Properties of Hyper-Barophilic Bacteria Isolated from the Mariana Trench at a Depth of 11,000m
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Two kinds of obligate barophilic bacteria were isolated from the world's deepest sediment samples, obtained by a new unmanned submersible "KAIKO" in the Mariana Trench at a depth of 11, 000m. The first strain (DB21MT-2) appears to be closely related to the branch of the genus Shewanella defined as the "barophiles branch". The second strain (DB21MT-5) was closely related to the genus Moritella The optimal growth pressure conditions of isolates were 70 MPa for strain DB21MT-2 and 80 MPa for strain DB21MT-5, no growth was detected up to 50 MPa in either strain. Thus we call these barophilic strains "hyper-barophilic bacteria". This is the first evidence of the existence of an obligate barophilic Moritella sp. from the deep-sea environment.
- The Review of High Pressure Science and Technology
The Review of High Pressure Science and Technology 7, 1274-1276, 1998
The Japan Society of High Pressure Science and Technology