Results 1 to 10 of about 1,784 (205)

Nitrogen source influences the interactions of comammox bacteria with aerobic nitrifiers. [PDF]

Microbiol Spectr
While the co-existence of comammox Nitrospira with canonical nitrifiers is well documented in diverse ecosystems, there is still a dearth of knowledge about the mechanisms underpinning their interactions.
Vilardi KJ, Johnston J, Dai Z, Cotto I, Tuttle E, Patterson A, Stubbins A, Pieper KJ, Pinto AJ.   +8 more
europepmc   +4 more sources

Unusual Plastoquinones in Non-Phototrophic Nitrifying Bacteria. [PDF]

Environ Microbiol Rep
Chemolithoautotrophic nitrifying bacteria of the genus Nitrospira exclusively possess unusual methyl‐plastoquinones with a standard redox potential below that of canonical plastoquinone and ubiquinone, suggesting functional roles in bidirectional electron transport.
Bale NJ, Fujimura H, Pjevac P, Koenen M, Ikeda H, Itagaki S, Yamamoto Y, Palmetzhofer J, Sedlacek CJ, Palabikyan H, Sinninghe Damsté JS, Wagner M, Shiigi H, Daims H.   +13 more
europepmc   +6 more sources

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

Water Res 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 ...
Zhu Y, Hou J, Meng F, Xu M, Lin L, Yang L, Chen X.   +6 more
europepmc   +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 ...
Duque J, Besga-Oyanarte L, De Celis M, Serrano S, Alonso JL, Santos A, Arregui L.   +6 more
europepmc   +2 more sources

Hydrazine Synthase From Anammox Is Inhibited by Linear and Aromatic Alkynes. [PDF]

Environ Microbiol
Linear and aromatic alkynes inhibit anammox in culture and in wetlands. The inhibition by alkynes is specific to the hydrazine synthase, a key enzyme in the anammox pathway. ABSTRACT N2O emissions by nitrifiers are often estimated using selective inhibitors, such as 1‐alkynes.
Maryan C, Nuijten GHL, Crombie AT, Lücker S, Gibson V, Hernández M, Murrell JC, Lehtovirta-Morley LE.   +7 more
europepmc   +2 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

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

Microbiol Spectr
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.
Blom P, Smith GJ, van Kessel MAHJ, Koch H, Lücker S.   +4 more
europepmc   +2 more sources

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

Front Microbiol
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.
Palomo A, Fowler SJ, Nemer IM, Valverde-Pérez B, Zheng Y, Ma Y, Smets BF.   +6 more
europepmc   +2 more sources

Genetic and transcriptional profiles of ammonia oxidizing communities in Bohai sediments: abundance, activity, and environmental correlations. [PDF]

Front Microbiol
Ammonia oxidation, a crucial part in nitrogen cycle, is thought to be jointly driven by ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB), and complete ammonia oxidation (comammox) in the ocean.
Jiang Y, Lou X, Wang M, Zheng M, Wang Z, Chen H.   +5 more
europepmc   +2 more sources

Nitrification inhibitor chlorate and nitrogen substrates differentially affect comammox Nitrospira in a grassland soil. [PDF]

Front Microbiol
IntroductionThrough the combined use of two nitrification inhibitors, Dicyandiamide (DCD) and chlorate with nitrogen amendment, this study aimed to investigate the contribution of comammox Nitrospira clade B, ammonia oxidizing bacteria (AOB) and archaea (
Shah AS, Hsu PC, Chisholm C, Podolyan A, Cameron K, Luo J, Stenger R, Carrick S, Hu W, Ferguson SA, Wei W, Shen J, Zhang L, Liu H, Zhao T, Wei W, Ding W, Pan H, Liu Y, Li B, Du J, Di HJ.   +21 more
europepmc   +2 more sources