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Yuan C, Gao J, Huang L, Jian S. Chromolaena odorata affects soil nitrogen transformations and competition in tropical coral islands by altering soil ammonia oxidizing microbes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 950:175196. [PMID: 39097027 DOI: 10.1016/j.scitotenv.2024.175196] [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: 05/21/2024] [Revised: 07/19/2024] [Accepted: 07/27/2024] [Indexed: 08/05/2024]
Abstract
Invasive plants can change the community structure of soil ammonia-oxidizing microbes, affect the process of soil nitrogen (N) transformation, and gain a competitive advantage. However, the current researches on competition mechanism of Chromolaena odorata have not involved soil nitrogen transformation. In this study, we compared the microbially mediated soil transformations of invasive C. odorata and natives (Pisonia grandis and Scaevola taccada) of tropical coral islands. We assessed how differences in plant biomass and tissue N contents, soil nutrients, N transformation rates, microbial biomass and activity, and diversity and abundance of ammonia oxidizing microbes associated with these species impact their competitiveness. The results showed that C. odorata outcompeted both native species by allocating more proportionally biomass to aboveground parts in response to interspecific competition (12.92 % and 22.72 % more than P. grandis and S. taccada, respectively). Additionally, when C. odorata was planted with native plants, the available N and net mineralization rates in C. odorata rhizosphere soil were higher than in native plants rhizosphere soils. Higher abundance of ammonia-oxidizing bacteria in C. odorata rhizosphere soil confirmed this, being positively correlated with soil N mineralization rates and available N. Our findings help to understand the soil N acquisition and competition strategies of C. odorata, and contribute to improving evaluations and predictions of invasive plant dynamics and their ecological effects in tropical coral islands.
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Affiliation(s)
- Chengzhi Yuan
- CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones & Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jia Gao
- CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones & Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Luping Huang
- CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones & Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuguang Jian
- CAS Engineering Laboratory for Vegetation Ecosystem Restoration on Islands and Coastal Zones & Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; South China National Botanical Garden, Guangzhou 510650, China.
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2
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Kong L, Wang Y, Cui D, He W, Zhang C, Zheng C. Application of single-cell Raman-deuterium isotope probing to reveal the resistance of marine ammonia-oxidizing archaea SCM1 against common antibiotics. CHEMOSPHERE 2024; 362:142500. [PMID: 38852635 DOI: 10.1016/j.chemosphere.2024.142500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 05/14/2024] [Accepted: 05/30/2024] [Indexed: 06/11/2024]
Abstract
Antimicrobial resistance (AMR) in oceans poses a significant threat to human health through the seafood supply chain. Ammonia-oxidizing archaea (AOA) are important marine microorganisms and play a key role in the biogeochemical nitrogen cycle around the world. However, the AMR of marine AOA to aquicultural antibiotics is poorly explored. Here, Raman-deuterium isotope probing (Raman-DIP), a single-cell tool, was developed to reveal the AMR of a typical marine species of AOA, Nitrosopumilus maritimus (designated SCM1), against six antibiotics, including erythromycin, tetracycline, novobiocin, neomycin, bacitracin, and vancomycin. The D2O concentration (30% v/v) and culture period (9 days) were optimized for the precise detection of metabolic activity in SCM1 cells through Raman-DIP. The relative metabolic activity of SCM1 upon exposure to antibiotics was semi-quantitatively calculated based on single-cell Raman spectra. SCM1 exhibited high resistance to erythromycin, tetracycline, novobiocin, neomycin, and vancomycin, with minimum inhibitory concentration (MIC) values between 100 and 400 mg/L, while SCM1 is very sensitive to bacitracin (MIC: 0.8 mg/L). Notably, SCM1 cells were completely inactive under the metabolic activity minimum inhibitory concentration conditions (MA-MIC: 1.6-800 mg/L) for the six antibiotics. Further genomic analysis revealed the antibiotic resistance genes (ARGs) of SCM1, including 14 types categorized into 33 subtypes. This work increases our knowledge of the AMR of marine AOA by linking the resistant phenome to the genome, contributing to the risk assessment of AMR in the underexplored ocean environment. As antibiotic resistance in marine microorganisms is significantly affected by the concentration of antibiotics in coastal environments, we encourage more studies concentrating on both the phenotypic and genotypic antibiotic resistance of marine archaea. This may facilitate a comprehensive evaluation of the capacity of marine microorganisms to spread AMR and the implementation of suitable control measures to protect environmental safety and human health.
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Affiliation(s)
- Lingchao Kong
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China; Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, 315200, China
| | - Yi Wang
- Shenzhen Key Laboratory of Marine Archaea Geo-Omics, Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China; Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, 315200, China.
| | - Dongyu Cui
- Shenzhen Key Laboratory of Marine Archaea Geo-Omics, Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Wei He
- Shenzhen Key Laboratory of Marine Archaea Geo-Omics, Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chuanlun Zhang
- Shenzhen Key Laboratory of Marine Archaea Geo-Omics, Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chunmiao Zheng
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China; Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, 315200, China
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3
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Mariano DC, Dias GM, Castro MR, Tschoeke DA, de Oliveira FJ, Sérvulo EFC, Neves BC. Exploring the diversity and functional profile of microbial communities of Brazilian soils with high salinity and oil contamination. Heliyon 2024; 10:e34336. [PMID: 39082007 PMCID: PMC11284384 DOI: 10.1016/j.heliyon.2024.e34336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 07/01/2024] [Accepted: 07/08/2024] [Indexed: 08/02/2024] Open
Abstract
Environmental pollution associated with the petroleum industry is a major problem worldwide. Microbial degradation is extremely important whether in the extractive process or in bioremediation of contaminants. Assessing the local microbiota and its potential for degradation is crucial for implementing effective bioremediation strategies. Herein, contaminated soil samples of onshore oil fields from a semiarid region in the Northeast of Brazil were investigated using metagenomics and metataxonomics. These soils exhibited hydrocarbon contamination and high salinity indices, while a control sample was collected from an uncontaminated area. The shotgun analysis revealed the predominance of Actinomycetota and Pseudomonadota, while 16S rRNA gene amplicon analysis of the samples showed Actinomycetota, Bacillota, and Pseudomonadota as the most abundant. The Archaea domain phylotypes were assigned to Thermoproteota and Methanobacteriota. Functional analysis and metabolic profile of the soil microbiomes exhibited a broader metabolic repertoire in the uncontaminated soil, while degradation pathways and surfactant biosynthesis presented higher values in the contaminated soils, where degradation pathways of xenobiotic and aromatic compounds were also present. Biosurfactant synthetic pathways were abundant, with predominance of lipopeptides. The present work uncovers several microbial drivers of oil degradation and mechanisms of adaptation to high salinity, which are pivotal traits for sustainable soil recovery strategies.
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Affiliation(s)
- Danielly C.O. Mariano
- Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Brazil
- Escola de Química, Universidade Federal do Rio de Janeiro (UFRJ), Brazil
| | - Graciela Maria Dias
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro (UFRJ), Brazil
| | - Michele Rocha Castro
- Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Brazil
- Departamento de Biologia, Instituto Federal do Rio de Janeiro (IFRJ), Brazil
| | - Diogo Antonio Tschoeke
- Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia (COPPE), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Instituto de Biologia, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | | | | | - Bianca Cruz Neves
- Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Brazil
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McKnight MM, Neufeld JD. Comammox Nitrospira among dominant ammonia oxidizers within aquarium biofilter microbial communities. Appl Environ Microbiol 2024; 90:e0010424. [PMID: 38899882 PMCID: PMC11267875 DOI: 10.1128/aem.00104-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 05/26/2024] [Indexed: 06/21/2024] Open
Abstract
Nitrification by aquarium biofilters transforms ammonia waste (NH3/NH4+) to less toxic nitrate (NO3-) via nitrite (NO2-). Prior to the discovery of complete ammonia-oxidizing ("comammox" or CMX) Nitrospira, previous research revealed that ammonia-oxidizing archaea (AOA) dominated over ammonia-oxidizing bacteria (AOB) in freshwater aquarium biofilters. Here, we profiled aquarium biofilter microbial communities and quantified the abundance of all three known ammonia oxidizers using 16S rRNA gene sequencing and quantitative PCR (qPCR), respectively. Biofilter and water samples were each collected from representative residential and commercial freshwater and saltwater aquaria. Distinct biofilter microbial communities were associated with freshwater and saltwater biofilters. Comammox Nitrospira amoA genes were detected in all 38 freshwater biofilter samples (average CMX amoA genes: 2.2 × 103 ± 1.5 × 103 copies/ng) and dominant in 30, whereas AOA were present in 35 freshwater biofilter samples (average AOA amoA genes: 1.1 × 103 ± 2.7 × 103 copies/ng) and only dominant in 7 of them. The AOB were at relatively low abundance within biofilters (average of 3.2 × 101 ± 1.1 × 102 copies of AOB amoA genes/ng of DNA), except for the aquarium with the highest ammonia concentration. For saltwater biofilters, AOA or AOB were differentially abundant, with no comammox Nitrospira detected. Additional sequencing of Nitrospira amoA genes revealed differential distributions, suggesting niche adaptation based on water chemistry (e.g., ammonia, carbonate hardness, and alkalinity). Network analysis of freshwater microbial communities demonstrated positive correlations between nitrifiers and heterotrophs, suggesting metabolic and ecological interactions within biofilters. These results demonstrate that comammox Nitrospira plays a previously overlooked, but important role in home aquarium biofilter nitrification. IMPORTANCE Nitrification is a crucial process that converts toxic ammonia waste into less harmful nitrate that occurs in aquarium biofilters. Prior research found that ammonia-oxidizing archaea (AOA) were dominant over ammonia-oxidizing bacteria (AOB) in freshwater aquarium biofilters. Our study profiled microbial communities of aquarium biofilters and quantified the abundance of all currently known groups of aerobic ammonia oxidizers. The findings reveal that complete ammonia-oxidizing (comammox) Nitrospira were present in all freshwater aquarium biofilter samples in high abundance, challenging our previous understanding of aquarium nitrification. We also highlight niche adaptation of ammonia oxidizers based on salinity. The network analysis of freshwater biofilter microbial communities revealed significant positive correlations among nitrifiers and other community members, suggesting intricate interactions within biofilter communities. Overall, this study expands our understanding of nitrification in aquarium biofilters, emphasizes the role of comammox Nitrospira, and highlights the value of aquaria as microcosms for studying nitrifier ecology.
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Affiliation(s)
| | - Josh D. Neufeld
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
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Khanal A, Song HG, Cho YS, Yang SY, Kim WS, Joshi A, Min J, Lee JH. Evidence of Potential Anammox Activities from Rice Paddy Soils in Microaerobic and Anaerobic Conditions. BIOLOGY 2024; 13:548. [PMID: 39056740 PMCID: PMC11273733 DOI: 10.3390/biology13070548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Revised: 07/15/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024]
Abstract
Anammox, a reaction in which microorganisms oxidize ammonia under anaerobic conditions, is used in the industry to remove ammonium from wastewater in an environmentally friendly manner. This process does not produce intermediate products such as nitrite or nitrate, which can act as secondary pollutants in soil and water environments. For industrial applications, anammox bacteria should be obtained from the environment and cultivated. Anammox bacteria generally exhibit a slow growth rate and may not produce a large number of cells due to their anaerobic metabolism. Additionally, their habitats appear to be limited to specific environments, such as oxidation-reduction transition zones. Consequently, most of the anammox bacteria that are used or studied originate from marine environments. In this study, anammox bacterial evidence was found in rice paddy soil and cultured under various conditions of aerobic, microaerobic, and anaerobic batch incubations to determine whether enrichment was possible. The anammox-specific gene (hzsA) and microbial community analyses were performed on the incubated soils. Although it was not easy to enrich anammox bacteria due to co-occurrence of denitrification and nitrification based on the chemistry data, potential existence of anammox bacteria was assumed in the terrestrial paddy soil environment. For potential industrial uses, anammox bacteria could be searched for in rice paddy soils by applying optimal enrichment conditions.
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Affiliation(s)
- Anamika Khanal
- Department of Agricultural Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea; (A.K.); (H.-G.S.); (Y.-S.C.); (S.-Y.Y.)
| | - Hyung-Geun Song
- Department of Agricultural Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea; (A.K.); (H.-G.S.); (Y.-S.C.); (S.-Y.Y.)
| | - Yu-Sung Cho
- Department of Agricultural Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea; (A.K.); (H.-G.S.); (Y.-S.C.); (S.-Y.Y.)
| | - Seo-Yeon Yang
- Department of Agricultural Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea; (A.K.); (H.-G.S.); (Y.-S.C.); (S.-Y.Y.)
| | - Won-Seok Kim
- Division of Advanced Nuclear Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea;
| | - Alpana Joshi
- Department of Agriculture Technology & Agri-Informatics, Shobhit Institute of Engineering & Technology, Meerut 250110, India;
- Department of Bioenvironmental Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Jiho Min
- School of Chemical Engineering, Jeonbuk National University, Jeonju 54896, Republic of Korea;
| | - Ji-Hoon Lee
- Department of Agricultural Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea; (A.K.); (H.-G.S.); (Y.-S.C.); (S.-Y.Y.)
- Department of Bioenvironmental Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea
- Institute of Agricultural Science & Technology, Jeonbuk National University, Jeonju 54896, Republic of Korea
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Shah AS, Hsu PC, Chisholm C, Podolyan A, Cameron K, Luo J, Stenger R, Carrick S, Hu W, Ferguson SA, Wei W, Shen J, Zhang L, Liu H, Zhao T, Wei W, Ding W, Pan H, Liu Y, Li B, Du J, Di HJ. Nitrification inhibitor chlorate and nitrogen substrates differentially affect comammox Nitrospira in a grassland soil. Front Microbiol 2024; 15:1392090. [PMID: 38808273 PMCID: PMC11130707 DOI: 10.3389/fmicb.2024.1392090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 04/26/2024] [Indexed: 05/30/2024] Open
Abstract
Introduction Through the combined use of two nitrification inhibitors, Dicyandiamide (DCD) and chlorate with nitrogen amendment, this study aimed to investigate the contribution of comammox Nitrospira clade B, ammonia oxidizing bacteria (AOB) and archaea (AOA) to nitrification in a high fertility grassland soil, in a 90-day incubation study. Methods The soil was treated with nitrogen (N) at three levels: 0 mg-N kg-1 soil, 50 mg-N kg-1 soil, and 700 mg-N kg-1 soil, with or without the two nitrification inhibitors. The abundance of comammox Nitrospira, AOA, AOB, and nitrite oxidising bacteria (NOB) was measured using qPCR. The comammox Nitrospira community structure was assessed using Illumina sequencing. Results and Discussion The results showed that the application of chlorate inhibited the oxidation of both NH4+ and NO2- in all three nitrogen treatments. The application of chlorate significantly reduced the abundance of comammox Nitrospira amoA and nxrB genes across the 90-day experimental period. Chlorate also had a significant effect on the beta diversity (Bray-Curtis dissimilarity) of the comammox Nitrospira clade B community. Whilst AOB grew in response to the N substrate additions and were inhibited by both inhibitors, AOA showed litle or no response to either the N substrate or inhibitor treatments. In contrast, comammox Nitrospira clade B were inhibited by the high ammonium concentrations released from the urine substrates. These results demonstrate the differential and niche responses of the three ammonia oxidising communities to N substrate additions and nitrification inhibitor treatments. Further research is needed to investigate the specificity of the two inhibitors on the different ammonia oxidising communities.
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Affiliation(s)
- Anish S. Shah
- Centre for Soil and Environmental Research, Lincoln University, Lincoln, New Zealand
| | - Pei-Chun Hsu
- Centre for Soil and Environmental Research, Lincoln University, Lincoln, New Zealand
| | - Chris Chisholm
- Centre for Soil and Environmental Research, Lincoln University, Lincoln, New Zealand
| | - Andriy Podolyan
- Centre for Soil and Environmental Research, Lincoln University, Lincoln, New Zealand
| | - Keith Cameron
- Centre for Soil and Environmental Research, Lincoln University, Lincoln, New Zealand
| | | | - Roland Stenger
- Lincoln Agritech, Ruakura Research Centre, Hamilton, New Zealand
| | - Sam Carrick
- Manaaki Whenua - Landcare Research, Lincoln, New Zealand
| | - Wei Hu
- The New Zealand Institute for Plant and Food Research, Lincoln, New Zealand
| | - Scott A. Ferguson
- Department of Microbiology, University of Otago, Dunedin, New Zealand
| | - Wenhua Wei
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
| | | | - Limei Zhang
- Research Centre for Eco-Environmental Science, Chinese Academy of Sciences, Beijing, China
| | - Hongbin Liu
- Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Tongke Zhao
- Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Wenxue Wei
- Institute of Subtropical Agricultural Ecology, Chinese Academy of Sciences, Changsha, China
| | - Weixin Ding
- Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Hong Pan
- College of Natural Resources and Environment, Shandong Agricultural University, Taian, China
| | - Yimeng Liu
- Centre for Innovation and Development, Beijing Normal University, Zhuhai, China
| | - Bowen Li
- College of Natural Resources and Environment, Hebei Agricultural University, Baoding, China
| | - Jianjun Du
- College of Resources and Environment, Zhongkai University of Agriculture and Engineering, Guangzhou, China
| | - Hong J. Di
- Centre for Soil and Environmental Research, Lincoln University, Lincoln, New Zealand
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7
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Zheng R, Feng Y, Kong L, Wu X, Zhou J, Zhang L, Liu S. Blue-light irradiation induced partial nitrification. WATER RESEARCH 2024; 254:121381. [PMID: 38442606 DOI: 10.1016/j.watres.2024.121381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 12/08/2023] [Accepted: 02/24/2024] [Indexed: 03/07/2024]
Abstract
The role of ray radiation from the sunlight acting on organisms has long-term been investigated. However, how the light with different wavelengths affects nitrification and the involved nitrifiers are still elusive. Here, we found more than 60 % of differentially expressed genes (DEGs) in nitrifiers were observed under irradiation of blue light with wavelengths of 440-480 nm, which were 13.4 % and 20.3 % under red light and white light irradiation respectively. Blue light was more helpful to achieve partial nitrification rather than white light or red light, where ammonium oxidization by ammonia-oxidizing archaea (AOA) with the increased relative abundance from 8.6 % to 14.2 % played a vital role. This was further evidenced by the enhanced TCA cycle, reactive oxygen species (ROS) scavenge and DNA repair capacity in AOA under blue-light irradiation. In contrast, nitrite-oxidizing bacteria (NOB) was inhibited severely to achieve partial nitrification, and the newly discovered encoded blue light photoreceptor proteins made them more sensitive to blue light and hindered cell activity. Ammonia-oxidizing bacteria (AOB) expressed genes for DNA repair capacity under blue-light irradiation, which ensured their tiny impact by light irradiation. This study provided valuable insights into the photosensitivity mechanism of nitrifiers and shed light on the diverse regulatory by light with different radiation wavelengths in artificial systems, broadening our comprehension of the nitrogen cycle on earth.
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Affiliation(s)
- Ru Zheng
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; Key Laboratory of Water and Sediment Sciences, Ministry of Education of China, Beijing 100871, China
| | - Yiming Feng
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; Key Laboratory of Water and Sediment Sciences, Ministry of Education of China, Beijing 100871, China
| | - Lingrui Kong
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; Key Laboratory of Water and Sediment Sciences, Ministry of Education of China, Beijing 100871, China
| | - Xiaogang Wu
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; Key Laboratory of Water and Sediment Sciences, Ministry of Education of China, Beijing 100871, China
| | - Jianhang Zhou
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; Key Laboratory of Water and Sediment Sciences, Ministry of Education of China, Beijing 100871, China
| | - Liguo Zhang
- School of Environmental and Resource Sciences, Shanxi University, Taiyuan, 030006, China.
| | - Sitong Liu
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; Key Laboratory of Water and Sediment Sciences, Ministry of Education of China, Beijing 100871, China.
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8
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Peoples LM, Seixas MH, Evans KA, Bilbrey EM, Ranieri JR, Tappenbeck TH, Dore JE, Baumann A, Church MJ. Out of sight, but not out of season: Nitrifier distributions and population dynamics in a large oligotrophic lake. Environ Microbiol 2024; 26:e16616. [PMID: 38517638 DOI: 10.1111/1462-2920.16616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 03/08/2024] [Indexed: 03/24/2024]
Abstract
Nitrification is an important control on the form and distribution of nitrogen in freshwater ecosystems. However, the seasonality of nitrogen pools and the diversity of organisms catalyzing this process have not been well documented in oligotrophic lakes. Here, we show that nitrogen pools and nitrifying organisms in Flathead Lake are temporally and vertically dynamic, with nitrifiers displaying specific preferences depending on the season. While the ammonia-oxidizing bacteria (AOB) Nitrosomonadaceae and nitrite-oxidizing bacteria (NOB) Nitrotoga dominate at depth in the summer, the ammonia-oxidizing archaea (AOA) Nitrososphaerota and NOB Nitrospirota become abundant in the winter. Given clear seasonality in ammonium, with higher concentrations during the summer, we hypothesize that the succession between these two nitrifying groups may be due to nitrogen affinity, with AOB more competitive when ammonia concentrations are higher and AOA when they are lower. Nitrifiers in Flathead Lake share more than 99% average nucleotide identity with those reported in other North American lakes but are distinct from those in Europe and Asia, indicating a role for geographic isolation as a factor controlling speciation among nitrifiers. Our study shows there are seasonal shifts in nitrogen pools and nitrifying populations, highlighting the dynamic spatial and temporal nature of nitrogen cycling in freshwater ecosystems.
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Affiliation(s)
- Logan M Peoples
- Flathead Lake Biological Station, University of Montana, Polson, Montana, USA
| | - Miranda H Seixas
- Flathead Lake Biological Station, University of Montana, Polson, Montana, USA
| | - Kate A Evans
- Flathead Lake Biological Station, University of Montana, Polson, Montana, USA
| | - Evan M Bilbrey
- Flathead Lake Biological Station, University of Montana, Polson, Montana, USA
- Department of Biological Sciences, Idaho State University, Pocatello, Idaho, USA
| | - John R Ranieri
- Flathead Lake Biological Station, University of Montana, Polson, Montana, USA
| | - Tyler H Tappenbeck
- Flathead Lake Biological Station, University of Montana, Polson, Montana, USA
| | - John E Dore
- Department of Land Resources and Environmental Sciences, Montana State University, Bozeman, Montana, USA
| | - Adam Baumann
- Flathead Lake Biological Station, University of Montana, Polson, Montana, USA
| | - Matthew J Church
- Flathead Lake Biological Station, University of Montana, Polson, Montana, USA
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Gao P, Yan X, Xia X, Liu D, Guo S, Ma R, Lou Y, Yang Z, Wang H, Yang Q, Pan H, Zhuge Y. Effects of the three amendments on NH 3 volatilization, N 2O emissions, and nitrification at four salinity levels: An indoor experiment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120399. [PMID: 38387357 DOI: 10.1016/j.jenvman.2024.120399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/16/2024] [Accepted: 02/12/2024] [Indexed: 02/24/2024]
Abstract
The marked salinity and alkaline pH of coastal saline soil profoundly impact the nitrogen conversion process, leading to a significantly reduced nitrogen utilization efficiency and substantial gaseous nitrogen loss. The application of soil amendments (e.g. biochar, manure, and gypsum) was proved to be effective for the remediation of saline soils. However, the effects of the three amendments on soil nitrogen transformation in soils with various salinity levels, especially on NH3 volatilization and N2O emission, remain elusive. Here, we reported the effects of biochar, manure, and gypsum on NH3 volatilization and N2O emission under four natural salinity gradients in the Yellow River Delta. Also, high-throughput sequencing and qPCR analysis were performed to characterize the response of nitrification (amoA) and denitrification (nirS, nirK, and nosZ) functional genes to the three amendments. The results showed that the three amendments had little effect on NH3 volatilization in low- and moderate-salinity soils, while biochar stimulated NH3 volatilization in high-salinity soils and reduced NH3 volatilization in severe-salinity soils. Spearman correlation analysis demonstrated that AOA was significantly and positively correlated with the NO3--N content (r = 0.137, P < 0.05) and N2O emissions (r = 0.174, P < 0.01), which indicated that AOA dominated N2O emissions from nitrification in saline soils. Structural equation modeling indicated that biochar, manure, and gypsum affected N2O emission by influencing soil pH, conductivity, mineral nitrogen content, and functional genes (AOA-amoA and nosZ). Two-way ANOVA further showed that salinity and amendments (biochar, manure, and gypsum) had significant effects on N2O emissions. In summary, this study provides valuable insights to better understand the effects of gaseous N changes in saline soils, thereby improving the accuracy and validity of future GHG emission predictions and modeling.
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Affiliation(s)
- Panpan Gao
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Daizong Road, Tai'an, 271018, China
| | - Xianghui Yan
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Daizong Road, Tai'an, 271018, China
| | - Xuejing Xia
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Daizong Road, Tai'an, 271018, China
| | - Dan Liu
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Daizong Road, Tai'an, 271018, China
| | - Songnian Guo
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Daizong Road, Tai'an, 271018, China
| | - Ronghui Ma
- Agricultural Technology Promotion Center of Shandong Province, Jinan, 252199, China
| | - Yanhong Lou
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Daizong Road, Tai'an, 271018, China
| | - Zhongchen Yang
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Daizong Road, Tai'an, 271018, China
| | - Hui Wang
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Daizong Road, Tai'an, 271018, China
| | - Quangang Yang
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Daizong Road, Tai'an, 271018, China
| | - Hong Pan
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Daizong Road, Tai'an, 271018, China.
| | - Yuping Zhuge
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Daizong Road, Tai'an, 271018, China.
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10
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Jiang C, Wu J, Ye J, Hong Y. High throughput amplicon analysis reveals potential novel ammonia oxidizing prokaryotes in the eutrophic Jiaozhou Bay. MARINE POLLUTION BULLETIN 2024; 200:116046. [PMID: 38246016 DOI: 10.1016/j.marpolbul.2024.116046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 12/07/2023] [Accepted: 01/11/2024] [Indexed: 01/23/2024]
Abstract
Ammonia-oxidizing prokaryotes (AOPs) are the major contributors of ammonia oxidization with widely distribution. Here we investigated the phylogenetic diversity, community composition, and regulating factors of AOPs in Jiaozhou Bay (JZB) with high-throughput sequencing of amoA gene. Phylogenetic analysis showed most of the OTUs could not be clustered with any known AOPs, indicating there might exist putative novel AOPs. With new developed protocols for AOP community analysis, we confirmed that only 3 OTUs of ammonia-oxidizing archaea (AOA) could be affiliated to known Nitrosopumilaceae and Nitrososphaera, and the other OTUs were identified as novel AOA based on the threshold. All abstained OTUs of ammonia-oxidizing bacteria (AOB) were identified as novel clusters based on the threshold. Further analysis showed the novel AOPs had different distribution characteristics related to environmental factors. The high abundance and widespread distribution of these novel AOPs indicated that they played an important role in ammonia conversion in eutrophic JZB.
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Affiliation(s)
- Cuihong Jiang
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Jiapeng Wu
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China.
| | - Jiaqi Ye
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Yiguo Hong
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China.
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11
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Trouche B, Schauberger C, Bouderka F, Auguet JC, Belser C, Poulain J, Thamdrup B, Wincker P, Arnaud-Haond S, Glud RN, Maignien L. Distribution and genomic variation of ammonia-oxidizing archaea in abyssal and hadal surface sediments. ISME COMMUNICATIONS 2023; 3:133. [PMID: 38135695 PMCID: PMC10746724 DOI: 10.1038/s43705-023-00341-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 11/20/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023]
Abstract
Ammonia-oxidizing archaea of the phylum Thaumarchaeota play a central role in the biogeochemical cycling of nitrogen in benthic sediments, at the interface between pelagic and subsurface ecosystems. However, our understanding of their niche separation and of the processes controlling their population structure in hadal and abyssal surface sediments is still limited. Here, we reconstructed 47 AOA metagenome-assembled genomes (MAGs) from surface sediments of the Atacama and Kermadec trench systems. They formed deep-sea-specific groups within the family Nitrosopumilaceae and were assigned to six amoA gene-based clades. MAGs from different clades had distinct distribution patterns along oxygen-ammonium counter gradients in surface sediments. At the species level, MAGs thus seemed to form different ecotypes and follow deterministic niche-based distributions. In contrast, intraspecific population structure, defined by patterns of Single Nucleotide Variants (SNV), seemed to reflect more complex contributions of both deterministic and stochastic processes. Firstly, the bathymetric range had a strong effect on population structure, with distinct populations in abyssal plains and hadal trenches. Then, hadal populations were clearly separated by trench system, suggesting a strong isolation-by-topography effect, whereas abyssal populations were rather controlled by sediment depth or geographic distances, depending on the clade considered. Interestingly, genetic variability between samples was lowest in sediment layers where the mean MAG coverage was highest, highlighting the importance of selective pressure linked with each AOA clade's ecological niche. Overall, our results show that deep-sea AOA genome distributions seem to follow both deterministic and stochastic processes, depending on the genomic variability scale considered.
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Affiliation(s)
- Blandine Trouche
- Univ Brest, CNRS, Ifremer, UMR6197 Biologie et Ecologie des Ecosystèmes marins Profonds, F-29280, Plouzané, France.
- Hadal & Nordcee, Department of Biology, University of Southern Denmark, Odense, Denmark.
| | - Clemens Schauberger
- Hadal & Nordcee, Department of Biology, University of Southern Denmark, Odense, Denmark
| | - Feriel Bouderka
- Univ Brest, CNRS, Ifremer, UMR6197 Biologie et Ecologie des Ecosystèmes marins Profonds, F-29280, Plouzané, France
| | | | - Caroline Belser
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, University of Évry, Université Paris-Saclay, 91057, Evry, France
| | - Julie Poulain
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, University of Évry, Université Paris-Saclay, 91057, Evry, France
| | - Bo Thamdrup
- Hadal & Nordcee, Department of Biology, University of Southern Denmark, Odense, Denmark
| | - Patrick Wincker
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, University of Évry, Université Paris-Saclay, 91057, Evry, France
| | | | - Ronnie N Glud
- Hadal & Nordcee, Department of Biology, University of Southern Denmark, Odense, Denmark
- Department of Ocean and Environmental Sciences, Tokyo University of Marine Science and Technology, Tokyo, Japan
- Danish Institute for Advanced Study (DIAS), University of Southern Denmark, Campusvej 55, 5230, Odense, Denmark
| | - Loïs Maignien
- Univ Brest, CNRS, Ifremer, UMR6197 Biologie et Ecologie des Ecosystèmes marins Profonds, F-29280, Plouzané, France.
- Marine Biological Laboratory, Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Woods Hole, MA, USA.
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12
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Martinez-Gutierrez CA, Uyeda JC, Aylward FO. A timeline of bacterial and archaeal diversification in the ocean. eLife 2023; 12:RP88268. [PMID: 38059790 DOI: 10.7554/elife.88268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023] Open
Abstract
Microbial plankton play a central role in marine biogeochemical cycles, but the timing in which abundant lineages diversified into ocean environments remains unclear. Here, we reconstructed the timeline in which major clades of bacteria and archaea colonized the ocean using a high-resolution benchmarked phylogenetic tree that allows for simultaneous and direct comparison of the ages of multiple divergent lineages. Our findings show that the diversification of the most prevalent marine clades spans throughout a period of 2.2 Ga, with most clades colonizing the ocean during the last 800 million years. The oldest clades - SAR202, SAR324, Ca. Marinimicrobia, and Marine Group II - diversified around the time of the Great Oxidation Event, during which oxygen concentration increased but remained at microaerophilic levels throughout the Mid-Proterozoic, consistent with the prevalence of some clades within these groups in oxygen minimum zones today. We found the diversification of the prevalent heterotrophic marine clades SAR11, SAR116, SAR92, SAR86, and Roseobacter as well as the Marine Group I to occur near to the Neoproterozoic Oxygenation Event (0.8-0.4 Ga). The diversification of these clades is concomitant with an overall increase of oxygen and nutrients in the ocean at this time, as well as the diversification of eukaryotic algae, consistent with the previous hypothesis that the diversification of heterotrophic bacteria is linked to the emergence of large eukaryotic phytoplankton. The youngest clades correspond to the widespread phototrophic clades Prochlorococcus, Synechococcus, and Crocosphaera, whose diversification happened after the Phanerozoic Oxidation Event (0.45-0.4 Ga), in which oxygen concentrations had already reached their modern levels in the atmosphere and the ocean. Our work clarifies the timing at which abundant lineages of bacteria and archaea colonized the ocean, thereby providing key insights into the evolutionary history of lineages that comprise the majority of prokaryotic biomass in the modern ocean.
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Affiliation(s)
| | - Josef C Uyeda
- Department of Biological Sciences, Virginia Tech, Blacksburg, United States
| | - Frank O Aylward
- Department of Biological Sciences, Virginia Tech, Blacksburg, United States
- Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Tech, Blacksburg, United States
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13
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Zhao J, Huang L, Chakrabarti S, Cooper J, Choi E, Ganan C, Tolchinsky B, Triplett EW, Daroub SH, Martens-Habbena W. Nitrogen and phosphorous acquisition strategies drive coexistence patterns among archaeal lineages in soil. THE ISME JOURNAL 2023; 17:1839-1850. [PMID: 37596409 PMCID: PMC10579303 DOI: 10.1038/s41396-023-01493-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/06/2023] [Accepted: 08/08/2023] [Indexed: 08/20/2023]
Abstract
Soil represents the largest reservoir of Archaea on Earth. Present-day archaeal diversity in soils globally is dominated by members of the class Nitrososphaeria. The evolutionary radiation of this class is thought to reflect adaptations to a wide range of temperatures, pH, and other environmental conditions. However, the mechanisms that govern competition and coexistence among Nitrososphaeria lineages in soil remain poorly understood. Here we show that predominant soil Nitrososphaeria lineages compose a patchwork of gene inventory and expression profiles for ammonia, urea, and phosphate utilization. In contrast, carbon fixation, respiration, and ATP synthesis genes are conserved and expressed consistently among predominant phylotypes across 12 major evolutionary lineages commonly found in soil. In situ gene expression profiles closely resemble pure culture reference strains under optimal growth conditions. Together, these results reveal resource-based coexistence patterns among Nitrososphaeria lineages and suggest complementary ecophysiological niches associated with differential nutrient acquisition strategies among globally predominant archaeal lineages in soil.
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Affiliation(s)
- Jun Zhao
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA
| | - Laibin Huang
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA
| | - Seemanti Chakrabarti
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA
| | - Jennifer Cooper
- Everglades Research and Education Center, Soil and Water Sciences Department, University of Florida, Belle Glade, FL, 33430, USA
| | - EunKyung Choi
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA
| | - Carolina Ganan
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA
| | - Bryn Tolchinsky
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA
| | - Eric W Triplett
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, 32611, USA
| | - Samira H Daroub
- Everglades Research and Education Center, Soil and Water Sciences Department, University of Florida, Belle Glade, FL, 33430, USA
| | - Willm Martens-Habbena
- Fort Lauderdale Research and Education Center, Department of Microbiology and Cell Science, University of Florida, Davie, FL, 33314, USA.
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14
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Wang XW, Tan X, Dang CC, Lu Y, Xie GJ, Liu BF. Thermophilic microorganisms involved in the nitrogen cycle in thermal environments: Advances and prospects. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 896:165259. [PMID: 37400035 DOI: 10.1016/j.scitotenv.2023.165259] [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: 12/04/2022] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 07/05/2023]
Abstract
Thermophilic microorganisms mediated significant element cycles and material conversion in the early Earth as well as mediating current thermal environments. Over the past few years, versatile microbial communities that drive the nitrogen cycle have been identified in thermal environments. Understanding the microbial-mediated nitrogen cycling processes in these thermal environments has important implications for the cultivation and application of thermal environment microorganisms as well as for exploring the global nitrogen cycle. This work provides a comprehensive review of different thermophilic nitrogen-cycling microorganisms and processes, which are described in detail according to several categories, including nitrogen fixation, nitrification, denitrification, anaerobic ammonium oxidation, and dissimilatory nitrate reduction to ammonium. In particular, we assess the environmental significance and potential applications of thermophilic nitrogen-cycling microorganisms, and highlight knowledge gaps and future research opportunities.
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Affiliation(s)
- Xiao-Wei Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xin Tan
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Cheng-Cheng Dang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yang Lu
- The Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, Queensland 4072, Australia
| | - Guo-Jun Xie
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Bing-Feng Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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15
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Malard LA, Guisan A. Into the microbial niche. Trends Ecol Evol 2023; 38:936-945. [PMID: 37236880 DOI: 10.1016/j.tree.2023.04.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 04/19/2023] [Accepted: 04/27/2023] [Indexed: 05/28/2023]
Abstract
The environmental niche concept describes the distribution of a taxon in the environment and can be used to understand community dynamics, biological invasions, and the impact of environmental changes. The uses and applications are still restricted in microbial ecology, largely due to the complexity of microbial systems and associated methodological limitations. The development of shotgun metagenomics and metatranscriptomics opens new ways to investigate the microbial niche by focusing on the metabolic niche within the environmental space. Here, we propose the metabolic niche framework, which, by defining the fundamental and realised metabolic niche of microorganisms, has the potential to not only provide novel insights into habitat preferences and the metabolism associated, but also to inform on metabolic plasticity, niche shifts, and microbial invasions.
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Affiliation(s)
- Lucie A Malard
- Department of Ecology and Evolution, University of Lausanne, 1015 Lausanne, Switzerland.
| | - Antoine Guisan
- Department of Ecology and Evolution, University of Lausanne, 1015 Lausanne, Switzerland; Institute of Earth Surface Dynamics, University of Lausanne, 1015 Lausanne, Switzerland
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16
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Li H, Hill N, Wallace J. A perennial living mulch system fosters a more diverse and balanced soil bacterial community. PLoS One 2023; 18:e0290608. [PMID: 37643167 PMCID: PMC10464973 DOI: 10.1371/journal.pone.0290608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 08/11/2023] [Indexed: 08/31/2023] Open
Abstract
Cover crops are known to positively impact soil health, both at a physical level (through erosion control and organic matter enhancement) and at a biological level (by fostering more diverse microbial communities). However, most research in this area has been conducted in the context of annual cover crops that are terminated when the main crop is planted. We have previously demonstrated that a continuous "living mulch" cover crop system can enhance the physical and chemical aspects of soil health; In this study, we reveal its effect on the soil bacterial community and compare it to two different annual cover crops and a conventional control without cover crops. We examined the effect of a living-mulch (LM) system using perennial white clover (Trifolium pratense L), annual cereal rye (Secale cereale L.) (CR), annual crimson clover (Trifolium incarnatum L.) (CC), and a no-cover (NC) control at three time points during the 2018 growing season. 16S rRNA amplicon analysis of the soil bacterial community revealed that the community composition in cover crop systems was significantly different from the NC control, and that LM and CR accommodated more heterogeneous and even bacterial communities compared to the NC control. The difference in bacterial composition between cover crop systems appears to be partly influenced by soil nitrogen concentration and lime buffer capacity. Overall community diversity was associated with nitrogen and metal ion concentrations, and these associations were both stronger and more numerous later in the season. These results elucidate how a perennial cover crop system affects the soil bacterial community and advance our understanding of the interactions between crops, management practices, and soil microbiomes in sustainable agriculture.
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Affiliation(s)
- Hanxia Li
- Institute of Bioinformatics, The University of Georgia, Athens, GA, United States of America
| | - Nicholas Hill
- Crop and Soil Sciences, The University of Georgia, Athens, GA, United States of America
| | - Jason Wallace
- Crop and Soil Sciences, The University of Georgia, Athens, GA, United States of America
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17
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Wang Y, Zeng X, Zhang Y, Zhang N, Xu L, Wu C. Responses of potential ammonia oxidation and ammonia oxidizers community to arsenic stress in seven types of soil. J Environ Sci (China) 2023; 127:15-29. [PMID: 36522049 DOI: 10.1016/j.jes.2022.02.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/21/2022] [Accepted: 02/22/2022] [Indexed: 06/17/2023]
Abstract
Soil arsenic contamination is of great concern because of its toxicity to human, crops, and soil microorganisms. However, the impacts of arsenic on soil ammonia oxidizers communities remain unclear. Seven types of soil spiked with 0 or 100 mg arsenic per kg soil were incubated for 180 days and sampled at days 1, 15, 30, 90 and 180. The changes in the community composition and abundance of ammonia oxidizing bacteria (AOB) and ammonia oxidizing archaea (AOA) were analyzed by terminal restriction fragment length polymorphism (T-RFLP) analysis, clone library sequencing, and quantitative PCR (qPCR) targeting amoA gene. Results revealed considerable variations in the potential ammonia oxidation (PAO) rates in different soils, but soil PAO was not consistently significantly inhibited by arsenic, probably due to the low bioavailable arsenic contents or the existence of functional redundancy between AOB and AOA. The variations in AOB and AOA communities were closely associated with the changes in arsenic fractionations. The amoA gene abundances of AOA increased after arsenic addition, whereas AOB decreased, which corroborated the notion that AOA and AOB might occupy different niches in arsenic-contaminated soils. Phylogenetic analysis of amoA gene-encoded proteins revealed that all AOB clone sequences belonged to the genus Nitrosospira, among which those belonging to Nitrosospira cluster 3a were dominant. The main AOA sequence detected belonged to Thaumarchaeal Group 1.1b, which was considered to have a high ability to adapt to environmental changes. Our results provide new insights into the impacts of arsenic on the soil nitrogen cycling.
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Affiliation(s)
- Yanan Wang
- Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Institute of Environment and Sustainable Development in Agriculture, Ministry of Agriculture and Rural Affairs of the P.R. China, Beijing 100081, China
| | - Xibai Zeng
- Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Institute of Environment and Sustainable Development in Agriculture, Ministry of Agriculture and Rural Affairs of the P.R. China, Beijing 100081, China.
| | - Yang Zhang
- Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Institute of Environment and Sustainable Development in Agriculture, Ministry of Agriculture and Rural Affairs of the P.R. China, Beijing 100081, China
| | - Nan Zhang
- Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Institute of Environment and Sustainable Development in Agriculture, Ministry of Agriculture and Rural Affairs of the P.R. China, Beijing 100081, China
| | - Liyang Xu
- Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Institute of Environment and Sustainable Development in Agriculture, Ministry of Agriculture and Rural Affairs of the P.R. China, Beijing 100081, China
| | - Cuixia Wu
- Chinese Academy of Agricultural Sciences, Key Laboratory of Agro-Environment, Institute of Environment and Sustainable Development in Agriculture, Ministry of Agriculture and Rural Affairs of the P.R. China, Beijing 100081, China
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18
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Ma B, LaPara TM, Kim T, Hozalski RM. Multi-scale Investigation of Ammonia-Oxidizing Microorganisms in Biofilters Used for Drinking Water Treatment. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:3833-3842. [PMID: 36811531 DOI: 10.1021/acs.est.2c06858] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Ammonia-oxidizing microorganisms (AOMs) include ammonia-oxidizing bacteria (AOB), archaea (AOA), and Nitrospira spp. sublineage II capable of complete ammonia oxidation (comammox). These organisms can affect water quality not only by oxidizing ammonia to nitrite (or nitrate) but also by cometabolically degrading trace organic contaminants. In this study, the abundance and composition of AOM communities were investigated in full-scale biofilters at 14 facilities across North America and in pilot-scale biofilters operated for 18 months at a full-scale water treatment plant. In general, the relative abundance of AOM in most full-scale biofilters and in the pilot-scale biofilters was as follows: AOB > comammox Nitrospira > AOA. The abundance of AOB in the pilot-scale biofilters increased with increasing influent ammonia concentration and decreasing temperature, whereas AOA and comammox Nitrospira exhibited no correlations with these parameters. The biofilters affected AOM abundance in the water passing through the filters via collecting and shedding but exhibited a minor influence on the composition of AOB and Nitrospira sublineage II communities in the filtrate. Overall, this study highlights the relative importance of AOB and comammox Nitrospira compared to AOA in biofilters and the influence of filter influent water quality on AOM in biofilters and their release into the filtrate.
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Affiliation(s)
- Ben Ma
- Department of Civil, Environmental, and Geo-Engineering, University of Minnesota, 500 Pillsbury Dr. SE, Minneapolis, Minnesota 55455, United States
| | - Timothy M LaPara
- Department of Civil, Environmental, and Geo-Engineering, University of Minnesota, 500 Pillsbury Dr. SE, Minneapolis, Minnesota 55455, United States
- Biotechnology Institute, University of Minnesota, 1479 Gortner Avenue, Saint Paul, Minnesota 55108, United States
| | - Taegyu Kim
- Department of Civil, Environmental, and Geo-Engineering, University of Minnesota, 500 Pillsbury Dr. SE, Minneapolis, Minnesota 55455, United States
| | - Raymond M Hozalski
- Department of Civil, Environmental, and Geo-Engineering, University of Minnesota, 500 Pillsbury Dr. SE, Minneapolis, Minnesota 55455, United States
- Biotechnology Institute, University of Minnesota, 1479 Gortner Avenue, Saint Paul, Minnesota 55108, United States
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19
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Jia Y, Lahm M, Chen Q, Powers L, Gonsior M, Chen F. The Predominance of Ammonia-Oxidizing Archaea in an Oceanic Microbial Community Amended with Cyanobacterial Lysate. Microbiol Spectr 2023; 11:e0240522. [PMID: 36622233 PMCID: PMC9927567 DOI: 10.1128/spectrum.02405-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
When the oligotrophic microbial community was amended with Synechococcus-derived dissolved organic matter (SDOM) and incubated under the dark condition, archaea relative abundance was initially very low but made up more than 60% of the prokaryotic community on day 60, and remained dominant for at least 9 months. The archaeal sequences were dominated by Candidatus Nitrosopumilus, the Group I.1a Thaumarchaeota. The increase of Thaumarchaeota in the dark incubation corresponded to the period of delayed ammonium oxidation upon an initially steady increase in ammonia, supporting the remarkable competency of Thaumarchaeota in energy utilization and fixation of inorganic carbon in the ocean. IMPORTANCE Thaumarchaeota, which are ammonia-oxidizing archaea (AOA), are mainly chemolithoautotrophs that can fix inorganic carbon to produce organic matter in the dark. Their distinctive physiological traits and high abundance in the water column indicate the significant ecological roles they play in the open ocean. In our study, we found predominant Thaumarchaeota in the microbial community amended with cyanobacteria-derived lysate under the dark condition. Furthermore, Thaumarchaeota remained dominant in the microbial community even after 1 year of incubation. Through the ammonification process, dissolved organic matter (DOM) from cyanobacterial lysate was converted to ammonium which was used as an energy source for Thaumarchaeota to fix inorganic carbon into biomass. Our study further advocates the important roles of Thaumarchaeota in the ocean's biogeochemical cycle.
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Affiliation(s)
- Yufeng Jia
- Institute of Marine and Environmental Technology, University of Maryland Center for Environmental Science, Baltimore, Maryland, USA
| | - Madeline Lahm
- Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Cambridge, Maryland, USA
| | - Qi Chen
- Institute of Marine and Environmental Technology, University of Maryland Center for Environmental Science, Baltimore, Maryland, USA
- State Key Laboratory for Marine Environmental Science, Institute of Marine Microbes and Ecospheres, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
- Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, China
| | - Leanne Powers
- Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Cambridge, Maryland, USA
- State University of New York College of Environmental Science and Forestry, Department of Chemistry, Syracuse, New York, USA
| | - Michael Gonsior
- Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, Cambridge, Maryland, USA
| | - Feng Chen
- Institute of Marine and Environmental Technology, University of Maryland Center for Environmental Science, Baltimore, Maryland, USA
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20
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Liu Y, Xu F, Ding L, Zhang G, Bai B, Han Y, Xiao L, Song Y, Li Y, Wan S, Li G. Microplastics reduce nitrogen uptake in peanut plants by damaging root cells and impairing soil nitrogen cycling. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130384. [PMID: 36444071 DOI: 10.1016/j.jhazmat.2022.130384] [Citation(s) in RCA: 40] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/28/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
Microplastic (MP) pollution severely impairs the sustainable development of modern agriculture. However, the mechanisms underlying the effects of MP contaminants on nutrient cycles in agroecosystems are poorly understood. In this study, we examined the impacts of two types of MPs, polypropylene (PP) and rubber crumb (RC), on nitrogen (N) transformation and N cycling in soil-peanut system. High concentrations of PP (1% w/w) and RC (1% w/w) inhibited vegetative growth and N uptake in peanut plants by damaging root cells and disturbing soil N cycling. These MPs damaged the plasma membranes of root cells and caused oxidative stress, as evidenced by the decreased number of xylem vessels, which in turn inhibited N uptake by roots. Integrated metagenomic and metabolomic analyses revealed that the differential soil metabolite levels in response to MP treatment affected the microbial community structure in the rhizosphere and the expression of key N cycling-related genes, resulting in altered N transformation and the decreased availability of N in rhizosphere soil. These findings provide the first evidence of the effects of MPs on N uptake in peanut plants and shed light on the importance of rational management of MPs for crop growth and yield in agroecosystems.
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Affiliation(s)
- Yiyang Liu
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Fangji Xu
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Liping Ding
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Guanchu Zhang
- Shandong Peanut Research Institute, No.126, Wannianquan Road, Licang District, Qingdao 266100, China
| | - Bo Bai
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Yan Han
- Shandong Academy of Grape, Jinan 250199, China
| | - Lina Xiao
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Yan Song
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Ying Li
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Shubo Wan
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences, Jinan 250100, China.
| | - Guowei Li
- Institute of Crop Germplasm Resources, Shandong Academy of Agricultural Sciences, Jinan 250100, China.
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21
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Li S, Wang C, Yang S, Chen W, Li G, Luo W, Wei G, Chen C. Determining the contribution of microbiome complexity to the soil nutrient heterogeneity of fertile islands in a desert ecosystem. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 857:159355. [PMID: 36240927 DOI: 10.1016/j.scitotenv.2022.159355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/27/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
"Fertile islands" are known as hotspots of soil nutrient spatial heterogeneity in dryland ecosystems. Although soil microorganisms play critical functional roles in nutrient capture and cycling within fertile islands, our understanding of polymicrobial community roles in regulating soil nutrient distribution in fertile islands remains limited. Herein, we aim to clarify the relationships between the complexity of soil microbial (bacterial, archaeal and fungal) communities and the nutrient distribution around fertile islands. Soil samples were collected along vertical profiles at varying depths in three patches under the canopy of Hedysarum scoparium (CENTRE), at the edge (EDGE) of the canopy and outside (OUTSIDE) the canopy in an area of flowing sand. All the three microbiota have showed spatial heterogeneity around the fertile islands. Among them, bacteria had the most significant heterogeneity, and bacterial community assembly was dominated by deterministic processes. Microbial interaction patterns also showed spatial heterogeneity among different patches. More interaction complexity within microbiota was found in the bacteria in the CENTRE patch and in the fungi in the OUTSIDE patch. In addition, the proportions of among-kingdom connections were reduced under the canopies. Bacteria had the highest connectivity and centrality in the polymicrobial networks and were the most important predictor of polymicrobial interaction complexity, which may have contributed to the distribution of soil nutrients. The random forest (RF) model provided evidence that bacterial beta-diversity and the polymicrobial network complexity index can be optimal predictors of the soil multinutrient cycling index. Our study highlighted the responses of bacteria and polymicrobial interactions to fertile islands and their importance in driving soil nutrient heterogeneity. This information will help in managing soil microorganisms to provide dryland ecosystem services.
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Affiliation(s)
- Shuyue Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Chang Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Shanshan Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Weimin Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Guoqiang Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Wen Luo
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China
| | - Gehong Wei
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China.
| | - Chun Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, China.
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22
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Ohbayashi T, Wang Y, Aoyagi LN, Hara S, Tago K, Hayatsu M. Diversity of the Hydroxylamine Oxidoreductase (HAO) Gene and Its Enzyme Active Site in Agricultural Field Soils. Microbes Environ 2023; 38:ME23068. [PMID: 38092410 PMCID: PMC10728637 DOI: 10.1264/jsme2.me23068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 10/06/2023] [Indexed: 12/18/2023] Open
Abstract
Nitrification is a key process in the biogeochemical nitrogen cycle and a major emission source of the greenhouse gas nitrous oxide (N2O). The periplasmic enzyme hydroxylamine oxidoreductase (HAO) is involved in the oxidation of hydroxylamine to nitric oxide in the second step of nitrification, producing N2O as a byproduct. Its three-dimensional structure demonstrates that slight differences in HAO active site residues have inhibitor effects. Therefore, a more detailed understanding of the diversity of HAO active site residues in soil microorganisms is important for the development of novel nitrification inhibitors using structure-guided drug design. However, this has not yet been examined. In the present study, we investigated hao gene diversity in beta-proteobacterial ammonia-oxidizing bacteria (β-AOB) and complete ammonia-oxidizing (comammox; Nitrospira spp.) bacteria in agricultural fields using a clone library ana-lysis. A total of 1,949 hao gene sequences revealed that hao gene diversity in β-AOB and comammox bacteria was affected by the fertilizer treatment and field type, respectively. Moreover, hao sequences showed the almost complete conservation of the six HAO active site residues in both β-AOB and comammox bacteria. The diversity of nitrifying bacteria showed similarity between hao and amoA genes. The nxrB amplicon sequence revealed the dominance of Nitrospira cluster II in tea field soils. The present study is the first to reveal hao gene diversity in agricultural soils, which will accelerate the efficient screening of HAO inhibitors and evaluations of their suppressive effects on nitrification in agricultural soils.
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Affiliation(s)
- Tsubasa Ohbayashi
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), 305–8604, Tsukuba, Japan
| | - Yong Wang
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), 305–8604, Tsukuba, Japan
| | - Luciano Nobuhiro Aoyagi
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), 305–8604, Tsukuba, Japan
| | - Shintaro Hara
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), 305–8604, Tsukuba, Japan
| | - Kanako Tago
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), 305–8604, Tsukuba, Japan
| | - Masahito Hayatsu
- Institute for Agro-Environmental Sciences, National Agriculture and Food Research Organization (NARO), 305–8604, Tsukuba, Japan
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23
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Lu Y, Hua Y, Lv N, Zu W, Kronzucker HJ, Dong G, Shi W. Syringic acid from rice roots inhibits soil nitrification and N 2O emission under red and paddy soils but not a calcareous soil. FRONTIERS IN PLANT SCIENCE 2022; 13:1099689. [PMID: 36605956 PMCID: PMC9808040 DOI: 10.3389/fpls.2022.1099689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Syringic acid (SA) is a novel biological nitrification inhibitor (BNIs) discovered in rice root exudates with significant inhibition of Nitrosomonas strains. However, the inhibitory effect of SA on nitrification and nitrous oxide (N2O) emissions in different soils and the environmental factors controlling the degree of inhibition have not been studied. Using 14-day microcosm incubation, we investigated the effects of different concentrations of SA on nitrification activity, abundance of ammonia-oxidizing microorganisms, and N2O emissions in three typical agricultural soils. The nitrification inhibitory efficacy of SA was strongest in acidic red soil, followed by weakly acidic paddy soil, with no significant effect in an alkaline calcareous soil. Potential nitrification activity (PNA) were also greatly reduced by SA additions in paddy and red soil. Pearson correlation analysis showed that the inhibitory efficacy of SA might be negatively correlated with soil pH and positively correlated with clay percentage. SA treatments significantly reduced N2O emissions by 69.1-79.3% from paddy soil and by 40.8%-46.4% from red soil, respectively, but no effect was recorded in the calcareous soil. SA addition possessed dual inhibition of both ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) abundance in paddy and red soil. Structural equation modelling revealed that soil ammonium (NH4 +) and dissolved organic carbon content (DOC) were the key variables explaining AOA and AOB abundance and subsequent N2O emissions. Our results support the potential for the use of the BNI SA in mitigating N2O emissions and enhancing N utilization in red and paddy soils.
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Affiliation(s)
- Yufang Lu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yao Hua
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Na Lv
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Weijun Zu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
| | - Herbert J. Kronzucker
- School of BioSciences, The University of Melbourne, Parkville, VIC, Australia
- Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, Canada
| | | | - Weiming Shi
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
- University of Chinese Academy of Sciences, Beijing, China
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24
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Shulga N, Abramov S, Klyukina A, Ryazantsev K, Gavrilov S. Fast-growing Arctic Fe-Mn deposits from the Kara Sea as the refuges for cosmopolitan marine microorganisms. Sci Rep 2022; 12:21967. [PMID: 36539439 PMCID: PMC9768204 DOI: 10.1038/s41598-022-23449-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 10/31/2022] [Indexed: 12/24/2022] Open
Abstract
The impact of biomineralization and redox processes on the formation and growth of ferromanganese deposits in the World Ocean remains understudied. This problem is particularly relevant for the Arctic marine environment where sharp seasonal variations of temperature, redox conditions, and organic matter inflow significantly impact the biogenic and abiotic pathways of ferromanganese deposits formation. The microbial communities of the fast-growing Arctic Fe-Mn deposits have not been reported so far. Here, we describe the microbial diversity, structure and chemical composition of nodules, crust and their underlying sediments collected from three different sites of the Kara Sea. Scanning electron microscopy revealed a high abundance of microfossils and biofilm-like structures within the nodules. Phylogenetic profiling together with redundancy and correlation analyses revealed a positive selection for putative metal-reducers (Thermodesulfobacteriota), iron oxidizers (Hyphomicrobiaceae and Scalinduaceae), and Fe-scavenging Nitrosopumilaceae or Magnetospiraceae in the microenvironments of the Fe-Mn deposits from their surrounding benthic microbial populations. We hypothesize that in the Kara Sea, the nodules provide unique redox-stable microniches for cosmopolitan benthic marine metal-cycling microorganisms in an unsteady environment, thus focusing the overall geochemical activity of nodule-associated microbial communities and accelerating processes of ferromanganese deposits formation to uniquely high rates.
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Affiliation(s)
- Natalia Shulga
- grid.426292.90000 0001 2295 4196Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia
| | - Sergey Abramov
- grid.5719.a0000 0004 1936 9713Department of Environmental Microbiology, Institute of Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, Stuttgart, Germany
| | - Alexandra Klyukina
- grid.4886.20000 0001 2192 9124Winogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, Russia
| | - Konstantin Ryazantsev
- grid.4886.20000 0001 2192 9124Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Sergey Gavrilov
- grid.4886.20000 0001 2192 9124Winogradsky Institute of Microbiology, Research Center of Biotechnology, Russian Academy of Sciences, Moscow, Russia
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25
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Gottshall EY, Godfrey B, Li B, Abrahamson B, Qin W, Winkler M. Photoinhibition of comammox reaction in Nitrospira inopinata in a dose- and wavelength-dependent manner. Front Microbiol 2022; 13:1022899. [PMID: 36590435 PMCID: PMC9797979 DOI: 10.3389/fmicb.2022.1022899] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/22/2022] [Indexed: 12/23/2022] Open
Abstract
Apparent contribution of complete ammonia-oxidizing organisms (comammox) to the global nitrogen cycle highlights the necessity for understanding niche differentiation of comammox bacteria among other ammonia oxidizers. While the high affinity for ammonia of the comammox species Nitrospira inopinata suggests their niche partitioning is expected to be centered in oligotrophic environments, their absence in nutrient-depleted environments (such as the oceans) suggests that other (abiotic) factors might control their distribution and spatial localization within microbial communities. Many ammonia- and nitrite-oxidizing organisms are sensitive to light; however, the photosensitivity of comammox has not been explored. Since comammox bacteria encode enzymatic machinery homologous to canonical ammonia-and nitrite-oxidizers, we hypothesized that comammox N. inopinata, the only available pure culture of this group of microorganisms, may be inhibited by illumination in a similar manner. We evaluated the impact of light intensity, wavelength, and duration on the degree of photoinhibition for cultures of the comammox species N. inopinata and the soil ammonia-oxidizing archaea Nitrososphaera viennensis. Both species were highly sensitive to light. Interestingly, mimicking diurnal light exposure caused an uncoupling of ammonia and nitrite oxidation in N. inopinata, indicating nitrite oxidation might be more sensitive to light exposure than ammonia oxidation. It is likely that light influences comammox spatial distribution in natural environments such as surface fresh waters according to diurnal cycles, light attenuation coefficients, and the light penetration depths. Our findings therefore provide ecophysiological insights for further studies on comammox both in field and laboratory settings.
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Affiliation(s)
- Ekaterina Y. Gottshall
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, United States,*Correspondence: Ekaterina Y. Gottshall,
| | - Bruce Godfrey
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, United States
| | - Bo Li
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, United States
| | - Britt Abrahamson
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, United States
| | - Wei Qin
- Department of Microbiology and Plant Biology, Institute for Environmental Genomics, University of Oklahoma, Norman, OK, United States
| | - Mari Winkler
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, United States
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26
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Karpouzas DG, Vryzas Z, Martin-Laurent F. Pesticide soil microbial toxicity: setting the scene for a new pesticide risk assessment for soil microorganisms (IUPAC Technical Report). PURE APPL CHEM 2022. [DOI: 10.1515/pac-2022-0201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Pesticides constitute an integral part of modern agriculture. However, there are still concerns about their effects on non-target organisms. To address this the European Commission has imposed a stringent regulatory scheme for new pesticide compounds. Assessment of the aquatic toxicity of pesticides is based on a range of advanced tests. This does not apply to terrestrial ecosystems, where the toxicity of pesticides on soil microorganisms, is based on an outdated and crude test (N mineralization). This regulatory gap is reinforced by the recent methodological and standardization advances in soil microbial ecology. The inclusion of such standardized tools in a revised risk assessment scheme will enable the accurate estimation of the toxicity of pesticides on soil microorganisms and on associated ecosystem services. In this review we (i) summarize recent work in the assessment of the soil microbial toxicity of pesticides and point to ammonia-oxidizing microorganisms (AOM) and arbuscular mycorrhizal fungi (AMF) as most relevant bioindicator groups (ii) identify limitations in the experimental approaches used and propose mitigation solutions, (iii) identify scientific gaps and (iv) propose a new risk assessment procedure to assess the effects of pesticides on soil microorganisms.
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Affiliation(s)
- Dimitrios G. Karpouzas
- Department of Biochemistry and Biotechnology , Laboratory of Plant and Environmental Biotechnology, University of Thessaly , Viopolis 41500 , Larissa , Greece
| | - Zisis Vryzas
- Department of Agricultural Development , Democritus University of Thrace , Orestiada , Greece
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27
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Zou D, Li H, Du P, Wang B, Lin H, Liu H, Chen J, Li M. Distinct Features of Sedimentary Archaeal Communities in Hypoxia and Non-Hypoxia Regions off the Changjiang River Estuary. Microbiol Spectr 2022; 10:e0194722. [PMID: 36066619 PMCID: PMC9602602 DOI: 10.1128/spectrum.01947-22] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 08/12/2022] [Indexed: 12/31/2022] Open
Abstract
Water hypoxia (DO < 2 mg/L) is a growing global environmental concern that has the potential to significantly influence not only the aquatic ecosystem but also the benthic sedimentary ecosystem. The Changjiang River Estuary hypoxia, classified as one of the world's largest seasonal hypoxic water basins, has been reported to be expanding rapidly in recent decades. However, the microbial community dynamics and responses to this water hypoxia are still unclear. In this study, we examined the abundance, community composition, and distribution of sedimentary archaea, one important component of microbial communities in the Changjiang River Estuary and the East China Sea (ECS). Our results indicated that Thaumarchaeota and Bathyarchaeota were predominant archaeal groups in these research areas, with their 16S rRNA gene abundance ranged from 8.55 × 106 to 7.51 × 108 and 3.18 × 105 to 1.11 × 108 copies/g, respectively. The sedimentary archaeal community was mainly influenced by DO, together with the concentration of ammonium, nitrate, and sulfide. In addition, distinct differences in the archaeal community's composition, abundance, and driving factors were discovered between samples from hypoxia and non-hypoxia stations. Furtherly, microbial networks suggest various microbes leading the different activities in hypoxic and normoxic environments. Bathyarchaeota and Thermoprofundales were "key stone" archaeal members of the low-DO network, whereas Thaumarchaeota constituted a significant component of the high-DO network. Our results provide a clear picture of the sedimentary archaeal community in coastal hypoxia zones and indicates potential distinctions of archaea in hypoxia and non-hypoxia environments, including ecological niches and metabolic functions. IMPORTANCE In this study, the sedimentary archaeal community composition and abundance were detailed revealed and quantified based on 16S rRNA genes off the Changjiang River Estuary. We found that the community composition was distinct between hypoxia and non-hypoxia regions, while Thaumarchaeota and Bathyarchaeota dominated in non-hypoxia and hypoxia samples, respectively. In hypoxia regions, the sedimentary archaea were mainly affected by salinity, ammonium, and nitrate, whereas total organic carbon, total nitrogen, and sulfide were major influencing factors in non-hypoxia regions. The distinct microbial network may suggest the niche difference of archaeal community under various oxygen level.
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Affiliation(s)
- Dayu Zou
- Archaeal Biology Center, Institute for Advanced Study, Shenzhen University, Shenzhen, China
- Key Laboratory of Optoelectronic Devices and Systems, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, China
| | - Hongliang Li
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China
| | - Ping Du
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China
| | - Bin Wang
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China
| | - Hua Lin
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China
| | - Hongbin Liu
- Department of Ocean Science and Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), The Hong Kong University of Science and Technology, Hong Kong SAR, China
| | - Jianfang Chen
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China
| | - Meng Li
- Archaeal Biology Center, Institute for Advanced Study, Shenzhen University, Shenzhen, China
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, China
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28
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Zhou X, Lee J, Yun J, Kim J, Yang Y, Kang H. Distinct Nitrification Rates and Nitrifiers in Needleleaf and Evergreen Broadleaf Forest Soils. MICROBIAL ECOLOGY 2022:10.1007/s00248-022-02110-9. [PMID: 36151339 DOI: 10.1007/s00248-022-02110-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 09/02/2022] [Indexed: 06/16/2023]
Abstract
Research on niche specialization in the microbial communities of ammonia oxidizers is important for assessing the consequences of vegetation shift on nitrogen (N) cycling. In this study, soils were sampled from three tree stands (needleleaf, mixed, and evergreen broadleaf) from the Hannam experimental forest in South Korea in spring (May 2019), summer (August 2019), autumn (November 2019), and winter (January 2020). Quantitative polymerase chain reaction (qPCR) and high-throughput sequencing were used to measure the abundance and community structure of various nitrifiers: ammonia-oxidizing archaea and bacteria (AOA and AOB, respectively) as well as complete ammonia oxidizers (comammox). Nitrification rates and total ammonia oxidizer abundance were significantly higher in needleleaf forest soil than those in other forest stands, and they were lowest in evergreen broadleaf forest soil. Comammox clade B was most abundant in needleleaf and evergreen broadleaf forest soils, while AOA were significantly more abundant in mixed forest soil. The abundances of comammox clade B and AOA were negatively correlated with dissolved organic carbon. Phylogenetic analysis showed that NT-alpha and NS-gamma-2.3.2 were the most abundant AOA lineages in all the samples. The seasonal of AOA, AOB, and comammox varied with the sites, suggesting the need to examine the combinations of environmental factors when considering the effects of seasonal changes in the environment. Overall, the results suggest that potential vegetation shifts in forest ecosystems might affect nitrification activities by regulating the abundance and community structure of ammonia oxidizers.
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Affiliation(s)
- Xue Zhou
- School of Civil and Environmental Engineering, Yonsei University, Seoul, Korea
- College of Agricultural Science and Engineering, Hohai University, Nanjing, China
| | - Jaehyun Lee
- School of Civil and Environmental Engineering, Yonsei University, Seoul, Korea
| | - Jeongeun Yun
- School of Civil and Environmental Engineering, Yonsei University, Seoul, Korea
| | - Jinhyun Kim
- School of Civil and Environmental Engineering, Yonsei University, Seoul, Korea
| | - Yerang Yang
- School of Civil and Environmental Engineering, Yonsei University, Seoul, Korea
| | - Hojeong Kang
- School of Civil and Environmental Engineering, Yonsei University, Seoul, Korea.
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29
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Yang X, Yu X, He Q, Deng T, Guan X, Lian Y, Xu K, Shu L, Wang C, Yan Q, Yang Y, Wu B, He Z. Niche differentiation among comammox (Nitrospira inopinata) and other metabolically distinct nitrifiers. Front Microbiol 2022; 13:956860. [PMID: 36187961 PMCID: PMC9515657 DOI: 10.3389/fmicb.2022.956860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/11/2022] [Indexed: 11/13/2022] Open
Abstract
Due to global change, increasing nutrient input to ecosystems dramatically affects the nitrogen cycle, especially the nitrification process. Nitrifiers including ammonia-oxidizing archaea (AOAs), ammonia-oxidizing bacteria (AOBs), nitrite-oxidizing bacteria (NOBs), and recently discovered complete ammonia oxidizers (comammoxs) perform nitrification individually or in a community. However, much remains to be learned about their niche differentiation, coexistence, and interactions among those metabolically distinct nitrifiers. Here, we used synthetic microbial ecology approaches to construct synthetic nitrifying communities (SNCs) with different combinations of Nitrospira inopinata as comammox, Nitrososphaera gargensis as AOA, Nitrosomonas communis as AOB, and Nitrospira moscoviensis as NOB. Our results showed that niche differentiation and potential interactions among those metabolically distinct nitrifiers were determined by their kinetic characteristics. The dominant species shifted from N. inopinata to N. communis in the N4 community (with all four types of nitrifiers) as ammonium concentrations increased, which could be well explained by the kinetic difference in ammonia affinity, specific growth rate, and substrate tolerance of nitrifiers in the SNCs. In addition, a conceptual model was developed to infer niche differentiation and possible interactions among the four types of nitrifiers. This study advances our understanding of niche differentiation and provides new strategies to further study their interactions among the four types of nitrifiers.
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Affiliation(s)
- Xueqin Yang
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Xiaoli Yu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Qiang He
- Department of Civil and Environmental Engineering, The University of Tennessee, Knoxville, TN, United States
| | - Ting Deng
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Xiaotong Guan
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Yingli Lian
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Kui Xu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Longfei Shu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Cheng Wang
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Qingyun Yan
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
| | - Yuchun Yang
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Guangzhou, China
| | - Bo Wu
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
- *Correspondence: Bo Wu
| | - Zhili He
- Environmental Microbiomics Research Center, School of Environmental Science and Engineering, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Sun Yat-sen University, Guangzhou, China
- College of Agronomy, Hunan Agricultural University, Changsha, China
- Zhili He
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Lei J, Fan Q, Yu J, Ma Y, Yin J, Liu R. A meta-analysis to examine whether nitrification inhibitors work through selectively inhibiting ammonia-oxidizing bacteria. Front Microbiol 2022; 13:962146. [PMID: 35928162 PMCID: PMC9343776 DOI: 10.3389/fmicb.2022.962146] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 06/29/2022] [Indexed: 11/18/2022] Open
Abstract
Nitrification inhibitor (NI) is often claimed to be efficient in mitigating nitrogen (N) losses from agricultural production systems by slowing down nitrification. Increasing evidence suggests that ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) have the genetic potential to produce nitrous oxide (N2O) and perform the first step of nitrification, but their contribution to N2O and nitrification remains unclear. Furthermore, both AOA and AOB are probably targets for NIs, but a quantitative synthesis is lacking to identify the “indicator microbe” as the best predictor of NI efficiency under different environmental conditions. In this present study, a meta-analysis to assess the response characteristics of AOB and AOA to NI application was conducted and the relationship between NI efficiency and the AOA and AOB amoA genes response under different conditions was evaluated. The dataset consisted of 48 papers (214 observations). This study showed that NIs on average reduced 58.1% of N2O emissions and increased 71.4% of soil NH4+ concentrations, respectively. When 3, 4-dimethylpyrazole phosphate (DMPP) was applied with both organic and inorganic fertilizers in alkaline medium soils, it had higher efficacy of decreasing N2O emissions than in acidic soils. The abundance of AOB amoA genes was dramatically reduced by about 50% with NI application in most soil types. Decrease in N2O emissions with NI addition was significantly correlated with AOB changes (R2 = 0.135, n = 110, P < 0.01) rather than changes in AOA, and there was an obvious correlation between the changes in NH4+ concentration and AOB amoA gene abundance after NI application (R2 = 0.037, n = 136, P = 0.014). The results indicated the principal role of AOB in nitrification, furthermore, AOB would be the best predictor of NI efficiency.
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Fisk LM, Barton L, Maccarone LD, Jenkins SN, Murphy DV. Seasonal dynamics of ammonia-oxidizing bacteria but not archaea influence soil nitrogen cycling in a semi-arid agricultural soil. Sci Rep 2022; 12:7299. [PMID: 35508560 PMCID: PMC9068766 DOI: 10.1038/s41598-022-10711-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 04/11/2022] [Indexed: 12/02/2022] Open
Abstract
Nitrification, a key pathway of nitrogen (N) loss from agricultural soils, is performed by ammonia-oxidizing bacteria (AOB) and archaea (AOA). We examined the seasonal dynamics (2 years) of ammonia oxidizer gene abundances across a gradient of soil carbon (C) and N in a semi-arid soil after 8 years of tillage and crop residue treatments. AOB was more dominant than AOA in the surface soil, as AOA were undetected in 96% of samples. Seasonal variation in AOB abundance was related to substrate availability; AOB gene copy numbers increased at the end of the growing season (during summer fallow) following higher concentrations in dissolved organic matter soil water. This suggests increased co-location between AOB and substrate resources in pores still filled with water as the soils dried. AOB was however not statistically related to soil ammonium concentrations, soil water content, rainfall or temperature. Organic matter inputs enhanced AOB abundance independent of seasonal variation. AOB abundance was greatest in autumn and immediately preceding the start of the growing season, and coincided with elevated soil nitrate concentrations. The growth of the AOB population is likely to contribute to increased risk of N loss through leaching and/or denitrification at the start of the crop growing season following summer fallow.
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Affiliation(s)
- L M Fisk
- SoilsWest, UWA School of Agriculture and Environment, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - L Barton
- SoilsWest, UWA School of Agriculture and Environment, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia.
| | - L D Maccarone
- SoilsWest, UWA School of Agriculture and Environment, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - S N Jenkins
- SoilsWest, UWA School of Agriculture and Environment, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - D V Murphy
- SoilsWest, UWA School of Agriculture and Environment, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
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Soils and sediments host Thermoplasmata archaea encoding novel copper membrane monooxygenases (CuMMOs). THE ISME JOURNAL 2022; 16:1348-1362. [PMID: 34987183 PMCID: PMC9038741 DOI: 10.1038/s41396-021-01177-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 12/02/2021] [Accepted: 12/10/2021] [Indexed: 01/22/2023]
Abstract
Copper membrane monooxygenases (CuMMOs) play critical roles in the global carbon and nitrogen cycles. Organisms harboring these enzymes perform the first, and rate limiting, step in aerobic oxidation of ammonia, methane, or other simple hydrocarbons. Within archaea, only organisms in the order Nitrososphaerales (Thaumarchaeota) encode CuMMOs, which function exclusively as ammonia monooxygenases. From grassland and hillslope soils and aquifer sediments, we identified 20 genomes from distinct archaeal species encoding divergent CuMMO sequences. These archaea are phylogenetically clustered in a previously unnamed Thermoplasmatota order, herein named the Ca. Angelarchaeales. The CuMMO proteins in Ca. Angelarchaeales are more similar in structure to those in Nitrososphaerales than those of bacteria, and contain all functional residues required for general monooxygenase activity. Ca. Angelarchaeales genomes are significantly enriched in blue copper proteins (BCPs) relative to sibling lineages, including plastocyanin-like electron carriers and divergent nitrite reductase-like (nirK) 2-domain cupredoxin proteins co-located with electron transport machinery. Ca. Angelarchaeales also encode significant capacity for peptide/amino acid uptake and degradation and share numerous electron transport mechanisms with the Nitrososphaerales. Ca. Angelarchaeales are detected at high relative abundance in some of the environments where their genomes originated from. While the exact substrate specificities of the novel CuMMOs identified here have yet to be determined, activity on ammonia is possible given their metabolic and ecological context. The identification of an archaeal CuMMO outside of the Nitrososphaerales significantly expands the known diversity of CuMMO enzymes in archaea and suggests previously unaccounted organisms contribute to critical global nitrogen and/or carbon cycling functions.
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Lin G, Huang J, Luo K, Lin X, Su M, Lu J. Bacterial, archaeal, and fungal community structure and interrelationships of deep-sea shrimp intestine and the surrounding sediment. ENVIRONMENTAL RESEARCH 2022; 205:112461. [PMID: 34863691 DOI: 10.1016/j.envres.2021.112461] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/09/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
Invertebrate shrimp are one of the dominant benthic macrofaunae in the deep-sea environment. The microbiota of shrimp intestine can contribute to the adaptation of their host. The impact of surrounding sediment on intestinal microbiota has been observed in cultured shrimp species, but needs to be further investigated in deep-sea shrimp. The characterization of bacterial, archaeal, and fungal community structure and their interrelationships is also limited. In this study, wild-type deep-sea shrimp and the surrounding sediment were sampled. Shrimp individuals incubated in a sediment-absent environment were also used in this study. Microbial community structure of the shrimp intestine and sediment was investigated through amplicon sequencing targeting bacterial 16S rRNA genes, archaeal 16S rRNA genes, and fungal ITS genes. The results demonstrate distinct differences in community structure between shrimp intestine and the surrounding sediment and between surface and deep (5 mbsf) sediment. The composition of the intestinal microbiota in shrimp living without sediment was different from that of wild-type shrimp, indicating that the presence or absence of sediment could influence the shrimp intestinal microbiota. Carbohydrate metabolism, energy metabolism (carbon fixation, methane metabolism, nitrogen metabolism, and sulfur metabolism), amino acid metabolism, and xenobiotic biodegradation were the most commonly predicted microbial functionalities and they interacted closely with one another. Overall, this study provided comprehensive insights into bacterial, archaeal, and fungal community structure of deep-sea shrimp intestine as well as potential ecological interactions with the surrounding sediment. This study could update our understanding of the microbiota characteristics in shrimp and sediment in deep-sea ecosystems.
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Affiliation(s)
- Genmei Lin
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, Guangdong, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519080, Guangdong, China
| | - Junrou Huang
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, Guangdong, China
| | - Kunwen Luo
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, Guangdong, China
| | - Xianbiao Lin
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, Guangdong, China
| | - Ming Su
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, Guangdong, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519080, Guangdong, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou, 510275, Guangdong, China; Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Zhuhai, 519000, Guangdong, China
| | - Jianguo Lu
- School of Marine Sciences, Sun Yat-sen University, Zhuhai, 519082, Guangdong, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519080, Guangdong, China; Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou, 510275, Guangdong, China; Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Zhuhai, 519000, Guangdong, China.
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Effects of aquatic nitrogen pollution on particle-attached ammonia-oxidizing bacteria in urban freshwater mesocosms. World J Microbiol Biotechnol 2022; 38:64. [DOI: 10.1007/s11274-022-03251-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 02/16/2022] [Indexed: 11/27/2022]
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Changes in Ammonia-Oxidizing Archaea and Bacterial Communities and Soil Nitrogen Dynamics in Response to Long-Term Nitrogen Fertilization. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19052732. [PMID: 35270425 PMCID: PMC8910298 DOI: 10.3390/ijerph19052732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/23/2022] [Accepted: 02/24/2022] [Indexed: 11/16/2022]
Abstract
Ammonia oxidizing archaea (AOA) and bacteria (AOB) mediate a crucial step in nitrogen (N) metabolism. The effect of N fertilizer rates on AOA and AOB communities is less studied in the wheat-fallow system from semi-arid areas. Based on a 17-year wheat field experiment, we explored the effect of five N fertilizer rates (0, 52.5, 105, 157.5, and 210 kg ha-1 yr-1) on the AOA and AOB community composition. This study showed that the grain yield of wheat reached the maximum at 105 kg N ha-1 (49% higher than control), and no further significant increase was observed at higher N rates. With the increase of N, AOA abundance decreased in a regular trend from 4.88 × 107 to 1.05 × 107 copies g-1 dry soil, while AOB abundance increased from 3.63 × 107 up to a maximum of 8.24 × 107 copies g-1 dry soil with the N105 treatment (105 kg N ha-1 yr-1). Application rates of N fertilizer had a more significant impact on the AOB diversity than on AOA diversity, and the highest AOB diversity was found under the N105 treatment in this weak alkaline soil. The predominant phyla of AOA and AOB were Thaumarchaeota and Proteobacteria, respectively, and higher N treatment (N210) resulted in a significant decrease in the relative abundance of genus Nitrosospira. In addition, AOA and AOB communities were significantly associated with grain yield of wheat, soil potential nitrification activity (PNA), and some soil physicochemical parameters such as pH, NH4-N, and NO3-N. Among them, soil moisture was the most influential edaphic factor for structuring the AOA community and NH4-N for the AOB community. Overall, 105 kg N ha-1 yr-1 was optimum for the AOB community and wheat yield in the semi-arid area.
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Zhao J, Jing H, Wang Z, Wang L, Jian H, Zhang R, Xiao X, Chen F, Jiao N, Zhang Y. Novel Viral Communities Potentially Assisting in Carbon, Nitrogen, and Sulfur Metabolism in the Upper Slope Sediments of Mariana Trench. mSystems 2022; 7:e0135821. [PMID: 35089086 PMCID: PMC8725595 DOI: 10.1128/msystems.01358-21] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 12/08/2021] [Indexed: 01/12/2023] Open
Abstract
Viruses are ubiquitous in the oceans. Even in the deep sediments of the Mariana Trench, viruses have high productivity. However, little is known about their species composition and survival strategies in that environment. Here, we uncovered novel viral communities (3,206 viral scaffolds) in the upper slope sediments of the Mariana Trench via metagenomic analysis of 15 sediment samples. Most (99%) of the viral scaffolds lack known viral homologs, and ca. 59% of the high-quality viral genomes (total of 111 with completeness of >90%) represent novel genera, including some Phycodnaviridae and jumbo phages. These viruses contain various auxiliary metabolic genes (AMGs) potentially involved in organic carbon degradation, inorganic carbon fixation, denitrification, and assimilatory sulfate reduction, etc. This study provides novel insight into the almost unknown benthic viral communities in the Mariana Trench. IMPORTANCE The Mariana Trench harbors a substantial number of infective viral particles. However, very little is known about the identity, survival strategy, and potential functions of viruses in the trench sediments. Here, through metagenomic analysis, unusual benthic viral communities with high diversity and novelty were discovered. Among them, 59% of the viruses with a genome completeness of >90% represent novel genera. Various auxiliary metabolic genes carried by these viruses reflect the potential adaptive characteristics of viruses in this extreme environment and the biogeochemical cycles that they may participate in. This study gives us a deeper understanding of the peculiarities of viral communities in deep-sea/hadal sediments.
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Affiliation(s)
- Jiulong Zhao
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Hongmei Jing
- CAS Key Laboratory for Experimental Study under Deep-Sea Extreme Conditions, Institute of Deep-Sea Science and Engineering, Chinese Academy of Sciences, Sanya, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Zengmeng Wang
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Long Wang
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
- State Key Laboratory for Marine Environmental Science, Xiamen University, Xiamen, China
| | - Huahua Jian
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Rui Zhang
- State Key Laboratory for Marine Environmental Science, Xiamen University, Xiamen, China
| | - Xiang Xiao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Feng Chen
- University of Maryland Center for Environmental Science, Baltimore, Maryland, USA
| | - Nianzhi Jiao
- State Key Laboratory for Marine Environmental Science, Xiamen University, Xiamen, China
| | - Yongyu Zhang
- Key Laboratory of Biofuels, Shandong Provincial Key Laboratory of Energy Genetics, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
- University of Chinese Academy of Sciences, Beijing, China
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Marois C, Girard C, Klanten Y, Vincent WF, Culley AI, Antoniades D. Local Habitat Filtering Shapes Microbial Community Structure in Four Closely Spaced Lakes in the High Arctic. Front Microbiol 2022; 13:779505. [PMID: 35222324 PMCID: PMC8873593 DOI: 10.3389/fmicb.2022.779505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 01/20/2022] [Indexed: 11/13/2022] Open
Abstract
Arctic lakes are experiencing increasingly shorter periods of ice cover due to accelerated warming at northern high latitudes. Given the control of ice cover thickness and duration over many limnological processes, these changes will have pervasive effects. However, due to their remote and extreme locations even first-order data on lake ecology is lacking for many ecosystems. The aim of this study was to characterize and compare the microbial communities of four closely spaced lakes in Stuckberry Valley (northern Ellesmere Island, Canadian Arctic Archipelago), in the coastal margin zone of the Last Ice Area, that differed in their physicochemical, morphological and catchment characteristics. We performed high-throughput amplicon sequencing of the V4 16S rRNA gene to provide inter- and intra-lake comparisons. Two deep (>25 m) and mostly oxygenated lakes showed highly similar community assemblages that were distinct from those of two shallower lakes (<10 m) with anoxic bottom waters. Proteobacteria, Verrucomicrobia, and Planctomycetes were the major phyla present in the four water bodies. One deep lake contained elevated proportions of Cyanobacteria and Thaumarchaeota that distinguished it from the others, while the shallow lakes had abundant communities of predatory bacteria, as well as microbes in their bottom waters that contribute to sulfur and methane cycles. Despite their proximity, our data suggest that local habitat filtering is the primary determinant of microbial diversity in these systems. This study provides the first detailed examination of the microbial assemblages of the Stuckberry lakes system, resulting in new insights into the microbial ecology of the High Arctic.
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Affiliation(s)
- Catherine Marois
- Département de Biochimie, Microbiologie et Bio-Informatique, Université Laval, Québec, QC, Canada
- Centre d’Études Nordiques (CEN), Université Laval, Québec, QC, Canada
- Institut de Biologie Intégrative des Systèmes (IBIS), Université Laval, Québec, QC, Canada
| | - Catherine Girard
- Centre d’Études Nordiques (CEN), Université Laval, Québec, QC, Canada
- Département des Sciences Fondamentales, Université du Québec à Chicoutimi, Chicoutimi, QC, Canada
| | - Yohanna Klanten
- Centre d’Études Nordiques (CEN), Université Laval, Québec, QC, Canada
- Département de Géographie, Université Laval, Québec, QC, Canada
| | - Warwick F. Vincent
- Centre d’Études Nordiques (CEN), Université Laval, Québec, QC, Canada
- Institut de Biologie Intégrative des Systèmes (IBIS), Université Laval, Québec, QC, Canada
- Département de Biologie, Université Laval, Québec, QC, Canada
| | - Alexander I. Culley
- Département de Biochimie, Microbiologie et Bio-Informatique, Université Laval, Québec, QC, Canada
- Centre d’Études Nordiques (CEN), Université Laval, Québec, QC, Canada
- Institut de Biologie Intégrative des Systèmes (IBIS), Université Laval, Québec, QC, Canada
| | - Dermot Antoniades
- Centre d’Études Nordiques (CEN), Université Laval, Québec, QC, Canada
- Département de Géographie, Université Laval, Québec, QC, Canada
- *Correspondence: Dermot Antoniades,
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Sim JXF, Doolette CL, Vasileiadis S, Drigo B, Wyrsch ER, Djordjevic SP, Donner E, Karpouzas DG, Lombi E. Pesticide effects on nitrogen cycle related microbial functions and community composition. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 807:150734. [PMID: 34606862 DOI: 10.1016/j.scitotenv.2021.150734] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 09/20/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
The extensive application of pesticides in agriculture raises concerns about their potential negative impact on soil microorganisms, being the key drivers of nutrient cycling. Most studies have investigated the effect of a single pesticide on a nutrient cycling in single soil type. We, for the first time, investigated the effect of 20 commercial pesticides with different mode of actions, applied at their recommended dose and five times their recommended dose, on nitrogen (N) microbial cycling in three different agricultural soils from southern Australian. Functional effects were determined by measuring soil enzymatic activities of β-1,4-N-acetyliglucosaminidase (NAG) and l-leucine aminopeptidase (LAP), potential nitrification (PN), and the abundance of functional genes involved in N cycling (amoA and nifH). Effects on nitrifiers diversity were determined with amplicon sequencing. Overall, the pesticides effect on N microbial cycling was dose-independent and soil specific. The fungicides flutriafol and azoxystrobin, the herbicide chlorsulfuron and the insecticide fipronil induced a significant reduction in PN and β-1,4-N-acetylglucosaminidase activity (P < 0.05) (NAG) in the alkaline loam soil with low organic carbon content i.e. a soil with properties which typically favors pesticide bioavailability and therefore potential toxicity. For the nitrifier community, the greatest pesticide effects were on the most dominant Nitrososphaeraceae (ammonia-oxidizing archaea; AOA) whose abundance increased significantly compared to the less dominant AOA and other nitrifiers. The inhibiting effects were more evident in the soil samples treated with fungicides. By testing multiple pesticides in a single study, our findings provide crucial information that can be used for pesticide hazard assessment.
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Affiliation(s)
- Jowenna X F Sim
- Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia.
| | - Casey L Doolette
- Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Sotirios Vasileiadis
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Larissa, Viopolis 41500, Greece
| | - Barbara Drigo
- Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Ethan R Wyrsch
- iThree Institute, University of Technology Sydney, City Campus, Ultimo, NSW 2007, Australia; The Australian Centre for Genomic Epidemiological Microbiology, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Steven P Djordjevic
- iThree Institute, University of Technology Sydney, City Campus, Ultimo, NSW 2007, Australia; The Australian Centre for Genomic Epidemiological Microbiology, University of Technology Sydney, Ultimo, NSW 2007, Australia
| | - Erica Donner
- Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia
| | - Dimitrios G Karpouzas
- University of Thessaly, Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, Larissa, Viopolis 41500, Greece
| | - Enzo Lombi
- Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia; University of South Australia, UniSA STEM, Mawson Lakes, South Australia 5095, Australia
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Hedlund BP, Zhang C, Wang F, Rinke C, Martin WF. Editorial: Ecology, Metabolism and Evolution of Archaea-Perspectives From Proceedings of the International Workshop on Geo-Omics of Archaea. Front Microbiol 2022; 12:827229. [PMID: 35126338 PMCID: PMC8816317 DOI: 10.3389/fmicb.2021.827229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 12/21/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Brian P. Hedlund
- School of Life Sciences, University of Nevada, Las Vegas, NV, United States
- Nevada Institute of Personalized Medicine, University of Nevada, Las Vegas, NV, United States
| | - Chuanlun Zhang
- Shenzhen Key Laboratory of Marine Archaea Geo-Omics, Southern University of Science and Technology, Shenzhen, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
| | - Fengping Wang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
- School of Oceanography, Shanghai JiaoTong University, Shanghai, China
| | - Christian Rinke
- Australian Centre for Ecogenomics, School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD, Australia
| | - William F. Martin
- Institute for Molecular Evolution, University of Dusseldorf Medical School, Düsseldorf, Germany
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40
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Kiaghadi A, Rifai HS, Crum M, Willson RC. Longitudinal patterns in sediment type and quality during daily flow regimes and following natural hazards in an urban estuary: a Hurricane Harvey retrospective. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:7514-7531. [PMID: 34476713 DOI: 10.1007/s11356-021-15912-0] [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: 01/01/2021] [Accepted: 08/06/2021] [Indexed: 06/13/2023]
Abstract
Understanding the transport of sediments in urban estuaries and their effects on water quality and microorganisms is a convergent challenge that has yet to be addressed especially as a result of natural hazards that affect the hydrodynamics of estuarine systems. This study provides a holistic view of the longitudinal nature and character of sediment in an urban estuary, the Galveston Bay Estuary System (GBES), under daily and extreme flow regimes and presents the results of water and sediment sampling after Hurricane Harvey. The sediment sampling quantified total suspended sediment (TSS) concentrations, metal concentrations, and the diversity of microbial communities. The results revealed the impact of the substantial sediment loads that were transported into the GBES in terms of sediment grain type, the spatial distribution of trace metals, and the diversity of microbial communities. A measurable shift in the percentage of silt relative to historical norms was noted in the GBES after Hurricane Harvey. Not only did sediment metal data confirms this shift and its ensuing impact on metal concentrations; microbial data provided ample evidence of the effect of leaks and spills from wastewater treatment plants, superfund sites, and industrial runoff on microbial diversity. The research demonstrates the importance of understanding longitudinal sediment transport and deposition in estuarine systems under daily flow regimes but more critically, following natural hazard events to ensure sustainability and resilience of systems such as the GBES that encounter numerous acute and chronic stresses.
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Affiliation(s)
- Amin Kiaghadi
- Civil and Environmental Engineering, University of Houston, Room N138, Engineering Building 1, 4726 Calhoun, Houston, TX, 77204-4003, USA
| | - Hanadi S Rifai
- Civil and Environmental Engineering, University of Houston, Room N138, Engineering Building 1, 4726 Calhoun, Houston, TX, 77204-4003, USA.
| | - Mary Crum
- Chemical and Biomolecular Engineering, University of Houston, Room S222, Engineering Building 1, 4726 Calhoun, Houston, TX, 77204-4004, USA
| | - Richard C Willson
- Chemical and Biomolecular Engineering, University of Houston, Room S222, Engineering Building 1, 4726 Calhoun, Houston, TX, 77204-4004, USA
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Garber AI, Zehnpfennig JR, Sheik CS, Henson MW, Ramírez GA, Mahon AR, Halanych KM, Learman DR. Metagenomics of Antarctic Marine Sediment Reveals Potential for Diverse Chemolithoautotrophy. mSphere 2021; 6:e0077021. [PMID: 34817234 PMCID: PMC8612310 DOI: 10.1128/msphere.00770-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 11/10/2021] [Indexed: 11/30/2022] Open
Abstract
The microbial biogeochemical processes occurring in marine sediment in Antarctica remain underexplored due to limited access. Further, these polar habitats are unique, as they are being exposed to significant changes in their climate. To explore how microbes drive biogeochemistry in these sediments, we performed a shotgun metagenomic survey of marine surficial sediment (0 to 3 cm of the seafloor) collected from 13 locations in western Antarctica and assembled 16 high-quality metagenome assembled genomes for focused interrogation of the lifestyles of some abundant lineages. We observe an abundance of genes from pathways for the utilization of reduced carbon, sulfur, and nitrogen sources. Although organotrophy is pervasive, nitrification and sulfide oxidation are the dominant lithotrophic pathways and likely fuel carbon fixation via the reverse tricarboxylic acid and Calvin cycles. Oxygen-dependent terminal oxidases are common, and genes for reduction of oxidized nitrogen are sporadically present in our samples. Our results suggest that the underlying benthic communities are well primed for the utilization of settling organic matter, which is consistent with findings from highly productive surface water. Despite the genetic potential for nitrate reduction, the net catabolic pathway in our samples remains aerobic respiration, likely coupled to the oxidation of sulfur and nitrogen imported from the highly productive Antarctic water column above. IMPORTANCE The impacts of climate change in polar regions, like Antarctica, have the potential to alter numerous ecosystems and biogeochemical cycles. Increasing temperature and freshwater runoff from melting ice can have profound impacts on the cycling of organic and inorganic nutrients between the pelagic and benthic ecosystems. Within the benthos, sediment microbial communities play a critical role in carbon mineralization and the cycles of essential nutrients like nitrogen and sulfur. Metagenomic data collected from sediment samples from the continental shelf of western Antarctica help to examine this unique system and document the metagenomic potential for lithotrophic metabolisms and the cycles of both nitrogen and sulfur, which support not only benthic microbes but also life in the pelagic zone.
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Affiliation(s)
- Arkadiy I. Garber
- Biodesign Center for Mechanisms for Evolution, Arizona State University, Tempe, Arizona, USA
| | | | - Cody S. Sheik
- Biology Department and Large Lakes Observatory, University of Minnesota Duluth, Duluth, Minnesota, USA
| | - Michael W. Henson
- Department of Biology, Central Michigan University, Mt. Pleasant, Michigan, USA
| | - Gustavo A. Ramírez
- College of Veterinary Medicine, Western University of Health Sciences, Pomona, California, USA
- Department of Marine Biology, Haifa University, Haifa, Israel
| | - Andrew R. Mahon
- Department of Biology, Central Michigan University, Mt. Pleasant, Michigan, USA
| | - Kenneth M. Halanych
- Center for Marine Science, University of North Carolina Wilmington, Wilmington, North Carolina, USA
| | - Deric R. Learman
- Department of Biology, Central Michigan University, Mt. Pleasant, Michigan, USA
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DeCastro ME, Escuder-Rodríguez JJ, Becerra M, Rodríguez-Belmonte E, González-Siso MI. Comparative Metagenomic Analysis of Two Hot Springs From Ourense (Northwestern Spain) and Others Worldwide. Front Microbiol 2021; 12:769065. [PMID: 34899652 PMCID: PMC8661477 DOI: 10.3389/fmicb.2021.769065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 10/26/2021] [Indexed: 01/12/2023] Open
Abstract
With their circumneutral pH and their moderate temperature (66 and 68°C, respectively), As Burgas and Muiño da Veiga are two important human-use hot springs, previously studied with traditional culture methods, but never explored with a metagenomic approach. In the present study, we have performed metagenomic sequence-based analyses to compare the taxonomic composition and functional potential of these hot springs. Proteobacteria, Deinococcus-Thermus, Firmicutes, Nitrospirae, and Aquificae are the dominant phyla in both geothermal springs, but there is a significant difference in the abundance of these phyla between As Burgas and Muiño da Veiga. Phylum Proteobacteria dominates As Burgas ecosystem while Aquificae is the most abundant phylum in Muiño da Veiga. Taxonomic and functional analyses reveal that the variability in water geochemistry might be shaping the differences in the microbial communities inhabiting these geothermal springs. The content in organic compounds of As Burgas water promotes the presence of heterotrophic populations of the genera Acidovorax and Thermus, whereas the sulfate-rich water of Muiño da Veiga favors the co-dominance of genera Sulfurihydrogenibium and Thermodesulfovibrio. Differences in ammonia concentration exert a selective pressure toward the growth of nitrogen-fixing bacteria such as Thermodesulfovibrio in Muiño da Veiga. Temperature and pH are two important factors shaping hot springs microbial communities as was determined by comparative analysis with other thermal springs.
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Affiliation(s)
| | | | | | | | - María-Isabel González-Siso
- Grupo EXPRELA, Centro de Investigacións Científicas Avanzadas (CICA), Departamento de Bioloxía, Facultade de Ciencias, Universidade da Coruña, A Coruña, Spain
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43
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Fadeev E, Rogge A, Ramondenc S, Nöthig EM, Wekerle C, Bienhold C, Salter I, Waite AM, Hehemann L, Boetius A, Iversen MH. Sea ice presence is linked to higher carbon export and vertical microbial connectivity in the Eurasian Arctic Ocean. Commun Biol 2021; 4:1255. [PMID: 34732822 PMCID: PMC8566512 DOI: 10.1038/s42003-021-02776-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 10/09/2021] [Indexed: 01/04/2023] Open
Abstract
Arctic Ocean sea ice cover is shrinking due to warming. Long-term sediment trap data shows higher export efficiency of particulate organic carbon in regions with seasonal sea ice compared to regions without sea ice. To investigate this sea-ice enhanced export, we compared how different early summer phytoplankton communities in seasonally ice-free and ice-covered regions of the Fram Strait affect carbon export and vertical dispersal of microbes. In situ collected aggregates revealed two-fold higher carbon export of diatom-rich aggregates in ice-covered regions, compared to Phaeocystis aggregates in the ice-free region. Using microbial source tracking, we found that ice-covered regions were also associated with more surface-born microbial clades exported to the deep sea. Taken together, our results showed that ice-covered regions are responsible for high export efficiency and provide strong vertical microbial connectivity. Therefore, continuous sea-ice loss may decrease the vertical export efficiency, and thus the pelagic-benthic coupling, with potential repercussions for Arctic deep-sea ecosystems.
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Affiliation(s)
- Eduard Fadeev
- grid.10894.340000 0001 1033 7684Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, D-27570 Bremerhaven, Germany ,grid.419529.20000 0004 0491 3210Max Planck Institute for Marine Microbiology, D-28359 Bremen, Germany ,grid.10420.370000 0001 2286 1424Present Address: Department of Functional and Evolutionary Ecology, University of Vienna, A-1090 Vienna, Austria
| | - Andreas Rogge
- grid.10894.340000 0001 1033 7684Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, D-27570 Bremerhaven, Germany ,grid.9764.c0000 0001 2153 9986Institute for Ecosystem Research, Kiel University, D-24118 Kiel, Germany
| | - Simon Ramondenc
- grid.10894.340000 0001 1033 7684Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, D-27570 Bremerhaven, Germany
| | - Eva-Maria Nöthig
- grid.10894.340000 0001 1033 7684Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, D-27570 Bremerhaven, Germany
| | - Claudia Wekerle
- grid.10894.340000 0001 1033 7684Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, D-27570 Bremerhaven, Germany
| | - Christina Bienhold
- grid.10894.340000 0001 1033 7684Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, D-27570 Bremerhaven, Germany ,grid.419529.20000 0004 0491 3210Max Planck Institute for Marine Microbiology, D-28359 Bremen, Germany
| | - Ian Salter
- grid.10894.340000 0001 1033 7684Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, D-27570 Bremerhaven, Germany ,grid.424612.7Faroe Marine Research Institute, FO 100 Tórshavn, Faroe Islands
| | - Anya M. Waite
- grid.10894.340000 0001 1033 7684Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, D-27570 Bremerhaven, Germany ,Ocean Frontier Institute, NS, B3H 4R2 Halifax, Canada
| | - Laura Hehemann
- grid.10894.340000 0001 1033 7684Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, D-27570 Bremerhaven, Germany
| | - Antje Boetius
- grid.10894.340000 0001 1033 7684Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, D-27570 Bremerhaven, Germany ,grid.419529.20000 0004 0491 3210Max Planck Institute for Marine Microbiology, D-28359 Bremen, Germany ,grid.7704.40000 0001 2297 4381MARUM and University of Bremen, D-28359 Bremen, Germany
| | - Morten H. Iversen
- grid.10894.340000 0001 1033 7684Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, D-27570 Bremerhaven, Germany ,grid.7704.40000 0001 2297 4381MARUM and University of Bremen, D-28359 Bremen, Germany
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Kerou M, Ponce-Toledo RI, Zhao R, Abby SS, Hirai M, Nomaki H, Takaki Y, Nunoura T, Jørgensen SL, Schleper C. Genomes of Thaumarchaeota from deep sea sediments reveal specific adaptations of three independently evolved lineages. THE ISME JOURNAL 2021; 15:2792-2808. [PMID: 33795828 PMCID: PMC8397731 DOI: 10.1038/s41396-021-00962-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 01/12/2021] [Accepted: 03/11/2021] [Indexed: 02/01/2023]
Abstract
Marine sediments represent a vast habitat for complex microbiomes. Among these, ammonia oxidizing archaea (AOA) of the phylum Thaumarchaeota are one of the most common, yet little explored, inhabitants, which seem extraordinarily well adapted to the harsh conditions of the subsurface biosphere. We present 11 metagenome-assembled genomes of the most abundant AOA clades from sediment cores obtained from the Atlantic Mid-Ocean ridge flanks and Pacific abyssal plains. Their phylogenomic placement reveals three independently evolved clades within the order Nitrosopumilales, of which no cultured representative is known yet. In addition to the gene sets for ammonia oxidation and carbon fixation known from other AOA, all genomes encode an extended capacity for the conversion of fermentation products that can be channeled into the central carbon metabolism, as well as uptake of amino acids probably for protein maintenance or as an ammonia source. Two lineages encode an additional (V-type) ATPase and a large repertoire of DNA repair systems that may allow to overcome the challenges of high hydrostatic pressure. We suggest that the adaptive radiation of AOA into marine sediments occurred more than once in evolution and resulted in three distinct lineages with particular adaptations to this extremely energy-limiting and high-pressure environment.
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Affiliation(s)
- Melina Kerou
- grid.10420.370000 0001 2286 1424Department of Functional and Evolutionary Ecology, Archaea Biology and Ecogenomics Unit, University of Vienna, Vienna, Austria
| | - Rafael I. Ponce-Toledo
- grid.10420.370000 0001 2286 1424Department of Functional and Evolutionary Ecology, Archaea Biology and Ecogenomics Unit, University of Vienna, Vienna, Austria
| | - Rui Zhao
- grid.7914.b0000 0004 1936 7443Department of Earth Science, K.G. Jebsen Centre for Deep Sea Research, University of Bergen, Bergen, Norway ,grid.33489.350000 0001 0454 4791Present Address: School of Marine Science and Policy, University of Delaware, Lewes, DE USA
| | - Sophie S. Abby
- grid.10420.370000 0001 2286 1424Department of Functional and Evolutionary Ecology, Archaea Biology and Ecogenomics Unit, University of Vienna, Vienna, Austria ,grid.463716.10000 0004 4687 1979Present Address: University Grenoble Alpes, CNRS, Grenoble INP, TIMC-IMAG, Grenoble, France
| | - Miho Hirai
- grid.410588.00000 0001 2191 0132Super-cutting-edge Grand and Advanced Research (SUGAR) Program, X-star, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
| | - Hidetaka Nomaki
- grid.410588.00000 0001 2191 0132Super-cutting-edge Grand and Advanced Research (SUGAR) Program, X-star, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
| | - Yoshihiro Takaki
- grid.410588.00000 0001 2191 0132Super-cutting-edge Grand and Advanced Research (SUGAR) Program, X-star, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
| | - Takuro Nunoura
- grid.410588.00000 0001 2191 0132Research Center for Bioscience and Nanoscience (CeBN), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
| | - Steffen L. Jørgensen
- grid.7914.b0000 0004 1936 7443Department of Earth Science, K.G. Jebsen Centre for Deep Sea Research, University of Bergen, Bergen, Norway
| | - Christa Schleper
- grid.10420.370000 0001 2286 1424Department of Functional and Evolutionary Ecology, Archaea Biology and Ecogenomics Unit, University of Vienna, Vienna, Austria
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Mohapatra M, Yadav R, Rajput V, Dharne MS, Rastogi G. Metagenomic analysis reveals genetic insights on biogeochemical cycling, xenobiotic degradation, and stress resistance in mudflat microbiome. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 292:112738. [PMID: 34020306 DOI: 10.1016/j.jenvman.2021.112738] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 04/05/2021] [Accepted: 04/29/2021] [Indexed: 05/22/2023]
Abstract
Mudflats are highly productive coastal ecosystems that are dominated by halophytic vegetation. In this study, the mudflat sediment microbiome was investigated from Nalabana Island, located in a brackish water coastal wetland of India; Chilika, based on the MinION shotgun metagenomic analysis. Bacterial, archaeal, and fungal communities were mostly composed of Proteobacteria (38.3%), Actinobacteria (20.7%), Euryarchaeota (76.1%), Candidatus Bathyarchaeota (6.8%), Ascomycota (47.2%), and Basidiomycota (22.0%). Bacterial and archaeal community composition differed significantly between vegetated mudflat and un-vegetated bulk sediments. Carbon, nitrogen, sulfur metabolisms, oxidative phosphorylation, and xenobiotic biodegradation were the most common microbial functionalities in the mudflat metagenomes. Furthermore, genes involved in oxidative stresses, osmotolerance, secondary metabolite synthesis, and extracellular polymeric substance synthesis revealed adaptive mechanisms of the microbiome in mudflat habitat. Mudflat metagenome also revealed genes involved in the plant growth and development, suggesting that microbial communities could aid halophytic vegetation by providing tolerance to the abiotic stresses in a harsh mudflat environment. Canonical correspondence analysis and co-occurrence network revealed that both biotic (vegetation and microbial interactions) and abiotic factors played important role in shaping the mudflat microbiome composition. Among abiotic factors, pH accounted for the highest variance (20.10%) followed by available phosphorus (19.73%), total organic carbon (9.94%), salinity (8.28%), sediment texture (sand) (6.37%) and available nitrogen (5.53%) in the mudflat microbial communities. Overall, this first metagenomic study provided a comprehensive insight on the community structure, potential ecological interactions, and genetic potential of the mudflat microbiome in context to the cycling of organic matter, xenobiotic biodegradation, stress resistance, and in providing the ecological fitness to halophytes. These ecosystem services of the mudflat microbiome must be considered in the conservation and management plan of coastal wetlands. This study also advanced our understanding of fungal diversity which is understudied from the coastal lagoon ecosystems.
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Affiliation(s)
- Madhusmita Mohapatra
- Wetland Research and Training Centre, Chilika Development Authority, Balugaon, 752030, Odisha, India; School of Biotechnology, KIIT University, Bhubaneswar, Odisha, 751024, India
| | - Rakeshkumar Yadav
- National Collection of Industrial Microorganisms (NCIM), Biochemical Sciences, CSIR-National Chemical Laboratory (NCL), Pune, 411008, India; Academic of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Vinay Rajput
- National Collection of Industrial Microorganisms (NCIM), Biochemical Sciences, CSIR-National Chemical Laboratory (NCL), Pune, 411008, India
| | - Mahesh S Dharne
- National Collection of Industrial Microorganisms (NCIM), Biochemical Sciences, CSIR-National Chemical Laboratory (NCL), Pune, 411008, India; Academic of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Gurdeep Rastogi
- Wetland Research and Training Centre, Chilika Development Authority, Balugaon, 752030, Odisha, India.
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Ammonia-oxidizing archaea possess a wide range of cellular ammonia affinities. ISME JOURNAL 2021; 16:272-283. [PMID: 34316016 PMCID: PMC8692354 DOI: 10.1038/s41396-021-01064-z] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 07/01/2021] [Accepted: 07/07/2021] [Indexed: 02/04/2023]
Abstract
Nitrification, the oxidation of ammonia to nitrate, is an essential process in the biogeochemical nitrogen cycle. The first step of nitrification, ammonia oxidation, is performed by three, often co-occurring guilds of chemolithoautotrophs: ammonia-oxidizing bacteria (AOB), archaea (AOA), and complete ammonia oxidizers (comammox). Substrate kinetics are considered to be a major niche-differentiating factor between these guilds, but few AOA strains have been kinetically characterized. Here, the ammonia oxidation kinetic properties of 12 AOA representing all major cultivated phylogenetic lineages were determined using microrespirometry. Members of the genus Nitrosocosmicus have the lowest affinity for both ammonia and total ammonium of any characterized AOA, and these values are similar to previously determined ammonia and total ammonium affinities of AOB. This contrasts previous assumptions that all AOA possess much higher substrate affinities than their comammox or AOB counterparts. The substrate affinity of ammonia oxidizers correlated with their cell surface area to volume ratios. In addition, kinetic measurements across a range of pH values supports the hypothesis that—like for AOB—ammonia and not ammonium is the substrate for the ammonia monooxygenase enzyme of AOA and comammox. Together, these data will facilitate predictions and interpretation of ammonia oxidizer community structures and provide a robust basis for establishing testable hypotheses on competition between AOB, AOA, and comammox.
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Mghazli N, Sbabou L, Hakkou R, Ouhammou A, El Adnani M, Bruneel O. Description of Microbial Communities of Phosphate Mine Wastes in Morocco, a Semi-Arid Climate, Using High-Throughput Sequencing and Functional Prediction. Front Microbiol 2021; 12:666936. [PMID: 34305834 PMCID: PMC8297565 DOI: 10.3389/fmicb.2021.666936] [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: 02/11/2021] [Accepted: 06/07/2021] [Indexed: 11/13/2022] Open
Abstract
Soil microbiota are vital for successful revegetation, as they play a critical role in nutrient cycles, soil functions, and plant growth and health. A rehabilitation scenario of the abandoned Kettara mine (Morocco) includes covering acidic tailings with alkaline phosphate mine wastes to limit water infiltration and hence acid mine drainage. Revegetation of phosphate wastes is the final step to this rehabilitation plan. However, revegetation is hard on this type of waste in semi-arid areas and only a few plants managed to grow naturally after 5 years on the store-and-release cover. As we know that belowground biodiversity is a key component for aboveground functioning, we sought to know if any structural problem in phosphate waste communities could explain the almost absence of plants. To test this hypothesis, bacterial and archaeal communities present in these wastes were assessed by 16S rRNA metabarcoding. Exploration of taxonomic composition revealed a quite diversified community assigned to 19 Bacterial and two Archaeal phyla, similar to other studies, that do not appear to raise any particular issues of structural problems. The dominant sequences belonged to Proteobacteria, Bacteroidetes, Actinobacteria, and Gemmatimonadetes and to the genera Massilia, Sphingomonas, and Adhaeribacter. LEfSe analysis identified 19 key genera, and metagenomic functional prediction revealed a broader phylogenetic range of taxa than expected, with all identified genera possessing at least one plant growth-promoting trait. Around 47% of the sequences were also related to genera possessing strains that facilitate plant development under biotic and environmental stress conditions, such as drought and heat.
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Affiliation(s)
- Najoua Mghazli
- Center of Research Plants and Microbial Biotechnologies, Biodiversity and Environment, Team of Microbiology and Molecular Biology, Faculty of Sciences, Mohammed V University in Rabat, Rabat, Morocco
- HydroSciences Montpellier, University of Montpellier, CNRS, IRD, Montpellier, France
| | - Laila Sbabou
- Center of Research Plants and Microbial Biotechnologies, Biodiversity and Environment, Team of Microbiology and Molecular Biology, Faculty of Sciences, Mohammed V University in Rabat, Rabat, Morocco
| | - Rachid Hakkou
- IMED_Laboratory, Faculty of Science and Technology, Cadi Ayyad University (UCA), Marrakech, Morocco
- Mining Environment and Circular Economy Program, Mohammed VI Polytechnic University (UM6P), Benguerir, Morocco
| | - Ahmed Ouhammou
- Laboratory of Microbial Biotechnologies, Agrosciences and Environment (BioMAgE), Team of Agrosciences, PhytoBiodiversity and Environment, Regional Herbarium ‘MARK’, Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, Morocco
| | - Mariam El Adnani
- Resources Valorisation, Environment and Sustainable Development Laboratory, National School of Mines of Rabat, Mohammed V University in Rabat, Rabat, Morocco
| | - Odile Bruneel
- HydroSciences Montpellier, University of Montpellier, CNRS, IRD, Montpellier, France
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Changes in soil ammonia oxidizers and potential nitrification after clear-cutting of boreal forests in China. World J Microbiol Biotechnol 2021; 37:126. [PMID: 34180026 DOI: 10.1007/s11274-021-03087-2] [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: 01/18/2021] [Accepted: 06/02/2021] [Indexed: 10/21/2022]
Abstract
The Korean pine and broad-leaved mixed forests are the most typical and complete ecosystem among the global boreal forests, with extremely important ecological functions. However, few studies on the changes of soil ammonia oxidizers and potential nitrification after clear-cutting of forests are reported. In this study, in contrast to primary Korean pine forests, nitrate (NO3-) was significantly higher in secondary broad-leaved forests, while ammonium (NH4+) was on the contrary. The abundance of ammonia-oxidizing bacteria (AOB) was greatly higher in secondary broad-leaved forests, while levels of ammonia-oxidizing archaea (AOA) were not significantly different between them. The significant differences of community structure of AOA and AOB were observed in different forest types and soil layers. Compared with AOA, community compositions of AOB was more sensitive to forest type. The dominant groups of AOA were Nitrososphaera and Nitrosotalea, and the dominant group of AOB was Nitrosospira, of which Nitrosospira cluster 2 and 4 were functional groups with highly activity. Soil potential nitrification rate (PNR) was higher in secondary broad-leaved forests. Furthermore, PNR and AOB abundance had a significant positive correlation, but no significant correlation with AOA abundance. These results provide insights into the soil nitrogen balance and effects on forest restoration after clear-cutting.
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Płaza G, Jałowiecki Ł, Głowacka D, Hubeny J, Harnisz M, Korzeniewska E. Insights into the microbial diversity and structure in a full-scale municipal wastewater treatment plant with particular regard to Archaea. PLoS One 2021; 16:e0250514. [PMID: 33901216 PMCID: PMC8075261 DOI: 10.1371/journal.pone.0250514] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 04/07/2021] [Indexed: 12/02/2022] Open
Abstract
Due to limited description of the role and diversity of archaea in WWTPs, the aim of the study was to analyze microbial community structures and diversities with particular regard to Archaea in the samples taken from different stages of the full-scale municipal wastewater treatment plant and effluent receiving water (upstream and downstream discharge point). Our study was focused on showing how the treatment processes influenced the Eubacteria and Archaea composition. Alpha and Beta diversity were used to evaluate the microbial diversity changes in the collected samples. Proteobacteria was the largest fraction ranging from 28% to 67% with 56% relative abundance across all samples. Archaea were present in all stages of WWTP ranged from 1 to 8%. Among the Archaea, two groups of methanogens, acetoclastic (Methanosarcina, Methanosaeta) and hydrogenotrophic methanogens (Methanospirillium, Methanoculleus, Methanobrevibacter) were dominant in the technological stages. The obtained results indicate that the treated wastewater did not significantly affect eubacterial and archaeal composition in receiving water. However, differences in richness, diversity and microbial composition of Eubacteria and Archaea between the wastewater samples taken from the primary and secondary treatment were observed.
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Affiliation(s)
- Grażyna Płaza
- Environmental Microbiology Unit, Institute for Ecology of Industrial Areas, Katowice, Poland
- * E-mail:
| | - Łukasz Jałowiecki
- Environmental Microbiology Unit, Institute for Ecology of Industrial Areas, Katowice, Poland
| | | | - Jakub Hubeny
- Faculty of Geoengineering, Department of Engineering of Water Protection and Environmental Microbiology, University of Warmia and Mazury Olsztyn, Olsztyn, Poland
| | - Monika Harnisz
- Faculty of Geoengineering, Department of Engineering of Water Protection and Environmental Microbiology, University of Warmia and Mazury Olsztyn, Olsztyn, Poland
| | - Ewa Korzeniewska
- Faculty of Geoengineering, Department of Engineering of Water Protection and Environmental Microbiology, University of Warmia and Mazury Olsztyn, Olsztyn, Poland
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50
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Mueller RC, Peach JT, Skorupa DJ, Copié V, Bothner B, Peyton BM. An emerging view of the diversity, ecology and function of Archaea in alkaline hydrothermal environments. FEMS Microbiol Ecol 2021; 97:6021323. [PMID: 33501490 DOI: 10.1093/femsec/fiaa246] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 12/01/2020] [Indexed: 11/15/2022] Open
Abstract
The described diversity within the domain Archaea has recently expanded due to advances in sequencing technologies, but many habitats that likely harbor novel lineages of archaea remain understudied. Knowledge of archaea within natural and engineered hydrothermal systems, such as hot springs and engineered subsurface habitats, has been steadily increasing, but the majority of the work has focused on archaea living in acidic or circumneutral environments. The environmental pressures exerted by the combination of high temperatures and high pH likely select for divergent communities and distinct metabolic pathways from those observed in acidic or circumneutral systems. In this review, we examine what is currently known about the archaea found in thermoalkaline environments, focusing on the detection of novel lineages and knowledge of the ecology, metabolic pathways and functions of these populations and communities. We also discuss the potential of emerging multi-omics approaches, including proteomics and metabolomics, to enhance our understanding of archaea within extreme thermoalkaline systems.
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Affiliation(s)
- Rebecca C Mueller
- Department of Chemical and Biological Engineering, Montana State University,Bozeman, MT 59717, PO Box 173920, USA.,Thermal Biology Institute, Montana State University, Bozeman, MT 59717, PO Box 173142, USA
| | - Jesse T Peach
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59717, PO Box 173400, USA
| | - Dana J Skorupa
- Department of Chemical and Biological Engineering, Montana State University,Bozeman, MT 59717, PO Box 173920, USA.,Thermal Biology Institute, Montana State University, Bozeman, MT 59717, PO Box 173142, USA
| | - Valerie Copié
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59717, PO Box 173400, USA.,Thermal Biology Institute, Montana State University, Bozeman, MT 59717, PO Box 173142, USA
| | - Brian Bothner
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT 59717, PO Box 173400, USA.,Thermal Biology Institute, Montana State University, Bozeman, MT 59717, PO Box 173142, USA
| | - Brent M Peyton
- Department of Chemical and Biological Engineering, Montana State University,Bozeman, MT 59717, PO Box 173920, USA.,Thermal Biology Institute, Montana State University, Bozeman, MT 59717, PO Box 173142, USA
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