Results 41 to 50 of about 12,479 (212)
Relationships between soil physicochemical properties and nitrogen fixing, nitrifying and denitrifying under varying land-use practices in the northwest region of Argentina [PDF]
, 2018 The aim of this study was to evaluate the response pattern of diazotrophic microbes, denitrifiers and nitrifiers to different types of land use management, such as soybean monoculture (M) during 5 and 24 years (M5 and M24) and soybean-maize rotation (R ...
Huidobro, Jorgelina +5 more
core +1 more source
Hayati Journal of Biosciences, 2017 The role of ammonia-oxidizing bacteria and archaea was evaluated using amoA gene in a freshwater recirculating system. Broken earthen pot pieces (BEP) were used as filter bed material.
Cherita Devi Khangembam +2 more
doaj +1 more source
Detection and quantification of expression of amoA by competitive reverse transcription-PCR
Water Science and Technology, 2002 Ammonia oxidation by chemolithoautotrophic ammonia-oxidizing bacteria is an important step in the biological nitrogen removal process. The first conversion step, the oxidation of ammonia to hydroxylamine is catalyzed by ammonia monooxygenase (AMO). To investigate the activity of ammonia oxidation, mRNA (designated as amoA) encoding a subunit of AMO was
Y, Ebie +6 more
openaire +2 more sources
Frontiers in Microbiology, 2022 Nitrogen (N) cycling microorganisms mediate soil nitrogen transformation processes, thereby affecting agricultural production and environment quality. However, it is not fully understood how active N-cycling microbial community in soil respond to long ...
Feng Wang +8 more
doaj +1 more source
Influence of soil properties on archaeal diversity and distribution in the McMurdo Dry Valleys, Antarctica [PDF]
, 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
Diversity of Archaea and detection of crenarchaeotal amoA genes in the rivers Rhine and Têt [PDF]
Aquatic Microbial Ecology, 2009 Pelagic archaeal phylogenetic diversity and the potential for crenarchaeotal nitrification of Group 1.1a were determined in the rivers Rhine and Tet by 16S rRNA sequencing, catalyzed reported deposition-fluorescence in situ hybridization (CARD–FISH) and quantification of 16S rRNA and functional genes. Euryarchaeota were, for the first time, detected in
Herfort, Lydie +6 more
openaire +5 more sources
Ammonia oxidizers in the sea-surface microlayer of a coastal marine inlet. [PDF]
PLoS ONE, 2018 Planktonic archaea are thought to play an important role in ammonia oxidation in marine environments. Data on the distribution, abundance, and diversity of ammonia oxidizers in the coastal sea-surface microlayer (SML) are lacking, despite previous ...
Shu-Kuan Wong +4 more
doaj +1 more source
Expansion of Thaumarchaeota habitat range is correlated with horizontal transfer of ATPase operons. [PDF]
, 2019 Thaumarchaeota are responsible for a significant fraction of ammonia oxidation in the oceans and in soils that range from alkaline to acidic. However, the adaptive mechanisms underpinning their habitat expansion remain poorly understood.
Bartlett, Douglas H +24 more
core +2 more sources
Frontiers in Microbiology, 2012 Water availability is the main limiting factor in arid soils; however few studies have examined the effects of drying and rewetting on nitrifiers from these environments.
Mauricio eBustamante +5 more
doaj +1 more source
Global ecological pattern of ammonia-oxidizing archaea. [PDF]
PLoS ONE, 2013 BACKGROUND: The global distribution of ammonia-oxidizing archaea (AOA), which play a pivotal role in the nitrification process, has been confirmed through numerous ecological studies.
Huiluo Cao +2 more
doaj +1 more source