Results 31 to 40 of about 2,030 (196)

Ubiquity and Diversity of Complete Ammonia Oxidizers (Comammox) [PDF]

open access: yesApplied and Environmental Microbiology, 2018
The discovery of complete ammonia oxidizers (comammox), which oxidize ammonia to nitrate via nitrite, refutes the century-old paradigm that nitrification requires the activity of two types of microbes and redefines a key process in the biogeochemical nitrogen cycle.
Fei Xia   +5 more
openaire   +2 more sources

Variation, distribution, and diversity of canonical ammonia-oxidizing microorganisms and complete-nitrifying bacteria in highly contaminated ecological restoration regions in the Siding mine area

open access: yesEcotoxicology and Environmental Safety, 2021
Canonical ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB) and complete-nitrifying bacteria (comammox) exist in a variety of ecosystems.
Yi Li   +9 more
doaj   +1 more source

Complete nitrification: insights into the ecophysiology of comammox Nitrospira [PDF]

open access: yesApplied Microbiology and Biotechnology, 2018
Nitrification, the oxidation of ammonia via nitrite to nitrate, has been considered to be a stepwise process mediated by two distinct functional groups of microorganisms. The identification of complete nitrifying Nitrospira challenged not only the paradigm of labor division in nitrification, it also raises fundamental questions regarding the ...
Hanna Koch   +2 more
openaire   +4 more sources

Activity and Metabolic Versatility of Complete Ammonia Oxidizers in Full-Scale Wastewater Treatment Systems

open access: yesmBio, 2020
The recent discovery of complete ammonia oxidizers (comammox) contradicts the paradigm that chemolithoautotrophic nitrification is always catalyzed by two different microorganisms.
Yuchun Yang   +7 more
doaj   +1 more source

Nutrient-Limited Enrichments of Nitrifiers From Soil Yield Consortia of Nitrosocosmicus-Affiliated AOA and Nitrospira-Affiliated NOB

open access: yesFrontiers in Microbiology, 2021
The discovery of ammonia-oxidizing archaea (AOA) and complete ammonia-oxidizing (comammox) bacteria widespread in terrestrial ecosystems indicates an important role of these organisms in terrestrial nitrification.
Jonathan Rodriguez   +6 more
doaj   +1 more source

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

open access: yesFrontiers 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   +8 more
doaj   +1 more source

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

open access: yesAppl Environ Microbiol, 2023
ABSTRACT 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 sediments across tropical ...
Lin Y   +10 more
europepmc   +5 more sources

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

open access: yesScientific 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

Comammox bacteria and ammonia oxidizing archaea are major drivers of nitrification in glacier forelands

open access: yesGeoderma, 2023
This study investigated the abundance of comammox bacteria and canonical ammonia-oxidizing bacteria (AOB) and archaea (AOA), and their relative contribution to nitrification along a chronosequence of deglaciated forelands.
Hanxia Yu   +10 more
doaj   +1 more source

Hot spring distribution and survival mechanisms of thermophilic comammox Nitrospira

open access: yesThe ISME Journal, 2023
Abstract The recent discovery of Nitrospira species capable of complete ammonia oxidation (comammox) in non-marine natural and engineered ecosystems under mesothermal conditions has changed our understanding of microbial nitrification.
Yan Zhang   +13 more
openaire   +5 more sources

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