Results 81 to 90 of about 6,257 (199)

Archaeal Tetraether Lipids as Tracers for Past Marine Environmental Change

open access: yesPaleoceanography 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   +39 more
wiley   +1 more source

Exploring the potential for oxygen production by cable bacteria in the deep sediment through the investigation of amoA gene expression

open access: yes, 2023
noneThis thesis aims to investigate the potential for oxygen production by cable bacteria in the deep sediment. To accomplish this, an indirect approach was used, specifically studying the expression of the amoA gene, belonging to the Nitrosomonas genus,
RRUCI, ERINDA
core  

Water Pulses and Greenhouse Gas Emissions During Summer Fallow in a Semiarid Environment

open access: yesEuropean Journal of Soil Science, Volume 77, Issue 4, July/August 2026.
ABSTRACT Rainfall‐driven pulses of greenhouse gas (GHG) emissions are key but often overlooked components of the annual carbon and nitrogen budgets. This study aimed to quantify the effect of three barley‐based production systems on soil carbon and nitrogen dynamics during the summer fallow, with particular emphasis on the impact of rainfall events on ...
Francisco Cafaro La Menza   +7 more
wiley   +1 more source

Temperature‐Dependent Effects of Laboratory‐Heated Dissolved Organic Matter on Aquatic Microbiome Composition and Nitrogen Cycling Dynamics

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 131, Issue 6, June 2026.
Abstract Wildfires generate partially combusted biomass that mobilizes to aquatic ecosystems as dissolved pyrogenic organic matter (dPyOM) in runoff, where it can impact surface water quality. However, the influence of dPyOM on aquatic microbiome composition, functional gene distribution, and biogeochemical processes remains poorly understood, with ...
Saraf Islam Promi   +3 more
wiley   +1 more source

Relationship of archaeal (AOA) and bacterial amoA abundance (AOB) with gross soil nitrification rates.

open access: yes, 2014
The relationships between archaeal amoA copy numbers (AOA) and bacterial amoA copy numbers (AOB) with gross nitrification rates were marginally significant for AOA (p = 0.051) and AOB (p = 0.072).
Judith Prommer (517077)   +10 more
core   +1 more source

Analysis and Quantification of Ammonia-Oxidizing Bacteria Community with amoA Gene in Sewage Treatment Plants

open access: yesJournal of Microbiology and Biotechnology, 2012
The analysis and quantification of ammonia-oxidizing bacteria (AOB) is crucial, as they initiate the biological removal of ammonia-nitrogen from sewage. Previous methods for analyzing the microbial community structure, which involve the plating of samples or culture media over agar plates, have been inadequate because many microorganisms found in a ...
Sun Hwa, Hong   +3 more
openaire   +2 more sources

Elucidating the Functional and Taxonomic Diversity of Soil Microbial Communities From Three Commercial Soybean Farms in South Africa

open access: yesEnvironmental Microbiology Reports, Volume 18, Issue 3, June 2026.
Prior to inoculation of soybeans, South African soils contain no Bradyhizobia that nodulate and fix nitrogen in soybeans. Soybean cultivation with prolonged inoculation resulted in the establishment and dominance of Bradyrhizobia in three soybean farms in South Africa as revealed by a microbial community study using shotgun metagenomics. ABSTRACT Prior
Khumbudzo Ndhlovu   +5 more
wiley   +1 more source

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

open access: yesFrontiers 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

Evaluation of combined root exudate and rhizosphere microbiota sampling approaches to elucidate plant–soil–microbe interactions

open access: yesNew Phytologist, Volume 250, Issue 6, Page 4077-4092, June 2026.
Summary Deciphering the root exudate‐driven interplay between plants and the rhizosphere microbiota is essential for understanding plant adaptation to the environment and future‐proofing crop production. However, sampling root exudates and rhizosphere soil remains challenging due to the low throughput and destructive nature of the process.
Carmen Escudero‐Martinez   +15 more
wiley   +1 more source

Relative amoA gene abundance of Thaumarchaea and Bacteria in sampled freshwater (F1–F6) and marine (M) aquaria, assuming 1 and 2.5 copies of amoA gene per thaumarchaeal and bacterial cell, respectively.

open access: yes, 2014
Relative amoA gene abundance of Thaumarchaea and Bacteria in sampled freshwater (F1–F6) and marine (M) aquaria, assuming 1 and 2.5 copies of amoA gene per thaumarchaeal and bacterial cell, respectively.
Nico Boon (169479)   +5 more
core   +1 more source

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