Results 51 to 60 of about 579,869 (390)

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

Effects of CO2 enrichment on photosynthesis, growth, and nitrogen metabolism of the seagrass Zostera noltii [PDF]

open access: yes, 2012
Seagrass ecosystems are expected to benefit from the global increase in CO2 in the ocean because the photosynthetic rate of these plants may be C-i-limited at the current CO2 level.
Alexandre   +56 more
core   +1 more source

Cloning and nitrate induction of nitrate reductase mRNA [PDF]

open access: yesProceedings of the National Academy of Sciences, 1986
Nitrate is the major source of nitrogen taken from the soil by higher plants but requires reduction to ammonia prior to incorporation into amino acids. The first enzyme in the reducing pathway is a nitrate-inducible enzyme, nitrate reductase (EC 1.6.6.1).
C L, Cheng   +3 more
openaire   +2 more sources

Isolation and characterization of Alicycliphilus denitrificans strain BC, which grows on benzene with chlorate as the electron acceptor [PDF]

open access: yes, 2008
A bacterium, strain BC, was isolated from a benzene-degrading chlorate-reducing enrichment culture. Strain BC degrades benzene in conjunction with chlorate reduction.
Broeke, H., ten   +8 more
core   +2 more sources

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

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

Metabolic network analysis reveals microbial community interactions in anammox granules. [PDF]

open access: yes, 2017
Microbial communities mediating anaerobic ammonium oxidation (anammox) represent one of the most energy-efficient environmental biotechnologies for nitrogen removal from wastewater.
Bhattacharjee, Ananda S   +6 more
core   +2 more sources

Influence of lead on N03 uptake and reduction in cucumber seedlings

open access: yesActa Societatis Botanicorum Poloniae, 2014
The influence of PbCl2 on NO3- uptake and activity level of nitrate (NR) and nitrite MR) reductases in cotyledons and roots of cucumber seedlings was studied.
Marek Burzyński, Adam Grabowski
doaj   +1 more source

Trace metal requirements for microbial enzymes involved in the production and consumption of methane and nitrous oxide [PDF]

open access: yes, 2012
Fluxes of greenhouse gases to the atmosphere are heavily influenced by microbiological activity. Microbial enzymes involved in the production and consumption of greenhouse gases often contain metal cofactors.
Glass, Jennifer B., Orphan, Victoria J.
core   +3 more sources

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

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