Results 41 to 50 of about 2,518,592 (205)

Responses of Alpine Soil Nitrification and Denitrification Rates to Nitrogen Addition Gradient—The Role of Functional Genes

Agriculture, 2023
Increases in nitrogen (N) deposition affect the nitrification and denitrification processes that are regulated by microorganisms. With the aim of understanding what happened to the soil nitrification and denitrification rates under the N application ...
Jiaqi Zhang, Yinghui Liu, Jingyi Dong
doaj   +1 more source

NITRIFICATION AND NITRIFYING BACTERIA IN A COASTAL MICROBIAL MAT

Frontiers in Microbiology, 2015
The first step of nitrification, the oxidation of ammonia to nitrite, can be performed by ammonia-oxidizing archaea (AOA) or ammonium-oxidizing bacteria (AOB).
Haoxin eFan, Henk eBolhuis, Lucas eStal, Lucas eStal   +3 more
doaj   +1 more source

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, Steven J Biller, Annika C Mosier, Annika C Mosier, George F Wells, George F Wells, Christopher A Francis   +6 more
doaj   +1 more source

Archaea predominate in the ammonia oxidation process in the sediments of the Yap and Mariana Trenches

Frontiers in Microbiology, 2023
Ammonia-oxidizing archaea (AOA) and bacteria (AOB) play an important role in oxidizing ammonia to nitrite in different marine environments; however, their relative contribution to ammonia oxidation in the deep-sea sediments is still largely unknown ...
Hao Liu, Hongmei Jing, Hongmei Jing, Hongmei Jing, Fangzhou Wang, Fangzhou Wang   +5 more
doaj   +1 more source

Association of the AFF3 gene and IL2/IL21 gene region with juvenile idiopathic arthritis [PDF]

, 2010
Recent genetic studies have led to identification of numerous loci that are associated with susceptibility to autoimmune diseases. The strategy of using information from these studies has facilitated the identification of novel juvenile idiopathic ...
S Eyre, J Worthington, X Ke, P Martin, W Thomson, A Hinks, E Flynn, J Packham, A Barton, Martin, P., Barton, A., Gardner-Medwin, J. [CAPS and BSPAR study groups], UKRAG Consortium, Worthington, J., Thomson, W., Flynn, E., Packham, J., Hinks, A., British Society of Paediatric and Adolescent Rheumatology (BSPAR) Study Group, Eyre, S., Ke, X., Childhood Arthritis Prospective Study (CAPS)   +21 more
core   +1 more source

The application of high-throughput sequencing technology to analysis of amoA phylogeny and environmental niche specialisation of terrestrial bacterial ammonia-oxidisers

Environmental Microbiome, 2019
Background Characterisation of microbial communities increasingly involves use of high throughput sequencing methods (e.g. MiSeq Illumina) that amplify relatively short sequences of 16S rRNA or functional genes, the latter including ammonia monooxygenase
Axel Aigle, James I. Prosser, Cécile Gubry-Rangin   +2 more
doaj   +1 more source

Transcription of theamoC, amoAandamoBgenes inNitrosomonas europaeaandNitrosospirasp. NpAV [PDF]

FEMS Microbiology Letters, 1998
Nitrifying bacteria such as Nitrosomonas europaea and Nitrosospira sp. NpAV use ammonia monooxygenase (AMO) for oxidation of their primary growth substrate, ammonia. Two polypeptides of AMO are coded for by contiguous genes, amoA and amoB, which are preceded by a third gene, amoC.
Sayavedra-Soto, L.A, Hommes, N.G, Alzerreca, J.J, Arp, D.J, Norton, J.M, Klotz, M.G   +5 more
openaire   +3 more sources

Exploring the potential for oxygen production by cable bacteria in the deep sediment through the investigation of amoA gene expression

, 2023
noneThis thesis aims to investigate the potential for oxygen production by cable bacteria in the deep sediment. To accomplish this, an indirect approach was used, specifically studying the expression of the amoA gene, belonging to the Nitrosomonas genus,
RRUCI, ERINDA
core  

The ammonia monooxygenase structural gene amoA as a functional marker: Molecular fine-scale analysis of natural ammonia-oxidizing populations

, 1997
The naturally occurring genetic heterogeneity of autotrophic ammonia-oxidizing populations belonging to the beta subclass of the Proteobacteria was studied by using a newly developed PCR-based assay targeting a partial stretch of the gene which encodes ...
Witzel, K., Rotthauwe, J., Liesack, W. ; https://orcid.org/   +2 more
core   +2 more sources

Organ Size and Metabolic Rate Co‐Vary with Dimensions of the Obstetric Pelvis: The Metabolic Coordination of Childbirth Hypothesis

American Journal of Biological Anthropology, Volume 191, Issue 1, September 2026.
Among South Asian women, those with larger organ mass and energy expenditure, indicating greater capacity to promote fetal growth, had larger pelvic dimensions, partly explained by linear growth patterns. However, body fat correlated with energy expenditure but not pelvic dimensions, helping explain why high adiposity increases risk of obstructed ...
Jonathan C. K. Wells, Meghan Shirley Bezerra, Rasmus Wibaek, Owen J. Arthurs, Kiran K. Seunarine, Simon Eaton, Chris A. Clark   +6 more
wiley   +1 more source