain at the time of launch. The sterile nature of spacecraft assembly facilities ensures that only the most resilient species survive, including acinetobacter, bacillus, escherichia, staphylococcus and streptococcus.

Researchers from the University of Central Florida replicated Mars-like conditions by inducing desiccation, hypobaria, low temperatures, and UV irradiation. During the week-long study they found that Escherichia coli, a potential spacecraft contaminant, may likely survive but not grow on the surface of Mars if it were shielded from UV irradiation by thin layers of dust or UV-protected niches in spacecraft.

"If long-term microbial survival is possible on Mars, then past and future explorations of Mars may provide the microbial inoculum for seeding Mars with terrestrial life," say the researchers. "Thus, a diversity of microbial species should be studied to characterize their potential for long term survival on Mars."


'/>"/>

Contact: Garth Hogan
ghogan@asmusa.org
American Society for Microbiology
Source:Eurekalert

Page: 1

Related biology news :

1. Global Warming and the Habitability of Planet Earth, Sept. 26
2. Good earth: Brown chemists show origin of soil-scented geosmin
3. Scientists launch deep-sea scientific drilling program to study volatile earthquake zone
4. Biogeochemistry -- A window into the Earths ecological health
5. How did chemical constituents essential to life arise on primitive Earth?
6. Scientists warn that species extinction could reduce productivity of plants on Earth by half
7. Earth Observation essential for geohazard mitigation
8. Liquid crystal phases of tiny DNA molecules point up new scenario for first life on Earth
9. Planting carbon deep in the earth -- rather than the greenhouse
10. Evolution tied to Earth movement
11. Down to earth remedies for chimps
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/13/2017)... N.Y. , Jan. 13, 2017 ... technology solutions for the homecare industry, including Electronic ... homecare industry expert, Justin Jugs, as Senior Vice ... more than 15 years of homecare experience to ... in developing strategic plans to align Sandata,s suite ...
(Date:1/12/2017)... 12, 2017 A new report by Allied Market Research, titled, ... biometric technology market is expected to generate revenue of $10.72 billion by 2022, with ... Continue Reading ... Allied Market Research Logo ...      (Logo: http://photos.prnewswire.com/prnh/20140911/647229) In the ...
(Date:1/6/2017)... LA JOLLA, Calif. , Jan. 6, 2017 ... Phase 1 safety studies in healthy volunteers of ... CM4620, intended to treat acute pancreatitis. ... pancreas, is typically a mild disorder, but can ... to organ failure and sepsis, where extended hospital ...
Breaking Biology News(10 mins):
(Date:1/21/2017)... (PRWEB) , ... January 20, 2017 , ... ... consulting and resource to the healthcare industry ( http://www.gandlscientific.com ), has announced the ... expanding team of clinical and scientific consultants and contractors. This is the latest ...
(Date:1/21/2017)... N.J. , Jan. 20, 2017 ... "Company"), a company that provides clinically useful molecular ... it has entered into a securities purchase agreement ... of 855,000 shares of common stock in a ... the Company has agreed to sell to the ...
(Date:1/21/2017)... , Jan. 21, 2017   Boston Biomedical ... compounds designed to target cancer stemness pathways, today presented ... compound, napabucasin, at the 2017 American Society of Clinical ... Francisco . In a Phase ... agent designed to inhibit cancer stemness pathways by targeting ...
(Date:1/20/2017)... , Jan. 20, 2017 Ginkgo Bioworks, ... Gen9, a pioneer in the synthesis and assembly ... expertise in assembling pathway-length synthetic DNA into Ginkgo,s ... capacity in the construction of new organism designs ... "Gen9 was founded to significantly increase ...
Breaking Biology Technology: