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Xue Z, Xiong Z, Wei Z, Wang L, Xu M. Interactive Effects of Polyethylene Microplastics and Cadmium on Growth of Microcystis aeruginosa. TOXICS 2024; 12:254. [PMID: 38668477 PMCID: PMC11053517 DOI: 10.3390/toxics12040254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 03/26/2024] [Accepted: 03/26/2024] [Indexed: 04/29/2024]
Abstract
Polyethylene (PE) is a common component of microplastic pollution, and cadmium (Cd) is a prevalent pollutant in contaminated freshwater bodies in China. Among cyanobacteria, Microcystis aeruginosa (M. aeruginosa) plays a crucial role in the formation of algal blooms in these water systems. However, there has been limited research on how microplastics and heavy metals affect cyanobacteria ecologically. This study aimed to evaluate the physiological effects of individual and combined exposure to Cd pollutants and microplastics on M. aeruginosa. The solutions containing 13 µm and 6.5 µm PE particles (100 mg/L) with Cd were used in the research. The results indicated that the combined treatment led to a significant inhibition of chlorophyll a content, dropping to zero by day 5. The treated groups exhibited higher microcystins (MCs) content compared to the control group, suggesting increased MCs release due to pollutant exposure. Interestingly, the adsorption of heavy metals by microplastics partially alleviated the toxicity of heavy metals on algal cells. Moreover, the combined treatment significantly suppressed catalase (CAT) activity compared to Cd treatment, indicating a synergistic effect that led to greater oxidative stress. Overall, this study provides valuable insights into the impact of PE and Cd pollution on freshwater ecosystems, elucidates the physiological responses of cyanobacteria to these pollutants, and establishes a theoretical groundwork for addressing complex water pollution using cyanobacteria-based strategies.
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Affiliation(s)
- Zihan Xue
- Miami College, Jinming Campus, Henan University, Kaifeng 475004, China; (Z.X.); (Z.X.); (Z.W.)
| | - Zetao Xiong
- Miami College, Jinming Campus, Henan University, Kaifeng 475004, China; (Z.X.); (Z.X.); (Z.W.)
| | - Zhangdong Wei
- Miami College, Jinming Campus, Henan University, Kaifeng 475004, China; (Z.X.); (Z.X.); (Z.W.)
| | - Lin Wang
- Miami College, Jinming Campus, Henan University, Kaifeng 475004, China; (Z.X.); (Z.X.); (Z.W.)
- College of Geography and Environmental Science, Jinming Campus, Henan University, Kaifeng 475004, China
- Henan Key Laboratory of Earth System Observation and Modeling, Jinming Campus, Henan University, Kaifeng 475004, China
| | - Ming Xu
- College of Geography and Environmental Science, Jinming Campus, Henan University, Kaifeng 475004, China
- Henan Key Laboratory of Earth System Observation and Modeling, Jinming Campus, Henan University, Kaifeng 475004, China
- Guangdong-Hong Kong Joint Laboratory for Carbon Neutrality, Jiangmen Laboratory of Carbon Science and Technology, Jiangmen 529199, China
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Yanez-Montalvo A, Aguila B, Gómez-Acata ES, Guerrero-Jacinto M, Oseguera LA, Falcón LI, Alcocer J. Shifts in water column microbial composition associated to lakes with different trophic conditions: "Lagunas de Montebello" National Park, Chiapas, México. PeerJ 2022; 10:e13999. [PMID: 36132223 PMCID: PMC9484458 DOI: 10.7717/peerj.13999] [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: 12/03/2021] [Accepted: 08/13/2022] [Indexed: 01/19/2023] Open
Abstract
Eutrophication is a global problem causing the reduction of water quality and the loss of ecosystem goods and services. The lakes of the "Lagunas de Montebello" National Park (LMNP), Chiapas, Mexico, not only represent unique and beautiful natural scenic sites in southern Mexico but are also a national protected area and RAMSAR site. Unfortunately, some of these lakes started showing eutrophication signs since 2003. Anthropogenic activities (e.g., land-use change from forested to agricultural and urban development) are leading to water quality and trophic state alterations of the lakes of the LMNP. This study shows the results of a coupled limnological characterization and high-throughput sequencing of the V4 hypervariable region of the 16S rRNA gene to analyze the microbial composition of the water column in a set of oligotrophic and eutrophic lakes. Chlorophyll a (Chl-a) was the main environmental parameter correlated with the trophic conditions of the lakes. Although the microbial diversity was similar, the microbial composition changed significantly from oligo to eutrophic lakes. Proteobacteria, Firmicutes, and Cyanobacteria were the main components of oligotrophic lakes, and Cyanobacteria, Proteobacteria, and Bacteroidetes of eutrophic lakes. While Acinetobacter (Proteobacteria) and Cyanobium (a unicellular cyanobacterium) dominated in oligotrophic lakes, the filamentous, bloom-forming, and toxin-producing cyanobacteria Planktothrix was the dominant genus in eutrophic lakes. High-throughput sequencing allowed the detection of changes in the composition of the microbial component in oligotrophic lakes, suggesting a shift towards eutrophication, highlighting the relevance of sensitive monitoring protocols of these ecosystems to implement remediation programs for eutrophicated lakes and conservation strategies for those yet pristine.
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Affiliation(s)
- Alfredo Yanez-Montalvo
- Instituto de Ecología, Universidad Nacional Autónoma de México, Mérida, YUCATÁN, Mexico,Unidad Chetumal, El Colegio de la Frontera Sur, Chetumal, QR, Yucatán, Mexico
| | - Bernardo Aguila
- Instituto de Ecología, Universidad Nacional Autónoma de México, Mérida, YUCATÁN, Mexico,Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Coyoacán, CdMx, Mexico
| | | | - Miriam Guerrero-Jacinto
- Instituto de Ecología, Universidad Nacional Autónoma de México, Mérida, YUCATÁN, Mexico,Posgrado en Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Merida, Yucatan, Mexico
| | - Luis A. Oseguera
- Grupo de Investigación en Limnología Tropical, FES Iztacala, Universidad Nacional Autonoma de México, Iztacala, Estado de México, Mexico
| | - Luisa I. Falcón
- Instituto de Ecología, Universidad Nacional Autónoma de México, Mérida, YUCATÁN, Mexico
| | - Javier Alcocer
- Grupo de Investigación en Limnología Tropical, FES Iztacala, Universidad Nacional Autonoma de México, Iztacala, Estado de México, Mexico
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Ape F, Manini E, Quero GM, Luna GM, Sarà G, Vecchio P, Brignoli P, Ansferri S, Mirto S. Biostimulation of in situ microbial degradation processes in organically-enriched sediments mitigates the impact of aquaculture. CHEMOSPHERE 2019; 226:715-725. [PMID: 30959456 DOI: 10.1016/j.chemosphere.2019.03.178] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 03/12/2019] [Accepted: 03/27/2019] [Indexed: 06/09/2023]
Abstract
Fish farm deposition, resulting in organic matter accumulation on bottom sediments, has been identified as among the main phenomena causing negative environmental impacts in aquaculture. An in situ bioremediation treatment was carried out in order to reduce the organic matter accumulation in the fish farm sediments by promoting the natural microbial biodegradation processes. To assess the effect of the treatment, the concentration of organic matter in the sediment and its microbial degradation, as well as the response of the benthic prokaryotic community, were investigated. The results showed a significant effect of the treatment in stimulating microbial degradation rates, and the consequent decrease in the concentration of biochemical components beneath the cages during the treatment. During the bioremediation process, the prokaryotic community in the fish farm sediment responded to the overall improvement of the sediment conditions by showing the decrease of certain anaerobic taxa (e.g. Clostridiales, Acidaminobacteraceae and Caldilinaceae). This suggested that the bioactivator was effective in promoting a shift from an anaerobic to an aerobic metabolism in the prokaryotic community. However, the larger importance of Lachnospiraceae (members of the gut and faecal microbiota of the farmed fishes) in treated compared to non-treated sediments suggested that the bioactivator was not efficient in reducing the accumulation of faecal bacteria from the farmed fishes. Our results indicate that bioremediation is a promising tool to mitigate the aquaculture impact in fish farm sediments, and that further research needs to be oriented to identifying more successful interventions able to specifically target also fish-faeces related microbes.
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Affiliation(s)
- Francesca Ape
- Istituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino (IAS-CNR), Via G. da Verrazzano, 17, 91014, Castellammare del Golfo, TP, Italy
| | - Elena Manini
- Istituto per le Risorse Biologiche e le Biotecnologie Marine (IRBIM-CNR), Via Largo Fiera della Pesca, 1 - 60122 Ancona, Italy
| | - Grazia Marina Quero
- Stazione Zoologica Anton Dohrn, Integrative Marine Ecology Department, 80121, Napoli, Italy
| | - Gian Marco Luna
- Istituto per le Risorse Biologiche e le Biotecnologie Marine (IRBIM-CNR), Via Largo Fiera della Pesca, 1 - 60122 Ancona, Italy
| | - Gianluca Sarà
- Dipartimento di Scienze della Terra e del Mare, University of Palermo, Viale delle Scienze Ed. 16, 90128, Palermo, Italy
| | - Paolo Vecchio
- Eurovix S.p.A. - V.le E. Mattei 17, 24060, Entratico (Bergamo), Italy
| | | | - Sante Ansferri
- Eurovix S.p.A. - V.le E. Mattei 17, 24060, Entratico (Bergamo), Italy
| | - Simone Mirto
- Istituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino (IAS-CNR), Via G. da Verrazzano, 17, 91014, Castellammare del Golfo, TP, Italy.
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Schmack M, Chambers J, Dallas S. Evaluation of a bacterial algal control agent in tank-based experiments. WATER RESEARCH 2012; 46:2435-2444. [PMID: 22386889 DOI: 10.1016/j.watres.2012.02.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 01/27/2012] [Accepted: 02/11/2012] [Indexed: 05/31/2023]
Abstract
A bacterial-based bioremediation product, LakeRelief™ by Novozymes (Waterguru LakeRelief, 2011), was tested in a series of experiments between October 2008 and March 2009 to evaluate its suitability as a short-term intervention technique to reduce algal blooms in the Swan-Canning River system. Results from fibreglass tank experiments (1100 L) suggested that the product did not actively attack and lyse algal cells. The product decreased NH(4) and NO(x) concentrations in treated tanks, both aerated and non-aerated. Product application decreased PO(4) concentrations in non-aerated tanks but not in aerated tanks. The product appeared to suppress algal growth in non-aerated tanks over short periods (several days). Algal growth regularly diminished after product application but reappeared shortly afterwards. Aeration had a negative effect on bacterial proliferation in the tanks, possibly through alteration of environmental conditions (e.g. water mixing). As a consequence of the environmental conditions in the tanks being counterproductive to the development of a representative microbial composition, several aspects regarding the product's effectiveness could not be assessed satisfactorily in the tank experiments. The importance of long-term nutrient immobilisation into a well developed food web and the subsequent nutrient removal through removal of the top order organisms is highlighted.
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Affiliation(s)
- M Schmack
- Murdoch University, Environmental Science, Perth South Street, Murdoch, Western Australia 6150, Australia.
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Lopes RB, Olinda RA, Souza BAI, Cyrino JEP, Dias CTS, Queiroz JF, Tavares LHS. Efficiency of bioaugmentation in the removal of organic matter in aquaculture systems. BRAZ J BIOL 2011; 71:409-19. [DOI: 10.1590/s1519-69842011000300010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2010] [Accepted: 07/07/2010] [Indexed: 11/22/2022] Open
Abstract
Several techniques are currently used to treat effluents. Bioaugmentation is a new bioremediation strategy and has been employed to improve effluent quality by treating the water during the production process. This technology consists basically of the addition of microorganisms able to degrade or remove polluting compounds, especially organic matter and nutrients. The objective of this study was to assess the effects of bioaugmentation on some parameters of organic matter and on the performance of juvenile tilapias in an intensive aquaculture production system. The combination of two bacterial consortiums in a complete randomized design was employed in a factorial analysis with two factors. Statistical differences between treatments were analyzed by the analysis of variance (ANOVA) and Tukey test at the 5% level. One of the treatments, heterotrophic bacterial supplementation, was able to reduce biochemical oxygen demand (BOD) by 23%, dissolved organic carbon (DOC) by 83.7% and phytoplanktonic biomass by 43%. On the other hand, no damage was done to either the physical-chemical indicators of water quality or to the growth performance of juvenile tilapias assessed in this study.
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Affiliation(s)
- RB Lopes
- Universidade Federal do Oeste do Pará, Brazil
| | | | | | | | - CTS Dias
- Universidade de São Paulo, Brazil
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Zhao S, Hu N, Chen Z, Zhao B, Liang Y. Bioremediation of reclaimed wastewater used as landscape water by using the denitrifying bacterium Bacillus cereus. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2009; 83:337-340. [PMID: 19280091 DOI: 10.1007/s00128-009-9684-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2008] [Accepted: 02/26/2009] [Indexed: 05/27/2023]
Abstract
Organic matter and nitrogen removal from reclaimed wastewater used as landscape water was carried out by in situ bioremediation. A denitrifying bacterium Bacillus cereus DNF409 was introduced for this purpose, and the amount of B. cereus used was optimized. The total nitrogen (TN) content and chemical oxygen demand (COD) of the landscape water decreased from 9.86 to 3.1 mg/L (removal rate, 68.6%) and from 127 to 36 mg/L (removal rate, 71.7%). The transparency of water increased from 0.2 to 0.55 m.
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Affiliation(s)
- Shumiao Zhao
- State Key Laboratory of Agricultural Microbiology and College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
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