Results 41 to 50 of about 4,455 (169)

Ammonia- and Nitrite-Oxidizing Bacteria are Dominant in Nitrification of Maize Rhizosphere Soil Following Combined Application of Biochar and Chemical Fertilizer

Frontiers in Microbiology, 2021
Autotrophic nitrification is regulated by canonical ammonia-oxidizing archaea (AOA) and bacteria (AOB) and nitrite-oxidizing bacteria (NOB). To date, most studies have focused on the role of canonical ammonia oxidizers in nitrification while neglecting ...
Ping Sun, Ziting Zhao, Pingshan Fan, Wei Chen, Yunze Ruan, Qing Wang   +5 more
doaj   +1 more source

DNA- and RNA-SIP Reveal Nitrospira spp. as Key Drivers of Nitrification in Groundwater-Fed Biofilters

mBio, 2019
Nitrification, the oxidative process converting ammonia to nitrite and nitrate, is driven by microbes and plays a central role in the global nitrogen cycle.
Arda Gülay, S. Jane Fowler, Karolina Tatari, Bo Thamdrup, Hans-Jørgen Albrechtsen, Waleed Abu Al-Soud, Søren J. Sørensen, Barth F. Smets   +7 more
doaj   +1 more source

Long-term Effects of Ni(II), Co(II) and Zn(II) Limitation on the Nitrite-oxidation Activity in Continuous Tests Using PVA Gel Carriers

Journal of Water and Environment Technology
Nitrite-oxidizing bacteria (NOB) can be inhibited by high concentrations of heavy metals; however, trace elements (TE) are critical for their growth and sustained activity.
Ryo Hamabe, Yayoi Saito, Takashi Kondo, Mohamed Sheikh Mohamed, Iori Mishima, Kazuichi Isaka   +5 more
doaj   +1 more source

Iron/Manganese Oxide‐Bound Nitrogen Suppresses Microbial Mediated Nitrate Reduction in Soil

Land Degradation &Development, EarlyView.
ABSTRACT Nitrogen cycling plays a pivotal role in sustaining ecosystem productivity and stability, while the chemical forms of nitrogen in soils critically influence both its efficiency and pathways. In this study, farmland soils from the Anning River Basin—an important watershed in Southwest China—were investigated to examine the regulatory effects of
Yu Cheng, Xuehao Zheng, Miao Yang, Shoujiang Liu   +3 more
wiley   +1 more source

Genomic Analysis of Two Phylogenetically Distinct Nitrospira Species Reveals Their Genomic Plasticity and Functional Diversity

Frontiers in Microbiology, 2018
The genus Nitrospira represents a dominant group of nitrite-oxidizing bacteria in natural and engineered ecosystems. This genus is phylogenetically divided into six lineages, for which vast phylogenetic and functional diversity has been revealed by ...
Norisuke Ushiki, Hirotsugu Fujitani, Yu Shimada, Tomohiro Morohoshi, Yuji Sekiguchi, Satoshi Tsuneda   +5 more
doaj   +1 more source

Evaluating Oxygen Demand in Mainstream Anammox, A2O and Partial Denitrification/Anammox (PD/A) Processes: A Gradient‐Based Sensitivity Analysis

Water and Environment Journal, EarlyView.
This graphical abstract illustrates the oxygen demand reduction potential of the mainstream anammox process compared to conventional A2O and PD/A processes. It visually demonstrates maximum oxygen savings of 28.25% and 18.58%, respectively, under optimal conditions.
Sungryul Kim, Kyungik Gil
wiley   +1 more source

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

Effects of Nitrogen Fertilizer on Nitrospira- and Nitrobacter-like Nitrite-Oxidizing Bacterial Microbial Communities under Mulched Fertigation System in Semi-Arid Area of Northeast China

Agronomy, 2023
The accumulation of nitrite is frequently overlooked, despite the fact that nitrification is the most essential phase of the entire nitrogen (N) cycle and that nitrifying bacteria play a significant role in nitrification.
Yuhan Yuan, Meng Wang, Xuewan Feng, Qian Li, Yubo Qin, Bo Sun, Cuilan Li, Jinjing Zhang, Hang Liu   +8 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

Metagenomic approaches reveal differences in genetic diversity and relative abundance of nitrifying bacteria and archaea in contrasting soils

Scientific Reports, 2021
The abundance and phylogenetic diversity of functional genes involved in nitrification were assessed in Rothamsted field plots under contrasting management regimes—permanent bare fallow, grassland, and arable (wheat) cultivation maintained for more than ...
Ian M. Clark, David J. Hughes, Qingling Fu, Maïder Abadie, Penny R. Hirsch   +4 more
doaj   +1 more source