Journal
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
Volume 68, Issue 3, Pages 1458-1463Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/AEM.68.3.1458-1463.2002
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The effect of decompression on the structure of Methanococcus jannaschii, an extremely thermophilic deep-sea methanogen, was studied in a novel high-pressure, high-temperature bioreactor. The cell envelope of M. jannaschii appeared to rupture upon rapid decompression (ca. 1 s) from 260 atm of hyperbaric pressure. When decompression from 260 atm was performed over 5 min, the proportion of ruptured cells decreased significantly. In contrast to the effect produced by decompression from hyperbaric pressure, decompression from a hydrostatic pressure of 260 atm did not induce cell lysis.
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