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JOURNAL OF GEOPHYSICAL RESEARCH,
VOL. 113,
G01S90,
11 PP., 2008
doi:10.1029/2006JG000319
Application of pulsed-excitation fluorescence imager for daylight detection of sparse life in tests in the Atacama Desert
Molecular Biosensor and Imaging Center, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Molecular Biosensor and Imaging Center, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Molecular Biosensor and Imaging Center, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Space Science Division, NASA Ames Research Center, Moffett Field, California, USA
SETI Institute, Mountain View, California, USA
Hydrology and Water Resources Department, University of Arizona, Tucson, Arizona, USA
Department of Earth and Space Sciences, University of California Los Angeles, Los Angeles, California, USA
Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, Tennessee, USA
Molecular Biosensor and Imaging Center, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Molecular Biosensor and Imaging Center, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Robotics Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Molecular Biosensor and Imaging Center, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Molecular Biosensor and Imaging Center, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Molecular Biosensor and Imaging Center, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Robotics Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Space Science Division, NASA Ames Research Center, Moffett Field, California, USA
Robotics Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
GROK Laboratory, University of Iowa, Iowa City, Iowa, USA
Planetary and Space Sciences Research Institute, Open University, Milton Keynes, UK
International Research School of Planetary Sciences, Pescara, Italy
International Research School of Planetary Sciences, Pescara, Italy
Robotics Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Robotics Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, Tennessee, USA
Eventscope, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Universidad Católica del Norte, Antofagasta, Chile
Robotics Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Space Science Division, NASA Ames Research Center, Moffett Field, California, USA
SETI Institute, Mountain View, California, USA
Molecular Biosensor and Imaging Center, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
A daylight fluorescence imager was deployed on an autonomous rover, Zoë, to detect life on the surface and shallow subsurface in regions of the Atacama Desert in Chile during field tests between 2003 and 2005. In situ fluorescent measurements were acquired from naturally fluorescing biomolecules such as chlorophyll and from specific fluorescent probes sprayed on the samples, targeting each of the four biological macromolecule classes: DNA, protein, lipid, and carbohydrate. RGB context images were also acquired. Preparatory reagents were applied to enhance the dye probe penetration and fluorescence intensity of chlorophyll. Fluorescence imager data sets from 257 samples were returned to the Life in the Atacama science team. A variety of visible life forms, such as lichens, were detected, and several of the dye probes produced signals from nonphotosynthetic microorganisms.
Received 20 September 2006; accepted 4 October 2007; published 18 January 2008.
Citation: (2008), Application of pulsed-excitation fluorescence imager for daylight detection of sparse life in tests in the Atacama Desert, J. Geophys. Res., 113, G01S90, doi:10.1029/2006JG000319.
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