Results 81 to 90 of about 8,377 (202)

The response of nitrifier, N-fixer and denitrifier gene copy numbers to the nitrification inhibitor 3,4-dimethylpyrazole phosphate

Plant, Soil and Environment, 2013
A laboratory incubation experiment was conducted to examine the effects of 3,4-dimethylpyrazole phosphate (DMPP) on the transformation of urea-N and associated microbial communities in a low-fertility brown soil. The soil was supplied with urea at 180 kg
X.X. Dong, L.L. Zhang, Z.J. Wu, H.W. Zhang, P. Gong   +4 more
doaj   +1 more source

Archaeal Tetraether Lipids as Tracers for Past Marine Environmental Change

Paleoceanography and Paleoclimatology, Volume 41, Issue 7, July 2026.
Abstract Archaea are single‐celled microorganisms that are abundant in marine environments and play a key role in the carbon and nitrogen cycles. Archaea can biosynthesize a wide variety of isoprenoid membrane lipids, including isoprenoid glycerol dibiphytanyl glycerol tetraethers (isoGDGTs).
Felix J. Elling, Gordon N. Inglis, Nina Davtian, Sarah J. Hurley, B. David A. Naafs, Lauren K. O'Connor, Richard D. Pancost, Francien Peterse, Ronnakrit Rattanasriampaipong, Addison Rice, Florence Schubotz, Jaap S. Sinninghe Damsté, Lars Wörmer, Alexandra Auderset, Kevin W. Becker, Melissa A. Berke, Peter K. Bijl, Cindy De Jonge, Liang Dong, Bella J. Duncan, Tom Dunkley Jones, Pierrick Fenies, Susanne Fietz, Sze Ling Ho, Arnaud Huguet, Carme Huguet, Jérôme Kaiser, Xiao‐Lei Liu, Gesine Mollenhauer, Sebastian Naeher, Ann Pearson, Kasia K. Śliwińska, Appy Sluijs, Claudia Sosa‐Montes de Oca, Qian Tian, Jessica E. Tierney, Devika Varma, Wenjie Xiao, Yi Ge Zhang, Xiaoxiao Zhao   +39 more
wiley   +1 more source

Enrichment and characteristics of ammonia-oxidizing archaea in wastewater treatment process

, 2022
High purity ammonia-oxidizing archaea (AOA) culture containing a single AOA strain was enriched from the filtering materials of biological aerated filter. The concentration of AOA reached 3.27 × 107 copies/mL, while its proportion was 91.40%.
Yue, Y, Jin, W, Tu, R, Zhou, X, Du, S, Wang, Q, Han, S, Chen, H, Guo, K, Gao, SH, Xie, GJ   +10 more
core   +1 more source

Ecophysiological Characterization of Ammonia-Oxidizing Archaea and Bacteria from Freshwater [PDF]

Applied and Environmental Microbiology, 2012
ABSTRACT Aerobic biological ammonia oxidation is carried out by two groups of microorganisms, ammonia-oxidizing bacteria (AOB) and the recently discovered ammonia-oxidizing archaea (AOA). Here we present a study using cultivation-based methods to investigate the differences in growth of three AOA cultures and one AOB culture ...
Elizabeth, French, Jessica A, Kozlowski, Maitreyee, Mukherjee, George, Bullerjahn, Annette, Bollmann   +4 more
openaire   +2 more sources

Abundance and diversity of nitrogen-removing microorganisms in the UASB-anammox reactor.

PLoS ONE, 2019
Anaerobic ammonium oxidation is considered to be the most economical and low-energy biological nitrogen removal process. So far, anammox bacteria have not yet been purified from cultures.
Rui Chen, Junqin Yao, Nuerla Ailijiang, Ruisang Liu, Lei Fang, Yinguang Chen   +5 more
doaj   +1 more source

A Novel Polyphosphate‐Degrading Enzyme Confers Growth on Exogenous Polyphosphate in the Archaeon Haloferax volcanii

Environmental Microbiology, Volume 28, Issue 7, July 2026.
A novel polyP‐degrading enzyme with an activity differing from those currently known was found in Haloferax volcanii, conferring the ability for this microbe to grow on extracellular polyP. These findings further our understanding of the potential ecological roles of polyP and how archaea metabolise this essential biopolymer.
Jack W. F. Nicholls, Vincent O'Flaherty, Timothy M. Lenton, John W. McGrath, Jason P. Chin   +4 more
wiley   +1 more source

Predominance of ammonia-oxidizing archaea and nirK-gene-bearing denitrifiers among ammonia-oxidizing and denitrifying populations in sediments of a large urban eutrophic lake (Lake Donghu)

, 2013
The coupled nitrification-denitrification process plays a pivotal role in cycling and removal of nitrogen in aquatic ecosystems. In the present study, the communities of ammonia oxidizers and denitrifiers in the sediments of 2 basins (Guozhenghu Basin ...
Song, Chunlei, Zhou, Yiyong, Zhou, YY (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, 7 Donghu South Rd, Wuhan, Hubei, Peoples R China., Cao, Xiuyun, Hou, Jie   +4 more
core   +1 more source

Ammonia manipulates the ammonia-oxidizing archaea and bacteria in the coastal sediment-water microcosms

, 2015
Ammonia was observed as a potential significant factor to manipulate the abundance and activity of ammonia-oxidizing microorganisms (AOMs) in water environments. For the first time, this study confirmed this phenomenon by laboratory cultivation.
Dai, Tianjiao, Sun, Renhua, Wen, Donghui, Zhang, Yan, Chen, Lujun   +4 more
core   +1 more source

Earthworms With Low Dose n‐MoS2 Improve Soybean Yield and Quality by Reconfiguring Rhizosphere Chemistry and Strengthening Nitrogen Fixation

Physiologia Plantarum, Volume 178, Issue 4, July/August 2026.
ABSTRACT Nano‐enabled fertilizers can enhance biological nitrogen fixation (BNF) and yield in legumes; yet, their interactions with earthworms remain poorly understood. Herein, we performed a 120‐day greenhouse experiment applying low‐dose n‐MoS2 at 10 mg kg−1 with earthworms to evaluate interactive effects on soybean yield and underlying mechanisms ...
Muhammad Nadeem, Muhammad Adeel, Usama Zaheer, Noman Shakoor, Imran Azeem, Taiming Zhang, Yukui Rui   +6 more
wiley   +1 more source

Emergent Macrophytes Act Selectively on Ammonia-Oxidizing Bacteria and Archaea [PDF]

Applied and Environmental Microbiology, 2012
ABSTRACT Ammonia-oxidizing bacteria (AOB) and archaea (AOA) were quantified in the sediments and roots of dominant macrophytes in eight neutral to alkaline coastal wetlands. The AOA dominated in most samples, but the bacterial-to-archaeal amoA gene ratios increased with increasing ammonium levels and pH in
Trias Mansilla, Rosalia, Ruiz Rueda, Olaya, García Lledó, Arantzazu, Vilar Sanz, Ariadna, López i Flores, Rocío, Quintana Pou, Xavier, Hallin, Sara, Bañeras Vives, Lluís   +7 more
openaire   +3 more sources