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Genetic adaptations key to microbe's survival in challenging environment
Date:2/10/2009

further adaptations to the vent environment, including genes necessary for growth and sensing environmental conditions, and a new route for nitrate assimilation related to how other bacteria use ammonia as an energy source. Photosynthesis cannot occur in the hydrothermal vents' dark environment, where hot, toxic fluids oozing from below the seafloor combine with cold seawater at very high pressures.

These results help to explain how microbes survive near the vents, where conditions are thought to resemble those found on early Earth. Nautilia profundicola contains all the genes necessary for life in conditions widely believed to mimic those in our planet's early biosphere and could aid in understanding of how life evolved.

"It will be an important model system," Campbell said, "for understanding early microbial life on Earth."


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Contact: Elizabeth Boyle
boylee@udel.edu
302-831-0465
University of Delaware
Source:Eurekalert  

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