The main process to remove Nr from the environment is microbial denitrification.
In soil, N2O is produced through the process of incomplete microbial denitrification or as a by-product of nitrification.
We conclude that P addition may increase gaseous loss of N as N2O in P-poor soils through microbial denitrification rather than nitrification when inorganic N is abundant.
At higher levels of soil N, it is likely that microbial denitrification may be limited by some other factor, such as C availability.
Members of the genus Streptomyces are widespread in soil and are likely exposed to NO produced by microbial denitrification and by the NO synthases of plants and microbes.
Microbial denitrification is not considered important in human-associated microbial communities.
The pH and alkalinity values of a biological system are vital parameters for microbial denitrification.
Moreover, because nitrite is produced and often accumulates during the microbial denitrification process, they are intrinsically coupled.
Microbial denitrification is, besides NO synthase activity and acidic decomposition of NO2-, alternativeive pathway of NO formation in humans.
As discussed above, microbial denitrification might be relevant in other healthy and diseased sites of the body.
