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:2/24/2017)... -- EyeLock LLC, a leader of iris-based identity authentication ... solution on the latest Qualcomm® Snapdragon™ 835 mobile ... Congress 2017 (February 27 – March 2, ... Stand 3E10. The Snapdragon 835 ... combination of hardware, software and biometrics technologies ...
(Date:2/21/2017)... , February 21, 2017 ... 70 Millionen US-Dollar wachsen. Nach einem Gespräch mit mehr als ... einige Hindernisse zu überwinden gilt, um diese Prognose zu ... ... anderem die Mobilisierung der finanziellen Mittel für die Biobank, ...
(Date:2/13/2017)... FRANCISCO , Feb. 13, 2017  RSA ... centralized platform that is designed to enhance fraud ... latest release in the RSA Fraud & Risk ... enable organizations to leverage additional insights from internal ... tools to better protect their customers from targeted ...
Breaking Biology News(10 mins):
(Date:3/24/2017)... , March 24, 2017  Infectex Ltd., a ... today announced positive results of a Phase 2b-3 clinical ... regimen in patients with multidrug-resistant pulmonary tuberculosis (MDR-TB). SQ109 ... at Sequella, Inc. ( USA ) and ... A total of 140 patients were enrolled in a ...
(Date:3/24/2017)... March 24, 2017 Agenus Inc. (NASDAQ: AGEN), ... antibodies and cancer vaccines, today announced participation at the ...  Annual William Blair and Maidstone Life Sciences conference "Cancer ... in New York, NY . Agenus ... 29 at 9:40 am: Robert B. Stein , ...
(Date:3/23/2017)... , March 23, 2017  SeraCare ... to global in vitro diagnostics manufacturers and ... the industry,s first multiplexed Inherited Cancer ... testing by next-generation sequencing (NGS). The Seraseq™ ... developed with input from industry experts to ...
(Date:3/23/2017)... NetworkNewsWire Editorial Coverage  ... Cancer remains one of the world,s ... systems, in terms of costs and resources. However, as the ... of innovative and efficient therapies that demonstrate higher chances of ... cancer treatments, a growing number of patients receiving immuno-oncology therapies ...
Breaking Biology Technology: