Results 31 to 40 of about 1,496 (173)

Niche differentiation among comammox (Nitrospira inopinata) and other metabolically distinct nitrifiers. [PDF]

Front Microbiol, 2022
Due to global change, increasing nutrient input to ecosystems dramatically affects the nitrogen cycle, especially the nitrification process. Nitrifiers including ammonia-oxidizing archaea (AOAs), ammonia-oxidizing bacteria (AOBs), nitrite-oxidizing bacteria (NOBs), and recently discovered complete ammonia oxidizers (comammoxs) perform nitrification ...
Yang X, Yu X, He Q, Deng T, Guan X, Lian Y, Xu K, Shu L, Wang C, Yan Q, Yang Y, Wu B, He Z.   +12 more
europepmc   +4 more sources

Comprehensive evaluation of primer pairs targeting the ammonia monooxygenase subunit A gene of complete ammonia-oxidizing Nitrospira [PDF]

Microbiology Spectrum
Since the discovery of complete ammonia oxidizers (comammox) within the genus Nitrospira, their distribution and abundance across habitats have been intensively studied to better understand their ecological significance.
Pieter Blom, Garrett J. Smith, Maartje A. H. J. van Kessel, Hanna Koch, Sebastian Lücker   +4 more
doaj   +2 more sources

Functional redundancy and niche complementarity maintain nitrification stability in rapid sand filters [PDF]

Frontiers in Microbiology
Nitrification in drinking water biofilters is mediated by a complex guild of ammonia oxidizers, yet the mechanisms facilitating the coexistence of these functionally redundant nitrifier guild members are not well understood.
Alejandro Palomo, Alejandro Palomo, Alejandro Palomo, S. Jane Fowler, S. Jane Fowler, Ibrahim M. Nemer, Borja Valverde-Pérez, Yan Zheng, Yan Zheng, Yunjie Ma, Yunjie Ma, Barth F. Smets, Barth F. Smets   +12 more
doaj   +2 more sources

Comparative enrichment of complete ammonium oxidation bacteria in floccular sludge reactors: Sequencing batch reactor vs. continuous stirred tank reactor [PDF]

Water Research X
This study attempted to compare the enrichment of complete ammonium oxidation (comammox) bacteria, which are affiliated with Nitrospira and not able to generate nitrous oxide (N2O, a potent greenhouse gas) through biological pathways, in two commonly ...
Ying Zhu, Jiaying Hou, Fangang Meng, Meiying Xu, Limin Lin, Linyan Yang, Xueming Chen   +6 more
doaj   +2 more sources

Monitoring complete ammonia oxidizers bacteria: relevant players for nitrogen removal from wastewater [PDF]

AMB Express
COMAMMOX (Complete Ammonia Oxidizers) bacteria seem to play an important role in nitrification, being able to directly transform ammonia into nitrates. Due to the relevance of this process in WWTPs, different approaches were used in this work to monitor ...
Javier Duque, Leire Besga-Oyanarte, Miguel De Celis, Susana Serrano, José Luis Alonso, Antonio Santos, Lucía Arregui   +6 more
doaj   +2 more sources

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

Appl Microbiol Biotechnol, 2019
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 ...
Koch H, van Kessel MAHJ, Lücker S.
europepmc   +6 more sources

Comammox Nitrospira within the Yangtze River continuum: community, biogeography, and ecological drivers. [PDF]

ISME J, 2020
Abstract The recent discovery of comammox Nitrospira as complete nitrifiers has fundamentally renewed perceptions of nitrogen cycling in natural and engineered systems, yet little is known about the environmental controls on these newly recognized bacteria.
Liu S, Wang H, Chen L, Wang J, Zheng M, Liu S, Chen Q, Ni J.   +7 more
europepmc   +4 more sources

Comammox Nitrospira among dominant ammonia oxidizers within aquarium biofilter microbial communities. [PDF]

Appl Environ Microbiol
ABSTRACT Nitrification by aquarium biofilters transforms ammonia waste (NH 3 /NH 4 + ) to less toxic nitrate (NO 3 - ) via nitrite (NO 2 - ).
McKnight MM, Neufeld JD.
europepmc   +3 more sources

Temporal enrichment of comammox Nitrospira and Ca. Nitrosocosmicus in a coastal plastisphere. [PDF]

ISME J
Abstract Plastic marine debris is known to harbor a unique microbiome (termed the “plastisphere”) that can be important in marine biogeochemical cycles. However, the temporal dynamics in the plastisphere and their implications for marine biogeochemistry remain poorly understood.
Yang Q, Zhong Y, Feng SW, Wen P, Wang H, Wu J, Yang S, Liang JL, Li D, Yang Q, Tam NFY, Peng P.   +11 more
europepmc   +3 more sources

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

Frontiers 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, Seemanti Chakrabarti, Eunkyung Choi, Nisreen Shehadeh, Samantha Sierra-Martinez, Jun Zhao, Willm Martens-Habbena   +6 more
doaj   +1 more source