Effects of dissolved sulfide, pH, and temperature on growth and survival of marine hyperthermophilic archaea
Lloyd, Karen G.
Edgcomb, Virginia P.
Molyneaux, Stephen J.
Wirsen, Carl O.
Atkins, Michael S.
MetadataShow full item record
The ability of metabolically diverse hyperthermophilic archaea to withstand high temperatures, low pHs, high sulfide concentrations, and the absence of carbon and energy sources was investigated. Close relatives of our study organisms, Methanocaldococcus jannaschii, Archaeoglobus profundus, Thermococcus fumicolans, and Pyrococcus sp. strain GB-D, are commonly found in hydrothermal vent chimney walls and hot sediments and possibly deeper in the subsurface, where highly dynamic hydrothermal flow patterns and steep chemical and temperature gradients provide an ever-changing mosaic of microhabitats. These organisms (with the possible exception of Pyrococcus strain GB-D) tolerated greater extremes of low pH, high sulfide concentration, and high temperature when actively growing and metabolizing than when starved of carbon sources and electron donors/acceptors. Therefore these organisms must be actively metabolizing in the hydrothermal vent chimneys, sediments, and subsurface in order to withstand at least 24 h of exposure to extremes of pH, sulfide, and temperature that occur in these environments.
Author Posting. © American Society for Microbiology, 2005. This article is posted here by permission of American Society for Microbiology for personal use, not for redistribution. The definitive version was published in Applied and Environmental Microbiology 71 (2005): 6383-6387, doi:10.1128/AEM.71.10.6383-6387.2005.
Showing items related by title, author, creator and subject.
Biddle, Jennifer F.; Lipp, Julius S.; Lever, Mark A.; Lloyd, Karen G.; Sorensen, Ketil B.; Anderson, Rika E.; Fredricks, Helen F.; Elvert, Marcus; Kelly, Timothy J.; Schrag, Daniel P.; Sogin, Mitchell L.; Brenchley, Jean E.; Teske, Andreas; House, Christopher H.; Hinrichs, Kai-Uwe (National Academy of Sciences, 2006-02-27)Studies of deeply buried, sedimentary microbial communities and associated biogeochemical processes during Ocean Drilling Program Leg 201 showed elevated prokaryotic cell numbers in sediment layers where methane is consumed ...
Comparative analysis of methane-oxidizing archaea and sulfate-reducing bacteria in anoxic marine sediments Orphan, V. J.; Hinrichs, Kai-Uwe; Ussler, W.; Paull, Charles K.; Taylor, L. T.; Sylva, Sean P.; Hayes, John M.; DeLong, Edward F. (American Society for Microbiology, 2001-04)The oxidation of methane in anoxic marine sediments is thought to be mediated by a consortium of methane-consuming archaea and sulfate-reducing bacteria. In this study, we compared results of rRNA gene (rDNA) surveys and ...
Archaea and bacteria with surprising microdiversity show shifts in dominance over 1,000-year time scales in hydrothermal chimneys Brazelton, William J.; Ludwig, Kristin A.; Sogin, Mitchell L.; Andreishcheva, Ekaterina N.; Kelley, Deborah S.; Shen, Chuan-Chou; Edwards, R. Lawrence; Baross, John A. (2009-12-06)The Lost City Hydrothermal Field, an ultramafic-hosted system located 15 km west of the Mid-Atlantic Ridge, has experienced at least 30,000 years of hydrothermal activity. Previous studies have shown that its carbonate ...