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Bei Q, Reitz T, Schädler M, Hodgskiss LH, Peng J, Schnabel B, Buscot F, Eisenhauer N, Schleper C, Heintz-Buschart A. Metabolic potential of Nitrososphaera-associated clades. THE ISME JOURNAL 2024; 18:wrae086. [PMID: 38742714 PMCID: PMC11131427 DOI: 10.1093/ismejo/wrae086] [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: 12/07/2023] [Revised: 02/13/2024] [Accepted: 05/11/2024] [Indexed: 05/16/2024]
Abstract
Soil ammonia-oxidizing archaea (AOA) play a crucial role in converting ammonia to nitrite, thereby mobilizing reactive nitrogen species into their soluble form, with a significant impact on nitrogen losses from terrestrial soils. Yet, our knowledge regarding their diversity and functions remains limited. In this study, we reconstructed 97 high-quality AOA metagenome-assembled genomes (MAGs) from 180 soil samples collected in Central Germany during 2014-2019 summers. These MAGs were affiliated with the order Nitrososphaerales and clustered into four family-level clades (NS-α/γ/δ/ε). Among these MAGs, 75 belonged to the most abundant but least understood δ-clade. Within the δ-clade, the amoA genes in three MAGs from neutral soils showed a 99.5% similarity to the fosmid clone 54d9, which has served as representative of the δ-clade for the past two decades since even today no cultivated representatives are available. Seventy-two MAGs constituted a distinct δ sub-clade, and their abundance and expression activity were more than twice that of other MAGs in slightly acidic soils. Unlike the less abundant clades (α, γ, and ε), the δ-MAGs possessed multiple highly expressed intracellular and extracellular carbohydrate-active enzymes responsible for carbohydrate binding (CBM32) and degradation (GH5), along with highly expressed genes involved in ammonia oxidation. Together, these results suggest metabolic versatility of uncultured soil AOA and a potential mixotrophic or chemolithoheterotrophic lifestyle among 54d9-like AOA.
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Affiliation(s)
- Qicheng Bei
- Department of Soil Ecology, Helmholtz Centre for Environmental Research – UFZ, 06120 Halle (Saale), Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
- Department of Biological Sciences, University of Southern California, Los Angeles, CA 90089, United States
| | - Thomas Reitz
- Department of Soil Ecology, Helmholtz Centre for Environmental Research – UFZ, 06120 Halle (Saale), Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
| | - Martin Schädler
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
- Department of Community Ecology, Helmholtz Centre for Environmental Research – UFZ, 06120 Halle (Saale), Germany
| | - Logan H Hodgskiss
- Archaea Biology and Ecogenomics Unit, Department of Functional and Evolutionary Ecology, University of Vienna, 1030 Vienna, Austria
| | - Jingjing Peng
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Beatrix Schnabel
- Department of Soil Ecology, Helmholtz Centre for Environmental Research – UFZ, 06120 Halle (Saale), Germany
| | - François Buscot
- Department of Soil Ecology, Helmholtz Centre for Environmental Research – UFZ, 06120 Halle (Saale), Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
| | - Nico Eisenhauer
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
- Institute of Biology, Leipzig University, 04103 Leipzig, Germany
| | - Christa Schleper
- Archaea Biology and Ecogenomics Unit, Department of Functional and Evolutionary Ecology, University of Vienna, 1030 Vienna, Austria
| | - Anna Heintz-Buschart
- Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, the Netherlands
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2
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Defining Composition and Function of the Rhizosphere Microbiota of Barley Genotypes Exposed to Growth-Limiting Nitrogen Supplies. mSystems 2022; 7:e0093422. [PMID: 36342125 PMCID: PMC9765016 DOI: 10.1128/msystems.00934-22] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The microbiota populating the rhizosphere, the interface between roots and soil, can modulate plant growth, development, and health. These microbial communities are not stochastically assembled from the surrounding soil, but their composition and putative function are controlled, at least partially, by the host plant. Here, we use the staple cereal barley as a model to gain novel insights into the impact of differential applications of nitrogen, a rate-limiting step for global crop production, on the host genetic control of the rhizosphere microbiota. Using a high-throughput amplicon sequencing survey, we determined that nitrogen availability for plant uptake is a factor promoting the selective enrichment of individual taxa in the rhizosphere of wild and domesticated barley genotypes. Shotgun sequencing and metagenome-assembled genomes revealed that this taxonomic diversification is mirrored by a functional specialization, manifested by the differential enrichment of multiple Gene Ontology terms, of the microbiota of plants exposed to nitrogen conditions limiting barley growth. Finally, a plant soil feedback experiment revealed that host control of the barley microbiota underpins the assembly of a phylogenetically diverse group of bacteria putatively required to sustain plant performance under nitrogen-limiting supplies. Taken together, our observations indicate that under nitrogen conditions limiting plant growth, host-microbe and microbe-microbe interactions fine-tune the host genetic selection of the barley microbiota at both taxonomic and functional levels. The disruption of these recruitment cues negatively impacts plant growth. IMPORTANCE The microbiota inhabiting the rhizosphere, the thin layer of soil surrounding plant roots, can promote the growth, development, and health of their host plants. Previous research indicated that differences in the genetic composition of the host plant coincide with variations in the composition of the rhizosphere microbiota. This is particularly evident when looking at the microbiota associated with input-demanding modern cultivated varieties and their wild relatives, which have evolved under marginal conditions. However, the functional significance of these differences remains to be fully elucidated. We investigated the rhizosphere microbiota of wild and cultivated genotypes of the global crop barley and determined that nutrient conditions limiting plant growth amplify the host control on microbes at the root-soil interface. This is reflected in a plant- and genotype-dependent functional specialization of the rhizosphere microbiota, which appears to be required for optimal plant growth. These findings provide novel insights into the significance of the rhizosphere microbiota for plant growth and sustainable agriculture.
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3
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Maver M, Escudero-Martinez C, Abbott J, Morris J, Hedley PE, Mimmo T, Bulgarelli D. Applications of the indole-alkaloid gramine modulate the assembly of individual members of the barley rhizosphere microbiota. PeerJ 2021; 9:e12498. [PMID: 34900424 PMCID: PMC8614190 DOI: 10.7717/peerj.12498] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/25/2021] [Indexed: 12/30/2022] Open
Abstract
Microbial communities proliferating at the root-soil interface, collectively referred to as the rhizosphere microbiota, represent an untapped beneficial resource for plant growth, development and health. Integral to a rational manipulation of the microbiota for sustainable agriculture is the identification of the molecular determinants of these communities. In plants, biosynthesis of allelochemicals is centre stage in defining inter-organismal relationships in the environment. Intriguingly, this process has been moulded by domestication and breeding selection. The indole-alkaloid gramine, whose occurrence in barley (Hordeum vulgare L.) is widespread among wild genotypes but has been counter selected in several modern varieties, is a paradigmatic example of this phenomenon. This prompted us to investigate how exogenous applications of gramine impacted on the rhizosphere microbiota of two, gramine-free, elite barley varieties grown in a reference agricultural soil. High throughput 16S rRNA gene amplicon sequencing revealed that applications of gramine interfere with the proliferation of a subset of soil microbes with a relatively broad phylogenetic assignment. Strikingly, growth of these bacteria appeared to be rescued by barley plants in a genotype- and dosage-independent manner. In parallel, we discovered that host recruitment cues can interfere with the impact of gramine application in a host genotype-dependent manner. Interestingly, this latter effect displayed a bias for members of the phyla Proteobacteria. These initial observations indicate that gramine can act as a determinant of the prokaryotic communities inhabiting the root-soil interface.
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Affiliation(s)
- Mauro Maver
- Plant Sciences, School of Life Sciences, University of Dundee, Dundee, United Kingdom.,Faculty of Science and Technology, Free University of Bozen-Bolzano, Bolzano, Italy.,Competence Centre for Plant Health, Free University of Bozen-Bolzano, Bolzano, Italy
| | | | - James Abbott
- Data Analysis Group, School of Life Sciences, University of Dundee, Dundee, United Kingdom
| | - Jenny Morris
- Cell and Molecular Sciences, The James Hutton Institute, Dundee, United Kingdom
| | - Pete E Hedley
- Cell and Molecular Sciences, The James Hutton Institute, Dundee, United Kingdom
| | - Tanja Mimmo
- Faculty of Science and Technology, Free University of Bozen-Bolzano, Bolzano, Italy.,Competence Centre for Plant Health, Free University of Bozen-Bolzano, Bolzano, Italy
| | - Davide Bulgarelli
- Plant Sciences, School of Life Sciences, University of Dundee, Dundee, United Kingdom
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4
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Allegrini M, Morales ME, Villamil MB, Zabaloy MC. Ammonia Oxidizing Prokaryotes Respond Differently to Fertilization and Termination Methods in Common Oat's Rhizosphere. Front Microbiol 2021; 12:746524. [PMID: 34690996 PMCID: PMC8527175 DOI: 10.3389/fmicb.2021.746524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 09/06/2021] [Indexed: 11/13/2022] Open
Abstract
Cover crops (CC) have demonstrated beneficial effects on several soil properties yet questions remain regarding their effects on soil microbial communities. Among them, ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) have a key role for N cycling in soil and their responses in the rhizosphere of terminated CC deserve further investigation. A greenhouse experiment was established to assess N fertilization (with or without N) and termination methods (glyphosate, mowing, and untreated control) of common oat (Avena sativa L.) as potential drivers of AOA and AOB responses in the rhizosphere. The abundance of amoA genes was determined by quantitative real-time PCR (qPCR), the community structure was assessed with Illumina amplicon sequencing of these genes, while the function was assessed from potential nitrification activity (PNA). While N fertilization had no influence on AOA, the termination method significantly increased amoA gene copies of AOA in mowed plants relative to glyphosate termination or the untreated control (1.76 and 1.49-fold change, respectively), and shifted AOA community structure (PERMANOVA, p<0.05). Ordination methods indicated a separation between AOA communities from control and glyphosate-terminated plants relative to mowed plants for both UniFrac and Aitchison distance. Converserly, N fertilization significantly increased AOB abundance in the rhizosphere of mowed and control plants, yet not in glyphosate-treated plants. Analyses of community structure showed that AOB changed only in response to N fertilization and not to the termination method. In line with these results, significantly higher PNA values were measured in all fertilized samples, regardless of the termination methods. Overall, the results of this study indicated that bacterial and archaeal nitrifiers have contrasting responses to fertlization and plant termination methods. While AOA were responsive to the termination method, AOB were more sensitive to N additions, although, the stimulative effect of N fertilization on amoAAOB abundance was dependent on the termination method.
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Affiliation(s)
- Marco Allegrini
- Instituto de Investigaciones en Ciencias Agrarias de Rosario (IICAR), CONICET, Universidad Nacional de Rosario, Zavalla, Argentina
| | - Marianela E Morales
- Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS), Universidad Nacional del Sur (UNS)-CONICET, Bahía Blanca, Argentina
| | - Maria B Villamil
- Department of Crop Sciences, University of Illinois, Urbana, IL, United States
| | - María Celina Zabaloy
- Centro de Recursos Naturales Renovables de la Zona Semiárida (CERZOS), Universidad Nacional del Sur (UNS)-CONICET, Bahía Blanca, Argentina.,Departamento de Agronomía, Universidad Nacional del Sur, Bahía Blanca, Argentina
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5
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Haiming T, Chao L, Kaikai C, Lihong S, Li W, Weiyan L, Xiaoping X, Ke W. Effects of short-term soil tillage practice on activity and community structure of ammonia-oxidizing bacteria and archaea under the double-cropping rice field. J Appl Microbiol 2021; 132:1307-1318. [PMID: 34487604 DOI: 10.1111/jam.15289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 09/01/2021] [Accepted: 09/02/2021] [Indexed: 11/27/2022]
Abstract
AIMS The potential nitrification activity (PNA), population size and community composition of ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) in paddy soil from a short-term (5 years) tillage field experiment conducted at tillering stage of late rice were investigated using the shaken slurry method and quantitative real-time polymerase chain reaction. METHODS AND RESULTS The experiment included four tillage treatments: conventional tillage with crop residue incorporation (CT), rotary tillage with crop residue incorporation (RT), no-tillage with crop residue returning (NT) and rotary tillage with all crop residues removed as a control (RTO). The results showed that PNA in paddy soil of CT, RT and NT treatments was higher than that of RTO treatment, and the abundance of AOA and AOB was much higher in paddy soil of CT, RT and NT treatments than RTO treatment. Meanwhile, PNA and the abundance of AOB and AOA in paddy soil were greatly enhanced by combined application of tillage and crop residue, whereas PNA and the abundance of AOB and AOA in paddy soil were decreased by combined application of no-tillage and crop residue. Moreover, PNA was closely correlated with the abundance and community structure of AOB rather than AOA. The results also showed that PNA and the population sizes of AOB and AOA in crop incorporation treatments were higher than that of crop residue removed treatment. Cluster and redundancy analyses indicated that crop residue effect played a more important role in shaping AOA community structure compared to short-term tillage management. CONCLUSIONS The results indicated that AOB rather than AOA functionally dominated ammonia oxidation in the double-cropping rice paddy soil, the activities of AOB and AOA were increased and the community structure was also changed under the combination of conventional tillage, rotary tillage and crop residue condition. SIGNIFICANCE AND IMPACT OF STUDY The activity and community structure of AOB and AOA, which were affected by the combination of tillage and crop residue managements, play an important role in cycling of nitrogen.
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Affiliation(s)
- Tang Haiming
- Hunan Soil and Fertilizer Institute, Changsha, China
| | - Li Chao
- Hunan Soil and Fertilizer Institute, Changsha, China
| | - Cheng Kaikai
- Hunan Soil and Fertilizer Institute, Changsha, China
| | - Shi Lihong
- Hunan Soil and Fertilizer Institute, Changsha, China
| | - Wen Li
- Hunan Soil and Fertilizer Institute, Changsha, China
| | - Li Weiyan
- Hunan Soil and Fertilizer Institute, Changsha, China
| | - Xiao Xiaoping
- Hunan Soil and Fertilizer Institute, Changsha, China
| | - Wang Ke
- Hunan Soil and Fertilizer Institute, Changsha, China
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6
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Nardi P, Laanbroek HJ, Nicol GW, Renella G, Cardinale M, Pietramellara G, Weckwerth W, Trinchera A, Ghatak A, Nannipieri P. Biological nitrification inhibition in the rhizosphere: determining interactions and impact on microbially mediated processes and potential applications. FEMS Microbiol Rev 2021; 44:874-908. [PMID: 32785584 DOI: 10.1093/femsre/fuaa037] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 08/10/2020] [Indexed: 12/11/2022] Open
Abstract
Nitrification is the microbial conversion of reduced forms of nitrogen (N) to nitrate (NO3-), and in fertilized soils it can lead to substantial N losses via NO3- leaching or nitrous oxide (N2O) production. To limit such problems, synthetic nitrification inhibitors have been applied but their performance differs between soils. In recent years, there has been an increasing interest in the occurrence of biological nitrification inhibition (BNI), a natural phenomenon according to which certain plants can inhibit nitrification through the release of active compounds in root exudates. Here, we synthesize the current state of research but also unravel knowledge gaps in the field. The nitrification process is discussed considering recent discoveries in genomics, biochemistry and ecology of nitrifiers. Secondly, we focus on the 'where' and 'how' of BNI. The N transformations and their interconnections as they occur in, and are affected by, the rhizosphere, are also discussed. The NH4+ and NO3- retention pathways alternative to BNI are reviewed as well. We also provide hypotheses on how plant compounds with putative BNI ability can reach their targets inside the cell and inhibit ammonia oxidation. Finally, we discuss a set of techniques that can be successfully applied to solve unresearched questions in BNI studies.
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Affiliation(s)
- Pierfrancesco Nardi
- Consiglio per la ricerca e l'analisi dell'economia agraria - Research Centre for Agriculture and Environment (CREA-AA), Via della Navicella 2-4, Rome 00184, Italy
| | - Hendrikus J Laanbroek
- Department of Microbial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB Wageningen, The Netherlands; Ecology and Biodiversity Group, Department of Biology, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Graeme W Nicol
- Laboratoire Ampère, École Centrale de Lyon, Université de Lyon, Ecully, 69134, France
| | - Giancarlo Renella
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Viale dell'Università 16, 35020 Legnaro, Italy
| | - Massimiliano Cardinale
- Department of Biological and Environmental Sciences and Technologies - DiSTeBA, University of Salento, Centro Ecotekne - via Provinciale Lecce-Monteroni, I-73100, Lecce, Italy
| | - Giacomo Pietramellara
- Department of Agriculture, Food, Environment and Forestry, University of Firenze, P.le delle Cascine 28, Firenze 50144, Italy
| | - Wolfram Weckwerth
- Molecular Systems Biology (MOSYS), Department of Functional and Evolutionary Ecology, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, Vienna, 1090, Austria; Vienna Metabolomics Center (VIME), University of Vienna, Althanstrasse 14, Vienna, 1090, Austria
| | - Alessandra Trinchera
- Consiglio per la ricerca e l'analisi dell'economia agraria - Research Centre for Agriculture and Environment (CREA-AA), Via della Navicella 2-4, Rome 00184, Italy
| | - Arindam Ghatak
- Molecular Systems Biology (MOSYS), Department of Functional and Evolutionary Ecology, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, Vienna, 1090, Austria
| | - Paolo Nannipieri
- Department of Agriculture, Food, Environment and Forestry, University of Firenze, P.le delle Cascine 28, Firenze 50144, Italy
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7
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Wu H, Hao B, Cai Y, Liu G, Xing W. Effects of submerged vegetation on sediment nitrogen-cycling bacterial communities in Honghu Lake (China). THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 755:142541. [PMID: 33039889 DOI: 10.1016/j.scitotenv.2020.142541] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/09/2020] [Accepted: 09/19/2020] [Indexed: 06/11/2023]
Abstract
Sediment nitrogen (N) cycling is an important biological removal process for N permanently and driven by N-cycling microbial community. There is a growing interest in interactions between submerged vegetation (SV) and sediment N-cycling bacterial community, because of the close link between rooted aquatic plants and the sediment microbes. However, the effects of SV on the sediment N-cycling bacterial community are still controversial. Furthermore, the discrimination of direct and indirect effects of SV on the N-cycling bacterial community remains unclear. Here, we investigated the biomass and species richness of SV and determined the corresponding environment factors (water quality and sediment properties) in Honghu Lake (China). We also used functional genes as markers to unveil the bacterial diversity and community composition and abundance in lake sediments. Our results showed that biomass and species richness of SV affected the composition, diversity and abundance of sediment N-cycling bacterial communities through improving lake water quality and sediment properties. With the increasing richness and abundance of SV, the diversity of most N-cycling bacterial assemblages including nitrifying, denitrifying and DNRA bacteria decreased, while the abundance increased. However, the anammox bacterial assemblage in sediments showed inverse trends. Sediment carbon vs. nitrogen (C:N) ratio negatively affected the abundance of amoA and nirS + nirK + nosZ bacterial assemblages. Additionally, due to the presence of SV, positive interactions among N-cycling bacterial assemblages were found, such as amoA and nrfA bacterial assemblages. Overall, our findings confirmed the significant effects of SV on the N-cycling bacterial community structure and abundance. Moreover, the direct effects of SV on the N-cycling bacterial community and the indirect effects through altering the sediment C were clarified in our study. Our results casted a new light on the negative effects of high C:N ratio. From the study, we made a conclusion that the better SV develops, the greater nitrogen removal occurs in lake sediments.
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Affiliation(s)
- Haoping Wu
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China; CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Beibei Hao
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China; CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Yanpeng Cai
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Guihua Liu
- CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; Center for Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan 430074, China
| | - Wei Xing
- CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China; Center for Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Wuhan 430074, China.
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8
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Ding GC, Bai M, Han H, Li H, Ding X, Yang H, Xu T, Li J. Microbial taxonomic, nitrogen cycling and phosphorus recycling community composition during long-term organic greenhouse farming. FEMS Microbiol Ecol 2020; 95:5423879. [PMID: 30927421 DOI: 10.1093/femsec/fiz042] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 03/29/2019] [Indexed: 11/14/2022] Open
Abstract
Understanding the interplay between the farming system and soil microbiomes could aid the design of a sustainable and efficient farming system. A comparative greenhouse experiment consisting of organic (ORG), integrated (INT) and conventional (CON) farming systems was established in northern China in 2002. The effects of 12 years of organic farming on soil microbiomes were explored by metagenomic and 16S rRNA gene amplicon sequencing analyses. Long-term ORG shifted the community composition of dominant phyla, especially Acidobacteria, increased the relative abundance of Ignavibacteria and Acidobacteria Gp6 and decreased the relative abundance of Nitrosomonas, Bacillus and Paenibacillus. Metagenomic analysis further revealed that relative abundance of ammonia oxidizing microorganisms (Bacteria and Archaea) and anaerobic ammonium oxidation bacteria decreased during ORG. Conversely, the relative abundance of bacteria-carrying periplasmic nitrate reductases (napA) was slightly higher for ORG. Long-term organic farming also caused significant alterations to the community composition of functional groups associated with ammonia oxidation, denitrification and phosphorus recycling. In summary, this study provides key insights into the composition of soil microbiomes and long-term organic farming under greenhouse conditions.
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Affiliation(s)
- Guo-Chun Ding
- Beijing Key Laboratory of Biodiversity and Organic Farming, Department of Ecology and Ecological Engineering, College of Resources and Environmental Science, China Agricultural University,100193, Beijing, China.,Organic Recycling Institute(Suzhou) of China Agricultural University,215128, Wuzhong, Jiangsu Province, China
| | - Mohan Bai
- Beijing Key Laboratory of Biodiversity and Organic Farming, Department of Ecology and Ecological Engineering, College of Resources and Environmental Science, China Agricultural University,100193, Beijing, China
| | - Hui Han
- Beijing Key Laboratory of Biodiversity and Organic Farming, Department of Ecology and Ecological Engineering, College of Resources and Environmental Science, China Agricultural University,100193, Beijing, China
| | - Huixiu Li
- Beijing Key Laboratory of Biodiversity and Organic Farming, Department of Ecology and Ecological Engineering, College of Resources and Environmental Science, China Agricultural University,100193, Beijing, China
| | - Xiaoyan Ding
- Beijing Key Laboratory of Biodiversity and Organic Farming, Department of Ecology and Ecological Engineering, College of Resources and Environmental Science, China Agricultural University,100193, Beijing, China
| | - Hefa Yang
- Quzhou Experimental Station of China Agricultural University, 057250, Quzhou County, Hebei Province, China
| | - Ting Xu
- Beijing Key Laboratory of Biodiversity and Organic Farming, Department of Ecology and Ecological Engineering, College of Resources and Environmental Science, China Agricultural University,100193, Beijing, China.,Organic Recycling Institute(Suzhou) of China Agricultural University,215128, Wuzhong, Jiangsu Province, China
| | - Ji Li
- Beijing Key Laboratory of Biodiversity and Organic Farming, Department of Ecology and Ecological Engineering, College of Resources and Environmental Science, China Agricultural University,100193, Beijing, China.,Organic Recycling Institute(Suzhou) of China Agricultural University,215128, Wuzhong, Jiangsu Province, China
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9
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Ma W, Li J, Gao Y, Xing F, Sun S, Zhang T, Zhu X, Chen C, Li Z. Responses of soil extracellular enzyme activities and microbial community properties to interaction between nitrogen addition and increased precipitation in a semi-arid grassland ecosystem. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 703:134691. [PMID: 31731161 DOI: 10.1016/j.scitotenv.2019.134691] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/24/2019] [Accepted: 09/26/2019] [Indexed: 06/10/2023]
Abstract
Both atmospheric nitrogen (N) deposition and precipitation can strongly impact below-ground biogeochemical processes. Soil extracellular enzymes activities (EEAs) and microorganisms are considered as the key agents in ecosystem nutrient cycling. However, how the interaction between increasing N deposition and precipitation may affect soil EEAs and microbes remain poorly understood. In a 5-year field experiment in a meadow steppe in northern China, we tested the effects of N addition (N0, 0; N1, 5; N2, 10 g N m-2 yr-1) and increased precipitation (W0, ambient precipitation; W1, increase of 15% ambient precipitation; W2, increase of 30% ambient precipitation) on soil EEAs, microbial and chemical properties. Results showed that their interaction significantly affected all hydrolase activities, except for β-1,4-xylosidase (βX). Furthermore, increased precipitation and N addition interactively affected bacterial gene copies (P ≤ 0.05), and increased precipitation comparatively had a stronger effects. The results on the combination of N addition and increased precipitation showed that increased precipitation alleviated the positive effects of N addition on soil EEAs. This implies that the effects of either treatment alone on grassland biogeochemical processes may be alleviated by their simultaneous occurrence. Our results suggested that soil EEAs were mainly controlled by the content of N and phosphorus (P), and the ratio of C: N and C: P. Therefore, soil element content and stoichiometry could better explain the responses of EEAs to global changes. Moreover, soil microbial communities were mainly controlled by soil P content. Overall, our study highlights that the interaction between N deposition and precipitation may play a vital role in predicting the responses of soil enzyme activities to global changes in grassland ecosystems.
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Affiliation(s)
- Wenjun Ma
- Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China
| | - Jian Li
- Department of Biology, Lund University, Microbial Ecology, Ecology Building, Lund 22646, Sweden
| | - Ying Gao
- Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China.
| | - Fu Xing
- Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China.
| | - Shengnan Sun
- Institute of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China
| | - Tao Zhang
- Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China
| | - Xingzun Zhu
- Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China
| | - Chen Chen
- Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China
| | - Zhuo Li
- Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun 130024, China
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10
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Hou L, Liu R, Li N, Dai Y, Yan J. Study on the efficiency of phytoremediation of soils heavily polluted with PAHs in petroleum-contaminated sites by microorganism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:31401-31413. [PMID: 31485937 DOI: 10.1007/s11356-019-05828-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Accepted: 06/24/2019] [Indexed: 06/10/2023]
Abstract
The effects of Fire Phoenix (a mixture of Festuca L.) and Purple coneflower (Echinacea purpurea (L.) Moench) on the remediation of two different high concentrations of PAH-contaminated soils were studied under the effect of strain N12 (Mycobacterium sp.), and the changes in rhizosphere enzymatic activity were preliminarily studied. The results of three culture stages (60 d, 120 d, and 150 d) showed that N12 has a promotional effect on the biomass of Fire Phoenix and E. purpurea, and the effect of N12 on the biomass of Fire Phoenix is better. Under the strengthening of N12, the maximum removal rates of Fire Phoenix reached 86.77% and 67.82% at two high PAH concentrations (A and B, respectively). The activity of dehydrogenase (DHO) is positively correlated with the degradation rate of PAHs at the A concentration (P < 0.05). The activity of DHO in soil will continue to increase at a higher level of the B concentration, but the positive correlation between the activity of DHO and the degradation rate of PAH is weakened. In the rhizosphere soil of the two plants, the change in polyphenol oxidase (PPO) activity with time has a significant negative correlation with the degradation rate of PAHs (P < 0.05). The experiment proved that Fire Phoenix is more suitable for the remediation of heavy PAH-contaminated soil under the condition of microorganism-strengthening, and it can achieve a better degradation effect when the concentrations of PAHs are < 150 mg·kg-1. Results provide a further scientific basis for the remediation of contaminated sites.
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Affiliation(s)
- Liqun Hou
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, Liaoning, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Rui Liu
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, Liaoning, China.
| | - Na Li
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, Liaoning, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuanyuan Dai
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, Liaoning, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jun Yan
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, Liaoning, China
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11
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Diversity and community structure of ammonia oxidizers in a marsh wetland of the northeast China. Appl Microbiol Biotechnol 2018; 102:8561-8571. [DOI: 10.1007/s00253-018-9225-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 06/21/2018] [Accepted: 07/04/2018] [Indexed: 02/04/2023]
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12
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Compositional and abundance changes of nitrogen-cycling genes in plant-root microbiomes along a salt marsh chronosequence. Antonie Van Leeuwenhoek 2018; 111:2061-2078. [PMID: 29846874 DOI: 10.1007/s10482-018-1098-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 05/14/2018] [Indexed: 10/14/2022]
Abstract
Disentangling the relative influences of soil properties and plant-host on root-associated microbiomes in natural systems is challenging, given that spatially segregated soil types display distinct historical legacies. In addition, distant locations may also lead to biogeographical patterns of microbial communities. Here, we used an undisturbed salt marsh chronosequence spanning over a century of ecosystem development to investigate changes in the community composition and abundance of a set of nitrogen-cycling genes. Specifically, we targeted genes of diazotrophs and ammonia oxidizers associated with the bulk and rhizosphere soil of the plant species Limonium vulgare. Samples were collected across five distinct successional stages of the chronosequence (ranging from 5 to 105 years) at two time-points. Our results indicate that soil variables such as sand:silt:clay % content and pH strongly relates to the abundance of N-cycling genes in the bulk soil. However, in the rhizosphere samples, the abundance of ammonia-oxidizing organisms (both bacteria and archaea, AOB and AOA, respectively) was relatively constant across most of the successional stages, albeit displaying seasonal variation. This result indicates a potentially stronger control of plant host (rather than soil) on the abundance of these organisms. Interestingly, the plant host did not have a significant effect on the composition of AOA and AOB communities, being mostly divergent according to soil successional stages. The abundance of diazotrophic communities in rhizosphere samples was more affected by seasonality than those of bulk soil. Moreover, the abundance pattern of diazotrophs in the rhizosphere related to the systematic increase of plant biomass and soil organic matter along the successional gradient. These results suggest a potential season-dependent regulation of diazotrophs exerted by the plant host. Overall, this study contributes to a better understanding of how the natural formation of a soil and host plants influence the compositional and abundance changes of nitrogen-cycling genes in bulk and rhizosphere soil microhabitats.
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13
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Lourenço KS, Cassman NA, Pijl AS, van Veen JA, Cantarella H, Kuramae EE. Nitrosospira sp. Govern Nitrous Oxide Emissions in a Tropical Soil Amended With Residues of Bioenergy Crop. Front Microbiol 2018; 9:674. [PMID: 29692763 PMCID: PMC5902487 DOI: 10.3389/fmicb.2018.00674] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Accepted: 03/22/2018] [Indexed: 11/13/2022] Open
Abstract
Organic vinasse, a residue produced during bioethanol production, increases nitrous oxide (N2O) emissions when applied with inorganic nitrogen (N) fertilizer in soil. The present study investigated the role of the ammonia-oxidizing bacteria (AOB) community on the N2O emissions in soils amended with organic vinasse (CV: concentrated and V: non-concentrated) plus inorganic N fertilizer. Soil samples and N2O emissions were evaluated at 11, 19, and 45 days after fertilizer application, and the bacterial and archaea gene (amoA) encoding the ammonia monooxygenase enzyme, bacterial denitrifier (nirK, nirS, and nosZ) genes and total bacteria were quantified by real time PCR. We also employed a deep amoA amplicon sequencing approach to evaluate the effect of treatment on the community structure and diversity of the soil AOB community. Both vinasse types applied with inorganic N application increased the total N2O emissions and the abundance of AOB. Nitrosospira sp. was the dominant AOB in the soil and was correlated with N2O emissions. However, the diversity and the community structure of AOB did not change with vinasse and inorganic N fertilizer amendment. The results highlight the importance of residues and fertilizer management in sustainable agriculture and can be used as a reference and an input tool to determine good management practices for organic fertilization.
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Affiliation(s)
- Késia S Lourenço
- Department of Microbial Ecology, Netherlands Institute of Ecology, Wageningen, Netherlands.,Soils and Environmental Resources Center, Agronomic Institute of Campinas, Campinas, Brazil.,Institute of Biology Leiden, Leiden University, Leiden, Netherlands
| | - Noriko A Cassman
- Department of Microbial Ecology, Netherlands Institute of Ecology, Wageningen, Netherlands.,Institute of Biology Leiden, Leiden University, Leiden, Netherlands
| | - Agata S Pijl
- Department of Microbial Ecology, Netherlands Institute of Ecology, Wageningen, Netherlands
| | - Johannes A van Veen
- Department of Microbial Ecology, Netherlands Institute of Ecology, Wageningen, Netherlands.,Institute of Biology Leiden, Leiden University, Leiden, Netherlands
| | - Heitor Cantarella
- Soils and Environmental Resources Center, Agronomic Institute of Campinas, Campinas, Brazil
| | - Eiko E Kuramae
- Department of Microbial Ecology, Netherlands Institute of Ecology, Wageningen, Netherlands
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14
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Zhou X, Wang Z, Jia H, Li L, Wu F. Continuously Monocropped Jerusalem Artichoke Changed Soil Bacterial Community Composition and Ammonia-Oxidizing and Denitrifying Bacteria Abundances. Front Microbiol 2018; 9:705. [PMID: 29692769 PMCID: PMC5902710 DOI: 10.3389/fmicb.2018.00705] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 03/27/2018] [Indexed: 12/19/2022] Open
Abstract
Soil microbial communities have profound effects on the growth, nutrition and health of plants in agroecosystems. Understanding soil microbial dynamics in cropping systems can assist in determining how agricultural practices influence soil processes mediated by microorganisms. In this study, soil bacterial communities were monitored in a continuously monocropped Jerusalem artichoke (JA) system, in which JA was successively monocropped for 3 years in a wheat field. Soil bacterial community compositions were estimated by amplicon sequencing of the 16S rRNA gene. Abundances of ammonia-oxidizing and denitrifying bacteria were estimated by quantitative PCR analysis of the amoA, nirS, and nirK genes. Results showed that 1-2 years of monocropping of JA did not significantly impact the microbial alpha diversity, and the third cropping of JA decreased the microbial alpha diversity (P < 0.05). Principal coordinates analysis and permutational multivariate analysis of variance analyses revealed that continuous monocropping of JA changed soil bacterial community structure and function profile (P < 0.001). At the phylum level, the wheat field was characterized with higher relative abundances of Latescibacteria, Planctomycetes, and Cyanobacteria, the first cropping of JA with Actinobacteria, the second cropping of JA with Acidobacteria, Armatimonadetes, Gemmatimonadetes, and Proteobacteria. At the genus level, the first cropping of JA was enriched with bacterial species with pathogen-antagonistic and/or plant growth promoting potentials, while members of genera that included potential denitrifiers increased in the second and third cropping of JA. The first cropping of JA had higher relative abundances of KO terms related to lignocellulose degradation and phosphorus cycling, the second cropping of JA had higher relative abundances of KO terms nitrous-oxide reductase and nitric-oxide reductase, and the third cropping of JA had higher relative abundances of KO terms nitrate reductase and nitrite reductase. The abundances of amoA genes decreased while nirK increased in the third cropping of JA, nirS continuously increased in the second and third cropping of JA (P < 0.05). Redundancy analysis and Mantel test found that soil organic carbon and Olsen phosphorus contents played important roles in shaping soil bacterial communities. Overall, our results revealed that continuous monocropping of JA changed soil bacterial community composition and its functional potentials.
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Affiliation(s)
- Xingang Zhou
- Department of Horticulture, Northeast Agricultural University, Harbin, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Northeast Region, Ministry of Agriculture, Harbin, China
| | - Zhilin Wang
- Department of Horticulture, Northeast Agricultural University, Harbin, China
| | - Huiting Jia
- Department of Horticulture, Northeast Agricultural University, Harbin, China
| | - Li Li
- Institute of Horticulture, Qinghai Academy of Agriculture and Forestry Sciences, Xining, China
| | - Fengzhi Wu
- Department of Horticulture, Northeast Agricultural University, Harbin, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops, Northeast Region, Ministry of Agriculture, Harbin, China
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15
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Illarze G, Del Pino A, Riccetto S, Irisarri P. [Nitrous oxide emission, nitrification, denitrification and nitrogen mineralization during rice growing season in 2 soils from Uruguay]. Rev Argent Microbiol 2017; 50:97-104. [PMID: 28951080 DOI: 10.1016/j.ram.2017.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 05/02/2017] [Accepted: 05/09/2017] [Indexed: 11/16/2022] Open
Abstract
Microbial processes such as mineralization, nitrification and denitrification regulate nitrogen dynamics in the soil. The last two processes may produce nitrous oxide (N2O). In this work N2O fluxes were quantified at four moments of the rice cycle, sowing, tillering, panicle initiation and maturity, in two sites that differed mainly in their soil organic matter (OM) content, Salto (higher OM) and Treinta y Tres. Potential net N mineralization, ammonium oxidation and denitrification as well as the most probable numbers (MPN) of ammonia oxidizers and denitrifiers were determined. Potential N mineralization did not vary with the soil type and increased at rice maturity. Neither ammonia oxidation potential nor MPN were different among the soils. However, the soil with higher OM exhibited higher activity and MPN of denitrifiers, irrespective of the rice stage. In turn, at the latest phases of the crop, the MPN of denitrifiers increased coinciding with the highest mineralization potential and mineral N content of the soil. Significant differences in N2O flux were observed in Salto, where the highest emissions were detected at rice maturity, after the soil was drained (44.2 vs 20.8g N-N2O/ha d in Treinta y Tres). This work shows the importance of considering the soil type and end-of-season drainage of the rice field to elaborate GHGs (greenhouse gases) inventories.
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Affiliation(s)
- Gabriela Illarze
- Laboratorio de Microbiología, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay.
| | - Amabelia Del Pino
- Departamento de Suelos y Aguas, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay
| | - Sara Riccetto
- INIA Treinta y Tres, Instituto Nacional de Investigación Agropecuaria, Treinta y Tres, Uruguay
| | - Pilar Irisarri
- Laboratorio de Microbiología, Facultad de Agronomía, Universidad de la República, Montevideo, Uruguay
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16
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He Y, Hu W, Ma D, Lan H, Yang Y, Gao Y. Abundance and diversity of ammonia-oxidizing archaea and bacteria in the rhizosphere soil of three plants in the Ebinur Lake wetland. Can J Microbiol 2017; 63:573-582. [DOI: 10.1139/cjm-2016-0492] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Ammonia oxidation is carried out by ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA). The Ebinur Lake wetland is the best example of a temperate arid zone wetland ecosystem in China. Soil samples were collected from rhizosphere and non-rhizosphere soil containing Halocnemum strobilaceum (samples H and H′), Phragmites australis (samples R and R′), and Karelinia caspia (samples K and K′) to study the relationship between environmental factors and the community structure of AOB and AOA. Phylogenetic analysis showed that the AOA sequences belonged to the Nitrosopumilus and Nitrososphaera clusters. AOB were grouped into Nitrosospira sp. and Nitrosomonas sp. Quantitative polymerase chain reaction results showed that the AOA abundance ranged from 2.09 × 104 to 2.94 × 105 gene copies/g soil. The highest number of AOA was detected in sample K, followed by samples R and H. AOB abundance varied between 2.91 × 105 and 1.05 × 106 gene copies/g soil, which was higher than that of AOA. Redundancy analysis indicated that electrical conductivity, pH, and NH4+-N might influence the community structure of AOA and AOB. AOB might play a more crucial role than AOA in ammonia oxidation based on AOB’s higher diversity and abundance in the Ebinur Lake wetland in Xinjiang.
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Affiliation(s)
- Yuan He
- College of Life Science, Shihezi University, Shihezi, Xinjiang, People’s Republic of China, 832000
- College of Life Science, Shihezi University, Shihezi, Xinjiang, People’s Republic of China, 832000
| | - Wenge Hu
- College of Life Science, Shihezi University, Shihezi, Xinjiang, People’s Republic of China, 832000
- College of Life Science, Shihezi University, Shihezi, Xinjiang, People’s Republic of China, 832000
| | - Decao Ma
- College of Life Science, Shihezi University, Shihezi, Xinjiang, People’s Republic of China, 832000
- College of Life Science, Shihezi University, Shihezi, Xinjiang, People’s Republic of China, 832000
| | - Hongzhu Lan
- College of Life Science, Shihezi University, Shihezi, Xinjiang, People’s Republic of China, 832000
- College of Life Science, Shihezi University, Shihezi, Xinjiang, People’s Republic of China, 832000
| | - Yang Yang
- College of Life Science, Shihezi University, Shihezi, Xinjiang, People’s Republic of China, 832000
- College of Life Science, Shihezi University, Shihezi, Xinjiang, People’s Republic of China, 832000
| | - Yan Gao
- College of Life Science, Shihezi University, Shihezi, Xinjiang, People’s Republic of China, 832000
- College of Life Science, Shihezi University, Shihezi, Xinjiang, People’s Republic of China, 832000
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17
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Munroe JW, McCormick I, Deen W, Dunfield KE. Effects of 30 Years of Crop Rotation and Tillage on Bacterial and Archaeal Ammonia Oxidizers. JOURNAL OF ENVIRONMENTAL QUALITY 2016; 45:940-948. [PMID: 27136161 DOI: 10.2134/jeq2015.06.0331] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Ammonia-oxidizing bacteria (AOB) and archaea (AOA) both mediate soil nitrification and may have specialized niches in the soil. Little is understood of how these microorganisms are affected by long-term crop rotation and tillage practices. In this study, we assessed abundance and gene expression of AOB and AOA under two contrasting crop rotations and tillage regimes at a 30-yr-old long-term experiment on a Canadian silt loam soil. Continuous corn ( L.) (CC) was compared with a corn-corn-soybean [ (L.) Merr.]-winter wheat ( L.) rotation under-seeded with red clover ( L.) (RC), with conventional tillage (CT) and no-till (NT) as subplot treatments. Soil sampling was performed during the first corn year at four time points throughout the 2010 season and at three discrete depths (0-5, 5-15, and 15-30 cm). Overall, AOA abundance was found to be more than 10 times that of AOB, although AOA transcriptional activity was below detectable levels across all treatments. Crop rotation had a marginally significant effect on AOB abundance, with 1.3 times as many gene copies under the simpler CC rotation than under the more diverse RC rotation. More pronounced effects of depth on AOB abundance and gene expression were observed under NT versus CT management, and NT supported higher abundances of total archaea and AOA than CT across the growing season. We suggest that AOB may be more functionally important than AOA in this high-input agricultural soil but that NT management can promote enhanced soil archaeal populations.
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18
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Thion CE, Poirel JD, Cornulier T, De Vries FT, Bardgett RD, Prosser JI. Plant nitrogen-use strategy as a driver of rhizosphere archaeal and bacterial ammonia oxidiser abundance. FEMS Microbiol Ecol 2016; 92:fiw091. [DOI: 10.1093/femsec/fiw091] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2016] [Indexed: 01/03/2023] Open
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19
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Zhang J, Zhou X, Chen L, Chen Z, Chu J, Li Y. Comparison of the abundance and community structure of ammonia oxidizing prokaryotes in rice rhizosphere under three different irrigation cultivation modes. World J Microbiol Biotechnol 2016; 32:85. [DOI: 10.1007/s11274-016-2042-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 02/29/2016] [Indexed: 11/24/2022]
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20
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Su JF, Cheng C, Huang TL, Ma F, Lu JS, Shao SC. Novel simultaneous Fe(iii) reduction and ammonium oxidation of Klebsiella sp. FC61 under the anaerobic conditions. RSC Adv 2016. [DOI: 10.1039/c5ra25507d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A simultaneous Fe(iii) reduction and ammonium oxidation of strain FC61 was isolated from the Tang Yu oligotrophic reservoir of Xi'an (China).
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Affiliation(s)
- Jun feng Su
- School of Environmental and Municipal Engineering
- Xi'an University of Architecture and Technology
- Xi'an 710055
- China
- State Key Laboratory of Urban Water Resource and Environment
| | - Ce Cheng
- School of Environmental and Municipal Engineering
- Xi'an University of Architecture and Technology
- Xi'an 710055
- China
| | - Ting lin Huang
- School of Environmental and Municipal Engineering
- Xi'an University of Architecture and Technology
- Xi'an 710055
- China
| | - Fang Ma
- State Key Laboratory of Urban Water Resource and Environment
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Jin suo Lu
- School of Environmental and Municipal Engineering
- Xi'an University of Architecture and Technology
- Xi'an 710055
- China
| | - Si cheng Shao
- School of Environmental and Municipal Engineering
- Xi'an University of Architecture and Technology
- Xi'an 710055
- China
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21
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Distribution of ammonia-oxidizing archaea and bacteria in plateau soils across different land use types. Appl Microbiol Biotechnol 2015; 99:6899-909. [DOI: 10.1007/s00253-015-6625-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 04/13/2015] [Accepted: 04/16/2015] [Indexed: 10/23/2022]
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22
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Caliz J, Montes-Borrego M, Triadó-Margarit X, Metsis M, Landa BB, Casamayor EO. Influence of edaphic, climatic, and agronomic factors on the composition and abundance of nitrifying microorganisms in the rhizosphere of commercial olive crops. PLoS One 2015; 10:e0125787. [PMID: 25950678 PMCID: PMC4423868 DOI: 10.1371/journal.pone.0125787] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 03/25/2015] [Indexed: 01/11/2023] Open
Abstract
The microbial ecology of the nitrogen cycle in agricultural soils is an issue of major interest. We hypothesized a major effect by farm management systems (mineral versus organic fertilizers) and a minor influence of soil texture and plant variety on the composition and abundance of microbial nitrifiers. We explored changes in composition (16S rRNA gene) of ammonia-oxidizing archaea (AOA), bacteria (AOB), and nitrite-oxidizing bacteria (NOB), and in abundance of AOA and AOB (qPCR of amoA genes) in the rhizosphere of 96 olive orchards differing in climatic conditions, agricultural practices, soil properties, and olive variety. Majority of archaea were 1.1b thaumarchaeota (soil crenarchaeotic group, SCG) closely related to the AOA genus Nitrososphaera. Most AOB (97%) were identical to Nitrosospira tenuis and most NOB (76%) were closely related to Nitrospira sp. Common factors shaping nitrifiers assemblage composition were pH, soil texture, and olive variety. AOB abundance was positively correlated with altitude, pH, and clay content, whereas AOA abundances showed significant relationships with organic nitrogen content and exchangeable K. The abundances of AOA differed significantly among soil textures and olive varieties, and those of AOB among soil management systems and olive varieties. Overall, we observed minor effects by orchard management system, soil cover crop practices, plantation age, or soil organic matter content, and major influence of soil texture, pH, and olive tree variety.
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Affiliation(s)
- Joan Caliz
- Biogeodynamics & Biodiversity Group, Centro de Estudios Avanzados de Blanes, CEAB-CSIC, Blanes, Girona
| | - Miguel Montes-Borrego
- Institute for Sustainable Agriculture, Spanish National Research Council (CSIC), Campus de Excelencia Internacional Agroalimentario (ceiA3), Córdoba, Spain
| | - Xavier Triadó-Margarit
- Biogeodynamics & Biodiversity Group, Centro de Estudios Avanzados de Blanes, CEAB-CSIC, Blanes, Girona
| | - Madis Metsis
- Tallinn University, Institute of Mathematics and Natural Sciences, Narva mnt 25, Tallinn 10120, Estonia
| | - Blanca B. Landa
- Institute for Sustainable Agriculture, Spanish National Research Council (CSIC), Campus de Excelencia Internacional Agroalimentario (ceiA3), Córdoba, Spain
| | - Emilio O. Casamayor
- Biogeodynamics & Biodiversity Group, Centro de Estudios Avanzados de Blanes, CEAB-CSIC, Blanes, Girona
- * E-mail:
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23
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Zhang Y, Chen L, Dai T, Sun R, Wen D. Ammonia manipulates the ammonia-oxidizing archaea and bacteria in the coastal sediment-water microcosms. Appl Microbiol Biotechnol 2015; 99:6481-91. [PMID: 25797330 DOI: 10.1007/s00253-015-6524-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 03/02/2015] [Accepted: 03/03/2015] [Indexed: 12/14/2022]
Abstract
Ammonia was observed as a potential significant factor to manipulate the abundance and activity of ammonia-oxidizing microorganisms (AOMs) in water environments. For the first time, this study confirmed this phenomenon by laboratory cultivation. In a series of estuarine sediment-coastal water microcosms, we investigated the AOM's phylogenetic composition and activity change in response to ammonia concentration. Increase of ammonia concentration promoted bacterial amoA gene abundance in a linear pattern. The ratio of transcribed ammonia-oxidizing bacteria (AOB) amoA gene/ammonia-oxidizing archaea (AOA) amoA gene increased from 0.1 to 43 as NH4 (+)-N increased from less than 0.1 to 12 mg L(-1), and AOA amoA transcription was undetected under 20 mg NH4 (+)-N L(-1). The incubation of stable isotope probing (SIP) microcosms revealed a faster (13)C-NaHCO3 incorporation rate of AOA amoA gene under 0.1 mg NH4 (+)-N L(-1) and a sole (13)C-NaHCO3 utilization of the AOB amoA gene under 20 mg NH4 (+)-N L(-1). Our results indicate that ammonia concentration manipulates the structure of AOM. AOA prefers to live and perform higher amoA transcription activity than AOB in ammonia-limited water environments, and AOB tends to take the first contributor place in ammonia-rich ones.
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Affiliation(s)
- Yan Zhang
- School of Environment, Tsinghua University, Beijing, 100084, China
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24
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Zhou Z, Chen J, Cao H, Han P, Gu JD. Analysis of methane-producing and metabolizing archaeal and bacterial communities in sediments of the northern South China Sea and coastal Mai Po Nature Reserve revealed by PCR amplification of mcrA and pmoA genes. Front Microbiol 2015; 5:789. [PMID: 25774150 PMCID: PMC4343527 DOI: 10.3389/fmicb.2014.00789] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 12/22/2014] [Indexed: 11/17/2022] Open
Abstract
Communities of methanogens, anaerobic methanotrophic archaea and aerobic methanotrophic bacteria (MOB) were compared by profiling polymerase chain reaction (PCR)-amplified products of mcrA and pmoA genes encoded by methyl-coenzyme M reductase alpha subunit and particulate methane monooxygenase alpha subunit, respectively, in sediments of northern South China Sea (nSCS) and Mai Po mangrove wetland. Community structures representing by mcrA gene based on 12 clone libraries from nSCS showed separate clusters indicating niche specificity, while, Methanomicrobiales, Methanosarcinales clades 1,2, and Methanomassiliicoccus-like groups of methanogens were the most abundant groups in nSCS sediment samples. Novel clusters specific to the SCS were identified and the phylogeny of mcrA gene-harboring archaea was updated. Quantitative polymerase chain reaction was used to detect mcrA gene abundance in all samples: similar abundance of mcrA gene in the surface layers of mangrove (3.4∼3.9 × 106 copies per gram dry weight) and of intertidal mudflat (5.5∼5.8 × 106 copies per gram dry weight) was observed, but higher abundance (6.9 × 106 to 1.02 × 108 copies per gram dry weight) was found in subsurface samples of both sediment types. Aerobic MOB were more abundant in surface layers (6.7∼11.1 × 105 copies per gram dry weight) than the subsurface layers (1.2∼5.9 × 105 copies per gram dry weight) based on pmoA gene. Mangrove surface layers harbored more abundant pmoA gene than intertidal mudflat, but less pmoA genes in the subsurface layers. Meanwhile, it is also noted that in surface layers of all samples, more pmoA gene copies were detected than the subsurface layers. Reedbed rhizosphere exhibited the highest gene abundance of mcrA gene (8.51 × 108 copies per gram dry weight) and pmoA gene (1.56 × 107 copies per gram dry weight). This study investigated the prokaryotic communities responsible for methane cycling in both marine and coastal wetland ecosystems, showing the distribution characteristics of mcrA gene-harboring communities in nSCS and stratification of mcrA and pmoA gene diversity and abundance in the Mai Po Nature Reserve.
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Affiliation(s)
- Zhichao Zhou
- Laboratory of Environmental Microbiology and Toxicology, School of Biological Sciences, The University of Hong Kong Hong Kong, China
| | - Jing Chen
- Laboratory of Environmental Microbiology and Toxicology, School of Biological Sciences, The University of Hong Kong Hong Kong, China
| | - Huiluo Cao
- Division of Life Science, Hong Kong University of Science and Technology, Hong Kong China
| | - Ping Han
- Laboratory of Environmental Microbiology and Toxicology, School of Biological Sciences, The University of Hong Kong Hong Kong, China
| | - Ji-Dong Gu
- Laboratory of Environmental Microbiology and Toxicology, School of Biological Sciences, The University of Hong Kong Hong Kong, China
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Community structure of ammonia-oxidizing archaea and ammonia-oxidizing bacteria in soil treated with the insecticide imidacloprid. BIOMED RESEARCH INTERNATIONAL 2015; 2015:582938. [PMID: 25705674 PMCID: PMC4331321 DOI: 10.1155/2015/582938] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 12/01/2014] [Accepted: 12/01/2014] [Indexed: 11/18/2022]
Abstract
The purpose of this experiment was to assess the effect of imidacloprid on the community structure of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) in soil using the denaturing gradient gel electrophoresis (DGGE) approach. Analysis showed that AOA and AOB community members were affected by the insecticide treatment. However, the calculation of the richness (S) and the Shannon-Wiener index (H) values for soil treated with the field rate (FR) dosage of imidacloprid (1 mg/kg soil) showed no changes in measured indices for the AOA and AOB community members. In turn, the 10∗FR dosage of insecticide (10 mg/kg soil) negatively affected the AOA community, which was confirmed by the decrease of the S and H values in comparison with the values obtained for the control soil. In the case of AOB community, an initial decline followed by the increase of the S and H values was obtained. Imidacloprid decreased the nitrification rate while the ammonification process was stimulated by the addition of imidacloprid. Changes in the community structure of AOA and AOB could be due to an increase in the concentration of N-NH4+, known as the most important factor which determines the contribution of these microorganisms to soil nitrification.
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Liu Y, Zhang J, Zhao L, Li Y, Dai Y, Xie S. Distribution of sediment ammonia-oxidizing microorganisms in plateau freshwater lakes. Appl Microbiol Biotechnol 2015; 99:4435-44. [DOI: 10.1007/s00253-014-6341-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 12/15/2014] [Accepted: 12/17/2014] [Indexed: 01/16/2023]
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Hirsch PR, Mauchline TH. The Importance of the Microbial N Cycle in Soil for Crop Plant Nutrition. ADVANCES IN APPLIED MICROBIOLOGY 2015; 93:45-71. [PMID: 26505688 DOI: 10.1016/bs.aambs.2015.09.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Nitrogen is crucial for living cells, and prior to the introduction of mineral N fertilizer, fixation of atmospheric N2 by diverse prokaryotes was the primary source of N in all ecosystems. Microorganisms drive the N cycle starting with N2 fixation to ammonia, through nitrification in which ammonia is oxidized to nitrate and denitrification where nitrate is reduced to N2 to complete the cycle, or partially reduced to generate the greenhouse gas nitrous oxide. Traditionally, agriculture has relied on rotations that exploited N fixed by symbiotic rhizobia in leguminous plants, and recycled wastes and manures that microbial activity mineralized to release ammonia or nitrate. Mineral N fertilizer provided by the Haber-Bosch process has become essential for modern agriculture to increase crop yields and replace N removed from the system at harvest. However, with the increasing global population and problems caused by unintended N wastage and pollution, more sustainable ways of managing the N cycle in soil and utilizing biological N2 fixation have become imperative. This review describes the biological N cycle and details the steps and organisms involved. The effects of various agricultural practices that exploit fixation, retard nitrification, and reduce denitrification are presented, together with strategies that minimize inorganic fertilizer applications and curtail losses. The development and implementation of new technologies together with rediscovering traditional practices are discussed to speculate how the grand challenge of feeding the world sustainably can be met.
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Affiliation(s)
- Penny R Hirsch
- Department of AgroEcology, Rothamsted Research, Harpenden, Hertfordshire, UK
| | - Tim H Mauchline
- Department of AgroEcology, Rothamsted Research, Harpenden, Hertfordshire, UK
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Qin K, Struckhoff GC, Agrawal A, Shelley ML, Dong H. Natural attenuation potential of tricholoroethene in wetland plant roots: role of native ammonium-oxidizing microorganisms. CHEMOSPHERE 2015; 119:971-977. [PMID: 25303656 DOI: 10.1016/j.chemosphere.2014.09.040] [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: 06/01/2014] [Revised: 09/09/2014] [Accepted: 09/14/2014] [Indexed: 06/04/2023]
Abstract
Bench-scale microcosms with wetland plant roots were investigated to characterize the microbial contributions to contaminant degradation of trichloroethene (TCE) with ammonium. The batch system microcosms consisted of a known mass of wetland plant roots in aerobic growth media where the roots provided both an inoculum of root-associated ammonium-oxidizing microorganisms and a microbial habitat. Aqueous growth media, ammonium, and TCE were replaced weekly in batch microcosms while retaining roots and root-associated biomass. Molecular biology results indicated that ammonium-oxidizing bacteria (AOB) were enriched from wetland plant roots while analysis of contaminant and oxygen concentrations showed that those microorganisms can degrade TCE by aerobic cometabolism. Cometabolism of TCE, at 29 and 46 μg L(-1), was sustainable over the course of 9 weeks, with 20-30 mg L(-1) ammonium-N. However, at 69 μg L(-1) of TCE, ammonium oxidation and TCE cometabolism were completely deactivated in two weeks. This indicated that between 46 and 69 μg L(-1) TCE with 30 mg L(-1) ammonium-N there is a threshold [TCE] below which sustainable cometabolism can be maintained with ammonium as the primary substrate. However, cometabolism-induced microbial deactivation of ammonium oxidation and TCE degradation at 69 μg L(-1) TCE did not result in a lower abundance of the amoA gene in the microcosms, suggesting that the capacity to recover from TCE inhibition was still intact, given time and removal of stress. Our study indicates that microorganisms associated with wetland plant roots can assist in the natural attenuation of TCE in contaminated aquatic environments, such as urban or treatment wetlands, and wetlands impacted by industrial solvents.
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Affiliation(s)
- Ke Qin
- Department of Earth & Environmental Sciences, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45435, USA
| | - Garrett C Struckhoff
- Department of Systems and Engineering Management, Air Force Institute of Technology, Wright-Patterson Air Force Base, 2950 Hobson Way, WPAFB, OH 45433, USA
| | - Abinash Agrawal
- Department of Earth & Environmental Sciences, Wright State University, 3640 Colonel Glenn Highway, Dayton, OH 45435, USA.
| | - Michael L Shelley
- Department of Systems and Engineering Management, Air Force Institute of Technology, Wright-Patterson Air Force Base, 2950 Hobson Way, WPAFB, OH 45433, USA
| | - Hailiang Dong
- Department of Geology and Environmental Earth Science, Miami University, OH 45056, USA
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Yan L, Li Z, Bao J, Wang G, Wang C, Wang W. Diversity of ammonia-oxidizing bacteria and ammonia-oxidizing archaea during composting of municipal sludge. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-014-1012-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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30
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Impact of carbon source amendment on ammonia-oxidizing microorganisms in reservoir riparian soil. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-014-0979-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Ammonia- and methane-oxidizing microorganisms in high-altitude wetland sediments and adjacent agricultural soils. Appl Microbiol Biotechnol 2014; 98:10197-209. [PMID: 25030456 DOI: 10.1007/s00253-014-5942-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Revised: 07/02/2014] [Accepted: 07/06/2014] [Indexed: 10/25/2022]
Abstract
Ammonia oxidation is known to be carried out by ammonia-oxidizing bacteria (AOB) and archaea (AOA), while methanotrophs (methane-oxidizing bacteria (MOB)) play an important role in mitigating methane emissions from the environment. However, the difference of AOA, AOB, and MOB distribution in wetland sediment and adjacent upland soil remains unclear. The present study investigated the abundances and community structures of AOA, AOB, and MOB in sediments of a high-altitude freshwater wetland in Yunnan Province (China) and adjacent agricultural soils. Variations of AOA, AOB, and MOB community sizes and structures were found in water lily-vegetated and Acorus calamus-vegetated sediments and agricultural soils (unflooded rice soil, cabbage soil, and garlic soil and flooded rice soil). AOB community size was higher than AOA in agricultural soils and lily-vegetated sediment, but lower in A. calamus-vegetated sediment. MOB showed a much higher abundance than AOA and AOB. Flooded rice soil had the largest AOA, AOB, and MOB community sizes. Principal coordinate analyses and Jackknife Environment Clusters analyses suggested that unflooded and flooded rice soils had relatively similar AOA, AOB, and MOB structures. Cabbage soil and A. calamus-vegetated sediment had relatively similar AOA and AOB structures, but their MOB structures showed a large difference. Nitrososphaera-like microorganisms were the predominant AOA species in garlic soil but were present with a low abundance in unflooded rice soil and cabbage soil. Nitrosospira-like AOB were dominant in wetland sediments and agricultural soils. Type I MOB Methylocaldum and type II MOB Methylocystis were dominant in wetland sediments and agricultural soils. Moreover, Pearson's correlation analysis indicated that AOA Shannon diversity was positively correlated with the ratio of organic carbon to nitrogen (p < 0.05). This work could provide some new insights toward ammonia and methane oxidation in soil and wetland sediment ecosystems.
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Wan R, Yang Y, Sun W, Wang Z, Xie S. Simazine biodegradation and community structures of ammonia-oxidizing microorganisms in bioaugmented soil: impact of ammonia and nitrate nitrogen sources. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:3175-3181. [PMID: 24194418 DOI: 10.1007/s11356-013-2268-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 10/21/2013] [Indexed: 06/02/2023]
Abstract
The objective of the present study was to investigate the impact of ammonia and nitrate nitrogen sources on simazine biodegradation by Arthrobacter sp. strain SD1 and the community structures of ammonia-oxidizing archaea (AOA) and bacteria (AOB) in non-agricultural soil. Soil microcosms with different treatments were constructed for herbicide biodegradation test. The relative abundance of the strain SD1 and the structures of AOA and AOB communities were assessed using quantitative PCR (q-PCR) and terminal restriction fragment length polymorphism (TRFLP), respectively. The co-existence of two inorganic nitrogen sources (ammonia and nitrate) had certain impact on simazine dissipation by the strain SD1. Bioaugmentation could induce a shift in the community structures of both AOA and AOB, but AOA were more responsive. Nitrogen application had significant impacts on AOA and AOB communities in bioaugmented soils. Moreover, in non-bioaugmented soil, the community structure of AOA, instead of AOB, could be quickly recovered after herbicide application. This study could add some new insights towards the impacts of nitrogen sources on s-triazine bioremediation and ammonia-oxidizing microorganisms in soil ecosystem.
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Affiliation(s)
- Rui Wan
- College of Environmental Sciences and Engineering, The Key Laboratory of Water and Sediment Sciences (Ministry of Education), Peking University, Beijing, 100871, China
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Jiang Y, Jin C, Sun B. Soil aggregate stratification of nematodes and ammonia oxidizers affects nitrification in an acid soil. Environ Microbiol 2013; 16:3083-94. [DOI: 10.1111/1462-2920.12339] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 11/13/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Yuji Jiang
- State Key Laboratory of Soil and Sustainable Agriculture; Institute of Soil Science; Chinese Academy of Sciences; No. 71 East Beijing Road Nanjing 210008 China
| | - Chen Jin
- State Key Laboratory of Soil and Sustainable Agriculture; Institute of Soil Science; Chinese Academy of Sciences; No. 71 East Beijing Road Nanjing 210008 China
- College of Resources and Environmental Sciences; Nanjing Agricultural University; Nanjing 210095 China
| | - Bo Sun
- State Key Laboratory of Soil and Sustainable Agriculture; Institute of Soil Science; Chinese Academy of Sciences; No. 71 East Beijing Road Nanjing 210008 China
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34
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Wang YF, Gu JD. Effects of allylthiourea, salinity, and pH on ammonia/ammonium-oxidizing prokaryotes in mangrove sediment incubated in laboratory microcosms. Appl Microbiol Biotechnol 2013; 98:3257-74. [DOI: 10.1007/s00253-013-5399-3] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Revised: 11/02/2013] [Accepted: 11/09/2013] [Indexed: 10/26/2022]
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35
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Sun W, Xia C, Xu M, Guo J, Wang A, Sun G. Distribution and abundance of archaeal and bacterial ammonia oxidizers in the sediments of the Dongjiang River, a drinking water supply for Hong Kong. Microbes Environ 2013; 28:457-65. [PMID: 24256973 PMCID: PMC4070707 DOI: 10.1264/jsme2.me13066] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Ammonia-oxidizing archaea (AOA) and bacteria (AOB) play important roles in nitrification. However, limited information about the characteristics of AOA and AOB in the river ecosystem is available. The distribution and abundance of AOA and AOB in the sediments of the Dongjiang River, a drinking water source for Hong Kong, were investigated by clone library analysis and quantitative real-time PCR. Phylogenetic analysis showed that Group 1.1b-and Group 1.1b-associated sequences of AOA predominated in sediments with comparatively high carbon and nitrogen contents (e.g. total carbon (TC) >13 g kg−1 sediment, NH4+-N >144 mg kg−1 sediment), while Group 1.1a- and Group 1.1a-associated sequences were dominant in sediments with opposite conditions (e.g. TC <4 g kg−1 sediment, NH4+-N <93 mg kg−1 sediment). Although Nitrosomonas- and Nitrosospira-related sequences of AOB were detected in the sediments, nearly 70% of the sequences fell into the Nitrosomonas-like B cluster, suggesting similar sediment AOB communities along the river. Higher abundance of AOB than AOA was observed in almost all of the sediments in the Dongjiang River, while significant correlations were only detected between the distribution of AOA and the sediment pH and TC, which suggested that AOA responded more sensitively than AOB to variations of environmental factors. These results extend our knowledge about the environmental responses of ammonia oxidizers in the river ecosystem.
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Affiliation(s)
- Wei Sun
- School of Bioscience and Bioengineering, South China University of Technology
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36
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Habteselassie MY, Xu L, Norton JM. Ammonia-oxidizer communities in an agricultural soil treated with contrasting nitrogen sources. Front Microbiol 2013; 4:326. [PMID: 24223575 PMCID: PMC3818573 DOI: 10.3389/fmicb.2013.00326] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 10/15/2013] [Indexed: 11/13/2022] Open
Abstract
The community of ammonia-oxidizing prokaryotes was examined in an agricultural soil treated for six seasons with contrasting nitrogen (N) sources. Molecular tools based on the genes encoding ammonia monooxygenase were used to characterize the ammonia oxidizer (AO) communities and their abundance. Soil DNA was extracted from soils sampled from silage corn plots that received no additional N (control), dairy waste compost, liquid dairy waste (LW), and ammonium sulfate (AS) treatments at approximately 100 and 200 kg available N ha(-1) over 6 years. The N treatment affected the quantity of AO based on estimates of amoA by real-time PCR. Ammonia oxidizing bacteria (AOB) were higher in soils from the AS200, AS100, and LW200 treatments (2.5 × 10(7), 2.5 × 10(7), and 2.1 × 10(7)copies g(-1) soil, respectively) than in the control (8.1 × 10(6) copies g(-1) soil) while the abundance of amoA encoding archaea [ammonia oxidizing archaea (AOA)] was not significantly affected by treatment (3.8 × 10(7) copies g(-1) soil, average). The ratio of AOA/AOB was higher in the control and compost treated soils, both treatments have the majority of their ammonium supplied through mineralization of organic nitrogen. Clone libraries of partial amoA sequences indicated AOB related to Nitrosospira multiformis and AOA related to uncultured Nitrososphaera similar to those described by soil fosmid 54d9 were prevalent. Profiles of the amoC-amoA intergenic region indicated that both Nitrosospira- and Nitrosomonas-type AOB were present in all soils examined. In contrast to the intergenic amoC-amoA profile results, Nitrosomonas-like clones were recovered only in the LW200 treated soil-DNA. The impact of 6 years of contrasting nitrogen sources applications caused changes in AO abundance while the community composition remained relatively stable for both AOB and AOA.
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Affiliation(s)
- Mussie Y Habteselassie
- Department of Crop and Soil Sciences, The University of Georgia Griffin Campus Griffin, GA, USA
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37
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Wang X, Wang C, Bao L, Xie S. Abundance and community structure of ammonia-oxidizing microorganisms in reservoir sediment and adjacent soils. Appl Microbiol Biotechnol 2013; 98:1883-92. [PMID: 23949998 DOI: 10.1007/s00253-013-5174-5] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2013] [Revised: 07/25/2013] [Accepted: 08/01/2013] [Indexed: 12/01/2022]
Abstract
Ammonia oxidation is an important process for global nitrogen cycling. Both ammonia-oxidizing bacteria (AOB) and archaea (AOA) can be the important players in nitrification process. However, their relative contribution to nitrification remains controversial. This study investigated the abundance and community structure of AOA and AOB in sediment of Miyun Reservoir and adjacent soils. Quantitative PCR assays indicated that the highest AOA abundance occurred in unplanted riparian soil, followed by reservoir sediment, reed-planted riparian soil and agricultural soil. The AOB community size in agricultural soil was much larger than that in the other habitats. Large variations in the structures of AOA and AOB were also observed among the different habitats. The abundance of Nitrosospira-like AOB species were detected in the agricultural soil and reservoir sediment. Pearson's correlation analysis showed the AOB diversity had positive significant correlations with pH and total nitrogen, while the AOA diversity might be negatively affected by nitrate nitrogen and ammonia nitrogen. This work could add new insights towards nitrification in aquatic and terrestrial ecosystems.
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Affiliation(s)
- Xiaoyan Wang
- College of Resources, Environment & Tourism, Capital Normal University, Beijing, 100048, China
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38
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Alves RJE, Wanek W, Zappe A, Richter A, Svenning MM, Schleper C, Urich T. Nitrification rates in Arctic soils are associated with functionally distinct populations of ammonia-oxidizing archaea. THE ISME JOURNAL 2013; 7:1620-31. [PMID: 23466705 PMCID: PMC3721107 DOI: 10.1038/ismej.2013.35] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 01/29/2013] [Accepted: 01/31/2013] [Indexed: 11/09/2022]
Abstract
The functioning of Arctic soil ecosystems is crucially important for global climate, and basic knowledge regarding their biogeochemical processes is lacking. Nitrogen (N) is the major limiting nutrient in these environments, and its availability is strongly dependent on nitrification. However, microbial communities driving this process remain largely uncharacterized in Arctic soils, namely those catalyzing the rate-limiting step of ammonia (NH3) oxidation. Eleven Arctic soils were analyzed through a polyphasic approach, integrating determination of gross nitrification rates, qualitative and quantitative marker gene analyses of ammonia-oxidizing archaea (AOA) and bacteria (AOB) and enrichment of AOA in laboratory cultures. AOA were the only NH3 oxidizers detected in five out of 11 soils and outnumbered AOB in four of the remaining six soils. The AOA identified showed great phylogenetic diversity and a multifactorial association with the soil properties, reflecting an overall distribution associated with tundra type and with several physico-chemical parameters combined. Remarkably, the different gross nitrification rates between soils were associated with five distinct AOA clades, representing the great majority of known AOA diversity in soils, which suggests differences in their nitrifying potential. This was supported by selective enrichment of two of these clades in cultures with different NH3 oxidation rates. In addition, the enrichments provided the first direct evidence for NH3 oxidation by an AOA from an uncharacterized Thaumarchaeota-AOA lineage. Our results indicate that AOA are functionally heterogeneous and that the selection of distinct AOA populations by the environment can be a determinant for nitrification activity and N availability in soils.
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Affiliation(s)
| | - Wolfgang Wanek
- Department of Terrestrial Ecosystem Research, Faculty of Life Sciences, University of Vienna, Vienna, Austria
| | - Anna Zappe
- Department of Genetics in Ecology, University of Vienna, Vienna, Austria
| | - Andreas Richter
- Department of Terrestrial Ecosystem Research, Faculty of Life Sciences, University of Vienna, Vienna, Austria
| | - Mette M Svenning
- Department of Arctic and Marine Biology, Faculty of Biosciences, Fisheries and Economics, University of Tromsø, Tromsø, Norway
| | - Christa Schleper
- Department of Genetics in Ecology, University of Vienna, Vienna, Austria
| | - Tim Urich
- Department of Genetics in Ecology, University of Vienna, Vienna, Austria
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Community structure and transcript responses of anammox bacteria, AOA, and AOB in mangrove sediment microcosms amended with ammonium and nitrite. Appl Microbiol Biotechnol 2013; 97:9859-74. [PMID: 23455621 DOI: 10.1007/s00253-012-4683-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 12/18/2012] [Accepted: 12/21/2012] [Indexed: 10/27/2022]
Abstract
The anthropogenic nitrogen (N) input as an important source strongly influences the microbial N cycling in coastal ecosystems. In this study, we investigated the responses of anammox bacteria, ammonia oxidizing archaea (AOA), and ammonia oxidizing bacteria (AOB) to the amendments of ammonium and nitrite into mangrove sediments incubated in laboratory microcosm experiments. The variations of diversity, abundances, and transcription of 16S rRNA and hydrazine oxidoreductase (hzo) genes for anammox bacteria, and amoA genes for AOA and AOB were monitored during the incubation. The T-RFLP analysis demonstrated that both ammonium and nitrite additions significantly altered the community compositions of anammox bacteria, AOA, and AOB, while abundance and transcripts analyzed quantitatively confirmed that the amendment of ammonium (25 mM) stimulated the growth of anammox bacteria, AOA, and AOB, whereas nitrite (0.8 mM) generally inhibited them with some exceptions for specific species of AOA and AOB, showing different responses of anammox bacteria, AOA, and AOB to the nitrite and ammonium amendments. Results further suggest that AOB as the dominant group with higher amoA gene abundances and transcripts might play a more important role on the ammonium oxidization in mangrove sediment of this subtropical site.
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Diversity, abundance, and activity of ammonia-oxidizing bacteria and archaea in Chongming eastern intertidal sediments. Appl Microbiol Biotechnol 2012; 97:8351-63. [PMID: 23108528 DOI: 10.1007/s00253-012-4512-3] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Revised: 10/09/2012] [Accepted: 10/10/2012] [Indexed: 11/27/2022]
Abstract
Ammonia oxidation plays a pivotal role in the cycling and removal of nitrogen in aquatic sediments. Certain bacterial groups and a novel group of archaea, which is affiliated with the novel phylum Thaumarchaeota, can perform this initial nitrification step. We examined the diversity and abundance of ammonia-oxidizing β-Proteobacteria (β-AOB) and ammonia-oxidizing archaea (AOA) in the sediments of Chongming eastern tidal flat using the ammonia monooxygenase-α subunit (amoA) gene as functional markers. Clone library analysis showed that AOA had a higher diversity of amoA gene than β-AOB. The β-Proteobacterial amoA community composition correlated significantly with water soluble salts in the sediments, whereas the archaeal amoA community composition was correlated more with nitrate concentrations. Quantitative PCR (qPCR) results indicated that the abundance of β-AOB amoA gene (9.11 × 10(4)-6.47 × 10(5) copies g(-1) sediment) was always greater than that of AOA amoA gene (7.98 × 10(3)-3.51 × 10(5) copies g(-1) sediment) in all the samples analyzed in this study. The β-Proteobacterial amoA gene abundance was closely related to organic carbon, while no significant correlations were observed between archaeal amoA gene abundance and the environmental factors. Potential nitrification rates were significantly greater in summer than in winter and correlated strongly with the abundance of amoA genes. Additionally, a greater contribution of single amoA gene to potential nitrification occurred in summer (1.03-5.39 pmol N copy(-1) day(-1)) compared with winter (0.16-0.38 pmol N copy(-1) day(-1)), suggesting a higher activity of ammonia-oxidizing prokaryotes in warm seasons.
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Wang YF, Gu JD. Higher diversity of ammonia/ammonium-oxidizing prokaryotes in constructed freshwater wetland than natural coastal marine wetland. Appl Microbiol Biotechnol 2012; 97:7015-33. [PMID: 23053083 PMCID: PMC3708290 DOI: 10.1007/s00253-012-4430-4] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 09/07/2012] [Accepted: 09/09/2012] [Indexed: 11/27/2022]
Abstract
Anaerobic ammonium-oxidizing (anammox) bacteria, aerobic ammonia-oxidizing archaea (AOA), and ammonia-oxidizing bacteria (AOB) are three groups of ammonium/ammonia-oxidizing prokaryotes (AOPs) that are involved in the nitrogen cycle. This research compared the AOP communities in a constructed freshwater wetland with a natural coastal marine wetland in the subtropical Hong Kong. Both vegetated/rhizosphere and nonvegetated sediments were investigated to identify the effects of different macrophytes on the AOP communities. The polymerase chain reaction (PCR)-amplified gene fragments of 16S rRNA and archaeal and bacterial amoA (encoding the ammonia monooxygenase alpha subunit) were applied as molecular biomarkers to analyze the AOPs’ phylogeny and diversity. Quantitative PCR was used to determine the abundances of AOPs in the sediments. The results showed that the relatively more heterogeneous freshwater wetland contained a broader range of phylotypes, higher diversity, more complex community structures, and more unevenly distributed abundances of AOPs than the coastal wetland. The effects of vegetation on the community structures of AOPs were plant-specific. The exotic Typha angustifolia affected the community structures of all AOPs and enhanced their abundances in the rhizosphere region. Both Phragmites australis and Cyperus malaccensis showed some effects on the community structures of AOB, but minimal effects on those of anammox bacteria or AOA. Kandelia obovata had almost no detectable effect on all AOPs due to their smaller size. This study suggested that the freshwater and coastal marine wetlands may have different contributions to the inorganic N removal due to the variations in AOP communities and plant types.
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Affiliation(s)
- Yong-Feng Wang
- Laboratory of Environmental Microbiology and Toxicology, School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong, SAR, People's Republic of China
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Impact of short-term acidification on nitrification and nitrifying bacterial community dynamics in soilless cultivation media. Appl Environ Microbiol 2012; 78:6576-82. [PMID: 22773643 DOI: 10.1128/aem.01545-12] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Soilless medium-based horticulture systems are highly prevalent due to their capacity to optimize growth of high-cash crops. However, these systems are highly dynamic and more sensitive to physiochemical and pH perturbations than traditional soil-based systems, especially during nitrification associated with ammonia-based fertilization. The objective of this study was to assess the impact of nitrification-generated acidification on ammonia oxidation rates and nitrifying bacterial community dynamics in soilless growth media. To achieve this goal, perlite soilless growth medium from a commercial bell pepper greenhouse was incubated with ammonium in bench-scale microcosm experiments. Initial quantitative real-time PCR analysis indicated that betaproteobacterial ammonia oxidizers were significantly more abundant than ammonia-oxidizing archaea, and therefore, research focused on this group. Ammonia oxidation rates were highest between 0 and 9 days, when pH values dropped from 7.4 to 4.9. Pyrosequencing of betaproteobacterial ammonia-oxidizing amoA gene fragments indicated that r-strategist-like Nitrosomonas was the dominant ammonia-oxidizing bacterial genus during this period, seemingly due to the high ammonium concentration and optimal growth conditions in the soilless media. Reduction of pH to levels below 4.8 resulted in a significant decrease in both ammonia oxidation rates and the diversity of ammonia-oxidizing bacteria, with increased relative abundance of the r-strategist-like Nitrosospira. Nitrite oxidizers (Nitrospira and Nitrobacter) were on the whole more abundant and less sensitive to acidification than ammonia oxidizers. This study demonstrates that nitrification and nitrifying bacterial community dynamics in high-N-load intensive soilless growth media may be significantly different from those in in-terra agricultural systems.
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Wang A, Wu FZ, Yang WQ, Wu ZC, Wang XX, Tan B. Abundance and composition dynamics of soil ammonia-oxidizing archaea in an alpine fir forest on the eastern Tibetan Plateau of China. Can J Microbiol 2012; 58:572-80. [PMID: 22494458 DOI: 10.1139/w2012-032] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Real-time qPCR and clone library sequencing targeting amoA genes were used to investigate the seasonal dynamics of an ammonia-oxidizing archaea (AOA) community in an alpine fir forest in western China. AOA were detected at all sampling dates, and there were significant variations in archaeal amoA gene copy numbers (7.63 × 10(5) to 8.35 × 10(8) per gram of dry soil) throughout the nongrowing season. Compared with ammonia-oxidizing bacteria (AOB), the AOA displayed a higher abundance on the majority of sampling dates during the freeze-thaw period. All of the AOA sequences fell within soil and sediment lineages and were affiliated with 7 clusters. Compared with the other clusters, cluster 1 was more sensitive to low temperature and was the dominant group in August. In contrast, cluster 3 dominated the AOA community in winter and probably represents a group of cold-adapted archaea. Redundancy analysis (RDA) revealed that the seasonality of the AOA community was mainly attributed to changes in soil temperature and nutrient availability (e.g., dissolved organic nitrogen and carbon). Our results indicate that AOA exist in frozen soils in the alpine coniferous forest ecosystem of the eastern Tibetan Plateau. Moreover, soil temperature may directly and (or) indirectly affect AOA abundance and composition and may further influence the soil N cycle during the winter.
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Affiliation(s)
- Ao Wang
- Key Laboratory of Ecological Forestry Engineering, Institute of Ecology & Forestry, Sichuan Agricultural University, No. 211, Huimin Road, Wenjiang District 611130, PR China
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