Details
| Original language | English |
|---|---|
| Pages (from-to) | 103-118 |
| Number of pages | 16 |
| Journal | Global change biology |
| Volume | 26 |
| Issue number | 1 |
| Early online date | 22 Oct 2019 |
| Publication status | Published - 3 Jan 2020 |
Abstract
Oxidation of ammonia to nitrite by bacteria and archaea is responsible for global emissions of nitrous oxide directly and indirectly through provision of nitrite and, after further oxidation, nitrate to denitrifiers. Their contributions to increasing N2 O emissions are greatest in terrestrial environments, due to the dramatic and continuing increases in use of ammonia-based fertilizers, which have been driven by requirement for increased food production, but which also provide a source of energy for ammonia oxidizers (AO), leading to an imbalance in the terrestrial nitrogen cycle. Direct N2 O production by AO results from several metabolic processes, sometimes combined with abiotic reactions. Physiological characteristics, including mechanisms for N2 O production, vary within and between ammonia-oxidizing archaea (AOA) and bacteria (AOB) and comammox bacteria and N2 O yield of AOB is higher than in the other two groups. There is also strong evidence for niche differentiation between AOA and AOB with respect to environmental conditions in natural and engineered environments. In particular, AOA are favored by low soil pH and AOA and AOB are, respectively, favored by low rates of ammonium supply, equivalent to application of slow-release fertilizer, or high rates of supply, equivalent to addition of high concentrations of inorganic ammonium or urea. These differences between AOA and AOB provide the potential for better fertilization strategies that could both increase fertilizer use efficiency and reduce N2 O emissions from agricultural soils. This article reviews research on the biochemistry, physiology and ecology of AO and discusses the consequences for AO communities subjected to different agricultural practices and the ways in which this knowledge, coupled with improved methods for characterizing communities, might lead to improved fertilizer use efficiency and mitigation of N2 O emissions.
Keywords
- Ammonia, Archaea, Nitrification, Nitrous Oxide, Oxidation-Reduction, Soil, Soil Microbiology, archaeal ammonia oxidizers, bacterial ammonia oxidizers, soil, marine, agriculture, nitrification, nitrous oxide emissions
ASJC Scopus subject areas
- Environmental Science(all)
- General Environmental Science
- Environmental Science(all)
- Global and Planetary Change
- Environmental Science(all)
- Ecology
- Environmental Science(all)
- Environmental Chemistry
Sustainable Development Goals
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In: Global change biology, Vol. 26, No. 1, 03.01.2020, p. 103-118.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Nitrous oxide production by ammonia oxidizers
T2 - Physiological diversity, niche differentiation and potential mitigation strategies
AU - Prosser, James I
AU - Hink, Linda
AU - Gubry-Rangin, Cécile
AU - Nicol, Graeme W
N1 - Funding Information: This work was financially supported by the AXA Research Fund (GWN), a Royal Society University Research Fellowship UF150571 (CGR) and all authors are members of the Nitrous Oxide Research Alliance (NORA), a Marie Skłodowska‐Curie ITN and research project under the EU's seventh framework programme (FP7).
PY - 2020/1/3
Y1 - 2020/1/3
N2 - Oxidation of ammonia to nitrite by bacteria and archaea is responsible for global emissions of nitrous oxide directly and indirectly through provision of nitrite and, after further oxidation, nitrate to denitrifiers. Their contributions to increasing N2 O emissions are greatest in terrestrial environments, due to the dramatic and continuing increases in use of ammonia-based fertilizers, which have been driven by requirement for increased food production, but which also provide a source of energy for ammonia oxidizers (AO), leading to an imbalance in the terrestrial nitrogen cycle. Direct N2 O production by AO results from several metabolic processes, sometimes combined with abiotic reactions. Physiological characteristics, including mechanisms for N2 O production, vary within and between ammonia-oxidizing archaea (AOA) and bacteria (AOB) and comammox bacteria and N2 O yield of AOB is higher than in the other two groups. There is also strong evidence for niche differentiation between AOA and AOB with respect to environmental conditions in natural and engineered environments. In particular, AOA are favored by low soil pH and AOA and AOB are, respectively, favored by low rates of ammonium supply, equivalent to application of slow-release fertilizer, or high rates of supply, equivalent to addition of high concentrations of inorganic ammonium or urea. These differences between AOA and AOB provide the potential for better fertilization strategies that could both increase fertilizer use efficiency and reduce N2 O emissions from agricultural soils. This article reviews research on the biochemistry, physiology and ecology of AO and discusses the consequences for AO communities subjected to different agricultural practices and the ways in which this knowledge, coupled with improved methods for characterizing communities, might lead to improved fertilizer use efficiency and mitigation of N2 O emissions.
AB - Oxidation of ammonia to nitrite by bacteria and archaea is responsible for global emissions of nitrous oxide directly and indirectly through provision of nitrite and, after further oxidation, nitrate to denitrifiers. Their contributions to increasing N2 O emissions are greatest in terrestrial environments, due to the dramatic and continuing increases in use of ammonia-based fertilizers, which have been driven by requirement for increased food production, but which also provide a source of energy for ammonia oxidizers (AO), leading to an imbalance in the terrestrial nitrogen cycle. Direct N2 O production by AO results from several metabolic processes, sometimes combined with abiotic reactions. Physiological characteristics, including mechanisms for N2 O production, vary within and between ammonia-oxidizing archaea (AOA) and bacteria (AOB) and comammox bacteria and N2 O yield of AOB is higher than in the other two groups. There is also strong evidence for niche differentiation between AOA and AOB with respect to environmental conditions in natural and engineered environments. In particular, AOA are favored by low soil pH and AOA and AOB are, respectively, favored by low rates of ammonium supply, equivalent to application of slow-release fertilizer, or high rates of supply, equivalent to addition of high concentrations of inorganic ammonium or urea. These differences between AOA and AOB provide the potential for better fertilization strategies that could both increase fertilizer use efficiency and reduce N2 O emissions from agricultural soils. This article reviews research on the biochemistry, physiology and ecology of AO and discusses the consequences for AO communities subjected to different agricultural practices and the ways in which this knowledge, coupled with improved methods for characterizing communities, might lead to improved fertilizer use efficiency and mitigation of N2 O emissions.
KW - Ammonia
KW - Archaea
KW - Nitrification
KW - Nitrous Oxide
KW - Oxidation-Reduction
KW - Soil
KW - Soil Microbiology
KW - archaeal ammonia oxidizers
KW - bacterial ammonia oxidizers
KW - soil
KW - marine
KW - agriculture
KW - nitrification
KW - nitrous oxide emissions
UR - http://www.scopus.com/inward/record.url?scp=85075725477&partnerID=8YFLogxK
U2 - 10.1111/gcb.14877
DO - 10.1111/gcb.14877
M3 - Article
C2 - 31638306
VL - 26
SP - 103
EP - 118
JO - Global change biology
JF - Global change biology
SN - 1354-1013
IS - 1
ER -