DCO Project Summary

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Project Title
Isolation and Characterization of Novel Piezophiles from Deep Subsurface Environments
Start DateEnd Date
2012-01-01 2014-06-30
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This aspect of the RHC grant sought to enrich for and characterize novel piezophilic cultivars from deep, rock-hosted microbial habitats with a central focus upon the metabolism of carbon compounds at high hydrostatic pressure. Research efforts used samples from the Mid Cayman Rise and Deep Fracture projects in particular as a source of unique samples to enrich for new microorganisms, which may serve as type strains for future deep biosphere studies.

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Reporting Year 2014 Click to expand

  • RY2014-1 - submitted on Aug 31, 2014

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    Samples from the Mid-Cayman Rise project, headed by Co-PI Huber were instrumental to obtaining new piezophilic, hyperthermophilic cultivars which have been the focus of physiological studies. One of the most exciting results is the unprecedented broad pressure range for growth of the cultivars (from >100 MPa to atmospheric pressure), which may have implication for microbial dispersal and evolution in the subsurface environment. Similar studies to obtain novel piezophiles have been undertaken with samples from deep fracture environments in South Africa and Finland.  Additionally, deep life supported post-doc Priya Narasingarao participated in a Japanese-led expedition to the Mid Cayman Rise in 2013 to obtain fresh samples, and to conduct stable isotope tracer studies at high hydrostatic pressure, which complement the work of Huber, et al.

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http://info.deepcarbon.net/individual/n9479 11121/8153-3361-8778-4979-CC
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