Results 11 to 20 of about 52,993 (223)
Predominant archaea in marine sediments degrade detrital proteins
Nature, 2013 Half of the microbial cells in the Earth's oceans are found in sediments. Many of these cells are members of the Archaea, single-celled prokaryotes in a domain of life separate from Bacteria and Eukaryota. However, most of these archaea lack cultured representatives, leaving their physiologies and placement on the tree of life uncertain.
Karen G Lloyd +2 more
exaly +5 more sources
Archaeal lipids trace ecology and evolution of marine ammonia-oxidizing archaea
Proceedings of the National Academy of Sciences of the United States of America, 2022 Archaeal membrane lipids are widely used for paleotemperature reconstructions, yet these molecular fossils also bear rich information about ecology and evolution of marine ammonia-oxidizing archaea (AOA). Here we identified thermal and nonthermal behaviors of archaeal glycerol dialkyl glycerol tetraethers (GDGTs) by comparing the GDGT-based temperature
Ronnakrit Rattanasriampaipong +2 more
exaly +3 more sources
Metabolic activities of marine ammonia‐oxidizing archaea orchestrated by quorum sensing [PDF]
mLife, 2023 Ammonia‐oxidizing archaea (AOA) play crucial roles in marine carbon and nitrogen cycles by fixing inorganic carbon and performing the initial step of nitrification. Evaluation of carbon and nitrogen metabolism popularly relies on functional genes such as
Olivier Pereira +8 more
doaj +4 more sources
Membraneless channels sieve cations in ammonia-oxidizing marine archaea. [PDF]
NatureAbstractNitrosopumilus maritimus is an ammonia-oxidizing archaeon that is crucial to the global nitrogen cycle1,2. A critical step for nitrogen oxidation is the entrapment of ammonium ions from a dilute marine environment at the cell surface and their subsequent channelling to the cell membrane of N. maritimus.
von Kügelgen A +9 more
europepmc +5 more sources
Contributions of single-cell genomics to our understanding of planktonic marine archaea. [PDF]
Philos Trans R Soc Lond B Biol Sci, 2019 Single-cell genomics has transformed many fields of biology, marine microbiology included. Here, we consider the impact of single-cell genomics on a specific group of marine microbes—the planktonic marine archaea. Despite single-cell enabled discoveries of novel metabolic function in the marine thaumarchaea, population-level investigations are hindered
Santoro AE, Kellom M, Laperriere SM.
europepmc +7 more sources
Anaerobic Degradation of Alkanes by Marine Archaea
Annual Review of Microbiology, 2022 Alkanes are saturated apolar hydrocarbons that range from their simplest form, methane, to high-molecular-weight compounds. Although alkanes were once considered biologically recalcitrant under anaerobic conditions, microbiological investigations have now identified several microbial taxa that can anaerobically degrade alkanes.
Wegener, Gunter +3 more
openaire +6 more sources
Marine Planktonic Archaea Take Up Amino Acids [PDF]
Applied and Environmental Microbiology, 2000 ABSTRACT Archaea are traditionally thought of as “extremophiles,” but recent studies have shown that marine planktonic Archaea make up a surprisingly large percentage of ocean midwater microbial communities, up to 60% of the total prokaryotes.
Ouverney, Cleber C., Fuhrman, Jed A.
openaire +3 more sources
Catabolic protein degradation in marine sediments confined to distinct archaea [PDF]
The ISME Journal, 2022 Abstract Metagenomic analysis has facilitated prediction of a variety of carbon utilization potentials by uncultivated archaea including degradation of protein, which is a wide-spread carbon polymer in marine sediments. However, the activity of detrital catabolic protein degradation is mostly unknown for the vast majority of archaea ...
Xiuran Yin +12 more
openaire +2 more sources
Using metagenomics tool to evaluate the enrichment efficiency of methanogens in marine sediment in Truong Sa archipelage, Khanh Hoa province, Vietnam [PDF]
E3S Web of Conferences, 2023 Methanogens (archaea bacteria that produce methan) play an important role in the anaerobic digestion of organic waste, however, in marine environment, the low density of methanogens makes anaerobic digestion very slow.
Nguyen Thu Hoai +5 more
doaj +1 more source
AMB Express, 2020 Microbial community structure and metabolic activities have profound impacts on biogeochemical processes in marine sediments. Functional bacteria such as nitrate- and sulfate-reducing bacteria respond to redox gradients by coupling specific reactions ...
Wenxiu Wang +6 more
doaj +1 more source