Results 111 to 120 of about 17,530 (156)
Some of the next articles are maybe not open access.
The Biochemistry of Symbiotic Nitrogen Fixation
Nature, 1941THE study of the nitrogen fixation which proceeds within nodule-bear ing leguminous plants provides a common meeting-ground for several branches of natural science. Bacteriologists, botanists, chemists, students of agriculture, all have found opportunities, not always lucrative, for investigation.
+4 more sources
A Survey of Symbiotic Nitrogen Fixation by Rhizobia
1998Nitrogen fixation, that is reduction of nitrogen gas into ammonia, is not restricted to rhizobia. In fact, this property, although unique to prokaryotic organisms, is widely spread among the prokaryotic phylogenetic tree (Young, 1992). In addition, the properties of the enzymatic complex which allows the saturation of the very stable triple bond of ...
Kaminski, P. +2 more
openaire +2 more sources
Energy requirement for symbiotic nitrogen fixation
Nature, 1977Comparing the energy required by legumes for symbiotic nitrogen fixation with that of assimilation of nitrate, Gibson concluded the costs to be about the same. About 15% of net photosynthetic production by the plant may be used in meeting its nitrogen requirements.
openaire +2 more sources
Inhibition of Symbiotic Nitrogen Fixation by Nitrate
1988Symbiotic nitrogen fixation is inhibited in the presence of nitrate. Yarious symbiotic processes are affected including nitrogenase activity which decreases just after addition of nitrate to the medium. Experimental results suggest that this inhibition is not due to reduction of nitrate in the shoots and roots but to nitrate ion metabolism in root ...
Heckmann, M.O., Drevon, Jean-Jacques
openaire +2 more sources
Diversity and regulation of symbiotic nitrogen fixation in plants
Current Biology, 2023Plants associate with nitrogen-fixing bacteria to secure nitrogen, which is generally the most limiting nutrient for plant growth. Endosymbiotic nitrogen-fixing associations are widespread among diverse plant lineages, ranging from microalgae to angiosperms, and are primarily one of three types: cyanobacterial, actinorhizal or rhizobial.
Peng, Xu, Ertao, Wang
openaire +2 more sources
Nature, 1945
SINCE 1940 I have not had the opportunity of reporting to English readers the results of our investigations on symbiotic nitrogen fixation. As an opportunity now offers itself, I will briefly record in the following the chief points of our research during the War.
openaire +1 more source
SINCE 1940 I have not had the opportunity of reporting to English readers the results of our investigations on symbiotic nitrogen fixation. As an opportunity now offers itself, I will briefly record in the following the chief points of our research during the War.
openaire +1 more source
The Mechanism of Symbiotic Nitrogen Fixation
2016Nitrogen is a building block of life. Molecular nitrogen is the relatively inert atmospheric form of this element, and it must be fixed into more biologically accessible forms in order to be used for organic processes. In total, approximately 380 teragrams of nitrogen per year are fixed by atmospheric, biological, and industrial nitrogen fixation ...
Barney A. Geddes, Ivan J. Oresnik
openaire +1 more source
Redox regulation of differentiation in symbiotic nitrogen fixation
Biochimica et Biophysica Acta (BBA) - General Subjects, 2015Nitrogen-fixing symbiosis between Rhizobium bacteria and legumes leads to the formation of a new organ, the root nodule. The development of the nodule requires the differentiation of plant root cells to welcome the endosymbiotic bacterial partner. This development includes the formation of an efficient vascular tissue which allows metabolic exchanges ...
Werner Ribeiro, Carolina +3 more
openaire +3 more sources
Nitrogen Fixation by Symbiotic and Free-Living Spirochetes
Science, 2001Spirochetes from termite hindguts and freshwater sediments possessed homologs of a nitrogenase gene ( nifH ) and exhibited nitrogenase activity, a previously unrecognized metabolic capability in spirochetes. Fixation of 15-dinitrogen was demonstrated with termite gut Treponema ZAS-9 and free ...
Lilburn, T. G. +5 more
openaire +3 more sources
Biochemical and molecular studies of symbiotic nitrogen fixation
Current Opinion in Biotechnology, 1991Abstract Significant advances in the area of symbiotic nitrogen fixation include the identification of a rhizobial factor responsible for nodule induction and new insights into nodulin gene regulation, as well as the elucidation of a signal transduction pathway involved in nitrogen fixation gene control.
F J, Bruijn, J A, Downie
openaire +2 more sources