反硝化细菌
一氧化二氮
反硝化
温室气体
化学
氮气
一氧化氮
环境化学
经济短缺
硝酸盐
氮气循环
生物
生态学
有机化学
语言学
哲学
政府(语言学)
作者
David J. Richardson,Heather Felgate,Nicholas J. Watmough,Andrew Thomson,Elizabeth M. Baggs
标识
DOI:10.1016/j.tibtech.2009.03.009
摘要
When faced with a shortage of oxygen, many bacterial species use nitrate to support respiration via the process of denitrification. This takes place extensively in nitrogen-rich soils and generates the gaseous products nitric oxide (NO), nitrous oxide (N(2)O) and dinitrogen (N(2)). The denitrifying bacteria protect themselves from the endogenous cytotoxic NO produced by converting it to N(2)O, which can be released into the atmosphere. However, N(2)O is a potent greenhouse gas and hence the activity of the enzyme that breaks down N(2)O has a crucial role in restricting its atmospheric levels. Here, we review the current understanding of the process by which N(2)O is produced and destroyed and discuss the potential for feeding this into new approaches for combating N(2)O release.
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