We sampled Thaumarchaeota populations in the northern Gulf of Mexico, including shelf waters under the Mississippi River outflow plume that are subject to recurrent hypoxia. Data from this study allowed us to: (1) test the hypothesis that Thaumarchaeota would be abundant in this region; (2) assess phylogenetic composition of these populations for comparison with other regions; (3) compare the e...

Nobiletin (NOB) is a polymethoxylated flavone. It has multiple biologic activities that can modulate oxidative stress in many cancer types. However, there no study the literature examined effects of NOB on levels Metastatic Castration-Resistant Prostate Cancer (MCRPC) yet. Motivated from this gap, we investigated impact and superoxide dismutase (SOD) enzyme MCRPC as preliminary study. For purpo...

Abstract The abundance and phylogenetic diversity of functional genes involved in nitrification were assessed Rothamsted field plots under contrasting management regimes—permanent bare fallow, grassland, arable (wheat) cultivation maintained for more than 50 years. Metagenome metatranscriptome analysis indicated nitrite oxidizing bacteria (NOB) abundant ammonia archaea (AOA) (AOB) all soils. mo...

Membrane-aerated biofilm reactors (MABR) are being applied for autotrophic nitrogen removal, yet control of turnover remains challenging in MABR counter-diffusion biofilms. In this study, we regulated microbial activities two lab-scale MABRs by providing continuous versus intermittent aeration. Nitrogen consumption different functional groups was estimated from bulk measurements via a mass bala...

The application of partial nitritation and anammox processes (PN/A) to remove nitrogen can improve the energy efficiency wastewater treatment plants (WWTPs) as well diminish their operational costs. However, there are still several limitations that preventing widespread PN/A in urban WWTPs such as: (a) loss performance stability units operated at sludge line, when is thermally pretreated increa...

Partial nitritation was pointed out as the key step to implement autotrophic nitrogen removal processes at low temperature. This study investigated initiation and maintenance of a process with simultaneous COD in sequencing batch reactor (SBR) run 15 °C fed primary settled urban wastewater characterized by 42 ± 10 mg TOC/L 45 4 NH4+-N/L. A nitrite accumulation ratio nearly 100% observed long-te...

In a field experiment, the impact of repeated application of the antibiotic sulfadiazine (SDZ)-contaminated pig manure was assessed on functional microbial communities involved in ammonia and nitrite oxidation in the root-rhizosphere complexes (RRCs) of diverse plants composing a pasture. We surveyed the abundance of ammonia-oxidizing archaea (AOA) and bacteria (AOB) as well as Nitrobacter- and...

To assess links between the diversity of nitrite-oxidizing bacteria (NOB) in agricultural grassland soils and inorganic N fertilizer management, NOB communities in fertilized and unfertilized soils were characterized by analysis of clone libraries and denaturing gradient gel electrophoresis (DGGE) of 16S rRNA gene fragments. Previously uncharacterized Nitrospira-like sequences were isolated fro...