期刊
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
卷 69, 期 3, 页码 1680-1686出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/AEM.69.3.1680-1686.2003
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Distributions and isotopic analyses of lipids from sediment cores at a hydrothermally active site in the Guaymas Basin with a steep sedimentary temperature gradient revealed the presence of archaea that oxidize methane anaerobically. The presence of strongly C-13-depleted lipids at greater depths in the sediments suggests that microbes involved in anaerobic oxidation of methane are present and presumably active at environmental temperatures of >30degreesC, indicating that this process can occur not only at cold seeps but also at hydrothermal sites. The distribution of the membrane tetraether lipids of the methanotrophic archaea shows that these organisms have adapted their membrane composition to these high environmental temperatures.
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