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[mass noun] The chemical processes by which atmospheric nitrogen is assimilated into organic compounds, especially by certain microorganisms as part of the nitrogen cycle.
- ‘Plastids perform essential cellular functions and harbour a complex biosynthetic machinery for nitrogen fixation, amino acid biosynthesis, sulphur metabolism, isoprenoid biosynthesis, and gene expression.’
- ‘In addition, when Cuscuta parasitises Lupinus albus, atmospheric nitrogen fixation by the nitrogen-fixing host is severely depressed.’
- ‘Legumes, such as soybean, are able to capture atmospheric nitrogen and utilize it through the process of nitrogen fixation.’
- ‘It does this by integrating natural processes such as nutrient cycling, nitrogen fixation, soil regeneration and natural enemies of pests into food production processes.’
- ‘Thus, we can see that nitrogen fixation is a unique process in which the soybean plant and bacteria work closely together throughout the season.’
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