Diazotrophs are bacteria and archaea that fix atmospheric nitrogen(N2) in the atmosphere into bioavailable forms such as ammonia.
A diazotroph is a microorganism that is able to grow without external sources of fixed nitrogen. Examples of organisms that do this are rhizobia and Frankia and Azospirillum. All diazotrophs contain iron-molybdenum or iron-vanadium nitrogenase systems. Two of the most studied systems are those of Klebsiella pneumoniae and Azotobacter vinelandii. These systems are studied because of their genetic tractability and their fast growth.[1]
Diazotrophs are bacteria and archaea that fix atmospheric nitrogen(N2) in the atmosphere into bioavailable forms such as ammonia. A diazotroph is a microorganism...
where they were first described by Captain Cook). Trichodesmium is a diazotroph; that is, it fixes atmospheric nitrogen into ammonium, a nutrient used...
Azotobacter vinelandii is Gram-negative diazotroph that can fix nitrogen while grown aerobically. These bacteria are easily cultured and grown. A. vinelandii...
sulfide-indole motility medium and the phenylalanine deaminase test. It is a diazotroph, able to colonise plant hosts and fix atmospheric nitrogen into a form...
Nitrogen fixation is carried out naturally in soil by microorganisms termed diazotrophs that include bacteria, such as Azotobacter and Rhizobia, and archaea...
Ideonella". Retrieved 2013-05-12. "Ideonella azotifigens sp nov an aerobic diazotroph of the Betaproteobacteria isolated from grass rhizosphere soil and emended...
Azospirillum brasilense is a very well studied, nitrogen-fixing (diazotroph), genetically tractable, Gram-negative, alpha-proteobacterium bacterium, first...
Novosphingobium nitrogenifigens is a Gram-negative, diazotroph and rod-shaped bacterium from the genus Novosphingobium which has been isolated from pulp...
Paenibacillus macerans is a diazotroph bacterium found in soil and plants capable of nitrogen fixation and fermentation. This bacteria was originally discovered...
of strains can fix nitrogen in anaerobic conditions. As a free-living diazotroph, its nitrogen-fixation system has been much-studied, and is of agricultural...
useful for ecological stability and for human society. For example, diazotrophs have the ability to fix nitrogen gas using the enzyme nitrogenase. This...
most fixation is done by free-living or symbiotic bacteria known as diazotrophs. These bacteria have the nitrogenase enzyme that combines gaseous nitrogen...
the fixation of atmospheric nitrogen. This is achieved by a number of diazotrophs. One way this can occur is in the root nodules of legumes that contain...
Biological nitrogen fixation (BNF, performed by the organisms called diazotrophs) is a very old process that probably originated in the Archean eon when...
Institutions University of California, Santa Cruz Cornell University Thesis Virus impacts upon marine bacterial and diazotroph assemblage composition (2005)...
Their project involved a statistical investigation of the effects of Diazotroph bacteria on plant germination. They investigated how the bacteria could...
are particularly noteworthy, as some nitrogen-fixing cyanobacteria (diazotrophs) play an important role in primary production, especially in nitrogen-limited...
qualities that differ from one diazotroph to another. Examples of nif gene structure and regulation in different diazotrophs include: Klebsiella pneumoniae—a...
(nitrogen fixation). In addition to being a model organism for studying diazotrophs, it is used by humans for the production of biofertilizers, food additives...
Herbaspirillum seropedicae is a betaproteobacteria which is an endophytic diazotroph and forms nitrogen-fixing associations with maize (Zea mays), rice (Oryza...
Azotobacter, they can biologically fix nitrogen under aerobic conditions (diazotrophs). Bacteria of the genus Azomonas are known to form intracellular inclusions...
Chanway CP (2018-09-20). "Isolation and identification of endophytic diazotrophs from lodgepole pine trees growing at unreclaimed gravel mining pits in...
Church, M. J.; Dore, J. E.; Falcón, L. I. (2012-08-31). "Database of diazotrophs in global ocean: abundance, biomass and nitrogen fixation rates". Earth...
formation of nodules on the roots of the plant that contain endosymbiotic diazotrophs, which fix atmospheric nitrogen and convert it into a form that is usable...
Azospirillum are aerobic, but many can also function as microaerobic diazotrophs, meaning, under low oxygen conditions, they can change inert nitrogen...
Chris P. (2018-09-20). "Isolation and identification of endophytic diazotrophs from lodgepole pine trees growing at unreclaimed gravel mining pits in...
fixation and plant growth promotion of lodgepole pine by an endophytic diazotroph Paenibacillus polymyxa and its GFP-tagged derivative". Botany. 95 (6):...
Community School, Cork A statistical investigation of the effects of Diazotroph bacteria on plant germination. Third time in seven years Kinsale Community...
Creation of symbiotic environment for nitrogen fixing bacteria (i.e. diazotrophs) and fungi (which help with water absorption) Provision of a 'diffusion...
symbiosis. Many other species of bacteria are able to fix nitrogen (diazotrophs), but few are able to associate intimately with plants and colonize specific...
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