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Sweeney CJ, Bottoms M, Schulz L. Soil-specific outcomes in the OECD 216 Nitrogen Transformation Test. INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT 2024; 20:1611-1624. [PMID: 38483089 DOI: 10.1002/ieam.4913] [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: 10/11/2023] [Revised: 02/19/2024] [Accepted: 02/21/2024] [Indexed: 08/13/2024]
Abstract
The Organisation for Economic Co-operation and Development (OECD) 216 test guideline investigates the impact of agrochemicals on soil nitrogen transformation. After an evaluation of 465 OECD 216 studies, we describe two distinct yet contrasting outcomes in control nontreated samples that are possible in this testing framework, which we term the "rise" (consistent increases in nitrate concentrations throughout the test period) and "dip" (initial decline in nitrate concentration between Days 0-7, followed by a net-generation of nitrate across Days 7-28) responses. We raise significant concerns that control data from standardized, internationally recognized test guidelines can demonstrate such dissimilar patterns. We propose that, when present, the dip response undermines the intended functioning of the test system and removes the ability to draw appropriate ecotoxicological inferences from the data. In this work, we hypothesize the dip response is a product of conducting the study in low nitrogen content soils. Our results indicate that the dip response can be alleviated by using ammonium sulfate as an immediately available inorganic nitrogen source in place of the guideline-mandated complex, organic lucerne meal, demonstrating the influence of nitrogen availability and accessibility. However, not all low nitrogen soils exhibited the dip response, indicating the involvement of additional unidentified factors. Using our data and real-world regulatory examples, we advocate that datasets displaying the dip response should not be considered valid OECD 216 studies due to the influence of soil properties precluding an assessment of whether any impacts observed are driven solely by the test compound in question or are instead a product of the soil used. We propose methods to account for these soil-specific responses that could be integrated into the conduct and interpretation of OECD 216 studies. Such amendments will improve the reliability and robustness of the study system and enhance confidence in ecotoxicological conclusions derived from OECD 216 datasets. Integr Environ Assess Manag 2024;20:1611-1624. © 2024 SETAC.
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Affiliation(s)
| | - Melanie Bottoms
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, UK
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Cui K, Wang Y, Zhang X, Zhang X, Zhang X, Li Y, Shi W, Xie X. Archaeal communities change responding to anthropogenic and natural treatments of freeze-thawed soils. ENVIRONMENTAL RESEARCH 2024; 255:119150. [PMID: 38763282 DOI: 10.1016/j.envres.2024.119150] [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: 03/20/2024] [Revised: 05/10/2024] [Accepted: 05/14/2024] [Indexed: 05/21/2024]
Abstract
The coverage of accumulated snow plays a significant role in inducing changes in both microbial activity and environmental factors within freeze-thaw soil systems. This study aimed to analyze the impact of snow cover on the dynamics of archeal communities in freeze-thaw soil. Furthermore, it seeks to investigate the role of fertilization in freeze-thaw soil. Four treatments were established based on snow cover and fertilization:No snow and no fertilizer (CK-N), snow cover without fertilizer (X-N), fertilizer without snow cover (T-N), and both fertilizer and snow cover (T-X). The research findings indicated that after snow cover treatment, the carbon, nitrogen, and phosphorus content in freeze-thaw soil exhibit periodic fluctuations. Snow covered effectively altered the community composition of bacteria and archaea in the soil, with a greater impact on archaeal communities than on bacterial communities. Snow covered improves the stability of archaeal communities in freeze-thaw soil. Additionally, the arrival of snow also enhanced the correlation between archaea and environmental factors, with the key archaeal phyla involved being Nanoarchaeota and Crenarchaeota. Further research showed that the application of organic fertilizers also had some impact on freeze-thaw soil, but this impact was smaller compared to snow cover. In summary, the arrival of snow could alter the archaeal community and protect nutrient elements in freeze-thaw soil, reducing their loss, and its effect is more pronounced compared to the application of organic fertilizers.
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Affiliation(s)
- Kunxue Cui
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China
| | - Yumeng Wang
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China
| | - Xiaoxu Zhang
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China
| | - Xu Zhang
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China.
| | - Xinlin Zhang
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China
| | - Yu Li
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China
| | - Wenjing Shi
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China
| | - Xinyu Xie
- College of Life Science, Northeast Agricultural University, Harbin, 150030, China
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Liu X, Sun D, Huang H, Zhang J, Zheng H, Jia Q, Zhao M. Rice-fish coculture without phosphorus addition improves paddy soil nitrogen availability by shaping ammonia-oxidizing archaea and bacteria in subtropical regions of South China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:171642. [PMID: 38479518 DOI: 10.1016/j.scitotenv.2024.171642] [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: 10/09/2023] [Revised: 03/08/2024] [Accepted: 03/09/2024] [Indexed: 04/16/2024]
Abstract
Rice-fish coculture (RFC), as a traditional agricultural strategy in China, can optimally utilize the scarce resource, especially in subtropical regions where phosphorus (P) deficiency limits agricultural production. However, ammonia-oxidizing archaea (AOA) and bacteria (AOB) are involved in the ammonia oxidation, but it remains uncertain whether their community compositions are related to the RFC combined with and without P addition that improves soil nitrogen (N) use efficiency. Here, a microcosm experiment was conducted to assess the impacts of RFC combined with and without inorganic P (0 and 50 mg P kg-1 as KH2PO4) addition on AOA and AOB community diversities, enzyme activities and N availability. The results showed that RFC significantly increased available N content without P addition compared with P addition. Moreover, RFC significantly increased urease activity and AOA shannon diversity, and reduced NAG activity and AOB shannon diversity without P addition, respectively. Higher diversity of AOA compared with that of AOB causes greater competition for resources and energy within their habitats, thereby resulting in lower network complexity. Our findings indicated that the abundances of AOA and AOB are influenced through the introduction of fish and/or P availability, of which AOB is linked to N availability. Overall, RFC could improve paddy soil N availability without P addition in subtropical region, which provides a scientific reference for promoting the practices that reduce N fertilizer application in RFC.
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Affiliation(s)
- Xing Liu
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Daolin Sun
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Huaqiao Huang
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; College of Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Jiaen Zhang
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, China.
| | - Hongjun Zheng
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Qi Jia
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Min Zhao
- Guangdong Engineering Technology Research Center of Modern Eco-agriculture and Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Eco-circular Agriculture, South China Agricultural University, Guangzhou 510642, China; College of Agriculture, South China Agricultural University, Guangzhou 510642, China
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4
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Beeckman F, Annetta L, Corrochano-Monsalve M, Beeckman T, Motte H. Enhancing agroecosystem nitrogen management: microbial insights for improved nitrification inhibition. Trends Microbiol 2024; 32:590-601. [PMID: 37973432 DOI: 10.1016/j.tim.2023.10.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 11/19/2023]
Abstract
Nitrification is a key microbial process in the nitrogen (N) cycle that converts ammonia to nitrate. Excessive nitrification, typically occurring in agroecosystems, has negative environmental impacts, including eutrophication and greenhouse gas emissions. Nitrification inhibitors (NIs) are widely used to manage N in agricultural systems by reducing nitrification rates and improving N use efficiency. However, the effectiveness of NIs can vary depending on the soil conditions, which, in turn, affect the microbial community and the balance between different functional groups of nitrifying microorganisms. Understanding the mechanisms underlying the effectiveness of NIs, and how this is affected by the soil microbial communities or abiotic factors, is crucial for promoting sustainable fertilizer practices. Therefore, this review examines the different types of NIs and how abiotic parameters can influence the nitrifying community, and, therefore, the efficacy of NIs. By discussing the latest research in this field, we provide insights that could facilitate the development of more targeted, efficient, or complementary NIs that improve the application of NIs for sustainable management practices in agroecosystems.
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Affiliation(s)
- Fabian Beeckman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052 Ghent, Belgium; VIB Center for Plant Systems Biology, Technologiepark 71, 9052 Ghent, Belgium
| | - Laure Annetta
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052 Ghent, Belgium; VIB Center for Plant Systems Biology, Technologiepark 71, 9052 Ghent, Belgium
| | - Mario Corrochano-Monsalve
- Departamento de Genética, Antropología Física y Fisiología Animal, Facultad de Ciencia y Tecnología, Universidad del País Vasco (UPV/EHU), Leioa, Spain; Instituto Multidisciplinar Para el Estudio del Medio 'Ramon Margalef', Universidad de Alicante, Carretera de San Vicente del Raspeig s/n, 03690 San Vicente del Raspeig, Spain
| | - Tom Beeckman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052 Ghent, Belgium; VIB Center for Plant Systems Biology, Technologiepark 71, 9052 Ghent, Belgium
| | - Hans Motte
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052 Ghent, Belgium; VIB Center for Plant Systems Biology, Technologiepark 71, 9052 Ghent, Belgium.
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5
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Aguilar-Rangel EJ, Savin-Gámez A, García-Maldonado JQ, Prado B, Vásquez-Murrieta MS, Siebe C, Alcántara-Hernández RJ. Increases in the soil ammonia oxidizing phylotypes and their rechange due to long-term irrigation with wastewater. PLoS One 2024; 19:e0299518. [PMID: 38603769 PMCID: PMC11008854 DOI: 10.1371/journal.pone.0299518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/13/2024] [Indexed: 04/13/2024] Open
Abstract
Wastewater irrigation is a common practice for agricultural systems in arid and semiarid zones, which can help to overcome water scarcity and contribute with nutrient inputs. Ammonia-oxidizing bacteria (AOB) and archaea (AOA) are key in the transformation of NH4+-N in soil and can be affected by variations in soil pH, EC, N and C content, or accumulation of pollutants, derived from wastewater irrigation. The objective of this study was to determine the changes in the ammonia oxidizing communities in agricultural soils irrigated with wastewater for different periods of time (25, 50, and 100 years), and in rainfed soils (never irrigated). The amoA gene encoding for the catalytic subunit of the ammonia monooxygenase was used as molecular reporter; it was quantified by qPCR and sequenced by high throughput sequencing, and changes in the community composition were associated with the soil physicochemical characteristics. Soils irrigated with wastewater showed up to five times more the abundance of ammonia oxidizers (based on 16S rRNA gene relative abundance and amoA gene copies) than those under rainfed agriculture. While the amoA-AOA: amoA-AOB ratio decreased from 9.8 in rainfed soils to 1.6 in soils irrigated for 100 years, indicating a favoring environment for AOB rather than AOA. Further, the community structure of both AOA and AOB changed during wastewater irrigation compared to rainfed soils, mainly due to the abundance variation of certain phylotypes. Finally, the significant correlation between soil pH and the ammonia oxidizing community structure was confirmed, mainly for AOB; being the main environmental driver of the ammonia oxidizer community. Also, a calculated toxicity index based on metals concentrations showed a correlation with AOB communities, while the content of carbon and nitrogen was more associated with AOA communities. The results indicate that wastewater irrigation influence ammonia oxidizers communities, manly by the changes in the physicochemical environment.
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Affiliation(s)
- Eduardo J. Aguilar-Rangel
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Unidad de Posgrado, Edificio D, 1° Piso, Circuito de Posgrados, Ciudad Universitaria, Coyoacán, 04510, Ciudad de México, México
| | - Alba Savin-Gámez
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Unidad de Posgrado, Edificio D, 1° Piso, Circuito de Posgrados, Ciudad Universitaria, Coyoacán, 04510, Ciudad de México, México
| | - José Q. García-Maldonado
- Departamento de Recursos del Mar, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Merida 97310, Yucatán, México
| | - Blanca Prado
- Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Av. Universidad 3000, Del. Coyoacán, 04510, Ciudad de México, México
| | - María Soledad Vásquez-Murrieta
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Del. Miguel Hidalgo, 11340, Ciudad de México, México
| | - Christina Siebe
- Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Av. Universidad 3000, Del. Coyoacán, 04510, Ciudad de México, México
| | - Rocío J. Alcántara-Hernández
- Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Av. Universidad 3000, Del. Coyoacán, 04510, Ciudad de México, México
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Gao W, Zhao J, Guo X, Wang F, Chen X, Zhu Z, Ge T, Wang L, Kuzyakov Y, Wu J, Jia Z. Intensive N 2 fixation accelerates microbial turnover in cropland soils. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 916:170081. [PMID: 38220009 DOI: 10.1016/j.scitotenv.2024.170081] [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: 11/23/2023] [Revised: 01/08/2024] [Accepted: 01/08/2024] [Indexed: 01/16/2024]
Abstract
Biological nitrogen fixation (BNF) is strongly affected by the carbon (C) and nitrogen (N) stoichiometry in soil and depends on the input of organic C. Due to the high metabolic costs of nitrogenase activity, however, the response of BNF to organic C input and its impact on microbial turnover remain unclear. To address this knowledge gap, we combined 15N2 tracing with high-throughput sequencing by adding glucose or glucose plus mineral N fertilizer for a 12-day incubation in three cropland soils. Glucose addition alone strongly changed the BNF activity (0.76-2.51 mg N kg-1 d-1), while BNF was completely absent after mineral N fertilization. This switch-on of BNF by glucose addition supported equally high rates of microbial growth and organic C mineralization compared with the direct mineral N assimilation by microorganisms. Glucose-induced BNF was predominantly catalyzed by Azotobacter-affiliated free-living diazotrophs (>50 % of the total nifH genes), which increased with diverse nondiazotrophs such as Nitrososphaera, Bacillus and Pseudoxanthomonas. Structural equation models (SEMs) and random forest (RF) analyses consistently revealed that the soil C:N ratio and Azotobacter-affiliated diazotrophic abundances were the key factors affecting glucose-induced BNF. Our findings emphasize the importance of free-living diazotrophs for microbial turnover of organic C in soil.
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Affiliation(s)
- Wei Gao
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China; State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Jun Zhao
- Department of Microbiology & Cell Science, Fort Lauderdale Research and Education Center, Institute for Food and Agricultural Sciences (IFAS), University of Florida, Davie, FL 33314, USA
| | - Xiaobin Guo
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China
| | - Fang Wang
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Xiangbi Chen
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China
| | - Zhenke Zhu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China; State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Virology, Ningbo University, Ningbo 315211, PR China
| | - Tida Ge
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China; State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Plant Virology, Ningbo University, Ningbo 315211, PR China
| | - Lianfeng Wang
- College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, PR China
| | - Yakov Kuzyakov
- Department of Soil Science of Temperate Ecosystems, Department of Agricultural Soil Science, University of Goettingen, Göttingen 37077, Germany; Peoples Friendship University of Russia (RUDN University), Moscow 117198, Russia; Institute of Environmental Sciences, Kazan Federal University, Kazan 420049, Russia
| | - Jinshui Wu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, PR China
| | - Zhongjun Jia
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China; State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Science, Changchun 130102, PR China.
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Xin W, Zhang J, Yu Y, Tian Y, Li H, Chen X, Li W, Liu Y, Lu T, He B, Xiong Y, Yang Z, Xu T, Tang W. Root microbiota of tea plants regulate nitrogen homeostasis and theanine synthesis to influence tea quality. Curr Biol 2024; 34:868-880.e6. [PMID: 38366595 DOI: 10.1016/j.cub.2024.01.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 11/26/2023] [Accepted: 01/16/2024] [Indexed: 02/18/2024]
Abstract
The flavor profile of tea is influenced not only by different tea varieties but also by the surrounding soil environment. Recent studies have indicated the regulatory role of soil microbes residing in plant roots in nutrient uptake and metabolism. However, the impact of this regulatory mechanism on tea quality remains unclear. In this study, we showed that a consortium of microbes isolated from tea roots enhanced ammonia uptake and facilitated the synthesis of theanine, a key determinant of tea taste. Variations were observed in the composition of microbial populations colonizing tea roots and the rhizosphere across different seasons and tea varieties. By comparing the root microorganisms of the high-theanine tea variety Rougui with the low-theanine variety Maoxie, we identified a specific group of microbes that potentially modulate nitrogen metabolism, subsequently influencing the theanine levels in tea. Furthermore, we constructed a synthetic microbial community (SynCom) mirroring the microbe population composition found in Rougui roots. Remarkably, applying SynCom resulted in a significant increase in the theanine content of tea plants and imparted greater tolerance to nitrogen deficiency in Arabidopsis. Our study provides compelling evidence supporting the use of root microorganisms as functional microbial fertilizers to enhance tea quality.
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Affiliation(s)
- Wei Xin
- College of Horticulture, School of Future Technology, and Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China; College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, Fujian, China
| | - Jianming Zhang
- College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, Fujian, China
| | - Yongdong Yu
- College of Horticulture, School of Future Technology, and Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Yunhe Tian
- College of Horticulture, School of Future Technology, and Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Hao Li
- College of Horticulture, School of Future Technology, and Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Xiaolu Chen
- College of Horticulture, School of Future Technology, and Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Wei Li
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yanlin Liu
- College of Horticulture, School of Future Technology, and Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Ting Lu
- College of Horticulture, School of Future Technology, and Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Biyun He
- College of Horticulture, School of Future Technology, and Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Yan Xiong
- College of Horticulture, School of Future Technology, and Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China
| | - Zhenbiao Yang
- College of Horticulture, School of Future Technology, and Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China; Faculty of Synthetic Biology, Shenzhen Institute of Advanced Technology, Shenzhen, Guangdong 518055, P.R. China; Key Laboratory of Quantitative Synthetic Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, P.R. China.
| | - Tongda Xu
- College of Horticulture, School of Future Technology, and Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China.
| | - Wenxin Tang
- College of Horticulture, School of Future Technology, and Haixia Institute of Science and Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China.
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8
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Beeckman F, Drozdzecki A, De Knijf A, Audenaert D, Beeckman T, Motte H. High-throughput assays to identify archaea-targeting nitrification inhibitors. FRONTIERS IN PLANT SCIENCE 2024; 14:1283047. [PMID: 38259951 PMCID: PMC10800436 DOI: 10.3389/fpls.2023.1283047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 12/06/2023] [Indexed: 01/24/2024]
Abstract
Nitrification is a microbial process that converts ammonia (NH3) to nitrite (NO2 -) and then to nitrate (NO3 -). The first and rate-limiting step in nitrification is ammonia oxidation, which is conducted by both bacteria and archaea. In agriculture, it is important to control this process as high nitrification rates result in NO3 - leaching, reduced nitrogen (N) availability for the plants and environmental problems such as eutrophication and greenhouse gas emissions. Nitrification inhibitors can be used to block nitrification, and as such reduce N pollution and improve fertilizer use efficiency (FUE) in agriculture. Currently applied inhibitors target the bacteria, and do not block nitrification by ammonia-oxidizing archaea (AOA). While it was long believed that nitrification in agroecosystems was primarily driven by bacteria, recent research has unveiled potential significant contributions from ammonia-oxidizing archaea (AOA), especially when bacterial activity is inhibited. Hence, there is also a need for AOA-targeting nitrification inhibitors. However, to date, almost no AOA-targeting inhibitors are described. Furthermore, AOA are difficult to handle, hindering their use to test or identify possible AOA-targeting nitrification inhibitors. To address the need for AOA-targeting nitrification inhibitors, we developed two miniaturized nitrification inhibition assays using an AOA-enriched nitrifying community or the AOA Nitrosospaera viennensis. These assays enable high-throughput testing of candidate AOA inhibitors. We here present detailed guidelines on the protocols and illustrate their use with some examples. We believe that these assays can contribute to the discovery of future AOA-targeting nitrification inhibitors, which could complement the currently applied inhibitors to increase nitrification inhibition efficiency in the field and as such contribute to a more sustainable agriculture.
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Affiliation(s)
- Fabian Beeckman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), Ghent, Belgium
| | - Andrzej Drozdzecki
- Screening Core, Vlaams Instituut voor Biotechnologie (VIB), Ghent, Belgium
- Centre for Bioassay Development and Screening (C-BIOS), Ghent University, Ghent, Belgium
| | - Alexa De Knijf
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), Ghent, Belgium
| | - Dominique Audenaert
- Screening Core, Vlaams Instituut voor Biotechnologie (VIB), Ghent, Belgium
- Centre for Bioassay Development and Screening (C-BIOS), Ghent University, Ghent, Belgium
| | - Tom Beeckman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), Ghent, Belgium
| | - Hans Motte
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), Ghent, Belgium
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9
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Ding F, He T, Qi X, Zhang H, An L, Xu S, Zhang X. Comammox Nitrospira dominates the nitrification in artificial coniferous forest soils of the Qilian Mountains. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167653. [PMID: 37806577 DOI: 10.1016/j.scitotenv.2023.167653] [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: 08/03/2023] [Revised: 10/04/2023] [Accepted: 10/05/2023] [Indexed: 10/10/2023]
Abstract
Complete ammonia oxidizers (Comammox, CMX) are a newly discovered and important component of the nitrogen cycle. While CMX Nitrospira has been detected in various ecosystems, few studies so far have focused on the relative contribution and co-occurrence network of ammonia oxidizing archaea (AOA), bacteria (AOB), and CMX Nitrospira in artificial forest ecosystems (tree plantations). We evaluated the dynamics of composition, co-occurrence patterns and contribution of soil microbial nitrifiers to nitrification in soil of various tree species with different ages in the Qilian Mountains employing the space for time substitution approach, quantitative PCR and high-throughput sequencing technology. Generally, plantation development significantly reduced soil potential nitrification rates. Inhibition experiments and modular analysis showed that AOA played leading roles in nitrification of abandoned farmland and 17-year-old Hippophae rhamnoides, whereas CMX Nitrospira dominated in 36-year-old Picea crassifolia, 36-year-old Picea crassifolia and Larix gmelinii mixed plantation, and 50-year-old Picea crassifolia. The dominant AOA and CMX Nitrospira lineages in all samples were Group I.1b and Clade B, respectively. The assembly of nitrifier community was governed by stochastic processes, in which dispersal limitation made a significant contribution. The nitrifiers coexist in a mutualistic manner, albeit with possible functional redundancy, while the modular analysis revealed the aggregation pattern of the four modules in different artificial forests' soil. The Mantel test showed that modular formation is mainly affected by NH4+ and SOM. These results broaden our current understanding of the relation between CMX Nitrospira and canonical ammonia oxidizers in terrestrial ecosystems, and provide empirical evidence for not only niche differentiation, but also the relative contribution and co-occurrence patterns of nitrifying communities in an artificial forest ecosystem.
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Affiliation(s)
- Fan Ding
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Tianjiao He
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xing'e Qi
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Hui Zhang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Lizhe An
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000, China; The College of Forestry, Beijing Forestry University, Beijing 100083, China
| | - Shijian Xu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Xinfang Zhang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu 730000, China.
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10
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Zhao J, Huang L, Chakrabarti S, Cooper J, Choi E, Ganan C, Tolchinsky B, Triplett EW, Daroub SH, Martens-Habbena W. Nitrogen and phosphorous acquisition strategies drive coexistence patterns among archaeal lineages in soil. THE ISME JOURNAL 2023; 17:1839-1850. [PMID: 37596409 PMCID: PMC10579303 DOI: 10.1038/s41396-023-01493-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/06/2023] [Accepted: 08/08/2023] [Indexed: 08/20/2023]
Abstract
Soil represents the largest reservoir of Archaea on Earth. Present-day archaeal diversity in soils globally is dominated by members of the class Nitrososphaeria. The evolutionary radiation of this class is thought to reflect adaptations to a wide range of temperatures, pH, and other environmental conditions. However, the mechanisms that govern competition and coexistence among Nitrososphaeria lineages in soil remain poorly understood. Here we show that predominant soil Nitrososphaeria lineages compose a patchwork of gene inventory and expression profiles for ammonia, urea, and phosphate utilization. In contrast, carbon fixation, respiration, and ATP synthesis genes are conserved and expressed consistently among predominant phylotypes across 12 major evolutionary lineages commonly found in soil. In situ gene expression profiles closely resemble pure culture reference strains under optimal growth conditions. Together, these results reveal resource-based coexistence patterns among Nitrososphaeria lineages and suggest complementary ecophysiological niches associated with differential nutrient acquisition strategies among globally predominant archaeal lineages in soil.
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Affiliation(s)
- Jun Zhao
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA
| | - Laibin Huang
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA
| | - Seemanti Chakrabarti
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA
| | - Jennifer Cooper
- Everglades Research and Education Center, Soil and Water Sciences Department, University of Florida, Belle Glade, FL, 33430, USA
| | - EunKyung Choi
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA
| | - Carolina Ganan
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA
| | - Bryn Tolchinsky
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA
| | - Eric W Triplett
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, 32611, USA
| | - Samira H Daroub
- Everglades Research and Education Center, Soil and Water Sciences Department, University of Florida, Belle Glade, FL, 33430, USA
| | - Willm Martens-Habbena
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA.
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11
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Huang L, Levintal E, Erikson CB, Coyotl A, Horwath WR, Dahlke HE, Mazza Rodrigues JL. Molecular and Dual-Isotopic Profiling of the Microbial Controls on Nitrogen Leaching in Agricultural Soils under Managed Aquifer Recharge. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023. [PMID: 37467434 PMCID: PMC10399200 DOI: 10.1021/acs.est.3c01356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Nitrate (NO3-) leaching is a serious health and ecological concern in global agroecosystems, particularly those under the application of agricultural-managed aquifer recharge (Ag-MAR); however, there is an absence of information on microbial controls affecting NO3- leaching outcomes. We combine natural dual isotopes of NO3- (15N/14N and 18O/16O) with metagenomics, quantitative polymerase chain reaction (PCR), and a threshold indicator taxa analysis (TITAN) to investigate the activities, taxon profiles, and environmental controls of soil microbiome associated with NO3- leaching at different depths from Californian vineyards under Ag-MAR application. The isotopic signatures demonstrated a significant priming effect (P < 0.01) of Ag-MAR on denitrification activities in the topsoil (0-10 cm), with a 12-25-fold increase of 15N-NO3- and 18O-NO3- after the first 24 h of flooding, followed by a sharp decrease in the enrichment of both isotopes with ∼80% decline in denitrification activities thereafter. In contrast, deeper soils (60-100 cm) showed minimal or no denitrification activities over the course of Ag-MAR application, thus resulting in 10-20-fold of residual NO3- being leached. Metagenomic profiling and laboratory microcosm demonstrated that both nitrifying and denitrifying groups, responsible for controlling NO3- leaching, decreased in abundance and potential activity rates with soil depth. TITAN suggested that Nitrosocosmicus and Bradyrhizobium, as the major nitrifier and denitrifier, had the highest and lowest tipping points with regard to the NO3- changes (P < 0.05), respectively. Overall, our study provides new insight into specific depth limitations of microbial controls on soil NO3- leaching in agroecosystems.
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Affiliation(s)
- Laibin Huang
- Department of Land, Air, and Water Resources, University of California, Davis, Davis, California 95616, United States
| | - Elad Levintal
- Department of Land, Air, and Water Resources, University of California, Davis, Davis, California 95616, United States
| | - Christian Bernard Erikson
- Department of Land, Air, and Water Resources, University of California, Davis, Davis, California 95616, United States
| | - Adolfo Coyotl
- Department of Land, Air, and Water Resources, University of California, Davis, Davis, California 95616, United States
| | - William R Horwath
- Department of Land, Air, and Water Resources, University of California, Davis, Davis, California 95616, United States
| | - Helen E Dahlke
- Department of Land, Air, and Water Resources, University of California, Davis, Davis, California 95616, United States
| | - Jorge L Mazza Rodrigues
- Department of Land, Air, and Water Resources, University of California, Davis, Davis, California 95616, United States
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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12
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Hou Z, Zhou Q, Mo F, Kang W, Ouyang S. Enhanced carbon emission driven by the interaction between functional microbial community and hydrocarbons: An enlightenment for carbon cycle. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 867:161402. [PMID: 36638996 DOI: 10.1016/j.scitotenv.2023.161402] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 12/30/2022] [Accepted: 01/01/2023] [Indexed: 06/17/2023]
Abstract
Soil microbial communities are usually regarded as one of the key players in the global element cycling. Moreover, an important consequence of oil contamination altering the structure of microbial communities is likely to result in an increased carbon emission. However, understanding of the complex interactions between environmental factors and biological communities is clearly lagging behind. Here it showed that the flux of carbon emissions increased in oil-contaminated soils, up to 13.64 g C·(kg soil)-1·h-1. This phenomenon was mainly driven by the enrichment of rare degrading microorganisms (e.g., Methylosinus, Marinobacter, Pseudomonas, Alcanivorax, Yeosuana, Halomonas and Microbulbifer) in the aerobic layer, rather than the anaerobic layer, which is more conducive to methane formation. In addition, petroleum hydrocarbons and environmental factors are equally important in shaping the structure of microbial communities (the ecological stability) and functional traits (e.g., fatty acid metabolism, lipid metabolism and amino acid metabolism) due to the different ecological sensitivities of microorganisms. Thus, it can be believed that the variability of rare hydrocarbon degrading microorganisms is of greater concern than changes in dominant microorganisms in oil-contaminated soil. Undoubtedly, this study could reveal the unique characterization of bacterial communities that mediate carbon emission and provide evidence for understanding the conversion from carbon stores to carbon gas release in oil-contaminated soils.
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Affiliation(s)
- Zelin Hou
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Carbon Neutrality Science Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Qixing Zhou
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Carbon Neutrality Science Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Fan Mo
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Carbon Neutrality Science Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Weilu Kang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Carbon Neutrality Science Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Shaohu Ouyang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Carbon Neutrality Science Center, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
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13
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Propagation of viral genomes by replicating ammonia-oxidising archaea during soil nitrification. THE ISME JOURNAL 2023; 17:309-314. [PMID: 36414709 PMCID: PMC9859776 DOI: 10.1038/s41396-022-01341-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 11/02/2022] [Accepted: 11/04/2022] [Indexed: 11/23/2022]
Abstract
Ammonia-oxidising archaea (AOA) are a ubiquitous component of microbial communities and dominate the first stage of nitrification in some soils. While we are beginning to understand soil virus dynamics, we have no knowledge of the composition or activity of those infecting nitrifiers or their potential to influence processes. This study aimed to characterise viruses having infected autotrophic AOA in two nitrifying soils of contrasting pH by following transfer of assimilated CO2-derived 13C from host to virus via DNA stable-isotope probing and metagenomic analysis. Incorporation of 13C into low GC mol% AOA and virus genomes increased DNA buoyant density in CsCl gradients but resulted in co-migration with dominant non-enriched high GC mol% genomes, reducing sequencing depth and contig assembly. We therefore developed a hybrid approach where AOA and virus genomes were assembled from low buoyant density DNA with subsequent mapping of 13C isotopically enriched high buoyant density DNA reads to identify activity of AOA. Metagenome-assembled genomes were different between the two soils and represented a broad diversity of active populations. Sixty-four AOA-infecting viral operational taxonomic units (vOTUs) were identified with no clear relatedness to previously characterised prokaryote viruses. These vOTUs were also distinct between soils, with 42% enriched in 13C derived from hosts. The majority were predicted as capable of lysogeny and auxiliary metabolic genes included an AOA-specific multicopper oxidase suggesting infection may augment copper uptake essential for central metabolic functioning. These findings indicate virus infection of AOA may be a frequent process during nitrification with potential to influence host physiology and activity.
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14
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Egbeagu UU, Liu W, Zhang J, Sun L, Bello A, Wang B, Deng L, Sun Y, Han Y, Zhao Y, Zhao L, Zhao M, Bi R, Jong C, Shi S, Xu X. The activity of ammonia-oxidizing bacteria on the residual effect of biochar-compost amended soils in two cropping seasons. Biochem Eng J 2023. [DOI: 10.1016/j.bej.2022.108778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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15
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Zhao J, Rodriguez J, Martens-Habbena W. Fine-scale evaluation of two standard 16S rRNA gene amplicon primer pairs for analysis of total prokaryotes and archaeal nitrifiers in differently managed soils. Front Microbiol 2023; 14:1140487. [PMID: 36910167 PMCID: PMC9995467 DOI: 10.3389/fmicb.2023.1140487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 01/30/2023] [Indexed: 02/25/2023] Open
Abstract
The advance of high-throughput molecular biology tools allows in-depth profiling of microbial communities in soils, which possess a high diversity of prokaryotic microorganisms. Amplicon-based sequencing of 16S rRNA genes is the most common approach to studying the richness and composition of soil prokaryotes. To reliably detect different taxonomic lineages of microorganisms in a single soil sample, an adequate pipeline including DNA isolation, primer selection, PCR amplification, library preparation, DNA sequencing, and bioinformatic post-processing is required. Besides DNA sequencing quality and depth, the selection of PCR primers and PCR amplification reactions arguably have the largest influence on the results. This study tested the performance and potential bias of two primer pairs, i.e., 515F (Parada)-806R (Apprill) and 515F (Parada)-926R (Quince) in the standard pipelines of 16S rRNA gene Illumina amplicon sequencing protocol developed by the Earth Microbiome Project (EMP), against shotgun metagenome-based 16S rRNA gene reads. The evaluation was conducted using five differently managed soils. We observed a higher richness of soil total prokaryotes by using reverse primer 806R compared to 926R, contradicting to in silico evaluation results. Both primer pairs revealed various degrees of taxon-specific bias compared to metagenome-derived 16S rRNA gene reads. Nonetheless, we found consistent patterns of microbial community variation associated with different land uses, irrespective of primers used. Total microbial communities, as well as ammonia oxidizing archaea (AOA), the predominant ammonia oxidizers in these soils, shifted along with increased soil pH due to agricultural management. In the unmanaged low pH plot abundance of AOA was dominated by the acid-tolerant NS-Gamma clade, whereas limed agricultural plots were dominated by neutral-alkaliphilic NS-Delta/NS-Alpha clades. This study stresses how primer selection influences community composition and highlights the importance of primer selection for comparative and integrative studies, and that conclusions must be drawn with caution if data from different sequencing pipelines are to be compared.
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Affiliation(s)
- Jun Zhao
- Fort Lauderdale Research and Education Center, University of Florida, Davie, FL, United States
| | - Jonathan Rodriguez
- Fort Lauderdale Research and Education Center, University of Florida, Davie, FL, United States
| | - Willm Martens-Habbena
- Fort Lauderdale Research and Education Center, University of Florida, Davie, FL, United States
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16
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Hsu PC(L, Di HJ, Cameron K, Podolyan A, Chau H, Luo J, Miller B, Carrick S, Johnstone P, Ferguson S, Wei W, Shen J, Zhang L, Liu H, Zhao T, Wei W, Ding W, Pan H, Liu Y, Li B. Comammox Nitrospira Clade B is the most abundant complete ammonia oxidizer in a dairy pasture soil and inhibited by dicyandiamide and high ammonium concentrations. Front Microbiol 2022; 13:1048735. [PMID: 36578577 PMCID: PMC9791190 DOI: 10.3389/fmicb.2022.1048735] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 11/07/2022] [Indexed: 12/14/2022] Open
Abstract
The recent discovery of comammox Nitrospira, a complete ammonia oxidizer, capable of completing the nitrification on their own has presented tremendous challenges to our understanding of the nitrification process. There are two divergent clades of comammox Nitrospira, Clade A and B. However, their population abundance, community structure and role in ammonia and nitrite oxidation are poorly understood. We conducted a 94-day microcosm study using a grazed dairy pasture soil amended with urea fertilizers, synthetic cow urine, and the nitrification inhibitor, dicyandiamide (DCD), to investigate the growth and community structure of comammox Nitrospira spp. We discovered that comammox Nitrospira Clade B was two orders of magnitude more abundant than Clade A in this fertile dairy pasture soil and the most abundant subcluster was a distinctive phylogenetic uncultured subcluster Clade B2. We found that comammox Nitrospira Clade B might not play a major role in nitrite oxidation compared to the role of canonical Nitrospira nitrite-oxidizers, however, comammox Nitrospira Clade B is active in nitrification and the growth of comammox Nitrospira Clade B was inhibited by a high ammonium concentration (700 kg synthetic urine-N ha-1) and the nitrification inhibitor DCD. We concluded that comammox Nitrospira Clade B: (1) was the most abundant comammox in the dairy pasture soil; (2) had a low tolerance to ammonium and can be inhibited by DCD; and (3) was not the dominant nitrite-oxidizer in the soil. This is the first study discovering a new subcluster of comammox Nitrospira Clade B2 from an agricultural soil.
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Affiliation(s)
- Pei-Chun (Lisa) Hsu
- Centre for Soil and Environmental Research, Lincoln University, Lincoln, New Zealand
| | - Hong J. Di
- Centre for Soil and Environmental Research, Lincoln University, Lincoln, New Zealand,*Correspondence: Hong J. Di,
| | - Keith Cameron
- Centre for Soil and Environmental Research, Lincoln University, Lincoln, New Zealand
| | - Andriy Podolyan
- Centre for Soil and Environmental Research, Lincoln University, Lincoln, New Zealand
| | - Henry Chau
- Centre for Soil and Environmental Research, Lincoln University, Lincoln, New Zealand
| | | | - Blair Miller
- Lincoln Agritech Ltd, Lincoln University, Lincoln, New Zealand
| | - Sam Carrick
- Manaaki Whenua – Landcare Research, Lincoln, New Zealand
| | - Paul Johnstone
- The New Zealand Institute for Plant and Food Research, Havelock North, New Zealand
| | - Scott Ferguson
- Department of Microbiology, University of Otago, Dunedin, New Zealand
| | - Wenhua Wei
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
| | | | - Limei Zhang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
| | - Hongbin Liu
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Tongke Zhao
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Wenxue Wei
- Institute of Subtropical Agricultural Ecology, Chinese Academy of Sciences, Changsha, China
| | - Weixin Ding
- Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Hong Pan
- College of Natural Resources and Environment, Shandong Agricultural University, Taian, China
| | - Yimeng Liu
- Centre for Innovation and Development, Beijing Normal University, Zhuhai, China
| | - Bowen Li
- College of Natural Resources and Environment, Hebei Agricultural University, Baoding, China
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17
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Yue H, Banerjee S, Liu C, Ren Q, Zhang W, Zhang B, Tian X, Wei G, Shu D. Fertilizing-induced changes in the nitrifying microbiota associated with soil nitrification and crop yield. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 841:156752. [PMID: 35718181 DOI: 10.1016/j.scitotenv.2022.156752] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 06/07/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
Ammonia oxidizing archaea (AOA) and bacteria (AOB), nitrite-oxidizing bacteria (NOB), and comammox Nitrospira (CMX) play pivotal roles in global nitrogen-cycling network. Despite its importance, the driving forces for niche specialization of these nitrifiers, as well as their relative contributions to nitrification and crop yield have not been fully understood. Here, we investigated the niche specialization and environmental prevalence of nitrifying communities, and their importance for the nitrification rate and crop yield across a gradient of nitrogen inputs in a two-decade old field experiment. The results of 15N-tracer and quantitative PCR revealed that AOB and NOB jointly determined the gross nitrification rates across mineral fertilizer treatments, whereas AOA and AOB contributed more than other nitrifiers to nitrification under with organic fertilizer amendments. Linear regression model revealed that crop yield could be linked with AOB and NOB under inorganic farming but closely associated with CMX under organic management. Amplicon sequencing of these functional genes further demonstrated that mineral and organic fertilizers have distinct influences on the β-diversity and niche breadth of these nitrifying communities, indicating that fertilization triggered niche specialization of nitrifying guilds in agricultural soils. Notably, organic fertilization enhanced the network complexity of these nitrifiers by harboring keystone taxa. Random forest analysis provide robustly evidence for the hypothesis that abundance of functional genes contributed more than a- and β-diversity of these nitrifiers for driving nitrification rates and crop yields. Collectively, these findings provide the empirical evidence for the environmental adaptation and niche specialization of nitrifying communities, and their contributions in nitrification and crop yield when confronted with long-term nitrogen inputs.
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Affiliation(s)
- Hong Yue
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Samiran Banerjee
- Department of Microbiological Sciences, North Dakota State University, Fargo 58102, ND, USA
| | - Conghui Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qiyong Ren
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Wu Zhang
- Heihe Branch, Heilongjiang Academy of Agricultural Sciences, Heihe, Heilongjiang 150086, China
| | - Baogang Zhang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Xiaohong Tian
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Gehong Wei
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China; Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, Yangling, Shaanxi 712100, China
| | - Duntao Shu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China; Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, Yangling, Shaanxi 712100, China.
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18
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Draft Metagenome-Assembled Genome Sequences of Three Novel Ammonia-Oxidizing
Nitrososphaera
Strains Recovered from Agricultural Soils in Western Colorado. Microbiol Resour Announc 2022; 11:e0036022. [PMID: 35938822 PMCID: PMC9476989 DOI: 10.1128/mra.00360-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Microbial nitrification is critical to nitrogen loss from agricultural soils. Here, we report three thaumarchaeotal metagenome-assembled genomes (MAGs) representing a new species of Nitrososphaera. These genomes expand the representation of archaeal nitrifiers recovered from arid, agricultural soils.
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19
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Honeyman AS, Fegel TS, Peel HF, Masters NA, Vuono DC, Kleiber W, Rhoades CC, Spear JR. Statistical Learning and Uncommon Soil Microbiota Explain Biogeochemical Responses after Wildfire. Appl Environ Microbiol 2022; 88:e0034322. [PMID: 35703548 PMCID: PMC9275219 DOI: 10.1128/aem.00343-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 05/16/2022] [Indexed: 11/20/2022] Open
Abstract
Wildfires are a perennial event globally, and the biogeochemical underpinnings of soil responses at relevant spatial and temporal scales are unclear. Soil biogeochemical processes regulate plant growth and nutrient losses that affect water quality, yet the response of soil after variable intensity fire is difficult to explain and predict. To address this issue, we examined two wildfires in Colorado, United States, across the first and second postfire years and leveraged statistical learning (SL) to predict and explain biogeochemical responses. We found that SL predicts biogeochemical responses in soil after wildfire with surprising accuracy. Of the 13 biogeochemical analytes analyzed in this study, 9 are best explained with a hybrid microbiome + biogeochemical SL model. Biogeochemical-only models best explain 3 features, and 1 feature is explained equally well with the hybrid and biogeochemical-only models. In some cases, microbiome-only SL models are also effective (such as predicting NH4+). Whenever a microbiome component is employed, selected features always involve uncommon soil microbiota (i.e., the "rare biosphere" [existing at <1% mean relative abundance]). Here, we demonstrate that SL paired with DNA sequence and biogeochemical data predicts environmental features in postfire soils, although this approach could likely be applied to any biogeochemical system. IMPORTANCE Soil biogeochemical processes are critical to plant growth and water quality and are substantially disturbed by wildfire. However, soil responses to fire are difficult to predict. To address this issue, we developed a large environmental data set that tracks postfire changes in soil and used statistical learning (SL) to build models that exploit complex data to make predictions about biogeochemical responses. Here, we show that SL depends upon uncommon microbiota in soil (the "rare biosphere") to make surprisingly accurate predictions about soil biogeochemical responses to wildfire. Using SL to explain variation in a natively chaotic environmental system is mechanism independent. Likely, the approach that we describe for combining SL with microbiome and biogeochemical parameters has practical applications across a range of issues in the environmental sciences where predicting responses would be useful.
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Affiliation(s)
- Alexander S. Honeyman
- Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado, USA
| | - Timothy S. Fegel
- Rocky Mountain Research Station, USDA Forest Service, Fort Collins, Colorado, USA
| | - Henry F. Peel
- Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado, USA
| | - Nicole A. Masters
- Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado, USA
| | - David C. Vuono
- Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado, USA
| | - William Kleiber
- Applied Mathematics, University of Colorado, Boulder, Colorado, USA
| | - Charles C. Rhoades
- Rocky Mountain Research Station, USDA Forest Service, Fort Collins, Colorado, USA
| | - John R. Spear
- Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado, USA
- Quantitative Biosciences and Engineering, Colorado School of Mines, Golden, Colorado, USA
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Liao X, Chen Y, Ruan H, Malghani S. Incapability of biochar to mitigate biogas slurry induced N 2O emissions: Field investigations after 7 years of biochar application in a poplar plantation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 794:148572. [PMID: 34214806 DOI: 10.1016/j.scitotenv.2021.148572] [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: 11/19/2020] [Revised: 06/09/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
Nitrous oxide (N2O) is a potent atmospheric greenhouse gas that is largely emitted from soils due to the enhanced use of reactive nitrogen in agriculture and plantations. In this study, we evaluated the N2O mitigation ability of biochar after 7 years of application in a poplar plantation. The field experiment was based on combinations of three biochar (0, 80, and 120 t ha-1) and four biogas slurry (0, 125, 250, and 375 m3 ha-1) rates following a factorial design. N2O flux rates were measured for seven consecutive months using in situ static chambers. Soil physicochemical characteristics, potential nitrification rate (PNR), denitrification (DEA), and N2O reduction were recorded once each in September 2019 and January 2020 via lab incubations. In addition, qPCR assays were used to assess the abundance of key nitrifying and denitrifying functional genes. Biochar application after 7 years had no significant effects on N2O flux rates, PNR, and DEA rates. However, a triggering effect of biogas slurry on soil N2O emission was observed, although there was no correlation between biogas slurry rates and N2O emission rates. Factorial ANOVA showed a significant effect of biogas slurry and its interaction with biochar on the relative abundance of bacterial denitrifying and nitrifying functional genes. Additionally, significant correlations of N2O emission rates with PNR rates and NO3- concentration indicated that nitrification was the dominant pathway of N2O emission. Thus, a single biochar application did not mitigate N2O emission rates induced by biogas slurry on a long-term scale.
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Affiliation(s)
- Xiaolin Liao
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Yajuan Chen
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Honghua Ruan
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Saadatullah Malghani
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China.
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