Results 61 to 70 of about 7,635 (199)

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

, 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, Blazewicz, SJ, Dijkstra, P, Hart, SC, Hungate, BA, Schwartz, E   +5 more
core   +1 more source

Abundance and Community Composition of Ammonia-Oxidizers in Paddy Soil at Different Nitrogen Fertilizer Rates

Journal of Integrative Agriculture, 2014
Ammonia oxidation, the first and rate-limiting step of nitrification, is carried out by both ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA).
Ya-na SONG, Zhi-min LIN
doaj   +1 more source

Effects of mowing dominant grasses on root exudation and soil nitrogen cycling in a natural sod culture apple orchard

Plant, Soil and Environment, 2021
We evaluated the effects of mowing dominant grasses on root exudation and soil nitrogen (N) cycling by assessing metabolomics analysis of root exudates, microbial metabolism, the abundance of N-cycling-related prokaryotes, and different forms of N ...
Enda Zhou, Mingchuan Gou, Bo Yu, Chao Sun, Jiali He, Sijun Qin, Deguo Lyu   +6 more
doaj   +1 more source

amoA Gene Abundances and Nitrification Potential Rates Suggest that Benthic Ammonia-Oxidizing Bacteria and Not Archaea Dominate N Cycling in the Colne Estuary, United Kingdom [PDF]

, 2015
Nitrification, mediated by ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA), is important in global nitrogen cycling. In estuaries where gradients of salinity and ammonia concentrations occur, there may be differential selections for ...
Alex J. Dumbrell, Boyd A. McKew, Corinne Whitby, David B. Nedwell, Development Core Team R, Emma L. Thorpe, G. Voordouw, Jessica Beddow, Jialin Li   +8 more
core   +1 more source

Spatial distribution and abundances of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) in mangrove sediments [PDF]

, 2010
We investigated the diversity, spatial distribution, and abundances of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) in sediment samples of different depths collected from a transect with different distances to mangrove forest in ...
Meng Li, Huiluo Cao, Yiguo Hong, Ji-Dong Gu   +3 more
core   +2 more sources

Variation in soil nitrous oxide emission with nitrogen application rates under reclaimed water irrigation

Frontiers in Environmental Science
Nitrous oxide (N2O) is a potent greenhouse gas primarily emitted from agricultural soils through microbial nitrogen transformation processes. Different nitrogen application rates and fertilizer types influence soil nitrogen transformation pathways ...
Yanbing Chi, Chenchen Wei, Peiling Yang
doaj   +1 more source

Phylogenetic congruence and ecological coherence in terrestrial Thaumarchaeota [PDF]

, 2015
This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the ...
A Daebeler, A Gobet, A Lopez-Lopez, A Sayavedra-Soto, A Spang, AF Koeppel, AJ Drummond, B Stempfhuber, B Stres, C Brochier-Armanet, C Gubry-Rangin, C Gubry-Rangin, Christopher Quince, Cécile Gubry-Rangin, DA Stahl, DL Sun, DP Martin, E Paradis, E Pereira, Eduard Vico Oton, EF DeLong, Graeme W Nicol, GW Nicol, GW Nicol, H Cao, H Urakawa, I Richter, J Mertens, J Oksanen, JA Balbuena, James I Prosser, JH Gunderson, JI Prosser, JW Leigh, K Hommola, K Zhalnina, L Lu, L Philippot, LE Lehtovirta, LE Lehtovirta-Morley, LJ Revell, M Groussin, M Könneke, M Pester, M Pester, M Tourna, M Tourna, N Stopnisek, NJ Matzke, P Legendre, P Offre, PJ McMurdie, R Angel, R Grosskopf, RC Edgar, RI Griffiths, RJ Alves, RJ Case, S Leininger, SA Placella, SG Acinas, SJ Biller, SN Wood, ST Bates, T Coenye, T Ochsenreiter, U Szukics   +66 more
core   +3 more sources

Polygenic analysis of ammonia-oxidizing bacteria using 16S rDNA, amoA, and amoB genes.

International microbiology : the official journal of the Spanish Society for Microbiology, 2005
Encontrar un marcador molecular único capaz de proporcionar rápidamente información filogenética rigurosa y útil facilitaría evaluación de la diversidad de las bacterias oxidadoras de amoníaco en muestras ambientales. En esta clase de estudios no se puede utilizar simultáneamente más que uno de los marcadores disponibles.
Calvó, Laia, Cortey, Martí, García-Marín, Jose-Luís, Garcia-Gil, L. Jesús   +3 more
openaire   +5 more sources

Comparative Microbial Nitrogen Functional Gene Abundances in the Topsoil vs. Subsoil of Three Grassland Habitats in Northern China

Frontiers in Plant Science, 2022
The microbial groups of nitrogen fixers, ammonia oxidizers, and denitrifiers play vital roles in driving the nitrogen cycle in grassland ecosystems. However, the understanding of the abundance and distribution of these functional microorganisms as well ...
Yuqing Liu, Yuqing Liu, Yuqing Liu, Qiaodong Chi, Hui Cheng, Huanxin Ding, Teng Wen, Jun Zhao, Jun Zhao, Jun Zhao, Xiaojuan Feng, Jinbo Zhang, Jinbo Zhang, Jinbo Zhang, Zucong Cai, Zucong Cai, Zucong Cai, Guohua Liu   +17 more
doaj   +1 more source

Impact of Irrigation Strategies on Tomato Root Distribution and Rhizosphere Processes in an Organic System. [PDF]

, 2020
Root exploitation of soil heterogeneity and microbially mediated rhizosphere nutrient transformations play critical roles in plant resource uptake. However, how these processes change under water-saving irrigation technologies remains unclear, especially
Gaudin, Amélie CM, Kent, Angela, LaHue, Deirdre G, Lazicki, Patricia, Li, Meng, Machmuller, Megan B, Schmidt, Jennifer E, Scow, Kate M   +7 more
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