Viable green algae and cyanobacteria within terrestrial permafrost

Details Viable green algae and cyanobacteria within terrestrial permafrost Viable green algae and cyanobacteria within terrestrial permafrost

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.518..295v&link_type=abstract

In: Proceedings of the First European Workshop on Exo-Astrobiology, 16 - 19 September 2002, Graz, Austria. Ed.: Huguette Lacoste

Biology

Permafrost: Life, Biology

Scientific paper

Viable permafrost algae have preserved their morphological characteristics and photosynthetic apparatus for the longest documented period of time on Earth. Unicellular green algae of the order Chlorococcales and filamentous cyanobacteria of the orders Oscillatoriales and Nostocales were isolated from deep subsurface permafrost sediments. Both were discovered within Siberian permafrost from the Holocene up to the Early Pleistocene age. However, green algae were found to be predominant and also able to survive inside colder Antarctic sediments. These findings will have an important impact on astrobiology and the study of organisms that exist in extreme environments.

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