Results 211 to 220 of about 19,357 (255)
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In situ Identification of Ammonia-oxidizing Bacteria
Systematic and Applied Microbiology, 1995Summary A 16S rRNA-targeted oligonucleotide probe (NEU) specific for some representatives of the lithoautotrophic ammonia-oxidizing bacteria was developed based on comparative sequence analysis. Whole cell hybridization of target cells in combination with digital microscopy was used to determine the optimal hybridization stringency.
Michael Wagner +2 more
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Enzymology of the oxidation of ammonia to nitrite by bacteria
Antonie van Leeuwenhoek, 1997The enzymes which catalyze the oxidation of ammonia to nitrite by autotrophic bacteria are reviewed. A comparison is made with enzymes which catalyze the same reactions in methylotrophs and organotrophic heterotrophic bacteria.
A B, Hooper +3 more
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Environmental Science and Pollution Research, 2018
In this study, two laboratory nitrifying reactors (NRI and NRII), which were seeded by sludge from different sources and operated under different operating conditions, were found to possess distinct dominant ammonia-oxidizing microorganisms. Ammonia-oxidizing archaeal (AOA) amoA genes outnumbered ammonia-oxidizing bacterial (AOB) amoA genes in reactor ...
Papitchaya, Srithep +2 more
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In this study, two laboratory nitrifying reactors (NRI and NRII), which were seeded by sludge from different sources and operated under different operating conditions, were found to possess distinct dominant ammonia-oxidizing microorganisms. Ammonia-oxidizing archaeal (AOA) amoA genes outnumbered ammonia-oxidizing bacterial (AOB) amoA genes in reactor ...
Papitchaya, Srithep +2 more
openaire +2 more sources
2023
Ammonia oxidising bacteria (AOB) and archaea are ubiquitous microorganisms, but their abundance and diversity vary widely across environments and play a crucial role in many ecosystems and aquatic ecosystems in particular. However, characterization of AOB communities require genomic methods as they are difficult to isolate from samples.
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Ammonia oxidising bacteria (AOB) and archaea are ubiquitous microorganisms, but their abundance and diversity vary widely across environments and play a crucial role in many ecosystems and aquatic ecosystems in particular. However, characterization of AOB communities require genomic methods as they are difficult to isolate from samples.
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Ammonia-Oxidizing Bacteria in Wastewater
2011Ammonia-oxidizing bacteria (AOB) have a key role in the conversion of ammonia to nitrite in wastewater treatment plants (WWTPs). The characterization of AOB communities in such systems requires the use of genomic methods as AOB are difficult to isolate from environmental samples.
Bellucci, Micol, Curtis, Thomas P
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Genetic Transformation of Ammonia-Oxidizing Bacteria
2011The study of traits of ammonia-oxidizing bacteria (AOB) by genetic transformation is an approach that is facilitated by the availability of AOB genome sequences. To transform an AOB, a vector construct is introduced into the cells by electroporation or conjugation to effect the inactivation, complementation, or expression of a selected gene.
Luis A, Sayavedra-Soto, Lisa Y, Stein
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Ammonia biofiltration and community analysis of ammonia-oxidizing bacteria in biofilters
Bioresource Technology, 2009Biological removal of ammonia was investigated using compost and sludge as packing materials in laboratory-scale biofilters. The aim of this study is to characterize the composition of ammonia-oxidizing bacteria (AOB) in two biofilters designed to remove ammonia.
Yin, Jun, Xu, Wenfeng
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Diversity of ammonia monooxygenase operon in autotrophic ammonia-oxidizing bacteria
Archives of Microbiology, 2001Autotrophic ammonia-oxidizing bacteria use the essential enzyme ammonia monooxygenase (AMO) to transform ammonia to hydroxylamine. The amo operon consists of at least three genes, amoC, amoA, and amoB; amoA encodes the subunit containing the putative enzyme active site.
Norton, Jeanette M. +3 more
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c-Cytochromes of the ammonia-oxidizing chemolithoautotrophic bacteria
Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1991The major enzymes associated with the oxidation of ammonia by chemolithoauthotrophic bacteria are studied, including some cytochromes c , are described and details of their properties are given.
A B, Hooper +3 more
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Ecological characteristics of anaerobic ammonia oxidizing bacteria
Applied Microbiology and Biotechnology, 2013Anaerobic ammonium oxidation (anammox) is the microbial conversion of ammonium and nitrite to dinitrogen gas. The functional microbes of anammox reaction are anammox bacteria, which were discovered in a wastewater treatment system for nitrogen removal.
Shuang, Ding +5 more
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