Results 21 to 30 of about 13,062 (232)

Competition between Nitrospira spp. and Nitrobacter spp. in nitrite-oxidizing bioreactors [PDF]

Biotechnology and Bioengineering, 2006
In this work the question was addressed if in nitrite-oxidizing activated sludge systems the environmental competition between Nitrobacterspp. and Nitrospira spp., which only recently has been discovered to play a role in these systems, is affected by ...
Amann, Andrews, APHA, Standard Methods for the Examination of Water and Wastewater, Atlas, Bartosch, Beccari, Brandt, Daims, Daims, Henze, Jansen, Juretschko, Kim, Kuenen, Manz, Matson, Schmid, Schramm, Strous, Wagner, Wimpenny   +20 more
core   +7 more sources

Community assembly of comammox Nitrospira in coastal wetlands across southeastern China [PDF]

Applied and Environmental Microbiology, 2023
Complete ammonia oxidizers (comammox Nitrospira) are ubiquitous in coastal wetland sediments and play an important role in nitrification. Our study examined the impact of habitat modifications on comammox Nitrospira communities in coastal wetland ...
Yongxin Lin, Kam W. Tang, Guiping Ye, Ping Yang, Hang‐Wei Hu, C. Tong, Yong Zheng, Mengmeng Feng, Milin Deng, Zi-Yang He, Ji‐Zheng He   +10 more
semanticscholar   +4 more sources

A novel Nitrospira lineage isolated from activated sludge using elevated temperatures. [PDF]

FEMS Microbiology Letters, 2023
The genus Nitrospira represents the dominant nitrite-oxidizing clade in most wastewater treatment plants (WWTPs) globally, and several Nitrospira strains have been isolated from activated sludge.
S. Keuter, Hanna Koch, Boris Nowka, A. Lipski, Myriam Kruse, Sebastian Lücker, E. Spieck   +6 more
semanticscholar   +3 more sources

Comammox Nitrospira abundance and contribution to nitrification in a forested landscape

Ecosphere
Nitrification in terrestrial ecosystems is mediated by NH4+‐oxidizing bacteria (AOB) and archaea (AOA). Presently, we understand relatively little about how physiological capacities and environmental tolerances influence their community composition, and ...
Donald R. Zak, Rima A. Upchurch
doaj   +2 more sources

Comammox Nitrospira among dominant ammonia oxidizers within aquarium biofilter microbial communities

Applied and Environmental Microbiology
Nitrification by aquarium biofilters transforms ammonia waste (NH3/NH4+) to less toxic nitrate (NO3-) via nitrite (NO2-). Prior to the discovery of complete ammonia-oxidizing (“comammox” or CMX) Nitrospira, previous research revealed that ammonia ...
Michelle M. McKnight, J. Neufeld
semanticscholar   +3 more sources

Cultivation-Based Detection of a Novel High-GC Nitrospira Derived From the Argentinian Copahue Volcano Area. [PDF]

Environ Microbiol
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%.
Spieck E, Koch H, Kop LFM, Keuter S, Malinowski M, Sass K, Sand W, Donati E, Garcia PP, Lücker S, Giaveno A.   +10 more
europepmc   +2 more sources

Transcriptional activity of ammonia oxidisers in response to soil temperature, moisture and nitrogen amendment [PDF]

Frontiers in Microbiology
The contrasting response of AOA, AOB, and comammox Nitrospira amoA transcript abundance to temperature, moisture, and nitrogen was investigated using soil microcosms.
Chris Chisholm, Hong Di, Keith Cameron, Andriy Podolyan, Jupei Shen, Limei Zhang, Kosala Sirisena, Xueying Che   +7 more
doaj   +2 more sources

Mutualistic relationship between Nitrospira and concomitant heterotrophs [PDF]

Environmental Microbiology Reports, 2021
Summary Nitrifying chemoautotrophs support the growth of diverse concomitant heterotrophs in natural or engineered environments by supplying organic compounds. In this study, we aimed to investigate this microbial association, especially (i) to distinguish whether the relationship between nitrifying ...
Chiho Murakami, Koshi Machida, Yoichi Nakao, Tomonori Kindaichi, Akiyoshi Ohashi, Yoshiteru Aoi   +5 more
openaire   +2 more sources

Ammonium Removal in Aquaponics Indicates Participation of Comammox Nitrospira [PDF]

Current Microbiology, 2021
AbstractAquaponic systems are sustainable solutions for food production combining fish growth (aquaculture) and production of vegetables (hydroponic) in one recirculating system. In aquaponics, nitrogen-enriched wastewater from fish in the aquaculture serves as fertilizer for the plants in the hydroponics, while the nitrogen-depleted and detoxified ...
Heise, Julia, Müller, Hubert, Probst, Alexander J., Meckenstock, Rainer   +3 more
openaire   +3 more sources

Existence and distribution of novel phylotypes of Nitrospira in water columnsof the South China Sea

iScience, 2022
Summary: In the biological nitrogen cycle, nitrite oxidation is performed by nitrite oxidation bacteria, of which Nitrospira is widespread and diverse. Communities of Nitrospira were collected at 25–1500 m depths in the South China Sea.
Wei Sun, Lijing Jiao, Jiapeng Wu, Jiaqi Ye, Mingken Wei, Yiguo Hong   +5 more
doaj   +1 more source