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Hashmi MLUR, Hamid Y, Usman M, Luo J, Khan S, Sheng T, Bano N, Bhatti T, Li T. Assessing the effectiveness of 3, 4-dimethylpyrazole phosphate (DMPP) inhibitor in mitigating N 2O emissions from contrasting Cd-contaminated soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:169105. [PMID: 38070566 DOI: 10.1016/j.scitotenv.2023.169105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 12/17/2023]
Abstract
Improving nitrogen use efficiency of chemical fertilizers is essential to mitigate the negative environmental impacts of nitrogen. Nitrification, the conversion of ammonium to nitrate via nitrite by soil microbes, is a prominent source of nitrogen loss in soil systems. The effectiveness of nitrification inhibitors in reducing nitrogen loss through inhibition of nitrification is well-documented, however, their efficacy in heavy metals-contaminated soils needs thorough investigations. The current study assessed the efficacy of nitrification inhibitor 3, 4-dimethylpyrazole phosphate (DMPP) in reducing nitrous oxide (N2O) emissions in cadmium (Cd) contaminated paddy and red soils under lab-controlled environment. Obtained results indicated the substantial reduction in N2O emissions with DMPP in paddy and red soil by 48 and 35 %, respectively. However, Cd contamination resulted in reduced efficacy of DMPP, thus decreased the N2O emissions by 36 and 25 % in paddy and red soil, respectively. It was found that addition of DMPP had a significant effect on the abundance of ammonia oxidizing bacteria (AOB) and archaea (AOA). Notably, the reduction in N2O emissions by DMPP varied with the abundance of AOB. Moreover, Cd pollution resulted in a significant (P < 0.05) reduction in the abundance of archaeal and bacterial amoA genes, as well as bacterial nirK, nirS, and nosZ genes. The combined treatment of Cd and DMPP had a detrimental impact on denitrifiers, thereby influencing the overall efficiency of DMPP. These findings provide novel insights into the application of DMPP to mitigate nitrification and its potential role in reducing N2O emissions in contaminated soils.
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Affiliation(s)
- Muhammad Laeeq Ur Rehman Hashmi
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yasir Hamid
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Muhammad Usman
- Université de Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR 6226, F-35000 Rennes, France
| | - Jipeng Luo
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Sangar Khan
- Department of Geography and Spatial Information Techniques, Ningbo University, Ningbo 315211, China
| | - Tang Sheng
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Nabila Bano
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; Pakistan Tobacco Board, Ministry of National Food Security and Research, Islamabad, Pakistan
| | | | - Tingqiang Li
- Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China.
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Fan X, Chen H, Yan G, Ye M, Yin C, Li T, Wakelin SA, Liang Y. Niche Differentiation Among Canonical Nitrifiers and N 2O Reducers Is Linked to Varying Effects of Nitrification Inhibitors DCD and DMPP in Two Arable Soils. MICROBIAL ECOLOGY 2023; 85:1434-1447. [PMID: 35420314 DOI: 10.1007/s00248-022-02006-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 03/29/2022] [Indexed: 05/10/2023]
Abstract
The efficacy of nitrification inhibitors (NIs) dicyandiamide (DCD) and 3,4-dimethylpyrazole phosphate (DMPP) varies with soil types. Understanding the microbial mechanisms for this variation may lead to better modelling of NI efficacy and therefore on-farm adoption. This study addressed the response patterns of mineral nitrogen, nitrous oxide (N2O) emission, abundances of N-cycling functional guilds and soil microbiota characteristics, in relation to urea application with or without DCD or DMPP in two arable soils (an alkaline and an acid soil). The inhibition of nitrification rate and N2O emission by NI application occurred by suppressing ammonia-oxidizing bacteria (AOB) abundances and increasing the abundances of nosZI-N2O reducers; however, abundances of ammonia-oxidizing archaea (AOA) were also stimulated with NIs-added in these two arable soils. DMPP generally had stronger inhibition efficiency than DCD, and both NIs' addition decreased Nitrobacter, while increased Nitrospira abundance only in alkaline soil. N2O emissions were positively correlated with AOB and negatively correlated with nosZI in both soils and AOA only in acid soil. Moreover, N2O emissions were also positively correlated with nirK-type denitrifiers in alkaline soil, and clade A comammox in acid soil. Amendment with DCD or DMPP altered soil microbiota community structure, but had minor effect on community composition. These results highlight a crucial role of the niche differentiation among canonical ammonia oxidizers (AOA/AOB), Nitrobacter and Nitrospira, as well as nosZI- and nosZII-N2O reducers in determining the varying efficacies of DCD and DMPP in different arable soils.
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Affiliation(s)
- Xiaoping Fan
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Hao Chen
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Guochao Yan
- Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, College of Agriculture and Food Science, Zhejiang Agriculture and Forestry University, Hangzhou, 311300, China
| | - Mujun Ye
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Chang Yin
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Tingqiang Li
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | | | - Yongchao Liang
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
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Das S, Wang W, Reeves S, Dalal RC, Dang YP, Gonzalez A, Kopittke PM. Non-target impacts of pesticides on soil N transformations, abundances of nitrifying and denitrifying genes, and nitrous oxide emissions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 844:157043. [PMID: 35779727 DOI: 10.1016/j.scitotenv.2022.157043] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 06/24/2022] [Accepted: 06/25/2022] [Indexed: 06/15/2023]
Abstract
Agriculture is the leading contributor to global nitrous oxide (N2O) emissions, mostly from soils. We examined the non-target impacts of four pesticides on N transformations, N cycling genes and N2O emissions from sugarcane-cropped soil. The pesticides, including a herbicide glyphosate (GLY), an insecticide imidacloprid (IMI), a fungicide methoxy ethyl mercuric chloride (MEMC) and a fumigant methyl isothiocyanate (MITC), were added to the soil and incubated in laboratory at 25 °C. The soil microcosms were maintained at two water contents, 55 % and 90 % water holding capacity (WHC), to simulate aerobic and partly anaerobic conditions, respectively. Half of the soil samples received an initial application of KNO3 and were then maintained at 90 % WHC for 38 d, whilst the other half received (NH4)2SO4 and were maintained at 55 % WHC for 28 d followed by 10 d at 90 % WHC to favour denitrification. Responses of individual functional genes involved in nitrification and denitrification to the pesticides and their relationships to N2O emissions varied with time and soil water. Overall, MITC had pronounced repressive effects on AOA and AOB amoA gene abundances and gross nitrification. Under 55 % WHC during the initial 28 d, N2O emissions were low for all treatments (≤62 μg N kg-1 soil). However, under 90 % WHC (either during the first 28 d or the increase in water content from 55 to 90 % WHC after 28 d) the cumulative N2O emissions increased markedly. Overall, under 90 % WHC the cumulative N2O emissions were 19 (control) to 79-fold (MITC) higher than under 55% WHC; with the highest emissions observed in the MITC treatment (3140 μg N kg-1 soil). This was associated with increases in gross nitrate consumption rates and abundances of denitrifying genes (nirK, nirS and qnorB). Therefore, to minimise N2O emissions, MITC should not be applied to field under wet conditions favouring denitrification.
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Affiliation(s)
- Shilpi Das
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD 4072, Australia; Science and Technology Division, Department of Environment and Science, GPO Box 2454, Brisbane, QLD 4001, Australia; Soil Science Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh 2202, Bangladesh.
| | - Weijin Wang
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD 4072, Australia; Science and Technology Division, Department of Environment and Science, GPO Box 2454, Brisbane, QLD 4001, Australia.
| | - Steven Reeves
- Science and Technology Division, Department of Environment and Science, GPO Box 2454, Brisbane, QLD 4001, Australia
| | - Ram C Dalal
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Yash P Dang
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Axayacatl Gonzalez
- Australian Institute of Bioengineering and Nanotechnology, St Lucia, QLD 4072, Australia
| | - Peter M Kopittke
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, QLD 4072, Australia
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De Notaris C, Abalos D, Mikkelsen MH, Olesen JE. Potential for the adoption of measures to reduce N 2O emissions from crop residues in Denmark. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 835:155510. [PMID: 35490810 DOI: 10.1016/j.scitotenv.2022.155510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 04/16/2022] [Accepted: 04/21/2022] [Indexed: 06/14/2023]
Abstract
Crop residues represent a climate change dilemma: they can promote carbon (C) sequestration, but they may also stimulate emissions of the powerful greenhouse gas nitrous oxide (N2O). Although there are crop residue management measures to reduce N2O emissions, N2O reductions achieved at national scale with these measures have been seldom studied, and how farmers' willingness to accept the measures constrains their potential remains largely unknown. Using Denmark as a case study, we combined a survey (completed by 592 farmers) and national data to assess the practical potential and obstacles for the successful implementation of management strategies to reduce N2O emissions from crop residues. Crop residue removal (particularly from vegetables and cover crops) and nitrification inhibitors were identified as effective in reducing N2O emissions from a biophysical perspective. If all aboveground crop residues from vegetables and cover crops were removed, N2O emissions could be reduced by 0.181 Gg N2ON, corresponding to 11% of the total N2O emissions from crop residues nationally. However, a low percentage of farmers would be willing to remove crop residues from the field, especially for vegetables and cover crops (25%), in connection to the possible short- to medium-term reduction in C sequestration. Similarly, use of nitrification inhibitors would reduce emissions by 0.247 Gg N2ON, corresponding to 15% of the total residue N2O emissions, and only 37% of all farmers would accept their use. Our results highlight that farmer' preferences for the adoption of measures can constrain the use of the few available effective mitigation options. Better knowledge dissemination and advisory services are crucial to address this challenge; farmers may be motivated to remove aboveground crop residues by highlighting the proportionally more important contribution of belowground residues to C sequestration, and that aboveground residues may have commercial value (biorefining, biogas, biofuel), although these options need further development.
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Affiliation(s)
| | - Diego Abalos
- Department of Agroecology, Aarhus University, Tjele, Denmark; iCLIMATE Interdisciplinary Centre for Climate Change, Aarhus University, Roskilde, Denmark
| | | | - Jørgen E Olesen
- Department of Agroecology, Aarhus University, Tjele, Denmark; iCLIMATE Interdisciplinary Centre for Climate Change, Aarhus University, Roskilde, Denmark
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Hu J, Richwine JD, Keyser PD, Yao F, Jagadamma S, DeBruyn JM. Urea fertilization and grass species alter microbial nitrogen cycling capacity and activity in a C 4 native grassland. PeerJ 2022; 10:e13874. [PMID: 35979477 PMCID: PMC9377331 DOI: 10.7717/peerj.13874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 07/19/2022] [Indexed: 01/18/2023] Open
Abstract
Soil microbial transformation of nitrogen (N) in nutrient-limited native C4 grasslands can be affected by N fertilization rate and C4 grass species. Here, we report in situ dynamics of the population size (gene copy abundances) and activity (transcript copy abundances) of five functional genes involved in soil N cycling (nifH, bacterial amoA, nirK, nirS, and nosZ) in a field experiment with two C4 grass species (switchgrass (Panicum virgatum) and big bluestem (Andropogon gerardii)) under three N fertilization rates (0, 67, and 202 kg N ha-1). Diazotroph (nifH) abundance and activity were not affected by N fertilization rate nor grass species. However, moderate and high N fertilization promoted population size and activity of ammonia oxidizing bacteria (AOB, quantified via amoA genes and transcripts) and nitrification potential. Moderate N fertilization increased abundances of nitrite-reducing bacterial genes (nirK and nirS) under switchgrass but decreased these genes under big bluestem. The activity of nitrous oxide reducing bacteria (nosZ transcripts) was also promoted by moderate N fertilization. In general, high N fertilization had a negative effect on N-cycling populations compared to moderate N addition. Compared to big bluestem, the soils planted with switchgrass had a greater population size of AOB and nitrite reducers. The significant interaction effects of sampling season, grass species, and N fertilization rate on N-cycling microbial community at genetic-level rather than transcriptional-level suggested the activity of N-cycling microbial communities may be driven by more complex environmental factors in native C4 grass systems, such as climatic and edaphic factors.
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Affiliation(s)
- Jialin Hu
- Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, TN, United States of America
| | - Jonathan D. Richwine
- Department of Forestry, Wildlife, and Fisheries, University of Tennessee, Knoxville, TN, United States of America
| | - Patrick D. Keyser
- Department of Forestry, Wildlife, and Fisheries, University of Tennessee, Knoxville, TN, United States of America
| | - Fei Yao
- Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, TN, United States of America
| | - Sindhu Jagadamma
- Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, TN, United States of America
| | - Jennifer M. DeBruyn
- Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, TN, United States of America
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Abalos D, Recous S, Butterbach-Bahl K, De Notaris C, Rittl TF, Topp CFE, Petersen SO, Hansen S, Bleken MA, Rees RM, Olesen JE. A review and meta-analysis of mitigation measures for nitrous oxide emissions from crop residues. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 828:154388. [PMID: 35276154 DOI: 10.1016/j.scitotenv.2022.154388] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 02/15/2022] [Accepted: 03/04/2022] [Indexed: 06/14/2023]
Abstract
Crop residues are of crucial importance to maintain or even increase soil carbon stocks and fertility, and thereby to address the global challenge of climate change mitigation. However, crop residues can also potentially stimulate emissions of the greenhouse gas nitrous oxide (N2O) from soils. A better understanding of how to mitigate N2O emissions due to crop residue management while promoting positive effects on soil carbon is needed to reconcile the opposing effects of crop residues on the greenhouse gas balance of agroecosystems. Here, we combine a literature review and a meta-analysis to identify and assess measures for mitigating N2O emissions due to crop residue application to agricultural fields. Our study shows that crop residue removal, shallow incorporation, incorporation of residues with C:N ratio > 30 and avoiding incorporation of residues from crops terminated at an immature physiological stage, are measures leading to significantly lower N2O emissions. Other practices such as incorporation timing and interactions with fertilisers are less conclusive. Several of the evaluated N2O mitigation measures implied negative side-effects on yield, soil organic carbon storage, nitrate leaching and/or ammonia volatilization. We identified additional strategies with potential to reduce crop residue N2O emissions without strong negative side-effects, which require further research. These are: a) treatment of crop residues before field application, e.g., conversion of residues into biochar or anaerobic digestate, b) co-application with nitrification inhibitors or N-immobilizing materials such as compost with a high C:N ratio, paper waste or sawdust, and c) use of residues obtained from crop mixtures. Our study provides a scientific basis to be developed over the coming years on how to increase the sustainability of agroecosystems though adequate crop residue management.
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Affiliation(s)
- Diego Abalos
- Department of Agroecology, iCLIMATE, Aarhus University, Blichers Alle 20, 8830 Tjele, Denmark.
| | - Sylvie Recous
- Université de Reims Champagne Ardenne, INRAE, FARE, UMR A 614, 51097 Reims, France
| | - Klaus Butterbach-Bahl
- Institute of Meteorology and Climate Research (IMK-IFU), Karlsruhe Institute of Technology, Garmisch-Partenkirchen 82467, Germany
| | - Chiara De Notaris
- Department of Agroecology, iCLIMATE, Aarhus University, Blichers Alle 20, 8830 Tjele, Denmark
| | - Tatiana F Rittl
- NORSØK-Norwegian Centre for Organic Agriculture, Gunnars veg 6, 6630 Tingvoll, Norway
| | - Cairistiona F E Topp
- Scotland's Rural College, Kings Buildings, West Mains Road, Edinburgh EH9 3JG, UK
| | - Søren O Petersen
- Department of Agroecology, iCLIMATE, Aarhus University, Blichers Alle 20, 8830 Tjele, Denmark
| | - Sissel Hansen
- NORSØK-Norwegian Centre for Organic Agriculture, Gunnars veg 6, 6630 Tingvoll, Norway
| | - Marina A Bleken
- Norwegian University of Life Sciences, Faculty of Environmental Sciences and Natural Resource Management, Elizabeth Stephensv. 13, 1433 Ås, Norway
| | - Robert M Rees
- Scotland's Rural College, Kings Buildings, West Mains Road, Edinburgh EH9 3JG, UK
| | - Jørgen E Olesen
- Department of Agroecology, iCLIMATE, Aarhus University, Blichers Alle 20, 8830 Tjele, Denmark
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Management Strategies to Mitigate N2O Emissions in Agriculture. Life (Basel) 2022; 12:life12030439. [PMID: 35330190 PMCID: PMC8949344 DOI: 10.3390/life12030439] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/03/2022] [Accepted: 03/07/2022] [Indexed: 12/25/2022] Open
Abstract
The concentration of greenhouse gases (GHGs) in the atmosphere has been increasing since the beginning of the industrial revolution. Nitrous oxide (N2O) is one of the mightiest GHGs, and agriculture is one of the main sources of N2O emissions. In this paper, we reviewed the mechanisms triggering N2O emissions and the role of agricultural practices in their mitigation. The amount of N2O produced from the soil through the combined processes of nitrification and denitrification is profoundly influenced by temperature, moisture, carbon, nitrogen and oxygen contents. These factors can be manipulated to a significant extent through field management practices, influencing N2O emission. The relationships between N2O occurrence and factors regulating it are an important premise for devising mitigation strategies. Here, we evaluated various options in the literature and found that N2O emissions can be effectively reduced by intervening on time and through the method of N supply (30–40%, with peaks up to 80%), tillage and irrigation practices (both in non-univocal way), use of amendments, such as biochar and lime (up to 80%), use of slow-release fertilizers and/or nitrification inhibitors (up to 50%), plant treatment with arbuscular mycorrhizal fungi (up to 75%), appropriate crop rotations and schemes (up to 50%), and integrated nutrient management (in a non-univocal way). In conclusion, acting on N supply (fertilizer type, dose, time, method, etc.) is the most straightforward way to achieve significant N2O reductions without compromising crop yields. However, tuning the rest of crop management (tillage, irrigation, rotation, etc.) to principles of good agricultural practices is also advisable, as it can fetch significant N2O abatement vs. the risk of unexpected rise, which can be incurred by unwary management.
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Hu J, Richwine JD, Keyser PD, Li L, Yao F, Jagadamma S, DeBruyn JM. Ammonia-oxidizing bacterial communities are affected by nitrogen fertilization and grass species in native C 4 grassland soils. PeerJ 2022; 9:e12592. [PMID: 35003922 PMCID: PMC8684740 DOI: 10.7717/peerj.12592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/12/2021] [Indexed: 11/20/2022] Open
Abstract
Background Fertilizer addition can contribute to nitrogen (N) losses from soil by affecting microbial populations responsible for nitrification. However, the effects of N fertilization on ammonia oxidizing bacteria under C4 perennial grasses in nutrient-poor grasslands are not well studied. Methods In this study, a field experiment was used to assess the effects of N fertilization rate (0, 67, and 202 kg N ha−1) and grass species (switchgrass (Panicum virgatum) and big bluestem (Andropogon gerardii)) on ammonia-oxidizing bacterial (AOB) communities in C4 grassland soils using quantitative PCR, quantitative reverse transcription-PCR, and high-throughput amplicon sequencing of amoA genes. Results Nitrosospira were dominant AOB in the C4 grassland soil throughout the growing season. N fertilization rate had a stronger influence on AOB community composition than C4 grass species. Elevated N fertilizer application increased the abundance, activity, and alpha-diversity of AOB communities as well as nitrification potential, nitrous oxide (N2O) emission and soil acidity. The abundance and species richness of AOB were higher under switchgrass compared to big bluestem. Soil pH, nitrate, nitrification potential, and N2O emission were significantly related to the variability in AOB community structures (p < 0.05).
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Affiliation(s)
- Jialin Hu
- Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, TN, United States of America
| | - Jonathan D Richwine
- Department of Forestry, Wildlife and Fisheries, University of Tennessee, Knoxville, TN, United States of America
| | - Patrick D Keyser
- Department of Forestry, Wildlife and Fisheries, University of Tennessee, Knoxville, TN, United States of America
| | - Lidong Li
- Agroecosystem Management Research Unit, USDA-Agricultural Research Service, Lincoln, NE, United States of America
| | - Fei Yao
- Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, TN, United States of America
| | - Sindhu Jagadamma
- Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, TN, United States of America
| | - Jennifer M DeBruyn
- Department of Biosystems Engineering and Soil Science, University of Tennessee, Knoxville, TN, United States of America
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Exploring Temperature-Related Effects in Catch Crop Net N Mineralization Outside of First-Order Kinetics. NITROGEN 2021. [DOI: 10.3390/nitrogen2020008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Catch crops are an effective method for reducing nitrogen (N) leaching in agriculture, but the mineralization of incorporated catch crop residue N is difficult to predict and model. We conducted a five-month incubation experiment using fresh residue from three catch crops (hairy vetch, fodder radish and ryegrass) with three temperature treatments (2 °C, 15 °C and 2–15 °C variable temperature) and two termination methods (glyphosate and untreated). Mineral N (ammonium and nitrate) in soil was quantified at 0, 1, 2, 4, 8 and 20 weeks of incubation. Ammonium accumulation from residue decomposition showed a lag at low and variable temperature, but subsequent nitrification of the ammonium did not. Mineral N accumulation over time changed from exponential to sigmoidal mode at low and variable temperature. Incubation temperature significantly affected mineralization rates in a first-order kinetics (FOK) model, while plant type and termination method did not. Plant type alone had a significant effect on the final mineralized fraction of added catch crop N. FOK models modified to accommodate an initial lag were fitted to the incubation results and produced better goodness-of-fit statistics than simple FOK. We suggest that initial lags in residue decomposition should be investigated for the benefit of mineralization predictions in cropping models.
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Corrochano-Monsalve M, González-Murua C, Bozal-Leorri A, Lezama L, Artetxe B. Mechanism of action of nitrification inhibitors based on dimethylpyrazole: A matter of chelation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 752:141885. [PMID: 32890835 DOI: 10.1016/j.scitotenv.2020.141885] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 08/19/2020] [Accepted: 08/20/2020] [Indexed: 05/25/2023]
Abstract
In agriculture, the applied nitrogen (N) can be lost in the environment in different forms because of microbial transformations. It is of special concern the nitrate (NO3-) leaching and the nitrous oxide (N2O) emissions, due to their negative environmental impacts. Nitrification inhibitors (NIs) based on dimethylpyrazole (DMP) are applied worldwide in order to reduce N losses. These compounds delay ammonium (NH4+) oxidation by inhibiting ammonia-oxidizing bacteria (AOB) growth. However, their mechanism of action has not been demonstrated, which represent an important lack of knowledge to use them correctly. In this work, through chemical and biological analysis, we unveil the mechanism of action of the commonly applied 3,4-dimethyl-1H-pyrazole dihydrogen phosphate (DMPP) and the new DMP-based NI, 2-(3,4-dimethyl-1H-pyrazol-1-yl)-succinic acid (DMPSA). Our results show that DMP and DMPSA form complexes with copper (Cu2+) cations, an indispensable cofactor in the nitrification pathway. Three coordination compounds namely [Cu(DMP)4Cl2] (CuDMP1), [Cu(DMP)4SO4]n (CuDMP2) and [Cu(DMPSA)2]·H2O (CuDMPSA) have been synthesized and chemical and structurally characterized. The CuDMPSA complex is more stable than those containing DMP ligands; however, both NIs show the same nitrification inhibition efficiency in soils with different Cu contents, suggesting that the active specie in both cases is DMP. Our soil experiment reveals that the usual application dose is enough to inhibit nitrification within the range of Cu and Zn contents present in agricultural soils, although their effects vary depending on the content of these elements. As a result of AOB inhibition by these NIs, N2O-reducing bacteria seem to be beneficed in Cu-limited soils due to a reduction in the competence. This opens up the possibility to induce N2O reduction to N2 through Cu fertilization. On the other hand, when fertilizing with micronutrients such as Cu and Zn, the use of NIs could be beneficial to counteract the increase of nitrification derived from their application.
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Affiliation(s)
- Mario Corrochano-Monsalve
- Department of Plant Biology and Ecology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain.
| | - Carmen González-Murua
- Department of Plant Biology and Ecology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Adrián Bozal-Leorri
- Department of Plant Biology and Ecology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Luis Lezama
- Department of Inorganic Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Beñat Artetxe
- Department of Inorganic Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain
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Kong X, Ying S, Yang L, Xin Y, Cai Z, Zhu S, Liu D. Microbial and isotopomer analysis of N 2O generation pathways in ammonia removal biofilters. CHEMOSPHERE 2020; 251:126357. [PMID: 32146187 DOI: 10.1016/j.chemosphere.2020.126357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/18/2020] [Accepted: 02/25/2020] [Indexed: 06/10/2023]
Abstract
Ammonia removal biofilters can be a potential source of nitrous oxide (N2O) production as a result of microbial nitrification and denitrification. In this study, these two N2O generation pathways was quantified using isotopic site preference values (SP, 33‰ for nitrification and 0‰ for denitrification) in a 204-d operation. Tests with two moisture conditions (45% and 55%) and three inlet NH3 concentrations (35, 18 and 0 ppmv) were performed. A 55+% NH3 removal efficiency was achieved in biofilters with 35 and 18 ppmv ammonia supply, but no significant difference (p > 0.05) was found between the moisture treatments. Results showed that biofilters were clearly net sources of N2O, and biofilters with higher moisture content generated significantly (p < 0.05) higher N2O concentration. The N2O generation did not stop even after the biofilters were terminated. The percentage of inlet NH3-N converted into N2O-N were 5.2%, 8.5% for biofilters with 45% moisture content, and 14.8%, 10.8% for those with 55% moisture content. Gene abundance of amoA and nosZ in packing materials (taken on days 64, 107, 140, 180 and 204) increased due to NH3 input reaching the highest on day 140 and then decreased in response to reduced NH3 supply on day 180 and 204. The changes of SP values suggested a shift between nitrification and denitrification with regard to N2O generation. Overall, the nitrification was the dominant pathway for N2O generation, but uncertainty exits as well. This study confirmed that NH3-loaded biofilters were net sources of N2O, and use of SP-N2O may be helpful in better understanding the processes responsible for such emissions.
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Affiliation(s)
- Xianwang Kong
- College of Biosystems Engineering and Food Science, Zhejiang University, China
| | - Shihao Ying
- College of Biosystems Engineering and Food Science, Zhejiang University, China
| | - Liangcheng Yang
- Department of Health Sciences Environmental Health Program, Illinois State University, USA.
| | - Yicong Xin
- College of Biosystems Engineering and Food Science, Zhejiang University, China
| | - Zhen Cai
- College of Biosystems Engineering and Food Science, Zhejiang University, China
| | - Songming Zhu
- College of Biosystems Engineering and Food Science, Zhejiang University, China
| | - Dezhao Liu
- College of Biosystems Engineering and Food Science, Zhejiang University, China.
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12
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Corrochano-Monsalve M, Huérfano X, Menéndez S, Torralbo F, Fuertes-Mendizábal T, Estavillo JM, González-Murua C. Relationship between tillage management and DMPSA nitrification inhibitor efficiency. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 718:134748. [PMID: 31848057 DOI: 10.1016/j.scitotenv.2019.134748] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/15/2019] [Accepted: 09/29/2019] [Indexed: 05/25/2023]
Abstract
Agricultural sustainability is compromised by nitrogen (N) losses caused by soil microbial activity. Nitrous oxide (N2O) is a potent greenhouse gas (GHG) produced as consequence of nitrification and denitrification processes in soils. Nitrification inhibitors (NI) as 3,4-dimethylpyrazole-succinic acid (DMPSA) are useful tools to reduce these N losses from fertilization. The objective of this work was to test the efficiency of DMPSA in two different tillage management systems, conventional tillage (CT) and no-tillage (NT), in a winter wheat crop under Humid Mediterranean conditions. N fertilizer was applied as ammonium sulphate (AS) with or without DMPSA in a single or split application, including an unfertilized treatment. GHG fluxes (N2O, CO2 and CH4) were measured by the closed chamber method. amoA and nosZI genes were quantified by qPCR as indicators of nitrifying and denitrifying populations. Nitrification was inhibited by DMPSA in both CT and NT, while the higher water filled pore space (WFPS) in NT promoted a better efficiency of DMPSA in this system. This higher efficiency might be due to a greater N2O reduction to N2 as result of the nosZI gene induction. Consequently, DMPSA was able to reduce N2O emissions down to the unfertilized levels in NT. Provided that NT reduced CO2 emissions and maintained crop yield compared to CT, the application DMPSA under NT management is a promising strategy to increase agro-systems sustainability under Humid Mediterranean conditions.
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Affiliation(s)
- Mario Corrochano-Monsalve
- Department of Plant Biology and Ecology, University of the Basque Country-UPV/EHU, Apdo. 644, Bilbao E-48080, Spain.
| | - Ximena Huérfano
- Department of Plant Biology and Ecology, University of the Basque Country-UPV/EHU, Apdo. 644, Bilbao E-48080, Spain
| | - Sergio Menéndez
- Department of Plant Biology and Ecology, University of the Basque Country-UPV/EHU, Apdo. 644, Bilbao E-48080, Spain; Eurochem Agro Iberia S.L. C/ Tánger 98-Esc B, 8° planta, Barcelona 08018, Spain
| | - Fernando Torralbo
- Department of Plant Biology and Ecology, University of the Basque Country-UPV/EHU, Apdo. 644, Bilbao E-48080, Spain; Division of Plant Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Teresa Fuertes-Mendizábal
- Department of Plant Biology and Ecology, University of the Basque Country-UPV/EHU, Apdo. 644, Bilbao E-48080, Spain
| | - José-María Estavillo
- Department of Plant Biology and Ecology, University of the Basque Country-UPV/EHU, Apdo. 644, Bilbao E-48080, Spain
| | - Carmen González-Murua
- Department of Plant Biology and Ecology, University of the Basque Country-UPV/EHU, Apdo. 644, Bilbao E-48080, Spain
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13
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Nair D, Baral KR, Abalos D, Strobel BW, Petersen SO. Nitrate leaching and nitrous oxide emissions from maize after grass-clover on a coarse sandy soil: Mitigation potentials of 3,4-dimethylpyrazole phosphate (DMPP). JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 260:110165. [PMID: 32090850 DOI: 10.1016/j.jenvman.2020.110165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 01/10/2020] [Accepted: 01/18/2020] [Indexed: 06/10/2023]
Abstract
Cropping of maize (Zea mays L.) on sandy soil in wet climates involves a significant risk for nitrogen (N) losses, since nitrate added in fertilizers or produced from residues and manure may be lost outside the period with active crop N uptake. This one-year lysimeter experiment investigated the potential of Vizura®, a formulation for liquid manure (slurry) with the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP), to mitigate nitrous oxide (N2O) emissions and nitrate (NO3-) leaching from a coarse sandy soil cropped with maize. Maize followed grass-clover (Lolium perenne L.-Trifolium pratense L.) with spring incorporation and was fertilised with cattle slurry. A total of 12 treatments in triplicate were included in a factorial experiment with 1 m2 large and 1.4 m deep lysimeters: 1) with or without spraying the above-ground biomass of grass-clover with DMPP before incorporation; 2) application of cattle manure with or without DMPP, or no fertilization; and 3) natural rainfall or extra rain events to represent wet spring conditions, which were simulated with an automated and programmable irrigation system. Around 20 kg N ha-1 was returned to the soil in grass-clover above-ground biomass, and 145 kg N ha-1 in cattle manure. Cumulative annual N2O emissions ranged from 0.4 to 1.3 kg N ha-1, with between 49 and 86% of emissions occurring during spring. Manure application increased N2O emissions, while extra rainfall had no effect. The mitigation of N2O emissions by DMPP ranged from 46 to 67% under natural, and from 44 to 48% under high rainfall conditions. Total annual NO3- leaching ranged from 65 to 162 kg N ha-1. The extent of NO3- leaching to 1.4 m depth during spring was low, and instead most (72-83%) of total annual NO3--N leaching was recorded during autumn before harvest. The extra rainfall during spring increased NO3--N leaching in the pre-harvest period, but it is not clear to what extent this was associated with the N in grass-clover residues or manure applied in spring, or from N mineralisation below the root zone. Despite evidence for a reduction of NO3- leaching in three of four scenarios, overall this effect was not significant. No DMPP was detected in leachates. In conclusion, DMPP significantly reduced N2O emissions from cattle manure on this sandy loam soil independent of rainfall, while there was no significant effect on NO3- leaching. The results indicate that N2O emissions and NO3--N leaching were partly derived from below-ground sources of N not affected by DMPP, which should be further investigated to better predict the mitigation potential of nitrification inhibitors.
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Affiliation(s)
- Drishya Nair
- Department of Agroecology, Aarhus University, Tjele, Denmark.
| | | | - Diego Abalos
- Department of Agroecology, Aarhus University, Tjele, Denmark
| | - Bjarne W Strobel
- Department of Plant and Environmental Sciences, University of Copenhagen, Denmark
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14
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Chen H, Yin C, Fan X, Ye M, Peng H, Li T, Zhao Y, Wakelin SA, Chu G, Liang Y. Reduction of N 2O emission by biochar and/or 3,4-dimethylpyrazole phosphate (DMPP) is closely linked to soil ammonia oxidizing bacteria and nosZI-N 2O reducer populations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 694:133658. [PMID: 31398644 DOI: 10.1016/j.scitotenv.2019.133658] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/25/2019] [Accepted: 07/28/2019] [Indexed: 04/14/2023]
Abstract
Biochar has been demonstrated to reduce nitrous oxide (N2O) emissions from soils, but its effect is highly soil-dependent. In particular, in soils with strong nitrification potential, biochar addition may increase N2O emissions. Thus, in soils with strong nitrification potential, the combination of biochar with the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) may be more effective in reducing N2O emissions than biochar alone. However, the combined use of biochar and DMPP on soil N2O emissions is relatively unexplored, and underlying microbial mechanisms of how biochar and/or DMPP amendment affect N2O emissions is still largely unknown. Here, a 30-day incubation experiment was established with four treatments: CK (control), BC (biochar), DMPP, and BD (biochar and DMPP), all at agronomically recommended rates, and N cycling assessed following addition of urea. Treatment of soil with BC, DMPP and BD reduced N2O emissions (compared with urea alone) by 59.1%, 95.5% and 74.1%, respectively. Quantification of N cycling genes (amoA, nirS, nirK, and nosZ) indicated that biochar stimulated growth of ammonia oxidizing archaea (AOA) and bacteria (AOB), while DMPP alone inhibited the activity and growth of AOB. In the BD treatment, DMPP was absorbed onto biochar reducing its efficacy in inhibiting AOB growth. The response patterns of nirS/nirK nitrite-reducing denitrifiers to biochar and/or DMPP addition varied among clades. Notably, biochar and/or DMPP increased the abundance of nosZI and nosZII-N2O reducers, but nosZI-clade taxa were more closely associated with reducing N2O emission than nosZII taxa. Overall, our findings proved that the dynamics of AOB and nosZI-N2O reducers resulting from the addition of biochar and/or DMPP played a key role in governing soil N2O emissions.
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Affiliation(s)
- Hao Chen
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Chang Yin
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xiaoping Fan
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Mujun Ye
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Hongyun Peng
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Tingqiang Li
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yuhua Zhao
- College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | | | - Guixin Chu
- College of Life Sciences, Shaoxing University, Shaoxing 312000, China
| | - Yongchao Liang
- Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China.
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15
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Fuertes-Mendizábal T, Huérfano X, Vega-Mas I, Torralbo F, Menéndez S, Ippolito JA, Kammann C, Wrage-Mönnig N, Cayuela ML, Borchard N, Spokas K, Novak J, González-Moro MB, González-Murua C, Estavillo JM. Biochar reduces the efficiency of nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) mitigating N 2O emissions. Sci Rep 2019; 9:2346. [PMID: 30787323 PMCID: PMC6382844 DOI: 10.1038/s41598-019-38697-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 01/07/2019] [Indexed: 11/21/2022] Open
Abstract
Among strategies suggested to decrease agricultural soil N2O losses, the use of nitrification inhibitors such as DMPP (3,4-dimethylpyrazole phosphate) has been proposed. However, the efficiency of DMPP might be affected by soil amendments, such as biochar, which has been shown to reduce N2O emissions. This study evaluated the synergic effect of a woody biochar applied with DMPP on soil N2O emissions. A incubation study was conducted with a silt loam soil and a biochar obtained from Pinus taeda at 500 °C. Two biochar rates (0 and 2% (w/w)) and three different nitrogen treatments (unfertilized, fertilized and fertilized + DMPP) were assayed under two contrasting soil water content levels (40% and 80% of water filled pore space (WFPS)) over a 163 day incubation period. Results showed that DMPP reduced N2O emissions by reducing ammonia-oxidizing bacteria (AOB) populations and promoting the last step of denitrification (measured by the ratio nosZI + nosZII/nirS + nirK genes). Biochar mitigated N2O emissions only at 40% WFPS due to a reduction in AOB population. However, when DMPP was applied to the biochar amended soil, a counteracting effect was observed, since the N2O mitigation induced by DMPP was lower than in control soil, demonstrating that this biochar diminishes the efficiency of the DMPP both at low and high soil water contents.
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Affiliation(s)
- T Fuertes-Mendizábal
- University of the Basque Country (UPV/EHU), Department of Plant Biology and Ecology, Apdo. 644, E-48080, Bilbao, Spain.
| | - X Huérfano
- University of the Basque Country (UPV/EHU), Department of Plant Biology and Ecology, Apdo. 644, E-48080, Bilbao, Spain
| | - I Vega-Mas
- University of the Basque Country (UPV/EHU), Department of Plant Biology and Ecology, Apdo. 644, E-48080, Bilbao, Spain
| | - F Torralbo
- University of the Basque Country (UPV/EHU), Department of Plant Biology and Ecology, Apdo. 644, E-48080, Bilbao, Spain
| | - S Menéndez
- University of the Basque Country (UPV/EHU), Department of Plant Biology and Ecology, Apdo. 644, E-48080, Bilbao, Spain
| | - J A Ippolito
- Department of Soil and Crop Sciences, C127 Plant Sciences Building, Colorado State University, Fort Collins, CO, 80523-1170, USA
| | - C Kammann
- Geisenheim University, Department of Applied Ecology, Von-Lade-Straße 1, 65366, Geisenheim, Germany
| | - N Wrage-Mönnig
- University of Rostock, Faculty of Agricultural and Environmental Sciences, Grassland and Fodder Sciences, Justus-von-Liebig-Weg 6, 18059, Rostock, Germany
| | - M L Cayuela
- Department of Soil and Water Conservation and Waste Management, CEBAS-CSIC. Campus Universitario de Espinardo, 30100, Murcia, Spain
| | - N Borchard
- Institute of Geography, Soil Science/Soil Ecology, Ruhr-University Bochum, Universitätsstrasse 150, 44801, Bochum, Germany.,Plant Production, Natural Resources Institute Finland (Luke), 00790, Helsinki, Finland
| | - K Spokas
- United States Department of Agriculture, Agriculture Research Service, Soil & Water Management Research Unit, 439 Borlaug Hall, 1991 Buford Circle, University of Minnesota, St. Paul, Minnesota, 55108, USA
| | - J Novak
- United States Department of Agriculture, Agriculture Research Service, Coastal Plains Research Center, 2611 West Lucas Street, Florence, SC, 29501, USA
| | - M B González-Moro
- University of the Basque Country (UPV/EHU), Department of Plant Biology and Ecology, Apdo. 644, E-48080, Bilbao, Spain
| | - C González-Murua
- University of the Basque Country (UPV/EHU), Department of Plant Biology and Ecology, Apdo. 644, E-48080, Bilbao, Spain
| | - J M Estavillo
- University of the Basque Country (UPV/EHU), Department of Plant Biology and Ecology, Apdo. 644, E-48080, Bilbao, Spain
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16
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Nakagawa T, Tsuchiya Y, Ueda S, Fukui M, Takahashi R. Eelgrass Sediment Microbiome as a Nitrous Oxide Sink in Brackish Lake Akkeshi, Japan. Microbes Environ 2018; 34:13-22. [PMID: 30504642 PMCID: PMC6440730 DOI: 10.1264/jsme2.me18103] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Nitrous oxide (N2O) is a powerful greenhouse gas; however, limited information is currently available on the microbiomes involved in its sink and source in seagrass meadow sediments. Using laboratory incubations, a quantitative PCR (qPCR) analysis of N2O reductase (nosZ) and ammonia monooxygenase subunit A (amoA) genes, and a metagenome analysis based on the nosZ gene, we investigated the abundance of N2O-reducing microorganisms and ammonia-oxidizing prokaryotes as well as the community compositions of N2O-reducing microorganisms in in situ and cultivated sediments in the non-eelgrass and eelgrass zones of Lake Akkeshi, Japan. Laboratory incubations showed that N2O was reduced by eelgrass sediments and emitted by non-eelgrass sediments. qPCR analyses revealed that the abundance of nosZ gene clade II in both sediments before and after the incubation as higher in the eelgrass zone than in the non-eelgrass zone. In contrast, the abundance of ammonia-oxidizing archaeal amoA genes increased after incubations in the non-eelgrass zone only. Metagenome analyses of nosZ genes revealed that the lineages Dechloromonas-Magnetospirillum-Thiocapsa and Bacteroidetes (Flavobacteriia) within nosZ gene clade II were the main populations in the N2O-reducing microbiome in the in situ sediments of eelgrass zones. Sulfur-oxidizing Gammaproteobacteria within nosZ gene clade II dominated in the lineage Dechloromonas-Magnetospirillum-Thiocapsa. Alphaproteobacteria within nosZ gene clade I were predominant in both zones. The proportions of Epsilonproteobacteria within nosZ gene clade II increased after incubations in the eelgrass zone microcosm supplemented with N2O only. Collectively, these results suggest that the N2O-reducing microbiome in eelgrass meadows is largely responsible for coastal N2O mitigation.
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Affiliation(s)
| | | | - Shingo Ueda
- College of Bioresource Sciences, Nihon University
| | - Manabu Fukui
- Institute of Low Temperature Science, Hokkaido University
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17
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Duan YF, Hallin S, Jones CM, Priemé A, Labouriau R, Petersen SO. Catch Crop Residues Stimulate N 2O Emissions During Spring, Without Affecting the Genetic Potential for Nitrite and N 2O Reduction. Front Microbiol 2018; 9:2629. [PMID: 30450089 PMCID: PMC6225543 DOI: 10.3389/fmicb.2018.02629] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 10/15/2018] [Indexed: 01/27/2023] Open
Abstract
Agricultural soils are a significant source of anthropogenic nitrous oxide (N2O) emissions, because of fertilizer application and decomposition of crop residues. We studied interactions between nitrogen (N) amendments and soil conditions in a 2-year field experiment with or without catch crop incorporation before seeding of spring barley, and with or without application of N in the form of digested liquid manure or mineral N fertilizer. Weather conditions, soil inorganic N dynamics, and N2O emissions were monitored during spring, and soil samples were analyzed for abundances of nitrite reduction (nirK and nirS) and N2O reduction genes (nosZ clade I and II), and structure of nitrite- and N2O-reducing communities. Fertilization significantly enhanced soil mineral N accumulation compared to treatments with catch crop residues as the only N source. Nitrous oxide emissions, in contrast, were stimulated in rotations with catch crop residue incorporation, probably as a result of concurrent net N mineralization, and O2 depletion associated with residue degradation in organic hotspots. Emissions of N2O from digested manure were low in both years, while emissions from mineral N fertilizer were nearly absent in the first year, but comparable to emissions from catch crop residues in the second year with higher precipitation and delayed plant N uptake. Higher gene abundances, as well as shifts in community structure, were also observed in the second year, which were significantly correlated to NO3- availability. Both the size and structure of the nitrite- and N2O-reducing communities correlated to the difference in N2O emissions between years, while there were no consistent effects of management as represented by catch crops or fertilization. It is concluded that N2O emissions were constrained by environmental, rather than the genetic potential for nitrite and N2O reduction.
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Affiliation(s)
- Yun-Feng Duan
- Department of Agroecology, Aarhus University, Tjele, Denmark
| | - Sara Hallin
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Christopher M Jones
- Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Anders Priemé
- Section of Microbiology, Department of Biology, University of Copenhagen, Copenhagen, Denmark
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18
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Zhou ZF, Zhang ZY, Wang MX, Liu YM, Dai JS. Effect of the nitrification inhibitor (3, 4-dimethylpyrazole phosphate) on the activities and abundances of ammonia-oxidizers and denitrifiers in a phenanthrene polluted and waterlogged soil. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 161:474-481. [PMID: 29909317 DOI: 10.1016/j.ecoenv.2018.06.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 05/09/2018] [Accepted: 06/10/2018] [Indexed: 06/08/2023]
Abstract
Through a 60-day microcosm incubation, the effect of 3, 4-dimethylpyrazole phosphate (DMPP) on the activities and abundances of ammonia-oxidizers and denitrifiers in phenanthrene-polluted soil was investigated. Five treatments were conducted for clean soil (CK), phenanthrene added (P), phenanthrene and DMPP added (PD), phenanthrene and urea added (PU), and phenanthrene, urea, and DMPP added (PUD) soils. The results indicate that the potential nitrification rate (PNR) in the P treatment was significantly higher than that in the PD treatment only on day 7, whereas the PNR in the PU treatment was significantly higher than that in the PUD treatment on each sampling day. The abundance of soil ammonia-oxidizing bacteria (AOB) in the PU treatment was significantly higher than that in the PUD treatment on each sampling day. Moreover, the abundance of AOB but rather than the ammonia-oxidizing archaea (AOA) had significantly positive correlation with soil PNR (P < 0.05). DMPP showed no obvious effect on the soil denitrification enzyme activity (DEA), which could have inhibited the abundances of denitrification-related narG, nirS, and nirK genes. The results of this study should provide a deeper understanding of the interaction between soil polycyclic aromatic hydrocarbons (PAH) contamination, ammonia oxidization, and denitrification, and offer valuable information for assessing the potential contribution of denitrification for soil PAH elimination.
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Affiliation(s)
- Zhi-Feng Zhou
- College of Resources and Environment, Southwest University, Chongqing 400716, China.
| | - Ze-Yu Zhang
- College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Ming-Xia Wang
- College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Ya-Min Liu
- College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Jun-Shuai Dai
- College of Resources and Environment, Southwest University, Chongqing 400716, China
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19
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Torralbo F, Menéndez S, Barrena I, Estavillo JM, Marino D, González-Murua C. Dimethyl pyrazol-based nitrification inhibitors effect on nitrifying and denitrifying bacteria to mitigate N 2O emission. Sci Rep 2017; 7:13810. [PMID: 29062007 PMCID: PMC5653738 DOI: 10.1038/s41598-017-14225-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 10/06/2017] [Indexed: 11/09/2022] Open
Abstract
Nitrous oxide (N2O) emissions have been increasing as a result of intensive nitrogen (N) fertilisation. Soil nitrification and denitrification are the main sources of N2O, and the use of ammonium-based fertilisers combined with nitrification inhibitors (NIs) could be useful in mitigating N2O emissions from agricultural systems. In this work we looked at the N2O mitigation capacity of two dimethylpyrazol-based NIs, 3,4-dimethylpyrazole phosphate (DMPP) and 2-(N-3,4-dimethyl-1H-pyrazol-1-yl) succinic acid isomeric mixture (DMPSA), on soil nitrifying and denitrifying microbial populations under two contrasting soil water contents (40% and 80% soil water filled pore space; WFPS). Our results show that DMPP and DMPSA are equally efficient at reducing N2O emissions under 40% WFPS conditions by inhibiting bacterial ammonia oxidation. In contrast, at 80% WFPS DMPSA was less efficient than DMPP at reducing N2O emissions. Interestingly, at 80% WFPS, where lowered oxygen availability limits nitrification, both DMPP and DMPSA not only inhibited nitrification but also stimulated N2O reduction to molecular nitrogen (N2) via nitrous oxide reductase activity (Nos activity). Therefore, in this work we observed that DMP-based NIs stimulated the reduction of N2O to N2 by nitrous oxide reductase during the denitrification process.
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Affiliation(s)
- Fernando Torralbo
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Bilbao, Spain.
| | - Sergio Menéndez
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Bilbao, Spain
| | - Iskander Barrena
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Bilbao, Spain
| | - José M Estavillo
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Bilbao, Spain
| | - Daniel Marino
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Bilbao, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Carmen González-Murua
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Bilbao, Spain
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Shi X, Hu HW, Zhu-Barker X, Hayden H, Wang J, Suter H, Chen D, He JZ. Nitrifier-induced denitrification is an important source of soil nitrous oxide and can be inhibited by a nitrification inhibitor 3,4-dimethylpyrazole phosphate. Environ Microbiol 2017; 19:4851-4865. [DOI: 10.1111/1462-2920.13872] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 07/24/2017] [Indexed: 02/03/2023]
Affiliation(s)
- Xiuzhen Shi
- Faculty of Veterinary and Agricultural Sciences; The University of Melbourne; Parkville Victoria 3010 Australia
| | - Hang-Wei Hu
- Faculty of Veterinary and Agricultural Sciences; The University of Melbourne; Parkville Victoria 3010 Australia
| | - Xia Zhu-Barker
- Biogeochemistry and Nutrient Cycling Laboratory, Department of Land, Air and Water Resources; University of California; Davis CA 95616 USA
| | - Helen Hayden
- Department of Economic Development; Jobs, Transport and Resources, AgriBio, 5 Ring Rd; Bundoora Victoria 3083 Australia
| | - Juntao Wang
- State Key Laboratory of Urban and Regional Ecology, Research Centre for Eco-environmental Sciences; Chinese Academy of Sciences; Beijing 100085 China
| | - Helen Suter
- Faculty of Veterinary and Agricultural Sciences; The University of Melbourne; Parkville Victoria 3010 Australia
| | - Deli Chen
- Faculty of Veterinary and Agricultural Sciences; The University of Melbourne; Parkville Victoria 3010 Australia
| | - Ji-Zheng He
- Faculty of Veterinary and Agricultural Sciences; The University of Melbourne; Parkville Victoria 3010 Australia
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