Biology
Scientific paper
Mar 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.545..153g&link_type=abstract
In: Proceedings of the Third European Workshop on Exo-Astrobiology, 18 - 20 November 2003, Madrid, Spain. Ed.: R. A. Harris & L.
Biology
Exobiology, Astrobiology
Scientific paper
The bacterium Escherichia coli is one the most widely known and studied living organisms. Here we report the discovery of hitherto unknown colonial and multicolonial patterns of E. coli strain MG1655 observed in multiple colonies grown in shared nutritional and identical environmental conditions. Bacterial growth in shared environments gives rise to a wealth of beautiful patterns of high symmetry and geometric regularity. We also document here the dramatic effect that glucose has on the emergent colony morphology. The colonial and muticolonial growth patterns are typically on the order of centimeters (cm), and thus suggest that bacterial life may leave "imprints" at a scale greater than those now being considered. This is of prime relevance for current search programs.
Gomez-Gomez José María
Hochberg David
Rodríguez Manfredi José Antonio
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