Results 21 to 30 of about 29,566 (262)

Nitrogen Fixing Azotobacter Species as Potential Soil Biological Enhancers for Crop Nutrition and Yield Stability

open access: yesFrontiers in Microbiology, 2021
Biological nitrogen fixation (BNF) refers to a microbial mediated process based upon an enzymatic “Nitrogenase” conversion of atmospheric nitrogen (N2) into ammonium readily absorbable by roots.
Abderrahim Aasfar   +8 more
doaj   +1 more source

Biological N2 Fixation in wetland rice fields: Estimation and contribution to nitrogen balance

open access: yesPlant and Soil, 1992
This paper 1) reviews improvements and new approaches in methodologies for estimating biological N2 fixation (BNF) in wetland soils, 2) summarizes earlier quantitative estimates and recent data, and 3) discusses the contribution of BNF to N balance in wetland-rice culture.
/Roger, Pierre-Armand, Ladha, J.K.
openaire   +2 more sources

Variation in symbiotic N2 fixation rates among Sphagnum mosses.

open access: yesPLoS ONE, 2020
Biological nitrogen (N) fixation is an important process supporting primary production in ecosystems, especially in those where N availability is limiting growth, such as peatlands and boreal forests.
Eva van den Elzen   +4 more
doaj   +1 more source

Nitrogenases in Oxygen Minimum Zone Waters

open access: yesFrontiers in Marine Science, 2022
Biological dinitrogen (N2) fixation is the pathway making the large pool of atmospheric N2 available to marine life. Besides direct rate measurements, a common approach to explore the potential for N2 fixation in the ocean is a screening-based targeting ...
Christian Furbo Reeder   +2 more
doaj   +1 more source

Productivity and biological N2-fixation in cereal-cowpea intercropping systems in sub-Saharan Africa. A review [PDF]

open access: yesAgronomy for Sustainable Development, 2020
Intercropping is a common practice among farmers in sub-Saharan Africa, regarded as a sustainable way of improving land productivity to meet food and nutritional requirements for a growing population, especially in marginal areas. Cowpea (Vigna unguiculata L.
Talent Namatsheve   +3 more
openaire   +3 more sources

Planktonic Aggregates as Hotspots for Heterotrophic Diazotrophy: The Plot Thickens

open access: yesFrontiers in Microbiology, 2022
Biological dinitrogen (N2) fixation is performed solely by specialized bacteria and archaea termed diazotrophs, introducing new reactive nitrogen into aquatic environments.
Lasse Riemann   +10 more
doaj   +1 more source

A Molecular-Level Mechanism of the Biological N2 Fixation

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 enzyme does to enable selective N 2 reduction ...
Vanessa Jane Bukas, Jens Kehlet Nørskov
openaire   +1 more source

Improving Biological Nitrogen Fixation to Improve Soil Nutrient Status

open access: yesEDIS, 2023
The chemical reduction of atmospheric nitrogen (N2) by hydrogen for incorporation into plant tissue is known as N fixation. Along with the carbon, N has a role in maintaining the optimum source and sink ratio, which ensures crop growth and biological ...
Lakesh K. Sharma   +3 more
doaj   +3 more sources

Heterogeneity of nitrogen fixation in the mesopelagic zone of the South China Sea

open access: yesFrontiers in Marine Science
Biological dinitrogen (N2) fixation, the energetically expensive conversion of N2 gas to ammonia, plays an essential role in balancing the nitrogen budget in the ocean.
Siqi Wu   +17 more
doaj   +1 more source

Endophytic Fungus Drives Nodulation and N2 Fixation Attributable to Specific Root Exudates

open access: yesmBio, 2019
Endophytic fungi play important roles in the modification of ecosystem productivity; however, the underlying mechanisms are only partly understood. A 2-year field plot experiment verified that the endophytic fungus Phomopsis liquidambaris increased ...
Xing-Guang Xie   +5 more
doaj   +1 more source

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