Abstract:
:Nitrous oxide (N2 O) is emitted during microbiological nitrogen (N) conversion processes, when N2 O production exceeds N2 O consumption. The magnitude of N2 O production vs. consumption varies with pH and controlling net N2 O production might be feasible by choice of system pH. This article reviews how pH affects enzymes, pathways and microorganisms that are involved in N-conversions in water engineering applications. At a molecular level, pH affects activity of cofactors and structural elements of relevant enzymes by protonation or deprotonation of amino acid residues or solvent ligands, thus causing steric changes in catalytic sites or proton/electron transfer routes that alter the enzymes' overall activity. Augmenting molecular information with, e.g., nitritation or denitrification rates yields explanations of changes in net N2 O production with pH. Ammonia oxidizing bacteria are of highest relevance for N2 O production, while heterotrophic denitrifiers are relevant for N2 O consumption at pH > 7.5. Net N2 O production in N-cycling water engineering systems is predicted to display a 'bell-shaped' curve in the range of pH 6.0-9.0 with a maximum at pH 7.0-7.5. Net N2 O production at acidic pH is dominated by N2 O production, whereas N2 O consumption can outweigh production at alkaline pH. Thus, pH 8.0 may be a favourable pH set-point for water treatment applications regarding net N2 O production.
journal_name
Environ Microbioljournal_title
Environmental microbiologyauthors
Blum JM,Su Q,Ma Y,Valverde-Pérez B,Domingo-Félez C,Jensen MM,Smets BFdoi
10.1111/1462-2920.14063subject
Has Abstractpub_date
2018-05-01 00:00:00pages
1623-1640issue
5eissn
1462-2912issn
1462-2920journal_volume
20pub_type
杂志文章,评审abstract::The distribution and the metabolic pathways of bacteria degrading steroid compounds released by eukaryotic organisms were investigated using the bile salt cholate as model substrate. Cholate-degrading bacteria could be readily isolated from freshwater environments. All isolated strains transiently released steroid deg...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.12407
更新日期:2014-05-01 00:00:00
abstract::Pathogenic Vibrio parahaemolyticus strains producing either or both of a thermostable direct haemolysin (TDH) and a TDH-related haemolysin (TRH) encoded by tdh and trh genes, respectively, are isolated at a low rate from the environment. However, recently we observed that a considerable percentage of APW (alkaline pep...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2006.00990.x
更新日期:2006-06-01 00:00:00
abstract::The d- and l-forms of lactate are important fermentation metabolites produced by intestinal bacteria but are found to negatively affect mucosal barrier function and human health. Both enantiomers of lactate can be converted with acetate into the presumed beneficial butyrate by a phylogenetically related group of anaer...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.15269
更新日期:2020-11-01 00:00:00
abstract::Global change models indicate that rainfall patterns are likely to shift towards more extreme events concurrent with increasing atmospheric carbon dioxide concentration ([CO2 ]). Both changes in [CO2 ] and rainfall regime are known to impact above- and belowground communities, but the interactive effects of these glob...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.13802
更新日期:2017-08-01 00:00:00
abstract::When grown as a biofilm in laboratory flow chambers Pseudomonas aeruginosa can develop mushroom-shaped multicellular structures consisting of distinct subpopulations in the cap and stalk portions. We have previously presented evidence that formation of the cap portion of the mushroom-shaped structures in P. aeruginosa...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2008.01658.x
更新日期:2008-09-01 00:00:00
abstract::Stable carbon isotope signatures of diagnostic lipid biomarkers have suggested that Roseiflexus spp., the dominant filamentous anoxygenic phototrophic bacteria inhabiting microbial mats of alkaline siliceous hot springs, may be capable of fixing bicarbonate via the 3-hydroxypropionate pathway, which has been character...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2007.01323.x
更新日期:2007-08-01 00:00:00
abstract::In Australia, saxitoxin production is strain dependent within the bloom-forming freshwater cyanobacterium Anabaena circinalis. Freshwater cyanobacteria are exposed to rapid fluctuations in environmental nutrient concentrations, and their adaption is vital for competition, succession and dominance. Two elements of envi...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.13131
更新日期:2016-02-01 00:00:00
abstract::Deep-sea ecosystems, such as cold seeps and hydrothermal vents, have high biomass, even though they are located in the benthic zone, where no sunlight is present to provide energy for organism proliferation. Based on the coexistence of the reduced gases and chemoautotrophic microbes, it is inferred that the energy fro...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.15347
更新日期:2020-12-07 00:00:00
abstract::To obtain new amidases of biocatalytic relevance, we used microorganisms indigenous to different types of soil and sediment as a source of DNA for the construction of environmental gene banks, following two different strategies. In one case, DNA was isolated from soil without preceding cultivation to preserve a high d...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2004.00643.x
更新日期:2004-09-01 00:00:00
abstract::The ascidian Cystodytes dellechiajei (Della Valle, 1877) (phylum Chordata, class Ascidiacea, family Polycitoridae) is a colonial tunicate that inhabits benthic rock environments in the Atlantic, Pacific and Indian Oceans, as well as the Mediterranean Sea. Its life cycle has two phases, the adult sessile colony and the...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2006.01170.x
更新日期:2007-02-01 00:00:00
abstract::Campylobacter lari is a rare human pathogen most commonly associated with birds and shellfish. Little information has been published regarding its prevalence in other environments, or on its potential role as a reservoir of antibiotic resistance. In this study, we characterized 109 C. lari isolated from a range of hos...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2007.01295.x
更新日期:2007-07-01 00:00:00
abstract::Bacillus anthracis, Bacillus cereus and Bacillus thuringiensis have been described as members of the Bacillus cereus group but are, in fact, one species. B. anthracis is a mammal pathogen, B. thuringiensis an entomopathogen and B. cereus a ubiquitous soil bacterium and an occasional human pathogen. In two clinical iso...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1046/j.1462-2920.2001.00220.x
更新日期:2001-08-01 00:00:00
abstract::Marine Group II archaea are widely distributed in global oceans and dominate the total archaeal community within the upper euphotic zone of temperate waters. However, factors controlling the distribution of MGII are poorly delineated and the physiology and ecological functions of these still-uncultured organisms remai...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.14004
更新日期:2018-02-01 00:00:00
abstract::The interactions of Vibrio aestuarianus 01/032 with haemolymph of the bivalves Mytilus galloprovincialis and Crassostrea gigas were investigated to understand if haemolymph components (haemocytes and soluble factors) could be involved in the higher resistance to microbial infection shown by mussels in comparison with ...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.12750
更新日期:2015-11-01 00:00:00
abstract::Fire blight has been detected recently in several areas of northern Spain and north-eastern Italy. To follow spread of the disease within Europe, more than 120 Erwinia amylovora strains isolated from 1957-1900 in England, France, Germany, The Netherlands, Belgium, Poland, Italy and Spain were assayed using pulsed-fiel...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1046/j.1462-2920.2002.00277.x
更新日期:2002-02-01 00:00:00
abstract::A meromictic lake ecosystem (Mahoney Lake, BC, Canada) was investigated to elucidate the significance of chemocline bacteria in the total carbon cycle under natural conditions. In this lake, primary production by oxygenic phototrophs was insufficient to support the observed net secondary production of the calanoid cop...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1046/j.1462-2920.1999.00026.x
更新日期:1999-06-01 00:00:00
abstract::Besides 19 potential reductive dehalogenase genes, the genome of Dehalococcoides ethenogenes strain 195 contains over 60 genes annotated as encoding oxidoreductases, including five hydrogenase complexes and a formate dehydrogenase (Fdh). Using quantitative reverse transcriptase polymerase chain reaction, we found that...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2006.01090.x
更新日期:2006-09-01 00:00:00
abstract::Proteorhodopsin (PR) is a light-driven proton pump that has been found in a variety of marine bacteria, including Pelagibacter ubique, a member of the ubiquitous SAR11 clade. The goals of this study were to explore the diversity of PR genes and to estimate their abundance in the North Atlantic Ocean using quantitative...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2007.01436.x
更新日期:2008-01-01 00:00:00
abstract::Changes in community structure and activity of the dissimilatory nitrate-reducing community were investigated across a glacier foreland in the Central Alps to gain insight into the successional pattern of this functional group and the driving environmental factors. Bulk soil and rhizosphere soil of Poa alpina was samp...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2006.01051.x
更新日期:2006-09-01 00:00:00
abstract::Environmental SSU rDNA-based surveys are contributing to the dramatic revision of eukaryotic high-level diversity and phylogeny as the number of sequence data increases. This ongoing revolution gives the opportunity to test for the presence of some eukaryotic taxa in environments where they have not been found using c...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2010.02225.x
更新日期:2010-09-01 00:00:00
abstract::It is generally assumed that acquisition of antibiotic resistance leads to non-specific fitness costs. We have tested the alternative hypothesis that acquisition of antibiotic resistance may not always produce a general burden to the microorganisms, as measured in competition tests, but rather lead to specific changes...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2012.02727.x
更新日期:2012-08-01 00:00:00
abstract::The presence of two insertion sequences, IS406 and IS407, was tested by polymerase chain reaction (PCR) amplification in 25 strains representing 15 Burkholderia species and the close relative Ralstonia pickettii. A total of 50% of the 25 strains contained at least one of the two insertion sequences (ISs) and a statist...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1046/j.1462-2920.2001.00251.x
更新日期:2001-12-01 00:00:00
abstract::Serratia sp. ATCC 39006 produces intracellular gas vesicles to enable upward flotation in water columns. It also uses flagellar rotation to swim through liquid and swarm across semi-solid surfaces. Flotation and motility can be co-regulated with production of a β-lactam antibiotic (carbapenem carboxylate) and a linear...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.15048
更新日期:2020-07-01 00:00:00
abstract::Organic matter degradation in marine environments is essential for the recycling of nutrients, especially under conditions of anoxia where organic matter tends to accumulate. However, little is known about the diversity of the microbial communities responsible for the mineralization of organic matter in the absence of...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.14902
更新日期:2019-12-19 00:00:00
abstract::Contaminated soils are subject to diurnal and seasonal temperature variations during on-site ex-situ bioremediation processes. We assessed how diurnal temperature variations similar to that in summer at the site from which petroleum hydrocarbon-contaminated soil was collected affect the soil microbial community and th...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.12846
更新日期:2015-12-01 00:00:00
abstract::The marine gamma-Proteobacterium Alcanivorax borkumensis is highly specialized in the assimilation of aliphatic hydrocarbons, and makes up a large part of the biomass in oil-polluted marine environments. In addition to the previously identified alkane hydroxylase AlkB1, a second alkane hydroxylase (AlkB2) showing 65% ...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2004.00567.x
更新日期:2004-03-01 00:00:00
abstract::Bioactive amounts of antibiotics as well as resistant bacteria reach the soil through manure fertilization. We investigated plasmids that may stimulate the environmental spread and interspecies transfer of antibiotic resistance. After treatment of two soils with manure, either with or without the sulfonamide antibioti...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2008.01819.x
更新日期:2009-04-01 00:00:00
abstract::The trophic linkage between marine bacteria and phytoplankton in the surface ocean is a key step in the global carbon cycle, with almost half of marine primary production transformed by heterotrophic bacterioplankton within hours to weeks of fixation. Early studies conceptualized this link as the passive addition and ...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.13834
更新日期:2017-09-01 00:00:00
abstract::Microbial consumption is one of the main processes, along with photolysis and ventilation, that remove the biogenic trace gas dimethylsulfide (DMS) from the surface ocean. Although a few isolates of marine bacteria have been studied for their ability to utilize DMS, little is known about the characteristics or phyloge...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/j.1462-2920.2006.01102.x
更新日期:2006-12-01 00:00:00
abstract::Phytoplankton influence the composition of bacterial communities, but the taxonomic specificity of algal-bacterial interactions is unclear due to the aggregation of ecologically distinct bacterial populations by community characterization methods. Here we examine whether phytoplankton seasonal succession affects the c...
journal_title:Environmental microbiology
pub_type: 杂志文章
doi:10.1111/1462-2920.12529
更新日期:2015-03-01 00:00:00