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Rocks Could Reveal Secrets Of Life On Earth – And Mars

Date:
October 10, 2003
Source:
Engineering And Physical Science Research Council
Summary:
A new UK project could help detect evidence for life on Mars, as well as improve our understanding of how it evolved on Earth. The aim is to develop a technique that can identify biomolecules in water that have been trapped in rocks for millions to billions of years.

A new UK project could help detect evidence for life on Mars, as well as improve our understanding of how it evolved on Earth.

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The aim is to develop a technique that can identify biomolecules in water that have been trapped in rocks for millions to billions of years.

As well as analysing samples from Earth, the proposed technique could be used to obtain important information from water sealed within rock samples brought back from Mars, for example. The team will also consider how the technique could be miniaturised for incorporation into spacecraft which travel to other planets.

The three-year initiative will be carried out by geologists and bioengineers at the University of Aberdeen and the University of Glasgow, with funding from the UK's Engineering and Physical Sciences Research Council.

The research will explore significant technological challenges at the interface between the physical sciences and engineering. These include microfluidic methods for sample pre-concentration (ie the extraction and handling of exceptionally small amounts of fluid), single molecule detection technologies to locate very small amounts of biomaterials and the elimination of contaminants.

The project is highly innovative, attempting to access a source of biomolecules that has not been tapped before. Analysis of material dating from the time before the Earth's fossil record became extensive is a major project aim. This could significantly enhance our knowledge of the development of life on Earth.

The initiative is being led by Dr John Parnell of the University of Aberdeen's Geology and Petroleum Geology Department, in collaboration with Professor Jonathan Cooper of the University of Glasgow's Department of Electronics and Electrical Engineering. Dr. Parnell says: "If the technology proves successful, it will enable us to take advantage of a new source of information about the history of life on Earth, and potentially on other planets too".

###

Background

The research initiative, "Detection of Biomolecules from Evolving Life on Earth and Mars", will receive Engineering and Physical Sciences Research Council funding of nearly £428,000.

In the proposed technique, rock samples will first be crushed to release tiny volumes of trapped water. Bio-nanotechnology, and specifically SERRS (surface enhanced resonance Raman scattering), will then be used to detect the presence of tiny levels of biomolecules in the water. This will provide evidence for the existence and nature of any life that was in the samples when the water became sealed in the rock.

SERRS is a technique in which biomolecules can be identified by their interaction with electromagnetic fields at a modified metallic surface (usually silver or gold).

Biomolecules are organic compounds that originated in a biological (i.e. living) precursor.

The project team will start by proving the technique using material like DNA, but will go on to use molecules that represent the remains of bacterial cells.

The Engineering and Physical Sciences Research Council (EPSRC) is the UK's main agency for funding research in engineering and the physical sciences. EPSRC invests more than £400 million a year in research and postgraduate training to help the nation handle the next generation of technological change. The areas covered range from information technology to structural engineering and from mathematics to materials science. This research forms the basis for future economic development in the UK and improvements in everyone's health, lifestyle and culture. EPSRC also actively promotes public awareness of science and engineering. EPSRC works alongside other Research Councils with responsibility for other areas of research. The Research Councils work collectively on issues of common concern via Research Councils UK. Website address for more information on EPSRC: http://www.epsrc.ac.uk/


Story Source:

The above story is based on materials provided by Engineering And Physical Science Research Council. Note: Materials may be edited for content and length.


Cite This Page:

Engineering And Physical Science Research Council. "Rocks Could Reveal Secrets Of Life On Earth – And Mars." ScienceDaily. ScienceDaily, 10 October 2003. <www.sciencedaily.com/releases/2003/10/031010075123.htm>.
Engineering And Physical Science Research Council. (2003, October 10). Rocks Could Reveal Secrets Of Life On Earth – And Mars. ScienceDaily. Retrieved November 20, 2014 from www.sciencedaily.com/releases/2003/10/031010075123.htm
Engineering And Physical Science Research Council. "Rocks Could Reveal Secrets Of Life On Earth – And Mars." ScienceDaily. www.sciencedaily.com/releases/2003/10/031010075123.htm (accessed November 20, 2014).

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