Results 71 to 80 of about 5,307 (169)

Ammonia‐oxidizing archaea: important players in paddy rhizosphere soil? [PDF]

Environmental Microbiology, 2008
Summary The diversity (richness and community composition) of ammonia‐oxidizing archaea (AOA) and bacteria (AOB) in paddy soil with different nitrogen (N) fertilizer amendments for 5 weeks were investigated using quantitative real‐time polymerase chain reaction, denaturing gradient gel electrophoresis (DGGE) jand ...
Xue-Ping, Chen, Yong-Guan, Zhu, Yue, Xia, Ju-Pei, Shen, Ji-Zheng, He   +4 more
openaire   +2 more sources

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

Tillage does not impact soil greenhouse gas emissions in a Central Texas rainfed maize–cotton system

Agrosystems, Geosciences &Environment, Volume 9, Issue 3, September 2026.
Abstract Agricultural soils are a significant source of greenhouse gas (GHG) emissions, primarily as N2O. Monitoring how management practices impact soil gas fluxes (CO2, CH4, and N2O) is useful for making sure conservation practices (e.g., no‐till) are sustainable with regards to all potential environmental impacts.
Dorothy Menefee, Hal Collins, Doug Smith
wiley   +1 more source

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

Glomus iranicum var. Tenuihypharum as a Biofertilizer Modulates Soil Microbial Community Composition and Enhances Soil Carbon Dynamics in Nectarine Cultivation

Journal of Sustainable Agriculture and Environment, Volume 5, Issue 3, September 2026.
ABSTRACT The development of biofertilization strategies based on arbuscular mycorrhizal fungi (AMF) represents a promising approach to enhance crop productivity and soil health while reducing the environmental footprint of conventional fertilization. This study evaluated the effects of Glomus iranicum var.
María Patiño‐García, Rafael López‐Follana, Jose Joaquín Saorín, Pedro Casas, Alfonso Vera, Emilio Nicolás, José A. Siles, Felipe Bastida   +7 more
wiley   +1 more source

Hydroxylamine as an intermediate in ammonia oxidation by globally abundant marine archaea [PDF]

Proceedings of the National Academy of Sciences, 2012
The ammonia-oxidizing archaea have recently been recognized as a significant component of many microbial communities in the biosphere. Although the overall stoichiometry of archaeal chemoautotrophic growth via ammonia (NH 3 ) oxidation to nitrite (NO 2 −
Neeraja, Vajrala, Willm, Martens-Habbena, Luis A, Sayavedra-Soto, Andrew, Schauer, Peter J, Bottomley, David A, Stahl, Daniel J, Arp   +6 more
openaire   +2 more sources

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

Environmental factors shaping the ecological niches of ammonia-oxidizing archaea [PDF]

FEMS Microbiology Reviews, 2009
For more than 100 years it was believed that bacteria were the only group responsible for the oxidation of ammonia. However, recently, a new strain of archaea bearing a putative ammonia monooxygenase subunit A (amoA) gene and able to oxidize ammonia was isolated from a marine aquarium tank.
Tuba H, Erguder, Nico, Boon, Lieven, Wittebolle, Massimo, Marzorati, Willy, Verstraete   +4 more
openaire   +2 more sources

Soil Microbial Communities Changes Along Depth and Contrasting Facing Slopes at the Parque Nacional La Campana, Chile

Microorganisms
The Parque Nacional La Campana (PNLC) was recently recognized for its high soil surface microbial richness. Here, we explored the microbial community structure in soil profiles from contrasting facing slopes where sclerophyllous forest (SF) and ...
Carolina Quinteros-Urquieta, Jean Pierre Francois, Polette Aguilar-Muñoz, Verónica Molina   +3 more
doaj   +1 more source

Linking Abundance and Activity of Ammonia‐Oxidising Bacteria and Archaea in an Agriculturally Impacted First‐Order Stream

Environmental Microbiology, Volume 28, Issue 7, July 2026.
Ammonia‐oxidising archaea (AOA) and bacteria (AOB) coexist in streambed sediments, but their contributions to nitrification remain unresolved. Using field sampling, sequencing, qPCR, microcosm incubations and modelling, we show that AOB dominated nitrification in streambed sediments despite lower abundance, emphasizing the importance of distinguishing ...
Zhe Wang, Anna Störiko, Aileen Jung, Daniel Straub, Olaf A. Cirpka, Holger Pagel, Tillmann Lueders   +6 more
wiley   +1 more source