Results 71 to 80 of about 1,784 (205)

Evaluating Performance of Bouteloua gracilis Cultivars After Drought: The Role of the Soil Microbiome

open access: yesGrass and Forage Science, Volume 80, Issue 4, December 2025.
ABSTRACT After the Dust Bowl in the 1930s, it was common to reseed native grasses in areas impacted by the drought to help restore grassland ecosystem structure and function. Given the forecasts of intensified drought events, reseeding may need to be employed more frequently to enhance post‐drought recovery. For such reseeding efforts, it is imperative
Carina Donne   +3 more
wiley   +1 more source

Niche differentiation and symbiotic association among ammonia/nitrite oxidizers in a full-scale rotating biological contactor

open access: yes, 2022
Although the distribution of ammonia/nitrite oxidizers had been profiled in different habitats, current understanding is still limited regarding their niche differentiation in the integrated biofilm reactors, the symbiotic associations of ammonia/nitrite
Chen, Yiqiang   +8 more
core   +2 more sources

Media Optimization, Strain Compatibility, and Low-Shear Modeled Microgravity Exposure of Synthetic Microbial Communities for Urine Nitrification in Regenerative Life-Support Systems

open access: yes, 2019
Urine is a major waste product of human metabolism and contains essential macro- and micronutrients to produce edible microorganisms and crops. Its biological conversion into a stable form can be obtained through urea hydrolysis, subsequent nitrification,
Boon, Nico   +4 more
core   +1 more source

Heterotrophic ammonia oxidation by Alcaligenes balances ROS generation and terminal electron transport

open access: yesmLife, Volume 4, Issue 5, Page 527-538, October 2025.
Abstract Heterotrophic nitrifiers are bacteria that aerobically oxidize ammonia in the presence of organic carbon sources, which differs from autotrophic nitrifiers that extract energy from ammonia oxidation for cell metabolism and growth. The physiological significance of heterotrophic ammonia oxidation remains unclear, even though this process has ...
Runhua Wang   +11 more
wiley   +1 more source

Community Composition and Abundance of Bacterial, Archaeal and Nitrifying Populations in Savanna Soils on Contrasting Bedrock Material in Kruger National Park, South Africa [PDF]

open access: yes, 2016
Savannas cover at least 13% of the global terrestrial surface and are often nutrient limited, especially by nitrogen. To gain a better understanding of their microbial diversity and the microbial nitrogen cycling in savanna soils, soil samples were ...
Cassandre S. Lazar   +6 more
core   +3 more sources

Substrate Effect on the Contribution of Ammonium and Urea to Marine Nitrification and Nitrous Oxide Production

open access: yesEnvironmental Microbiology, Volume 27, Issue 10, October 2025.
The urea to ammonium concentration ratio is a good predictor of the relative importance of urea and ammonium to nitrite and N2O production in the ocean. In addition, the urea to ammonium ratio may be a key factor in shaping the genetic capability of marine ammonia‐oxidising archaea for urea utilisation.
Weiyi Tang   +10 more
wiley   +1 more source

Subsoiling Combined With Winter Active Italian Ryegrass Can Reduce Nitrous Oxide Emissions Without Increasing Nitrate Leaching: Evidence From Lysimeter and Field Plot Trials

open access: yesSoil Use and Management, Volume 41, Issue 4, October‐December 2025.
ABSTRACT Subsoiling is a common practice for improving soil structure and has recently been recognised for its potential to reduce nitrous oxide (N2O) emissions. However, its impact on nitrate (NO3−–N) leaching must also be considered if it is to be used as a mitigation strategy. This study investigated N2O emissions, NO3−–N leaching and grass yield in
Juan Liu   +11 more
wiley   +1 more source

Growth of complete ammonia oxidizers on guanidine. [PDF]

open access: yesNature
Guanidine is a chemically stable nitrogen compound that is excreted in human urine and is widely used in manufacturing of plastics, as a flame retardant and as a component of propellants, and is well known as a protein denaturant in biochemistry 1–3 ...
Palatinszky M   +20 more
europepmc   +3 more sources

Enrichment of Comammox and Nitrite-Oxidizing Nitrospira From Acidic Soils

open access: yesFrontiers in Microbiology, 2020
In agricultural soils fertilized with a high amount of ammonium nitrogen, the pH decreases because of the oxidation of ammonia by nitrifiers. Molecular-based analyses have revealed that members of the genus Nitrospira dominate over other nitrifiers in ...
Yu Takahashi   +6 more
doaj   +1 more source

Investigating the Atmospheric Microbial Ecosystem Through Theory, Bioenergetics, and Numerical Modeling: A Breath of Fresh Air for Aeromicrobiology

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 130, Issue 8, August 2025.
Abstract The atmosphere may constitute the Earth's largest microbial ecosystem, yet it remains the least understood. While microorganisms can persist and may even thrive in the polyextremes of the Earth's atmosphere, it is still unknown whether the atmosphere sustains an active microbial community.
Eloi Martinez‐Rabert   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy