Results 31 to 40 of about 482,318 (212)

Synthesis and Reactivity of Iron– and Cobalt–Dinitrogen Complexes Bearing PSiP‐Type Pincer Ligands toward Nitrogen Fixation

European Journal of Inorganic Chemistry, 2017
Nobuharu Iwasawa, Yoshiaki Nishibayashi, Kazunari Nakajima   +2 more
exaly   +2 more sources

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

Ocean 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, B. Herut, A. Levi, M. R. Mulholland, I. Berman-Frank   +4 more
doaj   +1 more source

Structural consequences of turnover-induced homocitrate loss in nitrogenase

Nature Communications, 2023
Nitrogenase catalyzes the ATP-dependent reduction of dinitrogen to ammonia during the process of biological nitrogen fixation that is essential for sustaining life.
Rebeccah A. Warmack, Ailiena O. Maggiolo, Andres Orta, Belinda B. Wenke, James B. Howard, Douglas C. Rees   +5 more
doaj   +1 more source

The role of rhizobial (NifV) and plant (FEN1) homocitrate synthases in Aeschynomene/photosynthetic Bradyrhizobium symbiosis

Scientific Reports, 2017
In the most studied rhizobium-legume interactions, the host plant supplies the symbiont with homocitrate, an essential co-factor of the nitrogenase enzyme complex, via the expression of a nodule-specific homocitrate synthase FEN1.
Nico Nouwen, Jean-François Arrighi, Fabienne Cartieaux, Clémence Chaintreuil, Djamel Gully, Christophe Klopp, Eric Giraud   +6 more
doaj   +1 more source

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

Microbial 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, Xiaochen Li, Qiuyue Duan, Jun Fu, Youming Zhang, Hailong Wang, Ji Luan   +6 more
doaj   +1 more source

Low rates of dinitrogen fixation in the eastern tropical South Pacific

Limnology and Oceanography, 2019
Recent work has suggested that the oxygen deficient zone (ODZ) and overlying surface waters of the eastern tropical South Pacific (ETSP) is a potential niche for dinitrogen (N2) fixation.
B. Chang, A. Jayakumar, Brittany Widner, P. Bernhardt, C. Mordy, M. Mulholland, B. Ward   +6 more
semanticscholar   +1 more source

Diazotroph-Derived Nitrogen Assimilation Strategies Differ by Scleractinian Coral Species

Frontiers in Marine Science, 2021
Reef-building corals generally thrive in nutrient-poor tropical waters, where among other elements, nitrogen (N) availability often limits primary productivity.
Valentine Meunier, Sophie Bonnet, Mar Benavides, Andreas Ravache, Olivier Grosso, Christophe Lambert, Fanny Houlbrèque   +6 more
doaj   +1 more source

In situ eutrophication stimulates dinitrogen fixation, denitrification, and productivity in Red Sea coral reefs

, 2020
This work was funded by the German Research Association (DFG Project: Wi 2677/9-1) to C.W. and KAUST baseline funding to B.H.J. and C.R.V. We are thankful to Rudiger Willhaus for his expertise in graph visualisation, and to Najeh Kharbatia for technical ...
Y. El-Khaled, F. Roth, A. Tilstra, Nils Rädecker, Denis B. Karcher, Benjamin Kürten, B. Jones, C. Voolstra, C. Wild   +8 more
semanticscholar   +1 more source

Methodological underestimation of oceanic nitrogen fixation rates. [PDF]

PLoS ONE, 2010
The two commonly applied methods to assess dinitrogen (N(2)) fixation rates are the (15)N(2)-tracer addition and the acetylene reduction assay (ARA). Discrepancies between the two methods as well as inconsistencies between N(2) fixation rates and biomass/
Wiebke Mohr, Tobias Grosskopf, Douglas W R Wallace, Julie LaRoche   +3 more
doaj   +1 more source

Bacterial Life and Dinitrogen Fixation at a Gypsum Rock [PDF]

Applied and Environmental Microbiology, 2004
ABSTRACT The organisms of a bluish-green layer beneath the shards of a gypsum rock were characterized by molecular techniques. The cyanobacterial consortium consisted almost exclusively of Chroococcidiopsis spp. The organisms of the shards expressed nitrogenase activity (C 2 H
Gudrun, Boison, Alexander, Mergel, Helena, Jolkver, Hermann, Bothe   +3 more
openaire   +2 more sources