Archaea predominate among ammonia-oxidizing prokaryotes in soils

@article{Leininger2006ArchaeaPA,
  title={Archaea predominate among ammonia-oxidizing prokaryotes in soils},
  author={Sven Leininger and Tim Urich and Michael Schloter and Lorenz Schwark and Jie Qi and Graeme W. Nicol and James I. Prosser and Stephan C. Schuster and Christa Schleper},
  journal={Nature},
  year={2006},
  volume={442},
  pages={806-809}
}
Ammonia oxidation is the first step in nitrification, a key process in the global nitrogen cycle that results in the formation of nitrate through microbial activity. The increase in nitrate availability in soils is important for plant nutrition, but it also has considerable impact on groundwater pollution owing to leaching. Here we show that archaeal ammonia oxidizers are more abundant in soils than their well-known bacterial counterparts. We investigated the abundance of the gene encoding a… 
Autotrophic ammonia oxidation by soil thaumarchaea
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TLDR
Community structure changes were similar during incubation at different temperatures and much of the activity was due to a group of non-thermophile crenarchaea associated with subsurface and marine environments, rather than soil.
Drivers of archaeal ammonia-oxidizing communities in soil
TLDR
Soil ammonia-oxidizing archaea (AOA) are highly abundant and play an important role in the nitrogen cycle, but soils can vary greatly in the relative abundance of AOA.
Bacteria rather than Archaea dominate microbial ammonia oxidation in an agricultural soil.
TLDR
It is shown that Bacteria rather than Archaea functionally dominate ammonia oxidation in an agricultural soil, despite the fact that archaeal versus bacterial amoA genes are numerically more dominant.
Distribution and Activity of Ammonia-Oxidizing Archaea in Natural Environments
TLDR
The complete genome sequence of C. symbiosum was determined from a metagenomic library providing further insights into the potential physiological properties of uncultured ammonia-oxidizing archaea (AOA), and there is now unambiguous evidence for the occurrence of AOA in environments of elevated temperature.
Ammonia oxidation coupled to CO2 fixation by archaea and bacteria in an agricultural soil
TLDR
The results demonstrate a diverse and dynamic contribution of ammonia-oxidizing archaea in soil to nitrification and CO2 assimilation and that their importance to the overall archaeal community might be larger than previously thought.
Nitrification driven by bacteria and not archaea in nitrogen-rich grassland soils
TLDR
It is suggested that nitrification is driven by bacteria rather than archaea in these nitrogen-rich grassland soils in New Zealand, with a significant relationship between the abundance of ammonia-oxidizing bacteria and the rate of nitrification.
Cultivation of a highly enriched ammonia-oxidizing archaeon of thaumarchaeotal group I.1b from an agricultural soil.
Nitrification of excess ammonia in soil causes eutrophication of water resources and emission of atmospheric N(2) O gas. The first step of nitrification, ammonia oxidation, is mediated by Archaea as
Ammonia-Oxidizing Archaea Dominate Ammonia-Oxidizing Communities within Alkaline Cave Sediments
TLDR
The results showed that AOA outnumber ammonia-oxidizing bacteria (AOB) by up to four orders of magnitude in cave sediments, and data suggest that despite the alkaline conditions within the cave, the low NH3 concentrations measured continue to favor growth of AOA over AOB populations.
Quantitative analyses of ammonia-oxidizing Archaea and bacteria in the sediments of four nitrogen-rich wetlands in China
TLDR
The results indicated that AOA distributed widely in wetland sediments, and the phylogenetic tree revealed that archaeal amoA functional gene sequences from wetlands sediments cluster as two major evolutionary branches: soil/sediment and sediment/water.
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