Results 21 to 30 of about 5,341 (161)
Aquatic metagenomes implicate Thaumarchaeota in global cobalamin production [PDF]
The ISME Journal, 2014 Abstract Cobalamin (vitamin B12) is a complex metabolite and essential cofactor required by many branches of life, including most eukaryotic phytoplankton. Algae and other cobalamin auxotrophs rely on environmental cobalamin supplied from a relatively small set of cobalamin-producing prokaryotic taxa.
Doxey, Andrew C +4 more
openaire +2 more sources
Genomics of soil depth niche partitioning in the Thaumarchaeota family Gagatemarchaeaceae
Nature Communications, 2023 Abstract Knowledge of deeply-rooted non-ammonia oxidising Thaumarchaeota lineages from terrestrial environments is scarce, despite their abundance in acidic soils. Here, 15 new deeply-rooted thaumarchaeotal genomes were assembled from acidic topsoils (0-15 cm) and subsoils (30-60 cm), corresponding to two genera of terrestrially ...
Paul O. Sheridan +3 more
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Gene duplication drives genome expansion in Thaumarchaeota [PDF]
, 2020 Abstract Ammonia-oxidising archaea of the phylum Thaumarchaeota are keystone species in global nitrogen cycling. However, only three of the six known families of the terrestrially ubiquitous order Nitrososphaerales possess representative genomes.
Sheridan, Paul O. +4 more
openaire +1 more source
Frontiers in Microbiology, 2019 Climate change is causing arctic regions to warm disproportionally faster than those at lower latitudes, leading to alterations in carbon and nitrogen cycling, and potentially higher greenhouse gas emissions.
Ricardo J. Eloy Alves +9 more
doaj +1 more source
The Thaumarchaeota: an emerging view of their phylogeny and ecophysiology
Current Opinion in Microbiology, 2011 Thaumarchaeota range among the most abundant archaea on Earth. Initially classified as 'mesophilic Crenarchaeota', comparative genomics has recently revealed that they form a separate and deep-branching phylum within the Archaea. This novel phylum comprises in 16S rRNA gene trees not only all known archaeal ammonia oxidizers but also several clusters ...
Pester, Michael +2 more
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Global biodiversity of aquatic ammonia-oxidizing archaea is partitioned by habitat
Frontiers in Microbiology, 2012 Archaea play an important role in nitrification and are, thus, inextricably linked to the global carbon and nitrogen cycles. Since the initial discovery of an ammonia monooxygenase α-subunit (amoA) gene associated with an archaeal metagenomic fragment ...
Steven J Biller +6 more
doaj +1 more source
Novel PCR primers for the archaeal phylum Thaumarchaeota designed based on the comparative analysis of 16S rRNA gene sequences. [PDF]
PLoS ONE, 2014 Based on comparative phylogenetic analysis of 16S rRNA gene sequences deposited in an RDP database, we constructed a local database of thaumarchaeotal 16S rRNA gene sequences and developed a novel PCR primer specific for the archaeal phylum ...
Jin-Kyung Hong +2 more
doaj +1 more source
Heterotrophic Thaumarchaeota with ultrasmall genomes are widespread in the ocean [PDF]
, 2020 Abstract The Thaumarchaeota comprise a diverse archaeal phylum including numerous lineages that play key roles in global biogeochemical cycling, particularly in the ocean. To date, all genomically-characterized marine Thaumarchaeota are reported to be chemolithoautotrophic ammonia-oxidizers.
Aylward, Frank O., Santoro, Alyson E.
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Phylogenomics suggests oxygen availability as a driving force in Thaumarchaeota evolution [PDF]
The ISME Journal, 2019 Abstract Ammonia-oxidizing archaea (AOA) of the phylum Thaumarchaeota are widespread in marine and terrestrial habitats, playing a major role in the global nitrogen cycle. However, their evolutionary history remains unexplored, which limits our understanding of their adaptation mechanisms.
Minglei Ren +13 more
openaire +4 more sources
Frontiers in Microbiology, 2014 Previous studies had suggested the presence of ammonium oxidizing Thaumarchaeota as well as nitrite oxidizing Bacteria in the subsurface spring called Franz Josef Quelle (FJQ), a slightly radioactive thermal mineral spring with a temperature of 43.6 ...
Friedrich Wolfgang Gerbl +4 more
doaj +1 more source