Nitrogen fixation is a process in which nitrogen (N2) in the atmosphere is converted into ammonium (NH4+). Atmospheric nitrogen or molecular nitrogen (N2) is relatively inert: it does not easily react with other chemicals to form new compounds. The fixation process frees up the nitrogen atoms from their diatomic form (N2) to be used in other ways....
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any natural or industrial process that causes free nitrogen, which is a relatively inert gas plentiful in air, to combine chemically with other ... [10 related articles]
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The conversion of atmospheric nitrogen to biologically usable nitrates.
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A process whereby nitrogen fixing bacteria living in mutualistic associations with plants convert atmospheric nitrogen to nitrogen compounds that plants can utilise directly.
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<biochemistry> The incorporation of atmospheric nitrogen into ammonia by various bacteria, catalysed by nitrogenase. ... This is an essential stage in the nitrogen cycle and is the ultimate source of all nitrogen in living organisms. In the sea, the main nitrogen fixers are Cyanobacteria. ... There are several free living bacteria in soil tha...
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Conversion of atmospheric nitrogen gas into forms useful to plants and other organisms by lightning, bacteria, and blue-green algae; it is part of the nitrogen cycle.
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The conversion of atmospheric nitrogen to nitrogen compounds that can be utilised by plants, accomplished by nodule-forming bacteria on legume roots or by soil micro-organisms.
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The incorporation of atmospheric nitrogen into ammonia by various bacteria, catalysed by nitrogenase. This is an essential stage in the nitrogen cycle and is the ultimate source of all nitrogen in living organisms. In the sea, the main nitrogen fixers are Cyanobacteria. There are several free-living bacteria in soil that fix nitrogen including species of Azotobacter , Clostridium and Klebsiella . Rhizobium only fixes nitrogen when in symbiotic association, in root nodules, with leguminous plants. The oxygen-sensitive nitrogenase is protected by plant-produced leghaemoglobin and the plant obtains fixed nitrogen from the bacteria. See Frankia > Frankia.
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is the conversion of airborne nitrogen into nitrates, mainly by bacteria mainly in the soil. Nitrogen has little biological use, nitrates are food to other plants. Because of the commercial significance of nitrates, there are now industrial nitrogen fixing processes based on the Haber process.
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The biological conversion of atmospheric nitrogen to a form that can be used by plants for their growth.
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Type: Term Definitions: 1. process in which atmospheric nitrogen is converted to ammonia.
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Biological or chemical process where gaseous nitrogen is converted into solid forms of nitrogen. Biological fixation of nitrogen is done by specialized organisms like microorganisms like bacteria, actinomycetes, and cyanobacteria. Chemical fixation occurs at high temperatures. One natural process that can produce enough heat to fix atmospher...
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The conversion of gaseous nitrogen into a form usable by plants. Ususally by bacteria.
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[
n] - the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria
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bacterial biochemical pathways that incorporate inorganic nitrogen gas into organic forms more easily used by other organisms
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In soils, the conversion of free nitrogen from the air by soil organisms to nitrogen compounds that eventually become available to plants.
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The conversion of gaseous nitrogen to nitrate by specialized bacteria.
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The conversion of atmospheric nitrogen to plant compounds by microorganisms in soil and root nodules. (e.g. in legumes such as clover or peas)
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noun the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria
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Process by which nitrogen in the atmosphere is converted into nitrogenous compounds by the action of micro-organisms, such as cyanobacteria and bacteria, in conjunction with certain legumes. Several chemical processes duplicate nitrogen fixation to produce fertilizers; see nitrogen cycle. The key enzyme in natural nitrogen fixation is nitro...
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A process in which a type of soil-dwelling bacteria, in association with the roots of certain plants (such as legumes), convert nitrogen in the air into a form that plants can use.
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any process of combining atmospheric nitrogen with other elements, either by chemical means or by bacterial action: used chiefly in the preparation of fertilizers, industrial products, etc. · this process as performed by certain bacteria found in the nodules of leguminous plants, which make the resulting nitrogenous compounds available to t...
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