Results 51 to 60 of about 7,635 (199)

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

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, Eloe-Fadrosh, Emiley A, Hall, Richard, Han, Ping, Heiner, Cheryl, Herbold, Craig W, Huang, Li, Ingalls, Anitra E, Ji, Junbin, Jia, Zhongjun, Jung, Man-Young, Li, Meng, Liu, Linmeng, Liu, Yang, Lu, Lu, Martens-Habbena, Willm, Qin, Wei, Ren, Yi, Rhee, Sung-Keun, Stahl, David A, Wagner, Michael, Wang, Baozhan, Yan, Xin, Zheng, Yue, Zhou, Xue   +24 more
core   +2 more sources

Pesticide Side Effects in an Agricultural Soil Ecosystem as Measured by amoA Expression Quantification and Bacterial Diversity Changes.

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, Mathis Hjort Hjelmsø, Morten Schostag Nielsen, Anne Dorthe Jacobsen, Regin Rønn, Flemming Ekelund, Paul Henning Krogh, Bjarne Westergaard Strobel, Carsten Suhr Jacobsen   +8 more
doaj   +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

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., Cary, S. Craig, Herbold, Craig W., Lee, Charles Kai-Wu, McDonald, Ian R., Richter, Ingrid   +5 more
core   +2 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
ABSTRACT 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 important for controlling nitrogen removal. In this study, the
T, Hoshino, N, Noda, S, Tsuneda, A, Hirata, Y, Inamori   +4 more
openaire   +2 more sources

Nitrogen and Phosphorus Fertilization Reshapes the Abundance and Structure of Ammonia Oxidizers on a Leymus chinensis Steppe in Northern China

Agronomy, 2022
Although nitrogen (N) and phosphorus (P) fertilization are important for maintaining the health and productivity of Leymus chinensis steppe, their impact on the abundance and community structure of ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing ...
Yan Qin, Wenhui Liu, Feng He, Xianglin Li   +3 more
doaj   +1 more source

Archaea produce lower yields of N2O than bacteria during aerobic ammonia oxidation in soil [PDF]

, 2016
Acknowledgments The authors are members of the Nitrous Oxide Research Alliance (NORA), a Marie Skłodowska-Curie ITN and research project under the EU's seventh framework program (FP7). GN is funded by the AXA Research Fund.
Hink, Linda, Nicol, Graeme W, Prosser, James I   +2 more
core   +3 more sources

Analysis and Quantification of Ammonia-Oxidizing Bacteria Community with amoA Gene in Sewage Treatment Plants

Journal of Microbiology and Biotechnology, 2012
The analysis and quantification of ammonia-oxidizing bacteria (AOB) is crucial, as they initiate the biological removal of ammonia-nitrogen from sewage. Previous methods for analyzing the microbial community structure, which involve the plating of samples or culture media over agar plates, have been inadequate because many microorganisms found in a ...
Sun Hwa, Hong, Hyun Duck, Jeong, Bongjin, Jung, Eun Young, Lee   +3 more
openaire   +2 more sources