Results 81 to 90 of about 15,618 (215)

Correlating microbial community profiles with geochemical data in highly stratified sediments from the Arctic Mid-Ocean Ridge [PDF]

, 2012
Microbial communities and their associated metabolic activity in marine sediments have a profound impact on global biogeochemical cycles. Their composition and structure are attributed to geochemical and physical factors, but finding direct correlations ...
Baumberger, Tamara, Flesland, Kristin, Fonseca, Rita, Hannisdal, Bjarte, Jorgensen, Steffen Leth, Lanzén, Anders, Pedersen, Rolf B., Schleper, Christa, Steen, Ida H., Thorseth, Ingunn H., Øvreås, Lise   +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

Reduced Tillage Intercropping With Thymus hyemalis Reshapes the Rare Soil Microbiome and Co‐Occurrence Networks in a Semi‐Arid Almond Orchard

Journal of Sustainable Agriculture and Environment, Volume 5, Issue 1, March 2026.
ABSTRACT Environmentally friendly farming practices are gaining interest, and intercropping is a promising option to protect soil health, yet its effects on orchard microbiomes and functions remain underexplored. In this study, we assessed a 3‐year intercropping assay of Capparis spinosa (D1) and Thymus hyemalis (D2) with almond and reduced tillage in ...
Jessica Cuartero, Beat Frey, Margarita Ros, Jose Antonio Pascual, Virginia Sánchez‐Navarro, Loredana Canfora, Onurcan Özbolat, Marcos Egea‐Cortines, Antonella Lamontanara, Carolina Boix‐Fayos, Maria Martinez‐Mena, Maria Almagro, Elvira Diaz‐Pereira, Raul Zornoza   +13 more
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

Ensambles de arqueas y bacterias en la Zona de Mínimo Oxígeno del ecosistema de surgencia de Chile central determinados mediante biomarcadores orgánicos [PDF]

, 2015
Indexación: Web of Science; Scielo.Organic biomarkers were used to investigate the influence of seasonal changes in oxygenation and water chemistry on the distribution of archaea and bacteria in the water column and surface sediments of the continental ...
LEVIPAN, HÉCTOR A., PANTOJA, SILVIO, QUIÑONES, RENATO A., SEPÚLVEDA, JULIO, SRAIN, BENJAMÍN, SUMMONS, ROGER E.   +5 more
core   +2 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

Surface‐Driven Protocell Formation in Geologically Relevant Early Earth Environment

ChemSystemsChem, Volume 8, Issue 2, March 2026.
Illustration of a prebiotic early‐Earth environment showing cell‐like protocells (blue spheres) and other complex organic molecules (pink and green spheres) distributed across terrestrial surfaces and within subsurface niches. Volcanic landscapes and mineral‐rich substrates provide diverse geochemical settings for the assembly and evolution of ...
Pamela Knoll, Silvia Holler
wiley   +1 more source

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

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

Occurrence of Ammonia-Oxidizing Archaea in Wastewater Treatment Plant Bioreactors [PDF]

Applied and Environmental Microbiology, 2006
ABSTRACT We report molecular evidence that ammonia-oxidizing archaea (AOA) occur in activated sludge bioreactors used to remove ammonia from wastewater. Using PCR primers targeting archaeal ammonia monooxygenase subunit A ( amoA ) genes, we retrieved and compared 75 sequences from five wastewater treatment
Park, Hee-Deung, Wells, George F., Bae, Hyokwan, Criddle, Craig S., Francis, Christopher A.   +4 more
openaire   +3 more sources