Results 41 to 50 of about 15,618 (215)

Ammonia‐oxidizing archaea: important players in paddy rhizosphere soil? [PDF]

open access: yesEnvironmental Microbiology, 2008
Summary The diversity (richness and community composition) of ammonia‐oxidizing archaea (AOA) and bacteria (AOB) in paddy soil with different nitrogen (N) fertilizer amendments for 5 weeks were investigated using quantitative real‐time polymerase chain reaction, denaturing gradient gel electrophoresis (DGGE) jand ...
Xue-Ping, Chen   +4 more
openaire   +2 more sources

Influence of soil properties on archaeal diversity and distribution in the McMurdo Dry Valleys, Antarctica [PDF]

open access: yes, 2014
Archaea are the least understood members of the microbial community in Antarctic mineral soils. Although their occurrence in Antarctic coastal soils has been previously documented, little is known about their distribution in soils across the McMurdo Dry ...
Barrett, John E.   +5 more
core   +2 more sources

Archaeal dominated ammonia-oxidizing communities in Icelandic grassland soils are moderately affected by long-term N fertilization and geothermal heating

open access: yesFrontiers in Microbiology, 2012
The contribution of ammonia-oxidizing bacteria and archaea (AOB and AOA, respectively) to the net oxidation of ammonia varies greatly between terrestrial environments.
Anne eDaebeler   +8 more
doaj   +1 more source

Production and Excretion of Polyamines To Tolerate High Ammonia, a Case Study on Soil Ammonia-Oxidizing Archaeon “Candidatus Nitrosocosmicus agrestis”

open access: yesmSystems, 2021
Ammonia tolerance is a universal characteristic among the ammonia-oxidizing bacteria (AOB); in contrast, the known species of ammonia-oxidizing archaea (AOA) have been regarded as ammonia sensitive, until the identification of the genus “Candidatus ...
Liangting Liu   +4 more
doaj   +1 more source

Genomic Inference of the Metabolism and Evolution of the Archaeal Phylum Aigarchaeota [PDF]

open access: yes, 2018
Microbes of the phylum Aigarchaeota are widely distributed in geothermal environments, but their physiological and ecological roles are poorly understood.
Castelle, Cindy J.   +14 more
core   +3 more sources

A positive relationship between the abundance of ammonia oxidizing archaea and natural abundance δ15N of ecosystems [PDF]

open access: yes, 2013
We present a significant relationship between the natural abundance isotopic composition of ecosystem pools and the abundance of a microbial gene. Natural abundance 15N of soils and soil DNA were analysed and compared with archaeal ammonia oxidizer ...
Adair, K   +5 more
core   +1 more source

Ammonia-oxidizing archaea have more important role than ammonia-oxidizing bacteria in ammonia oxidation of strongly acidic soils [PDF]

open access: yesThe ISME Journal, 2011
Abstract Increasing evidence demonstrated the involvement of ammonia-oxidizing archaea (AOA) in the global nitrogen cycle, but the relative contributions of AOA and ammonia-oxidizing bacteria (AOB) to ammonia oxidation are still in debate. Previous studies suggest that AOA would be more adapted to ammonia-limited oligotrophic conditions,
Li-Mei, Zhang   +3 more
openaire   +2 more sources

Ammonia-oxidizing bacteria and archaea within biofilters of a commercial recirculating marine aquaculture system

open access: yesAMB Express, 2018
While biofilters are widely used to metabolize ammonia and other wastes in marine recirculating aquaculture systems, the ammonia-oxidizing bacterial and archaeal communities have not been characterized across a diversity of production systems.
Zhitao Huang   +8 more
doaj   +1 more source

Growing media constituents determine the microbial nitrogen conversions in organic growing media for horticulture [PDF]

open access: yes, 2016
Vegetables and fruits are an important part of a healthy food diet, however, the eco-sustainability of the production of these can still be significantly improved.
Boon, Nico   +6 more
core   +1 more source

Competition between Ammonia-Oxidizing Archaea and Bacteria from Freshwater Environments. [PDF]

open access: yesAppl Environ Microbiol, 2021
Nitrification is an important process in the global nitrogen cycle. The first step, ammonia oxidation to nitrite, can be carried out by ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB).
French E, Kozlowski JA, Bollmann A.
europepmc   +3 more sources

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