Results 41 to 50 of about 166 (119)

Chemical Speciation Defines Archaeal Ammonia‐Oxidizer Distribution in Yellowstone Hot Springs

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 7, July 2026.
Abstract The hot springs of Yellowstone National Park (YNP) provide a natural laboratory for investigating the influence of chemical speciation and energy availability on the distribution of microbes. Among 133 inorganic chemotrophic energy supplies, total dissolved ammonia oxidation was consistently one of the highest across 63 YNP hot spring samples.
Katelyn Weeks, Elizabeth Trembath‐Reichert, Jordyn Robare, R. Vince Debes II, Alta E. G. Howells, Everett Shock   +5 more
wiley   +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

Evaluation of four primer sets for analysis of comammox communities in black soils

Frontiers in Microbiology, 2022
Comammox, as a newly discovered ammonia oxidizer, urgently needs highly efficient and specific primers to detect its community structure and diversity. In this study, the performance of widely used primer set Ntsp-amoA 162F/359R and newly designed primer
Xin Bai, Xin Bai, Xiaojing Hu, Junjie Liu, Haidong Gu, Haidong Gu, Jian Jin, Xiaobing Liu, Guanghua Wang   +8 more
doaj   +1 more source

Cultivation‐Based Detection of a Novel High‐GC Nitrospira Derived From the Argentinian Copahue Volcano Area

Environmental Microbiology, Volume 28, Issue 4, April 2026.
In this cultivation‐based study, two novel moderately thermophilic Nitrospira enrichments were obtained from the geothermal field Las Máquinas in the Neuquén Province, Argentina. Both nitrite oxidizers, belonging to lineage V or the novel taxonomic lineage VIII, contain quorum‐sensing genes and a high genome GC content of 60.6% and 69.4%.
Eva Spieck, Hanna Koch, Linnea F. M. Kop, Sabine Keuter, Marcel Malinowski, Katharina Sass, Wolfgang Sand, Edgardo Donati, Pablo Perez Garcia, Sebastian Lücker, Alejandra Giaveno   +10 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

Genome-centered metagenomics illuminates adaptations of core members to a partial Nitritation–Anammox bioreactor under periodic microaeration

Frontiers in Microbiology, 2023
The partial nitritation-anaerobic ammonium oxidation (anammox; PN-A) process has been considered a sustainable method for wastewater ammonium removal, with recent attempts to treat low-strength wastewater.
Yung-Hsien Shao, Yu-Wei Wu, Muhammad Naufal, Jer-Horng Wu   +3 more
doaj   +1 more source

Design and Assessment of Species-Level qPCR Primers Targeting Comammox

Frontiers in Microbiology, 2019
Published PCR primers targeting the ammonia monooxygenase gene (amoA) were applied to samples from activated sludge systems operated with low dissolved oxygen (DO) to quantify total and clade-level Nitrospira that perform complete ammonium oxidation ...
Natalie K. Beach, Daniel R. Noguera
doaj   +1 more source

Primer evaluation and development of a droplet digital PCR protocol targeting amoA genes for the quantification of Comammox in lakes

Scientific Reports, 2021
To date, little is known about the ecological significance of Comammox (COMplete AMMonia OXidizers) Nitrospira in the water column of freshwater lakes. Water samples collected along depth profiles were used to investigate the distribution of Comammox in ...
Manuel Harringer, Albin Alfreider
doaj   +1 more source

Hydrological and microbial dynamics in an Arctic wastewater infiltration system

Vadose Zone Journal, Volume 25, Issue 2, March/April 2026.
Abstract Passive wastewater treatment systems are widely used in the Arctic, but studies addressing the vadose zone dynamics that influence the operation and performance of subsurface or soil‐based infiltration systems, such as rapid infiltration basins, are rare.
Débora Boratto, Yannan Huang, Lindsay Johnston, Craig Lake, Lauren Somers, Barret Kurylyk, Rob C. Jamieson   +6 more
wiley   +1 more source

Genomic and Physiological Characteristics of a Novel Nitrite-Oxidizing Nitrospira Strain Isolated From a Drinking Water Treatment Plant

Frontiers in Microbiology, 2020
Nitrite-oxidizing bacteria (NOB) catalyze the second step of nitrification, which is an important process of the biogeochemical nitrogen cycle and is exploited extensively as a biological nitrogen removal process.
Hirotsugu Fujitani, Hirotsugu Fujitani, Kengo Momiuchi, Kento Ishii, Manami Nomachi, Shuta Kikuchi, Norisuke Ushiki, Yuji Sekiguchi, Satoshi Tsuneda, Satoshi Tsuneda   +9 more
doaj   +1 more source