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:3/22/2016)... and SANDY, Utah , ... which operates the highest sample volume laboratory in ... Genomics and UNIConnect, leaders in clinical sequencing informatics and ... launch of a project to establish the informatics infrastructure ... NSO has been contracted by the Ontario ...
(Date:3/15/2016)... New York , March 15, 2016 ... new market report published by Transparency Market Research "Digital Door ... Trends and Forecast 2015 - 2023," the global digital door ... US$ 731.9 Mn in 2014 and is forecast to grow ... 2023. Growth of micro, small and medium enterprises (MSMEs) across ...
(Date:3/11/2016)... , March 11, 2016 http://www.apimages.com ) ... Cross reference: Picture is available at AP Images ( http://www.apimages.com ) ... DERMALOG will be used to produce the new refugee identity cards. ... biometric innovations, at CeBIT in Hanover next ... from DERMALOG will be used to produce the new refugee identity ...
Breaking Biology News(10 mins):
(Date:5/4/2016)... ... May 04, 2016 , ... Proove Biosciences, Inc. ... a strategic partnership with McGill University . The partnership is designed to advance ... in order to help patients in pain. With the new agreement, researchers at Proove ...
(Date:5/4/2016)... ... May 04, 2016 , ... The Children’s Tumor Foundation announced its annual month-long ... grow on nerves throughout the body. It affects 1 in 3,000 people of all ... during the month of May, as well as online activities, Neurofibromatosis Awareness Month and ...
(Date:5/4/2016)... Missouri (PRWEB) , ... May 04, 2016 , ... PBI-Gordon ... Professional and Agricultural Sales. , Doug began his career at PBI-Gordon in February ... served in a wide variety of roles, ranging from customer service to national product ...
(Date:5/3/2016)... May 3, 2016 ... Drug Discovery, Gene Expression) Lab-on-a-chip (IVD & ... Institutes, Diagnostics Centers), Fabrication Technology (Microarrays, Microfluidics) ... the market is expected to reach USD ... Billion in 2015, growing at a CAGR ...
Breaking Biology Technology: