Results 41 to 50 of about 124,422 (325)

Improving Biological Nitrogen Fixation to Improve Soil Nutrient Status

EDIS, 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, Ayush K. Sharma, Andrew Ogram, Hardeep Singh   +3 more
doaj   +3 more sources

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

Frontiers 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, Siqi Wu, Xianhui Sean Wan, Xianhui Sean Wan, Moge Du, Moge Du, Xirong Chen, Corday R. Selden, Mar Benavides, Mar Benavides, Mar Benavides, Sophie Bonnet, Carolin R. Löscher, Carolin R. Löscher, M. Robert Hamersley, Margaret R. Mulholland, Xiuli Yan, Shuh-Ji Kao   +17 more
doaj   +1 more source

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

mBio, 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, Feng-Min Zhang, Teng Yang, Yan Chen, Xiao-Gang Li, Chuan-Chao Dai   +5 more
doaj   +1 more source

How many metals does it take to fix N2? A mechanistic overview of biological nitrogen fixation [PDF]

, 2006
During the process of biological nitrogen fixation, the enzyme nitrogenase catalyzes the ATP-dependent reduction of dinitrogen to ammonia. Nitrogenase consists of two component metalloproteins, the iron (Fe) protein and the molybdenum-iron (MoFe) protein;
Howard, James B., Rees, Douglas C.
core   +1 more source

Five decades of N2 fixation research in the North Atlantic Ocean

Frontiers in Marine Science, 2015
Dinitrogen (N2) fixation (the reduction of atmospheric N2 to ammonium by specialized prokaryotic microbes), represents an important input of fixed nitrogen and contributes significantly to primary productivity in the oceans.
Mar eBenavides, Maren eVoss
doaj   +1 more source

Extreme enrichment in atmospheric 15N15N. [PDF]

, 2017
Molecular nitrogen (N2) comprises three-quarters of Earth's atmosphere and significant portions of other planetary atmospheres. We report a 19 per mil (‰) excess of 15N15N in air relative to a random distribution of nitrogen isotopes, an enrichment that ...
Fischer, Tobias P, Haslun, Joshua A, Hu, Huanting, Kohl, Issaku E, Li, Shuning, Ostrom, Nathaniel E, Schauble, Edwin A, Yeung, Laurence Y, Young, Edward D   +8 more
core   +1 more source

Symbiotic Nitrogen Fixation and the Challenges to Its Extension to Nonlegumes [PDF]

, 2016
Access to fixed or available forms of nitrogen limits the productivity of crop plants and thus food production. Nitrogenous fertilizer production currently represents a significant expense for the efficient growth of various crops in the developed world.
Ané, Jean-Michel, Crook, Matthew B., Garcia Costas, Amaya, Garcia, Kevin, Geddes, Barney A., Kouri, Evangelia D., Mus, Florence, Oldroyd, Giles E. D., Paramasivan, Ponraj, Peters, John W., Poole, Philip S., Ryu, Min-Hyung, Udvardi, Michael K., Voigt, Christopher A.   +13 more
core   +1 more source

Hydrides mediate nitrogen fixation

Cell Reports Physical Science, 2022
Summary: The fixation of atmospheric dinitrogen to ammonia is crucial for the sustainable growth of human society. The reduction of N2 to NH3 needs the inputs of electrons and hydrogens, which could be supplied by hydridic hydrogens. Hydrides are thus at
Qianru Wang, Yeqin Guan, Jianping Guo, Ping Chen   +3 more
doaj   +1 more source

From N2 fixation to N2O emission in a grass-clover mixture [PDF]

, 2004
In organic dairy farming, a major N input to the plant-soil system comes from biological N2 fixation by pasture legumes, but knowledge is sparse on how much of the fixed N2 is lost from the pastures as N2O.
Ambus, Per, Thyme, Mette
core  

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source