Results 41 to 50 of about 465,287 (202)

Di-nitrogen fixation at the early and late growth stages of soybean

open access: yesActa Scientiarum. Agronomy, 2018
  Soybean derives a significant portion of the required nitrogen (N) from the symbiosis with rhizobia bacteria. However, information on the available genetic variation for N2 fixation capacity in different growth stages of soybean is limited.
Raphael Lemes Hamawaki   +1 more
doaj   +1 more source

fprimeau/N2-FIXATION-NATURE: October 2018 Nature Submission

open access: yes, 2018
<p>This contains the Matlab code that was used for the inverse model run that produced the N2-fixation fields and N:P organic matter export ratios in the Nature manuscript re-submitted on October 26, 2018. Contact Francois Primeau (fprimeau@uci.edu)
François Primeau
core   +1 more source

Preliminary estimates of the contribution of Arctic nitrogen fixation to the global nitrogen budget

open access: yesLimnology and Oceanography Letters, 2017
Dinitrogen (N2) fixation is the source of all biologically available nitrogen on earth, and its presence or absence impacts net primary production and global biogeochemical cycles.
Rachel E. Sipler   +6 more
doaj   +1 more source

Benthic Dinitrogen Fixation Traversing the Oxygen Minimum Zone Off Mauritania (NW Africa)

open access: yesFrontiers in Marine Science, 2017
Despite its potential to provide new nitrogen (N) to the environment, knowledge on benthic dinitrogen (N2) fixation remains relatively sparse, and its contribution to the marine N budget is regarded as minor.
Jessica Gier   +6 more
doaj   +1 more source

Nitrogen fixation rate of Trichodesmium spp. and N2 fixation in the Atlantic Ocean

open access: yes, 2013
Nitrogen fixation rate of Trichodesmium spp.
Beatriz Mouriño-Carballido (577531)   +9 more
core   +1 more source

The Transcriptional Cycle Is Suited to Daytime N2 Fixation in the Unicellular Cyanobacterium “Candidatus Atelocyanobacterium thalassa” (UCYN-A)

open access: yesmBio, 2019
Symbiosis between a marine alga and a N2-fixing cyanobacterium (Cyanobacterium UCYN-A) is geographically widespread in the oceans and is important in the marine N cycle. UCYN-A is uncultivated and is an unusual unicellular cyanobacterium because it lacks
María del Carmen Muñoz-Marín   +5 more
doaj   +1 more source

Nitrogen Isotopes in the Global Ocean [PDF]

open access: yes, 2013
Nitrogen is an essential nutrient for life. Its low abundance throughout much of the sunlit surface ocean limits the growth of primary producers that form the base of ocean ecosystems.
Somes, Christopher J.   +1 more
core  

A Molecular-Level Mechanism of the Biological N2 Fixation [PDF]

open access: yes, 2019
We present a detailed molecular-level mechanism for the biological fixation of atmospheric nitrogen into ammonia. The mechanism is based on a series of electronic structure calculations and provides insight into the key question of what it is that the ...
Vanessa Jane, Bukas   +1 more
core   +2 more sources

A global dataset of nitrogen fixation rates across inland and coastal waters

open access: yesLimnology and Oceanography Letters
Biological nitrogen fixation is the conversion of dinitrogen (N2) gas into bioavailable nitrogen by microorganisms with consequences for primary production, ecosystem function, and global climate.
Robinson W. Fulweiler   +21 more
doaj   +1 more source

Genetic Factors in Rhizobium Affecting the Symbiotic Carbon Costs of N2 Fixation and Host Plant Biomass Production

open access: yes, 1986
The effect of genetic factors in Rhizobium on host plant biomass production and on the carbon costs of N2 fixation in pea root nodules was studied. Nine strains of Rhizobium leguminosarum were constructed, each containing one of three symbiotic plasmids ...
Witty, J. F.   +6 more
core   +1 more source

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