Premium
Comparison of Effects of Nitrate, Nitrite, and Nitric Oxide on Reduction of Nitrous Oxide to Dinitrogen by Soil Microorganisms
Author(s) -
Gaskell J. F.,
Blackmer A. M.,
Bremner J. M.
Publication year - 1981
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1981.03615995004500060022x
Subject(s) - nitrite , nitrate , chemistry , nitrous oxide , nitric oxide , nitrous acid , inorganic chemistry , microorganism , environmental chemistry , anaerobic exercise , nitrogen , bacteria , organic chemistry , biology , physiology , genetics
Recent work has shown that nitrate inhibits reduction of nitrous oxide (N 2 O) to dinitrogen (N 2 ) by soil microorganisms under anaerobic conditions. Studies to investigate the possibility that this inhibition is caused by nitrite or nitric oxide (NO) formed through microbial reduction of nitrate showed that both NO and nitrite inhibit reduction of N 2 O to N 2 by soil microorganisms under anaerobic conditions (helium atmosphere) but that the inhibitory effect of NO on N 2 O reduction is much smaller than the effects of nitrate or nitrite. Comparison of the effects of nitrate, nitrite, and mixtures of nitrate and nitrite on reduction of N 2 O to N 2 by soils incubated under He showed that nitrate per se inhibits N 2 O reduction and did not confirm a recent suggestion that the inhibitory effect of nitrate on N 2 O reduction is due to nitrite formed through microbial reduction of nitrate.