Results 21 to 30 of about 14,221 (217)

Molecular evidence for sediment nitrogen fixation in a temperate New England estuary [PDF]

open access: yes, 2016
Primary production in coastal waters is generally nitrogen (N) limited with denitrification outpacing nitrogen fixation (N2-fixation). However, recent work suggests that we have potentially underestimated the importance of heterotrophic sediment N2 ...
Foster, Sarah Q.   +3 more
core   +3 more sources

Hydroponic Growth and the Nondestructive Assay for Dinitrogen Fixation [PDF]

open access: yesPlant Physiology, 1981
Hydroponic growth medium must be well buffered if it is to support sustained plant growth. Although 1.0 millimolar phosphate is commonly used as a buffer for hydroponic growth media, at that concentration it is generally toxic to a soybean plant that derives its nitrogen solely from dinitrogen fixation.
J, Imsande, E J, Ralston
openaire   +2 more sources

Relative abundance of nitrogen cycling microbes in coral holobionts reflects environmental nitrate availability

open access: yesRoyal Society Open Science, 2021
Recent research suggests that nitrogen (N) cycling microbes are important for coral holobiont functioning. In particular, coral holobionts may acquire bioavailable N via prokaryotic dinitrogen (N2) fixation or remove excess N via denitrification activity.
Arjen Tilstra   +6 more
doaj   +1 more source

Minimal ATP‐Independent N2‐Reducing Systems Defined by L‐Cluster‐Bound Nitrogenase Assembly Platforms

open access: yesAngewandte Chemie, EarlyView.
Association of the L‐cluster with the nitrogenase assembly proteins NifEN (NifENL) or NifB (NifBL) intrinsically endows these proteins with N2‐reducing activity, enabling in vitro N2‐reduction by NifENL and NifBL when supplied with chemical reductants or photoexcited quantum dots while supporting in vivo N2‐fixation in NifENL‐ and NifENL‐expressing ...
Robert Quechol   +4 more
wiley   +2 more sources

Possible association of diazotrophs with marine zooplankton in the Pacific Ocean

open access: yesMicrobiologyOpen, 2016
Dinitrogen fixation, the biological reduction in N2 gas to ammonia contributes to the supply of new nitrogen in the surface ocean. To understand the diversity and abundance of potentially diazotrophic (N2 fixing) microorganisms associated with marine ...
Kazi Md. Azimuddin   +9 more
doaj   +1 more source

Draft genome sequence of Acidithiobacillus ferrooxidans YQH-1

open access: yesGenomics Data, 2015
Acidithiobacillus ferrooxidans YQH-1 is a moderate acidophilic bacterium isolated from a river in a volcano of Northeast China. Here, we describe the draft genome of strain YQH-1, which was assembled into 123 contigs containing 3,111,222 bp with a G + C ...
Lei Yan   +6 more
doaj   +1 more source

Springtime contribution of dinitrogen fixation to primary production across the Mediterranean Sea [PDF]

open access: yesOcean Science, 2013
Dinitrogen (N2) fixation rates were measured during early spring across the different provinces of Mediterranean Sea surface waters. N2 fixation rates, measured using 15N2 enriched seawater, were lowest in the eastern basin and increased westward with a ...
E. Rahav   +4 more
doaj   +1 more source

N2-fixation and residual N effect of four legume species and four companion grass species [PDF]

open access: yes, 2011
Inclusion of forage legumes in low-input forage mixtures improves herbage production and soil fertility through addition of nitrogen (N) from N2-fixation.
Eriksen, Jørgen   +3 more
core   +1 more source

Diazo Transfer From Nitrous Oxide Employing Phosphorus Ylides

open access: yesAngewandte Chemie, EarlyView.
A phosphorus ylide‐mediated strategy achieves the direct fixation of nitrous oxide (N2O) to access diazo compounds, which after intra‐ or intermolecular trapping, afford N2‐containing organic building blocks. This approach provides an alternative to hazardous diazo‐transfer reagents and establishes N2O fixation as a sustainable methodology.
Jhen‐Kuei Yu   +4 more
wiley   +2 more sources

Systematic identification of endogenous strong constitutive promoters from the diazotrophic rhizosphere bacterium Pseudomonas stutzeri DSM4166 to improve its nitrogenase activity

open access: yesMicrobial Cell Factories, 2023
Background Biological nitrogen fixation converting atmospheric dinitrogen to ammonia is an important way to provide nitrogen for plants. Pseudomonas stutzeri DSM4166 is a diazotrophic Gram-negative bacterium isolated from the rhizosphere of cereal ...
Guangle Yu   +6 more
doaj   +1 more source

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