Results 41 to 50 of about 506,048 (358)

Potassium Nitrate Priming Affects the Activity of Nitrate Reductase and Antioxidant Enzymes in Tomato Germination

open access: yes, 2014
Priming has been used to improve the performance of germination at the field, and potassium nitrate (KNO 3 ) is a promising compound for this purpose. The nitrate (NO 3 ) could be absorbed, being used in the metabolism of the embryo, through the enzyme ...
T. S. Lara   +4 more
semanticscholar   +1 more source

The bZIP transcription factor MdHY5 regulates anthocyanin accumulation and nitrate assimilation in apple

open access: yesHorticulture Research, 2017
The basic leucine zipper (bZIP) transcription factor HY5 plays a multifaceted role in plant growth and development. Here the apple MdHY5 gene was cloned based on its homology with Arabidopsis HY5. Expression analysis demonstrated that MdHY5 transcription
Jian-Ping An   +6 more
semanticscholar   +1 more source

Rapid drug-susceptibility testing of Mycobacterium tuberculosis clinical isolates to first-line antitubercular drugs by nitrate reductase assay: A comparison with proportion method

open access: yesInternational Journal of Mycobacteriology, 2016
Objective/background: Early initiation of therapy in patients with tuberculosis is imperative for its control. Conventional methods of susceptibility testing such as the proportion method (PM) require visual detection and counting of colonies that takes ...
Amrish Kohli   +5 more
doaj   +1 more source

The stability of 3 transmembrane and 4 transmembrane human vitamin K epoxide reductase models [PDF]

open access: yes, 2016
3 transmembrane and 4 transmembrane helices models are suggested for the human vitamin K epoxide reductase (VKOR). In this study, we investigate the stability of the human 3 transmembrane/4 transmembrane VKOR models employing a coarse-grained normal mode analysis and molecular dynamics simulation.
arxiv   +1 more source

Calcium Rubidium Nitrate: Mode-Coupling $β$ Scaling without Factorization [PDF]

open access: yesPhys. Rev. E 64, 021303 (2001), 2001
The fast dynamics of viscous calcium rubidium nitrate is investigated by depolarized light scattering, neutron scattering and dielectric loss. Fast $\beta$ relaxation evolves as in calcium potassium nitrate. The dynamic susceptibilities can be described by the asymptotic scaling law of mode-coupling theory with a shape parameter $\lambda = 0.79$; the ...
arxiv   +1 more source

Arabidopsis nitrate reductase activity is stimulated by the E3 SUMO ligase AtSIZ1

open access: yesNature Communications, 2011
Small ubiquitin-related modifier (SUMO) is a small polypeptide that modulates protein activity and regulates hormone signalling, abiotic and biotic responses in plants. Here we show that AtSIZ regulates nitrogen assimilation in Arabidopsis through its E3
B. Park, J. Song, H. Seo
semanticscholar   +1 more source

Nitrate Utilization by Nitrate Reductase-deficient Barley Mutants [PDF]

open access: yesPlant Physiology, 1981
Two nitrate reductase-deficient barley mutants were studied for growth on nitrate and ammonium sources of nitrogen and for resistance to chlorate. Although nitrate reductase-deficient mutants in some species are chlorate-resistant (unable to reduce chlorate to chlorite), the barley mutants used in these studies when grown on nitrate and treated with ...
Robert L. Warner, Andris Kleinhofs
openaire   +3 more sources

Non-toxic total nitrogen determination using a low alkaline persulfate digestion

open access: yesMethodsX, 2020
Measuring total nitrogen, nitrate, and nitrite is critical for compliance with water safety standards. Previous methods for measuring total nitrogen were hazardous, time consuming, and expensive.
Jacob L. Studt   +5 more
doaj  

Sources of reducing equivalents for nitrate reductase in Pisum arvense roots

open access: yesActa Societatis Botanicorum Poloniae, 2014
The sources of the nitrate reductase (E.C 1.6.6.1) reducing equivalents were searched for in roots of Pisum arvense by measuring in vivo and in vitro nitrate reductase activity.
Grażyna Kłobus
doaj   +1 more source

Comment on "Atmospheric ionization by high-fluence, hard spectrum solar proton events and their probable appearance in the ice core archive" by A.L. Melott et al [PDF]

open access: yes, 2016
Melott et al. [2016] suggest that individual solar proton events (SPEs) are detectable as nitrate ion spikes in ice cores. They use the high fluence, high energy (hard spectrum) SPE of 23 February 1956 to calculate an enhancement of HNO3 from the surface to 46 km that is equivalent to a ~120 ng cm-2 nitrate ion spike observed in the GISP2H ice core ...
arxiv   +1 more source

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