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Chen R, Li T, Huang G, Jia X, Jin Z, Zheng X, Zhao M. Enhancement the wastewater treatment performance of multistage living machine by underwater lamp. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 365:121604. [PMID: 38936021 DOI: 10.1016/j.jenvman.2024.121604] [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: 02/03/2024] [Revised: 06/11/2024] [Accepted: 06/23/2024] [Indexed: 06/29/2024]
Abstract
Source separation and decentralized domestic wastewater treatment represent effective strategies to enhance sewage treatment performance and facilitate water reuse economically. The Living Machine (LM) system has gained widespread adoption for decentralized sewage treatment. While underwater light source has been demonstrated to enhance the treatment performance of open aerobic reactors in LM systems, its influence on the treatment efficiency of a fully multistage LM system remains underreported. In this study, an underwater lamp-added LM system (ULLM) with eight reactors was constructed and investigated. The introduction of underwater light source obviously improved the removal capacity of chemical oxygen demand (COD) and NH4+-N, which was 96.1% and 61.6%, respectively. The diversity of algae, zooplankton, and aquatic animals was notably higher in the light-treated reactors than in the control group (CK) without underwater light source, and substantial alteration in the microbial community of the light-treated reactors was observed compared with CK reactors. At the phylum level, Proteobacteria and Nitrospirae enriched in the underwater light-treated reactors, while Bacteroidetes and Actinobacteria exhibited a decrease after light exposure. At the genus level, Nitrospira and Rhodanobacter were enriched in the ULLM system. Importantly, the prevalence of these two dominant genera was sustained until the final operational stage, indicating their potential key roles in enhancing wastewater treatment performance. The addition of underwater light source proves to be an effective strategy for augmenting the treatment efficiency of the multistage living machine systems, resulting in substantial improvements in pollutant removal. These findings contribute valuable insights into optimizing LM systems for decentralized wastewater treatment.
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Affiliation(s)
- Ruihuan Chen
- School of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, PR China; State & Local Joint Engineering Research Center for Ecological Treatment Technology of Urban Water Pollution, Wenzhou, Zhejiang, 325035, PR China; Zhejiang Provincial Key Lab for Water Environment and Marine Biological Resources Protection, Wenzhou, Zhejiang, 325035, PR China
| | - Tian Li
- School of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, PR China; State & Local Joint Engineering Research Center for Ecological Treatment Technology of Urban Water Pollution, Wenzhou, Zhejiang, 325035, PR China; Zhejiang Provincial Key Lab for Water Environment and Marine Biological Resources Protection, Wenzhou, Zhejiang, 325035, PR China
| | - Guiying Huang
- Taishun Sub-bureau of Wenzhou Ecological Environment Bureau, Wenzhou, Zhejiang, 325500, PR China
| | - Xianle Jia
- Wenzhou Ecological Environment Bureau, Wenzhou, Zhejiang, 325000, PR China
| | - Zhan Jin
- School of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, PR China; State & Local Joint Engineering Research Center for Ecological Treatment Technology of Urban Water Pollution, Wenzhou, Zhejiang, 325035, PR China; Zhejiang Provincial Key Lab for Water Environment and Marine Biological Resources Protection, Wenzhou, Zhejiang, 325035, PR China
| | - Xiangyong Zheng
- School of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, PR China; State & Local Joint Engineering Research Center for Ecological Treatment Technology of Urban Water Pollution, Wenzhou, Zhejiang, 325035, PR China; Zhejiang Provincial Key Lab for Water Environment and Marine Biological Resources Protection, Wenzhou, Zhejiang, 325035, PR China.
| | - Min Zhao
- School of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, PR China; State & Local Joint Engineering Research Center for Ecological Treatment Technology of Urban Water Pollution, Wenzhou, Zhejiang, 325035, PR China; Zhejiang Provincial Key Lab for Water Environment and Marine Biological Resources Protection, Wenzhou, Zhejiang, 325035, PR China.
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Underwood JC, Hall NC, Mumford AC, Harvey RW, Bliznik PA, Jeanis KM. Relation between the relative abundance and collapse of Aphanizomenon flos-aquae and microbial antagonism in Upper Klamath Lake, Oregon. FEMS Microbiol Ecol 2024; 100:fiae043. [PMID: 38533659 PMCID: PMC11022654 DOI: 10.1093/femsec/fiae043] [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: 10/06/2023] [Revised: 03/04/2024] [Accepted: 03/25/2024] [Indexed: 03/28/2024] Open
Abstract
Aphanizomenon flos-aquae (AFA) is the dominant filamentous cyanobacterium that develops into blooms in Upper Klamath Lake, Oregon, each year. During AFA bloom and collapse, ecosystem conditions for endangered Lost River and shortnose suckers deteriorate, thus motivating the need to identify processes that limit AFA abundance and decline. Here, we investigate the relations between AFA and other members of the microbial community (photosynthetic and nonphotosynthetic bacteria and archaea), how those relations impact abundance and collapse of AFA, and the types of microbial conditions that suppress AFA. We found significant spatial variation in AFA relative abundance during the 2016 bloom period using 16S rRNA sequencing. The Pelican Marina site had the lowest AFA relative abundance, and this was coincident with increased relative abundance of Candidatus Sericytochromatia, Flavobacterium, and Rheinheimera, some of which are known AFA antagonists. The AFA collapse coincided with phosphorus limitation relative to nitrogen and the increased relative abundance of Cyanobium and Candidatus Sericytochromatia, which outcompete AFA when dissolved inorganic nitrogen is available. The data collected in this study indicate the importance of dissolved inorganic nitrogen combined with microbial community structure in suppressing AFA abundance.
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Affiliation(s)
- Jennifer C Underwood
- U.S. Geological Survey, Water Mission Area, 3215 Marine Street, Boulder, CO 80303, United States
| | - Natalie C Hall
- U.S. Geological Survey, Maryland–Delaware–D.C. Water Science Center, 5522 Research Park Dr, Catonsville, MD 21228, United States
| | - Adam C Mumford
- U.S. Geological Survey, Maryland–Delaware–D.C. Water Science Center, 5522 Research Park Dr, Catonsville, MD 21228, United States
| | - Ronald W Harvey
- U.S. Geological Survey, Water Mission Area, 3215 Marine Street, Boulder, CO 80303, United States
| | - Paul A Bliznik
- U.S. Geological Survey, Water Mission Area, 3215 Marine Street, Boulder, CO 80303, United States
| | - Kaitlyn M Jeanis
- U.S. Geological Survey, Water Mission Area, 3215 Marine Street, Boulder, CO 80303, United States
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Akter S, Wos-Oxley ML, Catalano SR, Hassan MM, Li X, Qin JG, Oxley AP. Host Species and Environment Shape the Gut Microbiota of Cohabiting Marine Bivalves. MICROBIAL ECOLOGY 2023; 86:1755-1772. [PMID: 36811710 PMCID: PMC10497454 DOI: 10.1007/s00248-023-02192-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Pacific oysters (Crassostrea gigas) and Mediterranean mussels (Mytilus galloprovincialis) are commercially important marine bivalves that frequently coexist and have overlapping feeding ecologies. Like other invertebrates, their gut microbiota is thought to play an important role in supporting their health and nutrition. Yet, little is known regarding the role of the host and environment in driving these communities. Here, bacterial assemblages were surveyed from seawater and gut aspirates of farmed C. gigas and co-occurring wild M. galloprovincialis in summer and winter using Illumina 16S rRNA gene sequencing. Unlike seawater, which was dominated by Pseudomonadata, bivalve samples largely consisted of Mycoplasmatota (Mollicutes) and accounted for >50% of the total OTU abundance. Despite large numbers of common (core) bacterial taxa, bivalve-specific species (OTUs) were also evident and predominantly associated with Mycoplasmataceae (notably Mycoplasma). An increase in diversity (though with varied taxonomic evenness) was observed in winter for both bivalves and was associated with changes in the abundance of core and bivalve-specific taxa, including several representing host-associated and environmental (free-living or particle-diet associated) organisms. Our findings highlight the contribution of the environment and the host in defining the composition of the gut microbiota in cohabiting, intergeneric bivalve populations.
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Affiliation(s)
- Shirin Akter
- College of Science and Engineering, Flinders University, Adelaide, SA, Australia
| | | | - Sarah R Catalano
- Aquatic Sciences Centre, South Australian Research and Development Institute, West Beach, SA, Australia
| | - Md Mahbubul Hassan
- Aquaculture Research and Development, Department of Primary Industries and Regional Development, Hillarys, WA, Australia
| | - Xiaoxu Li
- Aquatic Sciences Centre, South Australian Research and Development Institute, West Beach, SA, Australia
| | - Jian G Qin
- College of Science and Engineering, Flinders University, Adelaide, SA, Australia
| | - Andrew Pa Oxley
- School of Life and Environmental Sciences, Deakin University, Geelong, VIC, Australia.
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Rizzo PF, Young BJ, Pin Viso N, Carbajal J, Martínez LE, Riera NI, Bres PA, Beily ME, Barbaro L, Farber M, Zubillaga MS, Crespo DC. Integral approach for the evaluation of poultry manure, compost, and digestate: Amendment characterization, mineralization, and effects on soil and intensive crops. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 139:124-135. [PMID: 34968898 DOI: 10.1016/j.wasman.2021.12.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 12/06/2021] [Accepted: 12/08/2021] [Indexed: 06/14/2023]
Abstract
The egg industry has increased its production worldwide during the last decades. Several waste management strategies have been proposed to treat large volumes of poultry manure. Composting and anaerobic digestion are the main stabilization processes used. However, there are disagreements on the criteria for applying raw and treated poultry manure to the soil. We studied the relationship between physicochemical, toxicological, microbiological, parasitological, and metabarcoding parameters of raw and treated poultry manure (compost and digestate). Subsequently, we evaluated the mineralization of C, N and P, and the effects of amended soil on horticultural and ornamental crops. Compost and digestate presented better general conditions than poultry manure for use as organic soil amendments. The highest pathogenic microorganism content (total and fecal coliforms, Escherichia coli, and Salmonella spp.) was recorded for poultry manure. Multivariate analyses allowed associating a lower phytotoxicity with compost and a higher microbial diversity with digestate. Therefore, only compost presented stability and maturity conditions. We found high released CO2-C, N loss, and P accumulation in soil amended with a high dose of poultry manure during mineralization. However, high doses of poultry manure and digestate increased the biomass production in the valorization assay. We recommend the soil application of stabilized and mature poultry manure-derived amendments, which reduce the negative impacts on the environment and promote more sustainable practices in agricultural systems.
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Affiliation(s)
- Pedro Federico Rizzo
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Microbiología y Zoología Agrícola (IMyZA), Laboratorio de Transformación de Residuos, Las Cabañas y Los Reseros s/n, 1686, Hurlingham, Buenos Aires, Argentina.
| | - Brian Jonathan Young
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Microbiología y Zoología Agrícola (IMyZA), Laboratorio de Transformación de Residuos, Las Cabañas y Los Reseros s/n, 1686, Hurlingham, Buenos Aires, Argentina.
| | - Natalia Pin Viso
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Agrobiotecnología y Biología Molecular (IABiMo), Las Cabañas y Los Reseros s/n, 1686, Hurlingham, Buenos Aires, Argentina.
| | - Jazmín Carbajal
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Microbiología y Zoología Agrícola (IMyZA), Laboratorio de Transformación de Residuos, Las Cabañas y Los Reseros s/n, 1686, Hurlingham, Buenos Aires, Argentina.
| | - Laura Elizabeth Martínez
- Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Mendoza, San Martin 3853, M5534, Luján de Cuyo, Mendoza, Argentina.
| | - Nicolás Iván Riera
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Microbiología y Zoología Agrícola (IMyZA), Laboratorio de Transformación de Residuos, Las Cabañas y Los Reseros s/n, 1686, Hurlingham, Buenos Aires, Argentina.
| | - Patricia Alina Bres
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Microbiología y Zoología Agrícola (IMyZA), Laboratorio de Transformación de Residuos, Las Cabañas y Los Reseros s/n, 1686, Hurlingham, Buenos Aires, Argentina.
| | - María Eugenia Beily
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Microbiología y Zoología Agrícola (IMyZA), Laboratorio de Transformación de Residuos, Las Cabañas y Los Reseros s/n, 1686, Hurlingham, Buenos Aires, Argentina.
| | - Lorena Barbaro
- Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Cerro Azul, Ruta Nacional 14. Km. 836, 3313, Cerro Azul, Misiones, Argentina.
| | - Marisa Farber
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Agrobiotecnología y Biología Molecular (IABiMo), Las Cabañas y Los Reseros s/n, 1686, Hurlingham, Buenos Aires, Argentina.
| | - Marta Susana Zubillaga
- Cátedra de Fertilidad y Fertilizantes, Departamento de Ingeniería Agrícola y Uso de la Tierra, Facultad de Agronomía, Universidad de Buenos Aires (UBA), Av. San Martín 4453, C1417DSE Buenos Aires, Argentina.
| | - Diana Cristina Crespo
- Instituto Nacional de Tecnología Agropecuaria (INTA), Instituto de Microbiología y Zoología Agrícola (IMyZA), Laboratorio de Transformación de Residuos, Las Cabañas y Los Reseros s/n, 1686, Hurlingham, Buenos Aires, Argentina.
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Wang L, Liu C, Wei B, Song C, Cai F, Liu G, Chen C. Effects of different microbial pretreatments on the anaerobic digestion of giant grass under anaerobic and microaerobic conditions. BIORESOURCE TECHNOLOGY 2021; 337:125456. [PMID: 34320740 DOI: 10.1016/j.biortech.2021.125456] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/16/2021] [Accepted: 06/20/2021] [Indexed: 06/13/2023]
Abstract
Microbial pretreatment to lignocellulosic biomass for anaerobic digestion (AD) has achieved increased attention; however, the low efficiency and unclear mechanism of oxygen parameter affecting this process performance limit its practical application. In this study, five readily available microbial consortia were developed to analyze the influences of various oxygen concentrations during pretreatment process upon methane conversion efficiency and microbiota within AD of giant grass. Results found that anaerobic pretreatment by liquid or straw composting inoculant, along with microaerobic pretreatment by cow manure at 10 mL/g VS oxygen concentration, obtained 23.1%, 24.4%, and 16.0% higher methane yields (275.3, 279.8, and 265.3 mL/g VS) than corresponding untreated group, respectively. Microbial community analyses showed that microbial responses to oxygen varied significantly with microbial consortium, which consequently caused different AD performances. The findings will enrich theoretical knowledge of microbial pretreatment and provide a technological guidance for efficient utilization of giant grass and other lignocellulosic biomasses.
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Affiliation(s)
- Ligong Wang
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Caiyan Liu
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Baocheng Wei
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Chao Song
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Fanfan Cai
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Guangqing Liu
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Chang Chen
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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Nguyen TT, Paulsen JE, Landfald B. Seafloor deposition of water-based drill cuttings generates distinctive and lengthy sediment bacterial community changes. MARINE POLLUTION BULLETIN 2021; 164:111987. [PMID: 33515825 DOI: 10.1016/j.marpolbul.2021.111987] [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: 08/17/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 06/12/2023]
Abstract
The spatial extent and persistence of bacterial change caused by deposition of water-based drill cuttings on the seafloor were explored by a community-wide approach. Ten centimeter sediment cores were sampled along transects extending from ≤15 m to 250 m from three nearby drilling sites in the southern Barents Sea. Eight months, 8 years and 15 years, respectively, had passed since the completion of the drillings. At locations heavily affected by drill cuttings, the two most recent sites showed distinct, corresponding deviances from native Barents Sea bacterial community profiles. Otherwise marginal groups, including Mollicutes and Clostridia, showed significant increases in relative abundance. Beyond 100 m from the boreholes the microbiotas appeared undisturbed, as they did at any distance from the 15-years old borehole. The extent of the biological distortion, as indicated by the present microbial study, agreed with previously published macrofaunal surveys at the same drilling sites.
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Affiliation(s)
- Tan T Nguyen
- Norwegian College of Fishery Science, UiT The Arctic University of Norway, PO Box 6050 Langnes, 9037 Tromsø, Norway.
| | | | - Bjarne Landfald
- Norwegian College of Fishery Science, UiT The Arctic University of Norway, PO Box 6050 Langnes, 9037 Tromsø, Norway.
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Svatos KBW, Abbott LK. Dairy soil bacterial responses to nitrogen application in simulated Italian ryegrass and white clover pasture. J Dairy Sci 2019; 102:9495-9504. [PMID: 31351712 DOI: 10.3168/jds.2018-16107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 06/01/2019] [Indexed: 11/19/2022]
Abstract
Through clearing and use of fertilizer and legumes, areas of southwestern Australia's unique coastal sand plains can support relatively low-cost dairies. However, the ancient, highly weathered nature of the soils in this region makes the dairies susceptible to a range of threats, including nutrient leaching and erosion. Despite this, Western Australian dairy cows typically produce up to 5,500 L of milk per head annually supported by inorganic nitrogen (N) fertilizer (commonly 50:50 urea and ammonium sulfate) at rates up to <320 kg of N/ha per year. Where hotspots exist (up to 2,000 kg of N/ha per year), total N exceeds pasture requirements. We investigated plant and soil bacteria responses to N fertilizer rates consistent with Australian legislated production practices on dairy farms for pure and mixed swards of white clover (Trifolium repens) and Italian ryegrass (Lolium multiflorum) in a long-term pasture experiment in controlled glasshouse conditions. Although the soil bacterial community structure at phylum level was similar for white clover and Italian ryegrass, relative abundances of specific subgroups of bacteria differed among plant species according to the N fertilizer regimen. Marked increases in relative abundance of some bacterial phyla and subphyla indicated potential inhibition of N cycling, especially for N hotspots in soil. Ammonium concentration in soil was less correlated with dominance of some N-cycling bacterial phyla than was nitrate concentration. Changes in bacterial community structure related to altered nutrient cycling highlight the potential for considering this area of research in policy assessment frameworks related to nutrient loads in dairy soils, especially for N.
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Affiliation(s)
- Karl B W Svatos
- UWA School of Agriculture and Environment, The University of Western Australia, Perth 6009, Western Australia, Australia; School of Veterinary and Life Sciences, Murdoch University, Murdoch 6150, Western Australia, Australia; Agriculture and Food Division, Department of Primary Industries and Regional Development, South Perth 6151, Western Australia, Australia.
| | - Lynette K Abbott
- UWA School of Agriculture and Environment, The University of Western Australia, Perth 6009, Western Australia, Australia
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Hellman M, Bonilla-Rosso G, Widerlund A, Juhanson J, Hallin S. External carbon addition for enhancing denitrification modifies bacterial community composition and affects CH 4 and N 2O production in sub-arctic mining pond sediments. WATER RESEARCH 2019; 158:22-33. [PMID: 31009831 DOI: 10.1016/j.watres.2019.04.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 04/04/2019] [Accepted: 04/06/2019] [Indexed: 06/09/2023]
Abstract
Explosives used in mining operations release reactive nitrogen (N) that discharge into surrounding waters. Existing pond systems at mine sites could be used for N removal through denitrification and we investigated capacity in tailings and clarification pond sediments at an iron-ore mine site. Despite differences in microbial community structure in the two ponds, the potential denitrification rates were similar, although carbon limited. Therefore, a microcosm experiment in which we amended sediment from the clarification pond with acetate, cellulose or green algae as possible carbon sources was conducted during 10 weeks under denitrifying conditions. Algae and acetate treatments showed efficient nitrate removal and increased potential denitrification rates, whereas cellulose was not different from the control. Denitrifiers were overall more abundant than bacteria performing dissimilatory nitrate reduction to ammonium (DNRA) or anaerobic ammonium oxidation, although DNRA bacteria increased in the algae treatment and this coincided with accumulation of ammonium. The algae addition also caused higher emissions of methane (CH4) and nitrous oxide (N2O). The bacterial community in this treatment had a large proportion of Bacteroidia, sulfate reducing taxa and bacteria known as fermenters. Functional gene abundances indicated an imbalance between organisms that produce N2O in relation to those that can reduce it, with the algae treatment showing the lowest relative capacity for N2O reduction. These findings show that pond sediments have the potential to contribute to mitigating nitrate levels in water from mining industry, but it is important to consider the type of carbon supply as it affects the community composition, which in turn can lead to unwanted processes and increased greenhouse gas emissions.
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Affiliation(s)
- Maria Hellman
- Swedish University of Agricultural Sciences, Department of Forest Mycology and Plant Pathology, Box 7026, 75007, Uppsala, Sweden.
| | - Germán Bonilla-Rosso
- Swedish University of Agricultural Sciences, Department of Forest Mycology and Plant Pathology, Box 7026, 75007, Uppsala, Sweden.
| | - Anders Widerlund
- Luleå University of Technology, Division of Geosciences and Environmental Engineering, 97187, Luleå, Sweden.
| | - Jaanis Juhanson
- Swedish University of Agricultural Sciences, Department of Forest Mycology and Plant Pathology, Box 7026, 75007, Uppsala, Sweden.
| | - Sara Hallin
- Swedish University of Agricultural Sciences, Department of Forest Mycology and Plant Pathology, Box 7026, 75007, Uppsala, Sweden.
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Aires T, Muyzer G, Serrão EA, Engelen AH. Seaweed Loads Cause Stronger Bacterial Community Shifts in Coastal Lagoon Sediments Than Nutrient Loads. Front Microbiol 2019; 9:3283. [PMID: 30687271 PMCID: PMC6333863 DOI: 10.3389/fmicb.2018.03283] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 12/17/2018] [Indexed: 11/23/2022] Open
Abstract
The input of nutrients from anthropogenic sources is the leading cause of coastal eutrophication and is usually coupled with algal/seaweed blooms. Effects may be magnified in semi-enclosed systems, such as highly productive coastal lagoon ecosystems. Eutrophication and seaweed blooms can lead to ecosystem disruption. Previous studies have considered only one of these factors, disregarding possible interactive effects and the effect of the blooming species' identity on sediment bacterial communities. We tested the effect of experimental nutrient loading and two common blooming seaweeds (Ulva rigida and Gracilaria vermiculophylla) in coastal lagoon sediments, on the structure of bacterial communities (using 16S rRNA amplicon sequencing) and corresponding putative functional potential (using PiCRUSt). At the Operational Taxonomic Unit (OTU) level, the addition of nutrients reduced bacterial community α-diversity and decreased the abundance of sulfate reducers (Desulfobacterales) compared to sulfur oxidizers/denitrifiers (Chromatiales and Campylobacterales), whereas this was not the case at the order level. Seaweed addition did not change bacterial α-diversity and the effect on community structure depended on the taxonomic level considered. The addition of Gracilaria increased the abundance of orders and OTUs involved in sulfate reduction and organic matter decomposition (Desulfobacterales, Bacteroidales, and Clostridiales, respectively), an effect which was also detected when only Ulva was added. Nutrients and the seaweeds combined only interacted for Ulva and nutrients, which increased known sulfide oxidizers and denitrifiers (order Campylobacterales). Seaweed enrichment affected putative functional profiles; a stronger increase of sulfur cycling KEGG pathways was assigned to nutrient-disturbed sediments, particularly with the seaweeds and especially Ulva. In contrast, nitrogen and sulfur cycle pathways showed a higher abundance of genes related to dissimilatory nitrate reduction to ammonium (DNRA) in Ulva+nutrients treatments. However, the other seaweed treatments increased the nitrogen fixation genes. Thiosulfate reduction, performed by sulfate-reducing bacteria, increased in seaweed treatments except when Ulva was combined with nutrients. In conclusion, the in situ addition of nutrients and the seaweeds to intertidal sediments affected the bacterial communities differently and independently. The predicted functional profile suggests a shift in relative abundances of putative pathways for nitrogen and sulfur cycles, in line with the taxonomic changes of the bacterial communities.
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Affiliation(s)
- Tânia Aires
- Centro de Ciências do Mar (CCMAR), Centro de Investigação Marinha e Ambiental (CIMAR), Universidade do Algarve, Faro, Portugal
| | - Gerard Muyzer
- Microbial Systems Ecology, Department of Freshwater and Marine Ecology, Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, Netherlands
| | - Ester A. Serrão
- Centro de Ciências do Mar (CCMAR), Centro de Investigação Marinha e Ambiental (CIMAR), Universidade do Algarve, Faro, Portugal
| | - Aschwin H. Engelen
- Centro de Ciências do Mar (CCMAR), Centro de Investigação Marinha e Ambiental (CIMAR), Universidade do Algarve, Faro, Portugal
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Cai J, Bai C, Tang X, Dai J, Gong Y, Hu Y, Shao K, Zhou L, Gao G. Characterization of bacterial and microbial eukaryotic communities associated with an ephemeral hypoxia event in Taihu Lake, a shallow eutrophic Chinese lake. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:31543-31557. [PMID: 30206827 DOI: 10.1007/s11356-018-2987-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 08/15/2018] [Indexed: 06/08/2023]
Abstract
While the important roles of microbial communities in oceanic hypoxic zones were beginning to be understood, little is known about microbial community associated with this phenomenon in shallow lakes. To address this deficit, both the bacterial and microbial eukaryotic communities of an ephemeral hypoxic area of Taihu Lake were characterized. The hypoxia provided nutritional niches for various bacteria, which results in high abundance and diversity. Specific bacterial groups, such as vadinBC27 subgroup of Bacteroidetes, Burkholderiales, Rhodocyclales, Pseudomonas, and Parcubacteria, were dominated in hypoxic sites and relevant to the fermentation, denitrification, nitrification, and sulfur metabolism. Conversely, most of microbial eukaryotes disappeared along with the decline of DO. An unexpected dominance of fungi was observed during hypoxia, which partly explained by the accumulation of toxic algae. Mucor was the single dominant genus in the hypoxic zone. We proposed that this group might cooperate with bacterial communities in the anaerobic degradation of algal biomass and woody materials. Generally, the hypoxic microbiome in shallow lakes is mainly involved in fermentative metabolism depending on phytodetritus and is potentially influenced by terrestrial sources. This study provided new insights into the unique microbiome in short-term hypoxia in shallow lakes and lays the foundation for studies that will enhance our understanding of the microbial players associated with hypoxia and their adaption strategy on the global scale.
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Affiliation(s)
- Jian Cai
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China
| | - Chengrong Bai
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China
| | - Xiangming Tang
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China
| | - Jiangyu Dai
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing, 210029, People's Republic of China
| | - Yi Gong
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China
| | - Yang Hu
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China
| | - Keqiang Shao
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China
| | - Lei Zhou
- University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China
| | - Guang Gao
- State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, People's Republic of China.
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11
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Wang Z, Xu Z, Li X. Biodegradation of methamphetamine and ketamine in aquatic ecosystem and associated shift in bacterial community. JOURNAL OF HAZARDOUS MATERIALS 2018; 359:356-364. [PMID: 30048950 DOI: 10.1016/j.jhazmat.2018.07.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 07/05/2018] [Accepted: 07/09/2018] [Indexed: 06/08/2023]
Abstract
Methamphetamine (METH) and ketamine (KET) are widely detected in surface waters and thus may pose threat to aquatic organisms. However, their degradation in aquatic systems and the effects on bacterial community were unknown. The present study investigated the biodegradation process of METH and KET in river waters and sediments. Three microcosms were examined over 40-days' incubation under (i) aerobic and illumination conditions, (ii) anaerobic condition exposed to light, (iii) anaerobic-dark condition. Statistically significant biodegradation of METH and KET (1 mg L-1) was observed in all treatments. The half-lives under the examined conditions indicate that the two drugs were refractory in aquatic environment. Moreover, there were no pronounced absorption and photolysis observed in this work. Illumina MiSeq sequencing analysis revealed that Methylophilaceae, Saprospiraceae, WCHB1-69, Desulfobulbaceae, Porphyromonadaceae, FamilyXI, Peptococcaceae, and Rhizobiaceae were the predominant candidatus families during KET and METH biodegradation, and the preponderance would impair other microorganisms' prosperity since them were scarcely detected in the wild. Meanwhile, canonical correlation analysis (CCA) indicates that METH as an environmental factor may affect bacterial community structure in field water samples.
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Affiliation(s)
- Zhenglu Wang
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Zeqiong Xu
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Xiqing Li
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
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12
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Lv L, Li W, Bian J, Yu Y, Li D, Zheng Z. Evaluation of phase separation in a single-stage vertical anaerobic reactor: Performance and microbial composition analysis. BIORESOURCE TECHNOLOGY 2018; 261:370-378. [PMID: 29680703 DOI: 10.1016/j.biortech.2018.04.025] [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: 02/21/2018] [Revised: 04/04/2018] [Accepted: 04/06/2018] [Indexed: 06/08/2023]
Abstract
In order to explore whether the acidogenic phase and methanogenic phase could be separated vertically into a single-stage anaerobic reactor, a controlled double circulation (CDC) anaerobic reactor was proposed for treating traditional Chinese medicine (TCM) wastewater in this study. The results showed that most of the organic pollutants and refractory were removed in the first reaction area where most of the amount of sludge existed. The organic acids were accumulated in the first reaction area, and larger specific methanogenic activity (SMA) and coenzyme F420 values were found in the second reaction area. Bacterial and archaeal community structures in the two reaction areas of the CDC reactor were analyzed by Illumina MiSeq Sequencing, which revealed that the archaeal community showed larger difference compared with the bacterial community. Differences in the performance and microbial composition of the two reaction areas confirmed that phase separation was implemented in the CDC reactor.
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Affiliation(s)
- Longyi Lv
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Weiguang Li
- State Key Laboratory of Urban Water Resource and Environment, Harbin 150090, PR China; School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Jiyong Bian
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Yang Yu
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Donghui Li
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Zejia Zheng
- School of Environment, Harbin Institute of Technology, Harbin 150090, PR China
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13
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Jiang X, Ying D, Ye D, Zhang R, Guo Q, Wang Y, Jia J. Electrochemical study of enhanced nitrate removal in wastewater treatment using biofilm electrode. BIORESOURCE TECHNOLOGY 2018; 252:134-142. [PMID: 29316499 DOI: 10.1016/j.biortech.2017.12.078] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 12/18/2017] [Accepted: 12/25/2017] [Indexed: 06/07/2023]
Abstract
Bioelectrochemical enhanced nitrate removal in wastewater with high total nitrogen and low organic carbon was electrochemically investigated focusing on the relationship between biochemical and electrochemical nitrogen cycles. Under optimized external voltage of -0.6 V, apparent nitrate removal rate of bioelectrochemical denitrification was 76% higher than normal biofilm denitrification. And with the introduction of biofilm on the electrode, new reduction peak of N2O, much larger current density, and 0.4 V positively shift of on-set potential of nitrate reduction reaction were observed, suggesting a synergy of electrochemical reaction and biological reaction through enhanced electrochemical reduction of intermediate products from biological process. Oxygen reduction reaction could not be avoided during nitrogen electrochemical reduction reaction since their similar reduction potential. But it led to decrease of oxygen concentration and therefore contribute to biological denitrification. Bacteria community tests also supported a dominant bacteria which could denitrify and use external electron.
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Affiliation(s)
- Xuan Jiang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
| | - Diwen Ying
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
| | - Dian Ye
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
| | - Runqiu Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
| | - Qingbin Guo
- School of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, Shandong, China
| | - Yalin Wang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China
| | - Jinping Jia
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai 200240, China.
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14
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Design features of offshore oil production platforms influence their susceptibility to biocorrosion. Appl Microbiol Biotechnol 2017; 101:6517-6529. [DOI: 10.1007/s00253-017-8356-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 05/18/2017] [Accepted: 05/20/2017] [Indexed: 01/24/2023]
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