نتایج جستجو برای: nitrite accumulation

تعداد نتایج: 160410  

Journal: :International Biodeterioration & Biodegradation 2021

Microbial sulfate reduction is the most significant source of hydrogen sulfide (souring) as oil reservoirs are flooded with seawater (with mM concentrations sulfate) for secondary recovery. Nitrate (nitrite) injections into routinely used to constrain souring. Perchlorate was proposed an alternative souring mitigation agent, however its effectiveness remains be determined on a field scale. We c...

Journal: :Plant physiology 1968
G M Paulsen J E Harper

Severely Ca-deficient Triticum aestivum L. seedlings accumulated high levels of nitrite and moderate levels of nitrate and organic nitrogen, but contained unaltered levels of hydroxylamine. Nitrite accumulation was not related to molybdenum deficiency, or altered cellular pH. Nitrate reductase was decreased by Ca deficiency, apparently by repression of enzyme synthesis from accumulated nitrite ...

Journal: :FEMS microbiology letters 2003
Wladyslaw Polcyn Robert Luciński

Induction, energy gain, effect on growth, and interaction of nitrate and nitrite reduction of Bradyrhizobium sp. (Lupinus) USDA 3045 were characterized. Both nitrate and nitrite were reduced in air, although nitrite reduction was insensitive to ammonium inhibition. Anaerobic reduction of both ions was shown to be linked with energy conservation. A dissimilatory ammonification process was detect...

2015
Jatta Saarenheimo Antti J. Rissanen Lauri Arvola Hannu Nykänen Moritz F. Lehmann Marja Tiirola

We studied potential links between environmental factors, nitrous oxide (N2O) accumulation, and genetic indicators of nitrite and N2O reducing bacteria in 12 boreal lakes. Denitrifying bacteria were investigated by quantifying genes encoding nitrite and N2O reductases (nirS/nirK and nosZ, respectively, including the two phylogenetically distinct clades nosZI and nosZII) in lake sediments. Summe...

Journal: :Plant physiology 1992
B Riens H W Heldt

In leaves of spinach plants (Spinacia oleracea L.) performing CO(2) and NO(3) (-) assimilation, at the time of sudden darkening, which eliminates photosystem I-dependent nitrite reduction, only a minor temporary increase of the leaf nitrite content is observed. Because nitrate reduction does not depend on redox equivalents generated by photosystem I activity, a continuation of nitrate reduction...

Journal: :Cancer research 1991
L M Li R G Kilbourn J Adams I J Fidler

The purpose of these studies was to determine whether nitric oxide produced by cytokine-activated murine lung vascular endothelial cells plays a role in their lytic destruction of M-5076 reticulum cell sarcoma. Vascular endothelial cells harvested from perfused lungs of mice were adapted to grow in culture. Cloned lines ascertained to be of endothelial origin were incubated in vitro with interf...

Journal: :Applied and environmental microbiology 1981
M R Betlach J M Tiedje

The kinetics of denitrification and the causes of nitrite and nitrous oxide accumulation were examined in resting cell suspensions of three denitrifiers. An Alcaligenes species and a Pseudomonas fluorescens isolate characteristically accumulated nitrite when reducing nitrate; a Flavobacterium isolate did not. Nitrate did not inhibit nitrite reduction in cultures grown with tungstate to prevent ...

2010
S. E. Vlaeminck A. Terada B. F. Smets H. De Clippeleir T. Schaubroeck M. Carballa W. Verstraete

Aerobic and anoxic ammonium-oxidizing bacteria (AerAOB and AnAOB) cooperate in partial nitritation/anammox systems to remove ammonium from wastewater. In this process, nitrite accumulation is not desirable, since it decreases the nitrogen removal rate and since it can potentially inhibit the AnAOB. This study addressed several aspects of the microbial aggregate size for three independent types ...

2006
Limin Li Robert G. Kilbourn James Adams Isaiah J. Fidler

The purpose of these studies was to determine whether nitric oxide produced by cytokine-activated murine lung vascular endothelial cells plays a role in their lytic destruction of M-5076 reticulum cell sarcoma. Vascular endothelial cells harvested from perfused lungs of mice were adapted to grow in culture. Cloned lines ascertained to be of endothelial origin were incubated in vitro with interf...

Agricultural advancement and population growth have prompted increases in food supplies, and higher crop yields have been made possible through the application of fertilizers. Large quantities of livestock and poultry on farms, along with the accumulation of biomass and agricultural residues, can cause contamination of ground water resources and other water sanitation concerns in both developin...

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