Results 21 to 30 of about 2,961 (133)

Diversity and Abundance of Ammonia-Oxidizing Bacteria and Archaea in a Freshwater Recirculating Aquaculture System

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, Jai Gopal Sharma, Rina Chakrabarti   +2 more
doaj   +1 more source

Response of the abundance of key soil microbial nitrogen-cycling genes to multi-factorial global changes. [PDF]

PLoS ONE, 2013
Multiple co-occurring environmental changes are affecting soil nitrogen cycling processes, which are mainly mediated by microbes. While it is likely that various nitrogen-cycling functional groups will respond differently to such environmental changes ...
Ximei Zhang, Wei Liu, Michael Schloter, Guangming Zhang, Quansheng Chen, Jianhui Huang, Linghao Li, James J Elser, Xingguo Han   +8 more
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

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

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

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

Effects of B418 on the yield of continuously cropped rape(Brassica chinensis L.)and on the nitrogen-cycling and carbon-fixation gene cbbL in rhizosphere soils [PDF]

Shandong kexue
To clarify how B418 alleviates the limitations imposed by continuous-cropping obstacle soils on rape production, a plot experiment was conducted to investigate the effects of exogenously applied B418 on the emergence, survival, and yield of rape, as well
WANG Yilian, HU Jindong, HUANG Dingli, XU Weisheng, YANG Hetong, LI Jishun, HE Chunyu
doaj   +1 more source

Short‐term effects of Brassicaceae crop residue on soil nitrification and nodulation in the subsequent field pea

Agrosystems, Geosciences &Environment, Volume 9, Issue 4, December 2026.
Abstract Glucosinolates (GLS) in Brassicaceae crops are known to suppress soil nitrification. Despite widespread inclusion of Brassicaceae species in pulse crop rotations, their effects on soil nitrification and root nodulation of subsequent pulse crops are poorly understood.
Piumi N. Gallage, Manjula S. Bandara, Mervin St. Luce, J. Diane Knight   +3 more
wiley   +1 more source