Temporal and spatial coexistence of archaeal and bacterial amoA genes and gene transcripts in Lake Lucerne [PDF]
Archaea, 2013 Despite their crucial role in the nitrogen cycle, freshwater ecosystems are relatively rarely studied for active ammonia oxidizers (AO). This study of Lake Lucerne determined the abundance of both amoA genes and gene transcripts of ammonia-oxidizing ...
Vissers, E.W. +14 more
core +17 more sources
High-throughput analysis of ammonia oxidiser community composition via a novel, amoA-based functional gene array. [PDF]
PLoS ONE, 2012 Advances in microbial ecology research are more often than not limited by the capabilities of available methodologies. Aerobic autotrophic nitrification is one of the most important and well studied microbiological processes in terrestrial and aquatic ...
Guy C J Abell +6 more
doaj +5 more sources
Archaeal amoA and ureC genes and their transcriptional activity in the Arctic Ocean [PDF]
Scientific Reports, 2014 International audienceThaumarchaeota and the gene encoding for a subunit of ammonia monooxygenase (amoA) are ubiquitous in Polar Seas, and some Thaumarchaeota also have a gene coding for ureC, diagnostic for urease. Using quantitative PCR we investigated
Tremblay, Jean-ERic +4 more
core +3 more sources
The ecological dichotomy of ammonia-oxidizing archaea and bacteria in the hyper-arid soils of the Antarctic Dry Valleys [PDF]
Frontiers in Microbiology, 2014 The McMurdo Dry Valleys of Antarctica are considered to be one of the most physically and chemically extreme terrestrial environments on the Earth. However, little is known about the organisms involved in nitrogen transformations in these environments ...
Catarina Maria Magalhães +5 more
doaj +2 more sources
Abundances of crenarchaeal amoA genes and transcripts in the Pacific Ocean [PDF]
Environmental Microbiology, 2009 Planktonic Crenarchaea are thought to play a key role in chemolithotrophic ammonia oxidation, a critical step of the marine nitrogen (N) cycle. In this study, we examined the spatial distributions of ammonia-oxidizing Crenarchaea across a large (∼5200 km)
Karl, David M. +3 more
core +3 more sources
Direct Detection by In Situ PCR of the amoA Gene in Biofilm Resulting from a Nitrogen Removal Process [PDF]
Applied and Environmental Microbiology, 2001 Ammonia oxidation is a rate-limiting step in the biological removal of nitrogen from wastewater. Analysis of microbial communities possessing the amoA gene, which is a small subunit of the gene encoding ammonia monooxygenase, is ...
Tatsuhiko Hoshino +4 more
core +3 more sources
Nanosilver inhibits nitrification and reduces ammonia‐oxidising bacterial but not archaeal amoA gene abundance in estuarine sediments [PDF]
Environmental Microbiology, 2017 Summary Silver nanoparticles (AgNPs) enter estuaries via wastewater treatment effluents, where they can inhibit microorganisms, because of their antimicrobial properties. Ammonia‐oxidising bacteria (AOB) and archaea
Brett P. Lyons +15 more
core +5 more sources
Pesticide Side Effects in an Agricultural Soil Ecosystem as Measured by amoA Expression Quantification and Bacterial Diversity Changes. [PDF]
PLoS ONE, 2015 Background and methodsAssessing the effects of pesticide hazards on microbiological processes in the soil is currently based on analyses that provide limited insight into the ongoing processes. This study proposes a more comprehensive approach.
Louise Feld +8 more
doaj +2 more sources
Retraction Note to: Archaeal amoA Genes Outnumber Bacterial amoA Genes in Municipal Wastewater Treatment Plants in Bangkok [PDF]
Microbial Ecology, 2016 The contribution of ammonia-oxidizing archaea (AOA) to nitrogen removal in wastewater treatment plants (WWTPs) remains unknown. This study investigated the abundance of archaeal (AOA) and bacterial (ammonia-oxidizing bacteria (AOB)) amoA genes in eight of Bangkok’s municipal WWTPs.
Pantip, Kayee +3 more
openaire +3 more sources
Differential regulation of amoA and amoB gene copies in Nitrosomonas europaea [PDF]
FEMS Microbiology Letters, 2000 Nitrosomonas europaea contains two nearly identical copies of the operon, amoCAB, which encodes the ammonia monooxygenase (AMO) enzyme. Cells of N. europaea containing single mutations in either amoA or amoB gene copies were incubated in ammonium both prior to and after exposure to acetylene or light.
L Y, Stein +3 more
openaire +3 more sources