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Prokisch J, Nguyen DHH, Muthu A, Ferroudj A, Singh A, Agrawal S, Rajput VD, Ghazaryan K, El-Ramady H, Rai M. Carbon Nanodot-Microbe-Plant Nexus in Agroecosystem and Antimicrobial Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1249. [PMID: 39120354 PMCID: PMC11314255 DOI: 10.3390/nano14151249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2024] [Revised: 07/18/2024] [Accepted: 07/23/2024] [Indexed: 08/10/2024]
Abstract
The intensive applications of nanomaterials in the agroecosystem led to the creation of several environmental problems. More efforts are needed to discover new insights in the nanomaterial-microbe-plant nexus. This relationship has several dimensions, which may include the transport of nanomaterials to different plant organs, the nanotoxicity to soil microbes and plants, and different possible regulations. This review focuses on the challenges and prospects of the nanomaterial-microbe-plant nexus under agroecosystem conditions. The previous nano-forms were selected in this study because of the rare, published articles on such nanomaterials. Under the study's nexus, more insights on the carbon nanodot-microbe-plant nexus were discussed along with the role of the new frontier in nano-tellurium-microbe nexus. Transport of nanomaterials to different plant organs under possible applications, and translocation of these nanoparticles besides their expected nanotoxicity to soil microbes will be also reported in the current study. Nanotoxicity to soil microbes and plants was investigated by taking account of morpho-physiological, molecular, and biochemical concerns. This study highlights the regulations of nanotoxicity with a focus on risk and challenges at the ecological level and their risks to human health, along with the scientific and organizational levels. This study opens many windows in such studies nexus which are needed in the near future.
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Affiliation(s)
- József Prokisch
- Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Animal Science, Biotechnology and Nature Conservation, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary; (D.H.H.N.); (A.M.); (A.F.); (M.R.)
| | - Duyen H. H. Nguyen
- Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Animal Science, Biotechnology and Nature Conservation, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary; (D.H.H.N.); (A.M.); (A.F.); (M.R.)
- Tay Nguyen Institute for Scientific Research, Vietnam Academy of Science and Technology (VAST), Dalat 66000, Vietnam
- Doctoral School of Nutrition and Food Science, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary
| | - Arjun Muthu
- Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Animal Science, Biotechnology and Nature Conservation, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary; (D.H.H.N.); (A.M.); (A.F.); (M.R.)
- Doctoral School of Nutrition and Food Science, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary
| | - Aya Ferroudj
- Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Animal Science, Biotechnology and Nature Conservation, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary; (D.H.H.N.); (A.M.); (A.F.); (M.R.)
- Doctoral School of Animal Husbandry, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary
| | - Abhishek Singh
- Faculty of Biology, Yerevan State University, Yerevan 0025, Armenia; (A.S.); (K.G.)
| | - Shreni Agrawal
- Department of Biotechnology, Parul Institute of Applied Science, Parul University, Vadodara 391760, Gujarat, India;
| | - Vishnu D. Rajput
- Academy of Biology and Biotechnology, Southern Federal University, Rostov on Don 344006, Russia;
| | - Karen Ghazaryan
- Faculty of Biology, Yerevan State University, Yerevan 0025, Armenia; (A.S.); (K.G.)
| | - Hassan El-Ramady
- Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Animal Science, Biotechnology and Nature Conservation, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary; (D.H.H.N.); (A.M.); (A.F.); (M.R.)
- Soil and Water Department, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 33516, Egypt
| | - Mahendra Rai
- Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Animal Science, Biotechnology and Nature Conservation, University of Debrecen, 138 Böszörményi Street, 4032 Debrecen, Hungary; (D.H.H.N.); (A.M.); (A.F.); (M.R.)
- Department of Biotechnology, Sant Gadge Baba Amravati University, Amravati 444602, Maharashtra, India
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Joshi A, Joshi R, Koradiya P, Vank H. Changes of microbiome in response to supplements with silver nanoparticles in cotton rhizosphere. J Basic Microbiol 2023; 63:1451-1463. [PMID: 37718380 DOI: 10.1002/jobm.202300275] [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: 05/21/2023] [Revised: 07/20/2023] [Accepted: 08/26/2023] [Indexed: 09/19/2023]
Abstract
The current study focuses on analyzing the effects of supplements containing silver nanoparticles (AgNPs) on plant growth and rhizospheric bacterial communities. Specifically, the impact of AgNP supplements was assessed on both plant growth promoting traits and bacterial communities in the soil. To do this, a screening process was conducted to select bacteria capable of synthesizing AgNPs through extracellular biosynthesis. UV-Visible spectrophotometer, Fourier transform infrared, X-ray diffraction, scanning electron microscope, and field emission scanning electron microscopy all confirmed, produced AgNPs is in agglomerates form. The resulting AgNPs were introduced into soil along with various supplements and their effects were evaluated after 10 days using next generation sequencing (Illumina-16S rDNA V3-V4 region dependent) to analyze changes in bacterial communities. Seed germination, root-shoot biomass and chlorophyll content were used to assess the growth of the cotton plant, whereas the bacterial ability to promote growth was evaluated by measuring its culturable diversity including traits like phosphate solubilization and indole acetic acid production. The variance in Bray-Curtis β diversity among six selected combinations including control depends largely on the type of added supplements contributing to 95%-97% of it. Moreover, seed germination improves greatly between 63% and 100% at a concentration range of 1.4 to 2.8 mg/L with different types of supplements. Based on the results obtained through this study, it is evident that using AgNPs along with fructose could be an effective tool for promoting Gossypium hirsutum growth and enhancing plant growth traits like profiling rhizospheric bacteria. The results that have been obtained endorse the idea of boosting the growth of rhizospheric bacteria in a natural way when AgNPs are present. Using these supplements in fields that have been contaminated will lead to a better understanding of how ecological succession occurs among rhizospheric bacteria, and what effect it has on the growth of plants.
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Affiliation(s)
- Abhijeet Joshi
- Department of Microbiology, Atmiya University, Rajkot, Gujarat, India
| | - Radhika Joshi
- Department of Microbiology, Atmiya University, Rajkot, Gujarat, India
| | - Prushti Koradiya
- Department of Microbiology, Atmiya University, Rajkot, Gujarat, India
| | - Hetvi Vank
- Department of Microbiology, Atmiya University, Rajkot, Gujarat, India
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Rawat J, Kumar V, Ahlawat P, Tripathi LK, Tomar R, Kumar R, Dholpuria S, Gupta PK. Current Trends on the Effects of Metal-Based Nanoparticles on Microbial Ecology. Appl Biochem Biotechnol 2023; 195:6168-6182. [PMID: 36847986 DOI: 10.1007/s12010-023-04386-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/17/2023] [Indexed: 03/01/2023]
Abstract
The growing field of nanotechnology and its many applications have led to the irregular release of nanoparticles (NPs), with unintended effects on the environment and continued contamination of water bodies. Metallic NPs are used more frequently in extreme environmental conditions due to their higher efficiency, which attracts more attention in various applications. Due to improper pre-treatment of biosolids, inefficient wastewater treatment practices, and other unregulated agricultural practices continue to contaminate the environment. In particular, the uncontrolled use of NPs in various industrial applications has led to damage to the microbial flora and caused irreplaceable damage to animals and plants. This study focuses on the effect of different doses, types, and compositions of NP on the ecosystem. The review also mentions the impact of various metallic NPs on microbial ecology, their interactions with microorganisms, ecotoxicity studies, and dosage evaluation of the NPs, mainly focused on the review article. However, further research is still needed to understand the complexity of interactions between NPs and microbes in soil and aquatic ecosystems.
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Affiliation(s)
- Jyoti Rawat
- Department of Biotechnology, Sir J. C. Bose Technical Campus Bhimtal, Kumaun University, Nainital, 263136, Uttarakhand, India
| | - Vikas Kumar
- School of Engineering, The University of British Columbia, Okanagan, Kelowna, BC, Canada
| | | | - Lokesh Kumar Tripathi
- Department of Biotechnology, Sir J. C. Bose Technical Campus Bhimtal, Kumaun University, Nainital, 263136, Uttarakhand, India
| | - Richa Tomar
- Department of Chemistry and Biochemistry, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida, 201310, Uttar Pradesh, India
| | - Rohit Kumar
- Department of Life Sciences, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida, Uttar Pradesh, 201310, India
| | - Sunny Dholpuria
- Department of Life Sciences, J.C. Bose University of Science and Technology, YMCA, Faridabad, 121006, Haryana, India
| | - Piyush Kumar Gupta
- Department of Life Sciences, Sharda School of Basic Sciences and Research, Sharda University, Greater Noida, Uttar Pradesh, 201310, India.
- Department of Biotechnology, Graphic Era Deemed to Be University, Dehradun, 248002, Uttarakhand, India.
- Faculty of Health and Life Sciences, INTI International University, 71800, Nilai, Malaysia.
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Mahapatra DM, Satapathy KC, Panda B. Biofertilizers and nanofertilizers for sustainable agriculture: Phycoprospects and challenges. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 803:149990. [PMID: 34492488 DOI: 10.1016/j.scitotenv.2021.149990] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 08/17/2021] [Accepted: 08/24/2021] [Indexed: 05/21/2023]
Abstract
Increased food demands and ceasing nutrient deposits have resulted in a great shortfall between the food supply and demand and would be worse in the years to come. Higher inputs of synthetic fertilizers on lands have resulted in environmental pollution, persistent changes in the soil ecology, and physicochemical conditions. This has greatly decreased the natural soil fertility thereby hindering agricultural productivity, human health, and hygiene. Bio-based resilient nutrient sources as wastewater-derived algae are promising as a complete nutrient for agriculture and have the potential to be used in soilless cultivations. Innovations in nano-fortification and nano-sizing of minerals and algae have the potential to facilitate nutrients bioavailability and efficacy for a multifold increase in productivity. In this context, various options on minerals nanofertilizer application in agricultural food production besides efficient biofertilizer have been investigated. Algal biofertilizer with the nanoscale application has huge prospects for further agriculture productivities and fosters suitable development.
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Affiliation(s)
- Durga Madhab Mahapatra
- Center of Environment, Climate Change and Public Health, Utkal University, Vani Vihar, Bhubaneswar 751004, Odisha, India; Biological and Ecological Engineering Department, Oregon State University, Corvallis, OR, USA.
| | - Kanhu Charan Satapathy
- Center of Environment, Climate Change and Public Health, Utkal University, Vani Vihar, Bhubaneswar 751004, Odisha, India; Post Graduate Department of Anthropology, Utkal University, Bhubaneswar 751004, Odisha, India.
| | - Bhabatarini Panda
- Center of Environment, Climate Change and Public Health, Utkal University, Vani Vihar, Bhubaneswar 751004, Odisha, India; Post Graduate Department of Botany, Utkal University, Bhubaneswar 751004, Odisha, India.
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Abdulsada Z, Kibbee R, Schwertfeger D, Princz J, DeRosa M, Örmeci B. Fate and removal of silver nanoparticles during sludge conditioning and their impact on soil health after simulated land application. WATER RESEARCH 2021; 206:117757. [PMID: 34715524 DOI: 10.1016/j.watres.2021.117757] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 10/07/2021] [Accepted: 10/10/2021] [Indexed: 06/13/2023]
Abstract
The growing use of silver nanoparticles (AgNPs) in personal care products and clothing has increased their concentrations in wastewater and subsequently in sludge raising concerns about their fate and toxicity during wastewater treatment and after land application of sludge. This research investigated the fate and removal of AgNPs during chemical conditioning of anaerobically digested sludge and their impact on soil bacteria and health after land application. Ferric chloride (FeCl3), alum (Al2 (SO4)3 • (14-18) H2O), and synthetic (polyacrylamide) polymer were used for sludge conditioning. All conditioners effectively removed AgNPs from the liquid phase and concentrated them in sludge solids. Concentration analyses showed that out of 53.0 mg/L of silver in the sludge, only 0.1 to 0.003 mg/L of silver remained in the sludge supernatant after conditioning and 12 to 20% of this value were particulates. Morphological analyses also showed that AgNPs went through physical, chemical, and morphological changes in sludge that were not observed in nanopure water and the resulting floc structures and the incorporation of nanoparticles were different for each conditioner. The impact of conditioned AgNPs on the biological activities of soil was evaluated by investigating its impact on the presence of five important phyla (Acidobacteria, Actinobacteria, Bacteroidetes, Firmicutes and Proteobacteria). The results showed that AgNPs at a concentration of 20 mg AgNPs/g soil had a minimal impact on the presence and diversity of the assessed phyla. Also, using different chemicals for sludge conditioning resulted in different growth behavior of studied phyla. This study provides new insight into how the presence of AgNPs and different chemicals used for sludge conditioning might impact the soil biological activities and hence plant growth. The study also provides a solid basis for further research in the risk assessment of nanoparticle toxicity in biosolids amended soils.
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Affiliation(s)
- Zainab Abdulsada
- Department of Civil and Environmental Engineering, Carleton University, 1125 Colonel by Drive, Ottawa, ON K1S 5B6, Canada; Department of Environmental Engineering, University of Baghdad, Karrada, Al-Jadriya, Baghdad, Iraq (present address)
| | - Richard Kibbee
- Department of Civil and Environmental Engineering, Carleton University, 1125 Colonel by Drive, Ottawa, ON K1S 5B6, Canada
| | - Dina Schwertfeger
- Environment and Climate Change Canada, 335 River Road, Ottawa, ON K1V 1C7, Canada
| | - Juliska Princz
- Environment and Climate Change Canada, 335 River Road, Ottawa, ON K1V 1C7, Canada
| | - Maria DeRosa
- Department of Chemistry, Carleton University, 1125 Colonel by Drive, Ottawa, ON K1S 5B6, Canada
| | - Banu Örmeci
- Department of Civil and Environmental Engineering, Carleton University, 1125 Colonel by Drive, Ottawa, ON K1S 5B6, Canada.
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Abdulsada Z, Kibbee R, Princz J, DeRosa M, Örmeci B. Transformation of Silver Nanoparticles (AgNPs) during Lime Treatment of Wastewater Sludge and Their Impact on Soil Bacteria. NANOMATERIALS 2021; 11:nano11092330. [PMID: 34578645 PMCID: PMC8465233 DOI: 10.3390/nano11092330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 11/16/2022]
Abstract
This study investigated the impact of lime stabilization on the fate and transformation of AgNPs. It also evaluated the changes in the population and diversity of the five most relevant bacterial phyla in soil after applying lime-stabilized sludge containing AgNPs. The study was performed by spiking an environmentally relevant concentration of AgNPs (2 mg AgNPs/g TS) in sludge, applying lime stabilization to increase pH to above 12 for two hours, and applying lime-treated sludge to soil samples. Transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS) were used to investigate the morphological and compositional changes of AgNPs during lime stabilization. After the application of lime stabilized sludge to the soil, soil samples were periodically analyzed for total genomic DNA and changes in bacterial phyla diversity using quantitative polymerase chain reaction (qPCR). The results showed that lime treatment effectively removed AgNPs from the aqueous phase, and AgNPs were deposited on the lime molecules. The results revealed that AgNPs did not significantly impact the presence and diversity of the assessed phyla in the soil. However, lime stabilized sludge with AgNPs affected the abundance of each phylum over time. No significant effects on the soil total organic carbon (TOC), heterotrophic plate count (HPC), and percentage of the live cells were observed.
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Affiliation(s)
- Zainab Abdulsada
- Department of Civil and Environmental Engineering, Carleton University, Ottawa, ON K1S 5B6, Canada; (Z.A.); (R.K.)
- Department of Environmental Engineering, University of Baghdad, Karrada, Al-Jadriya, Baghdad, Iraq
| | - Richard Kibbee
- Department of Civil and Environmental Engineering, Carleton University, Ottawa, ON K1S 5B6, Canada; (Z.A.); (R.K.)
| | - Juliska Princz
- Environment and Climate Change Canada, 335 River Road South, Ottawa, ON K1V 1C7, Canada;
| | - Maria DeRosa
- Department of Chemistry, Carleton University, Ottawa, ON K1S 5B6, Canada;
| | - Banu Örmeci
- Department of Civil and Environmental Engineering, Carleton University, Ottawa, ON K1S 5B6, Canada; (Z.A.); (R.K.)
- Correspondence: ; Tel.: +1-613-520-2600 (ext. 4144)
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7
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McGee CF. The effects of silver nanoparticles on the microbial nitrogen cycle: a review of the known risks. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:31061-31073. [PMID: 32514926 DOI: 10.1007/s11356-020-09548-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 06/01/2020] [Indexed: 05/16/2023]
Abstract
The nitrogen cycle is an integral biogeochemical function for maintaining healthy environments. Nitrogen is a key nutrient that must be continuously replenished through recycling mechanisms to sustain ecosystems, disruption to which can result in compromised ecosystem functioning. Certain stages in the microbial conversion of nitrogen compounds are performed by a limited range of micro-organisms making these key functional species in ecosystems. The growing industrial use of silver nanoparticles (AgNPs) potentially poses significant risks for microbial nitrogen cycling species. AgNPs possess potent antimicrobial properties and are expected to reach a range of natural environments through several routes of exposure. Certain functional nitrogen cycling microbes have been shown to be highly susceptible to AgNP toxicity. The current literature indicates that AgNPs can negatively affect certain nitrogen fixing, nitrifying and denitrifying microbes in vitro. In vivo studies investigating the effect of AgNPs on nitrogen cycling microbial communities and nitrogen transformation rates in soil, sediment and sludge environments have also indicated disruption of these functional processes. This review provides a comprehensive description of the current state of knowledge regarding the toxicity of AgNPs to nitrogen cycling communities. The aim of the review is to highlight the most susceptible stages in the nitrogen cycle and the implications for the affected ecosystems.
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Affiliation(s)
- Conor Francis McGee
- Department of Agriculture, Food and the Marine, Cellbridge, Co. Kildare, Ireland.
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Maruyama CR, Bilesky-José N, de Lima R, Fraceto LF. Encapsulation of Trichoderma harzianum Preserves Enzymatic Activity and Enhances the Potential for Biological Control. Front Bioeng Biotechnol 2020; 8:225. [PMID: 32269991 PMCID: PMC7110528 DOI: 10.3389/fbioe.2020.00225] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 03/05/2020] [Indexed: 11/13/2022] Open
Abstract
Trichoderma harzianum is a biological control agent used against phytopathogens and biostimulation in agriculture. However, its efficacy can be affected by biotic and abiotic factors, and microencapsulation has been used to maximize the efficacy. The objective was to develop polymeric microparticles to encapsulate T. harzianum, to perform physicochemical characterization to evaluate its stability, to evaluate effects on the soil microbiota, antifungal activity in vitro and enzymatic activity. Size distribution of wet and dry microparticles was 2000 and 800 μm, respectively. Scanning electron microscopy showed spherical morphology and encapsulation of T. harzianum. Photostability assays showed that encapsulation protected the fungus against ultraviolet radiation. The evaluation of the microbiota showed that the proportion of denitrifying bacteria increased when compared to the control. The T. harzianum encapsulation showed an improvement in the chitinolytic and cellulosic activity. In vitro tests showed that encapsulated fungus were able to provide a greater control of S. sclerotiorum.
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Affiliation(s)
- Cintia Rodrigues Maruyama
- Environmental Nanotechnology Laboratory, Institute of Science and Technology of Sorocaba, São Paulo State University (UNESP), Sorocaba, Brazil.,Laboratory of Bioactivity Assessment and Toxicology of Nanomaterials, University of Sorocaba, Sorocaba, Brazil
| | - Natália Bilesky-José
- Laboratory of Bioactivity Assessment and Toxicology of Nanomaterials, University of Sorocaba, Sorocaba, Brazil
| | - Renata de Lima
- Laboratory of Bioactivity Assessment and Toxicology of Nanomaterials, University of Sorocaba, Sorocaba, Brazil
| | - Leonardo Fernandes Fraceto
- Environmental Nanotechnology Laboratory, Institute of Science and Technology of Sorocaba, São Paulo State University (UNESP), Sorocaba, Brazil
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Parada J, Rubilar O, Sousa DZ, Martínez M, Fernández-Baldo MA, Tortella GR. Short term changes in the abundance of nitrifying microorganisms in a soil-plant system simultaneously exposed to copper nanoparticles and atrazine. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 670:1068-1074. [PMID: 31018422 DOI: 10.1016/j.scitotenv.2019.03.221] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 03/14/2019] [Accepted: 03/14/2019] [Indexed: 06/09/2023]
Abstract
Copper nanoparticles (NCu) may co-exist with other pollutants in agricultural soils, such as pesticides. However, this has been little evaluated yet. Thus, possible effects of the simultaneous applications of pesticides and NCu on biogeochemical cycles are expected, for example on the nitrogen cycle. Therefore, the aim of this work was to evaluate the effect of simultaneous application of the herbicide atrazine (ATZ) and NCu on the abundance of total bacteria and nitrifying communities: ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB). Moreover, the ATZ dissipation was evaluated. A soil-plant system containing ATZ at field dose (3 mg a.i. kg-1) was mixed with two doses of NCu (0.05% or 0.15% w/w). Changes in the abundance of 16S rRNA and ammonia monooxygenase (amoA) genes of AOA and AOB were evaluated by real-time quantitative PCR (qPCR) at three sampling times (1, 15 and 30 days). The residual ATZ and nitrate production were also measured. The results showed significant differences in microbial composition and abundance over the 30 days of the experiment. Particularly, an initial decrease was observed in total bacterial abundance due to the presence of ATZ and NCu respect to ATZ alone (~60%). The abundance of AOA was also remarkably reduced (~85%), but these communities gradually recovered towards the end of the experiment. Conversely, AOB abundance initially increased (>100%) and remained mainly unaltered in soil exposed to ATZ and NCu 0.15% w/w, where nitrate formation was also constant. Moreover, NCu decreased the ATZ dissipation, which was translated in a 2-fold increase on the ATZ half-life values (T1/2). This study demonstrates that the simultaneous presence of NCu and ATZ may represent a risk for the total bacteria present in soil and sensitive microorganisms such as nitrifying communities, and changes in the dissipation of the pesticide could influence this process.
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Affiliation(s)
- J Parada
- Doctoral Program in Sciences of Natural Resources, Universidad de La Frontera, Temuco, Chile
| | - O Rubilar
- Departamento de Ingeniería Química, Universidad de La Frontera, Temuco, Chile; Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Temuco, Chile
| | - D Z Sousa
- Laboratory of Microbiology, Wageningen University & Research, Wageningen, The Netherlands
| | - M Martínez
- Departamento de Microbiología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - M A Fernández-Baldo
- INQUISAL, Departamento de Química, Universidad Nacional de San Luis, CONICET, Chacabuco 917, D5700BWS San Luis, Argentina
| | - G R Tortella
- Departamento de Ingeniería Química, Universidad de La Frontera, Temuco, Chile; Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Temuco, Chile.
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10
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The Role of Nanotechnology in the Fortification of Plant Nutrients and Improvement of Crop Production. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9030499] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Nutrient deficiency in food crops is seriously affecting human health, especially those in the rural areas, and nanotechnology may become the most sustainable approach to alleviating this challenge. There are several ways of fortifying the nutrients in food such as dietary diversification, use of drugs and industrial fortification. However, the affordability and sustainability of these methods have not been completely achieved. Plants absorb nutrients from fertilizers, but most conventional fertilizers have low nutrient use and uptake efficiency. Nanofertilizers are, therefore, engineered to be target oriented and not easily lost. This review surveys the effects of the addition of macro- and nanonutrients to soil, the interaction, and the absorption capability of the plants, the environmental effect and food content of the nutrients. Most reports were obtained from recent works, and they show that plants nutrients could be enriched by applying nanoparticulate nutrients, which are easily absorbed by the plant. Although there are some toxicity issues associated with the use of nanoparticles in crop, biologically synthesized nanoparticles may be preferred for agricultural purposes. This would circumvent the concerns associated with toxicity, in addition to being pollution free. This report, therefore, offers more understanding on the application of nanotechnology in biofortification of plant nutrients and the future possibilities offered by this practice. It also highlights some of the ills associated with the introduction of nanomaterials into the soil for crop’s improvement.
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Yang Q, Shan W, Hu L, Zhao Y, Hou Y, Yin Y, Liang Y, Wang F, Cai Y, Liu J, Jiang G. Uptake and Transformation of Silver Nanoparticles and Ions by Rice Plants Revealed by Dual Stable Isotope Tracing. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:625-633. [PMID: 30525513 DOI: 10.1021/acs.est.8b02471] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Knowledge on the uptake and transformation of silver nanoparticles (AgNPs) and Ag+ ions by organisms is critical for understanding their toxicity. Herein, the differential uptake, transformation, and translocation of AgNPs and Ag+ ions in hydroponic rice ( Oryza sativa L.) is assessed in modified Hewitt (with Cl- ions, HS(Cl)) and Hogland solutions (without Cl- ions, HS) using dual stable isotope tracing (107AgNO3 and 109AgNPs). After coexposure to 107Ag+ ions and 109AgNPs at 50 μg L-1 (as Ag for both) for 14 days, a stimulatory effect was observed on root elongation (increased by 68.8 and 71.9% for HS(Cl) and HS, respectively). Most of the Ag+ ions (from 107Ag+ ions and 109AgNPs) were retained on the root surface, while the occurrence of AgNPs (from 109AgNPs and 107Ag+ ions) was observed in the root, suggesting the direct uptake of AgNPs and/or reduction of Ag+ ions. Higher fractions of Ag+ ions in the shoot suggest an in vivo oxidation of AgNPs. These results demonstrated the intertransformation between Ag+ ions and AgNPs and the role of AgNPs as carriers and sources of Ag+ ions in organisms, which is helpful for understanding the fate and toxicology of Ag.
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Affiliation(s)
- Qingqing Yang
- Institute of Environment and Health, Jianghan University , Wuhan 430056 , China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , China
| | - Wanyu Shan
- Institute of Environment and Health, Jianghan University , Wuhan 430056 , China
| | - Ligang Hu
- Institute of Environment and Health, Jianghan University , Wuhan 430056 , China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , China
| | - Yao Zhao
- Beijing National Laboratory for Molecular Sciences, National Centre for Mass Spectrometry in Beijing, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
| | - Yinzhu Hou
- Beijing National Laboratory for Molecular Sciences, National Centre for Mass Spectrometry in Beijing, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
| | - Yongguang Yin
- Institute of Environment and Health, Jianghan University , Wuhan 430056 , China
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , China
| | - Yong Liang
- Institute of Environment and Health, Jianghan University , Wuhan 430056 , China
| | - Fuyi Wang
- Beijing National Laboratory for Molecular Sciences, National Centre for Mass Spectrometry in Beijing, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China
| | - Yong Cai
- Institute of Environment and Health, Jianghan University , Wuhan 430056 , China
- Department of Chemistry and Biochemistry , Florida International University , Miami , Florida 33199 , United States
| | - Jingfu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing 100085 , China
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12
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VandeVoort AR, Arai Y. Macroscopic Observation of Soil Nitrification Kinetics Impacted by Copper Nanoparticles: Implications for Micronutrient Nanofertilizer. NANOMATERIALS 2018; 8:nano8110927. [PMID: 30413042 PMCID: PMC6267574 DOI: 10.3390/nano8110927] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 10/30/2018] [Accepted: 11/03/2018] [Indexed: 11/29/2022]
Abstract
The potential agricultural use of metal nanoparticles (NPs) for slow-release micronutrient fertilizers is beginning to be investigated by both industry and regulatory agencies. However, the impact of such NPs on soil biogeochemical cycles is not clearly understood. In this study, the impact of commercially-available copper NPs on soil nitrification kinetics was investigated via batch experiments. The X-ray absorption near edge structure spectroscopy analysis showed that the NPs readily oxidized to Cu(II) and were strongly retained in soils with minimum dissolution (<1% of total mass). The Cu2+ (aq) at 1 mg/L showed a beneficial effect on the nitrification similar to the control: an approximately 9% increase in the average rate of nitrification kinetics (Vmax). However Vmax was negatively impacted by ionic Cu at 10 to 100 mg/L and CuNP at 1 to 100 mg/L. The copper toxicity of soil nitrifiers seems to be critical in the soil nitrification processes. In the CuNP treatment, the suppressed nitrification kinetics was observed at 1 to 100 mg/kg and the effect was concentration dependent at ≥10 mg/L. The reaction products as the results of surface oxidation such as the release of ionic Cu seem to play an important role in suppressing the nitrification process. Considering the potential use of copper NPs as a slow-release micronutrient fertilizer, further studies are needed in heterogeneous soil systems.
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Affiliation(s)
- Allison Rick VandeVoort
- Department of Biological and Environmental Sciences, Georgia College & State University, Campus Box 081, Milledgeville, GA 31061, USA.
| | - Yuji Arai
- Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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13
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Grün AL, Straskraba S, Schulz S, Schloter M, Emmerling C. Long-term effects of environmentally relevant concentrations of silver nanoparticles on microbial biomass, enzyme activity, and functional genes involved in the nitrogen cycle of loamy soil. J Environ Sci (China) 2018; 69:12-22. [PMID: 29941247 DOI: 10.1016/j.jes.2018.04.013] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 04/13/2018] [Accepted: 04/13/2018] [Indexed: 05/14/2023]
Abstract
The increasing production and use of engineered silver nanoparticles (AgNP) in industry and private households are leading to increased concentrations of AgNP in the environment. An ecological risk assessment of AgNP is needed, but it requires understanding the long term effects of environmentally relevant concentrations of AgNP on the soil microbiome. Hence, the aim of this study was to reveal the long-term effects of AgNP on soil microorganisms. The study was conducted as a laboratory incubation experiment over a period of one year using a loamy soil and AgNP concentrations ranging from 0.01 to 1 mg AgNP/kg soil. The short term effects of AgNP were, in general, limited. However, after one year of exposure to 0.01 mg AgNP/kg, there were significant negative effects on soil microbial biomass (quantified by extractable DNA; p = 0.000) and bacterial ammonia oxidizers (quantified by amoA gene copy numbers; p = 0.009). Furthermore, the tested AgNP concentrations significantly decreased the soil microbial biomass, the leucine aminopeptidase activity (quantified by substrate turnover; p = 0.014), and the abundance of nitrogen fixing microorganisms (quantified by nifH gene copy numbers; p = 0.001). The results of the positive control with AgNO3 revealed predominantly stronger effects due to Ag+ ion release. Thus, the increasing toxicity of AgNP during the test period may reflect the long-term release of Ag+ ions. Nevertheless, even very low concentrations of AgNP caused disadvantages for the microbial soil community, especially for nitrogen cycling, and our results confirmed the risks of releasing AgNP into the environment.
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Affiliation(s)
- Anna-Lena Grün
- Faculty of Regional and Environmental Sciences, Department of Soil Science, University of Trier, Trier, Germany.
| | - Susanne Straskraba
- J.W. Goethe University, Institute of Molecular Biosciences, Frankfurt am Main, Germany
| | - Stefanie Schulz
- Research for Comparative Microbiome Analysis, Helmholtz Zentrum München, Oberschleissheim, Germany
| | - Michael Schloter
- Research for Comparative Microbiome Analysis, Helmholtz Zentrum München, Oberschleissheim, Germany; Chair for Soil Science, Technische Universität München, Freising, Germany
| | - Christoph Emmerling
- Faculty of Regional and Environmental Sciences, Department of Soil Science, University of Trier, Trier, Germany
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14
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Kim MJ, Ko D, Ko K, Kim D, Lee JY, Woo SM, Kim W, Chung H. Effects of silver-graphene oxide nanocomposites on soil microbial communities. JOURNAL OF HAZARDOUS MATERIALS 2018; 346:93-102. [PMID: 29248800 DOI: 10.1016/j.jhazmat.2017.11.032] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 11/16/2017] [Accepted: 11/17/2017] [Indexed: 05/14/2023]
Abstract
Due to the application of silver-graphene oxide (Ag-GO) in diverse fields, it is important to investigate its potential impacts on the environment including soils. In this study, the response of microbial communities in soils treated with Ag-GO synthesized by glucose reduction was determined by analyzing enzyme activities, biomass, and inorganic N concentrations and by pyrosequencing. In soils treated with 0.1-1 mg Ag-GO g-1 soil, the activities of β-glucosidase, cellobiohydrolase, and xylosidase decreased up to 80% and NO3- concentration decreased up to 82% indicating inhibited nitrification. Within the bacterial community, the relative abundance of Acidobacteria and Cyanobacteria in soils treated with Ag-GO were lower than that in control soil. Meanwhile, the relative abundance of AD3 and Firmicutes tended to increase under Ag-GO treatments. These changes in bacterial community composition reflected lowered activities associated with C and N cycling. On the other hand, microbial biomass showed no distinct change in response to Ag-GO treatment. Our study can serve as important basis in establishing guidelines for regulating the release of nanocomposites such as Ag-GO to the soil environment.
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Affiliation(s)
- Min-Ji Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Daegeun Ko
- Department of Environmental Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Kwanyoung Ko
- Department of Environmental Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Dawon Kim
- Department of Environmental Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Ji-Yeon Lee
- Department of Environmental Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Sang Myeong Woo
- Department of Environmental Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Woong Kim
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Haegeun Chung
- Department of Environmental Engineering, Konkuk University, Seoul 05029, Republic of Korea.
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15
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Huang J, Cao C, Yan C, Liu J, Hu Q, Guan W. Impacts of silver nanoparticles on the nutrient removal and functional bacterial community in vertical subsurface flow constructed wetlands. BIORESOURCE TECHNOLOGY 2017; 243:1216-1226. [PMID: 28801173 DOI: 10.1016/j.biortech.2017.07.178] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 07/28/2017] [Accepted: 07/31/2017] [Indexed: 05/14/2023]
Abstract
The widespread utilization of silver nanoparticles (AgNPs) in industrial and commercial products inevitably raises the release into wastewater. In this study, the influences of AgNPs (0, 50 and 200μg/L) on the performance and microbial community of CWs were evaluated. Compared with the control system (without AgNPs), the COD removal was not affected, whereas the TN, NH4+-N, and TP removals were evidently affected in presence of AgNPs, and the effects had a positive relation with AgNPs concentration. In addition, AgNPs were effectively removed from wastewater and mainly accumulated in the soil layer and plant tissues. The illumina high-throughput sequencing results indicated that there were obvious variations in the microbial community at different AgNPs concentrations, associated with the variations of CW performance. Sequencing analyses also showed that Proteobacteria, Acidobacteria, Bacteroidetes were the dominant phyla. These results may provide valuable information and reference for evaluating the effect of AgNPs on constructed wetlands.
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Affiliation(s)
- Juan Huang
- Dept. of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 210096, China.
| | - Chong Cao
- Dept. of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 210096, China
| | - Chunni Yan
- Dept. of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 210096, China
| | - Jialiang Liu
- Dept. of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 210096, China
| | - Qian Hu
- Dept. of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 210096, China
| | - Wenzhu Guan
- Dept. of Municipal Engineering, School of Civil Engineering, Southeast University, Nanjing 210096, China
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16
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Samarajeewa AD, Velicogna JR, Princz JI, Subasinghe RM, Scroggins RP, Beaudette LA. Effect of silver nano-particles on soil microbial growth, activity and community diversity in a sandy loam soil. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 220:504-513. [PMID: 27717530 DOI: 10.1016/j.envpol.2016.09.094] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 09/23/2016] [Accepted: 09/29/2016] [Indexed: 05/23/2023]
Abstract
Silver nano-particles (AgNPs) are widely used in a range of consumer products as a result of their antimicrobial properties. Given the broad spectrum of uses, AgNPs have the potential for being released to the environment. As a result, environmental risks associated with AgNPs need to be assessed to aid in the development of regulatory guidelines. Research was performed to assess the effects of AgNPs on soil microbial activity and diversity in a sandy loam soil with an emphasis on using a battery of microbial tests involving multiple endpoints. The test soil was spiked with PVP coated (0.3%) AgNPs at the following concentrations of 49, 124, 287, 723 and 1815 mg Ag kg-1 dry soil. Test controls included an un-amended soil; soil amended with PVP equivalent to the highest PVP concentration of the coated AgNP; and soil amended with humic acid, as 1.8% humic acid was used as a suspension agent for the AgNPs. The impact on soil microbial community was assessed using an array of tests including heterotrophic plate counting, microbial respiration, organic matter decomposition, soil enzyme activity, biological nitrification, community level physiological profiling (CLPP), Ion Torrent™ DNA sequencing and denaturing gradient gel electrophoresis (DGGE). An impact on microbial growth, activity and community diversity was evident from 49 to 1815 mg kg-1 with the median inhibitory concentrations (IC50) as low as 20-31 mg kg-1 depending on the test. AgNP showed a notable impact on microbial functional and genomic diversity. Emergence of a silver tolerant bacterium was observed at AgNP concentrations of 49-287 mg kg-1 after 14-28 days of incubation, but not detectable at 723 and 1815 mg kg-1. The bacterium was identified as Rhodanobacter sp. The study highlighted the effectiveness of using multiple microbial endpoints for inclusion to the environmental risk assessment of nanomaterials.
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Affiliation(s)
- A D Samarajeewa
- Biological Assessment and Standardization Section, Environment and Climate Change Canada, 335, River Road, Ottawa, K1V 1C7, Ontario, Canada.
| | - J R Velicogna
- Biological Assessment and Standardization Section, Environment and Climate Change Canada, 335, River Road, Ottawa, K1V 1C7, Ontario, Canada
| | - J I Princz
- Biological Assessment and Standardization Section, Environment and Climate Change Canada, 335, River Road, Ottawa, K1V 1C7, Ontario, Canada
| | - R M Subasinghe
- Biological Assessment and Standardization Section, Environment and Climate Change Canada, 335, River Road, Ottawa, K1V 1C7, Ontario, Canada
| | - R P Scroggins
- Biological Assessment and Standardization Section, Environment and Climate Change Canada, 335, River Road, Ottawa, K1V 1C7, Ontario, Canada
| | - L A Beaudette
- Biological Assessment and Standardization Section, Environment and Climate Change Canada, 335, River Road, Ottawa, K1V 1C7, Ontario, Canada
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17
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Doolette CL, Gupta VVSR, Lu Y, Payne JL, Batstone DJ, Kirby JK, Navarro DA, McLaughlin MJ. Quantifying the Sensitivity of Soil Microbial Communities to Silver Sulfide Nanoparticles Using Metagenome Sequencing. PLoS One 2016; 11:e0161979. [PMID: 27575719 PMCID: PMC5004803 DOI: 10.1371/journal.pone.0161979] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 08/15/2016] [Indexed: 12/22/2022] Open
Abstract
Soils are a sink for sulfidised-silver nanoparticles (Ag2S-NPs), yet there are limited ecotoxicity data for their effects on microbial communities. Conventional toxicity tests typically target a single test species or function, which does not reflect the broader community response. Using a combination of quantitative PCR, 16S rRNA amplicon sequencing and species sensitivity distribution (SSD) methods, we have developed a new approach to calculate silver-based NP toxicity thresholds (HCx, hazardous concentrations) that are protective of specific members (operational taxonomic units, OTUs) of the soil microbial community. At the HC20 (80% of species protected), soil OTUs were significantly less sensitive to Ag2S-NPs compared to AgNPs and Ag+ (5.9, 1.4 and 1.4 mg Ag kg-1, respectively). However at more conservative HC values, there were no significant differences. These trends in OTU responses matched with those seen in a specific microbial function (rate of nitrification) and amoA-bacteria gene abundance. This study provides a novel molecular-based framework for quantifying the effect of a toxicant on whole soil microbial communities while still determining sensitive genera/species. Methods and results described here provide a benchmark for microbial community ecotoxicological studies and we recommend that future revisions of Soil Quality Guidelines for AgNPs and other such toxicants consider this approach.
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Affiliation(s)
- Casey L. Doolette
- School of Agriculture Food and Wine, The University of Adelaide, Adelaide, Australia
- * E-mail:
| | | | - Yang Lu
- Advanced Water Management Centre (AWMC), The University of Queensland, St. Lucia, Australia
| | - Justin L. Payne
- School of Natural and Built Environments, University of South Australia, Adelaide, Australia
| | - Damien J. Batstone
- Advanced Water Management Centre (AWMC), The University of Queensland, St. Lucia, Australia
| | - Jason K. Kirby
- CSIRO Land and Water, Environmental Contaminant Mitigation and Technologies Research Program, Adelaide, Australia
| | - Divina A. Navarro
- School of Agriculture Food and Wine, The University of Adelaide, Adelaide, Australia
- CSIRO Land and Water, Environmental Contaminant Mitigation and Technologies Research Program, Adelaide, Australia
| | - Mike J. McLaughlin
- School of Agriculture Food and Wine, The University of Adelaide, Adelaide, Australia
- CSIRO Land and Water, Environmental Contaminant Mitigation and Technologies Research Program, Adelaide, Australia
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18
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Hegde K, Brar SK, Verma M, Surampalli RY. Current understandings of toxicity, risks and regulations of engineered nanoparticles with respect to environmental microorganisms. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/s41204-016-0005-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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19
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He S, Feng Y, Ni J, Sun Y, Xue L, Feng Y, Yu Y, Lin X, Yang L. Different responses of soil microbial metabolic activity to silver and iron oxide nanoparticles. CHEMOSPHERE 2016; 147:195-202. [PMID: 26766356 DOI: 10.1016/j.chemosphere.2015.12.055] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 11/22/2015] [Accepted: 12/15/2015] [Indexed: 06/05/2023]
Abstract
The knowledge regarding the effects of metal or metal oxide nanoparticles on soil microbial metabolic activity and key ecological functions is limited, relative to the information about their species diversity. For this reason, the responses of soil microbial metabolic activity to silver (AgNPs) and iron oxide (FeONPs) nanoparticles, along concentration gradients of each, were evaluated by microcalorimetry and soil nitrification potential. The changes in abundances of bacteria, eukaryotes and ammonia-oxidizing bacteria were measured by real time quantitative PCR. It was found that AgNP (at 0.1, 1 and 10 mg kg(-1) soil) amendments decreased soil microbial metabolic activity, nitrification potential and the abundances of bacteria and ammonia-oxidizing bacteria; on the contrary, FeONPs had the positive effects on soil microbial metabolic activity (at 1 and 10 mg kg(-1) soil) and soil nitrification potential (at 0.1 and 1 mg kg(-1) soil). Specific microbial metabolic activity and specific nitrification potential further revealed that metal or metal oxide nanoparticles could change the C and N cycles of the agricultural soil through influencing soil microbial metabolism. These findings could deepen the understanding of the influence of NPs on soil microorganisms and their driven soil ecology process.
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Affiliation(s)
- Shiying He
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, Jiangsu Province, PR China
| | - Youzhi Feng
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, Jiangsu Province, PR China
| | - Jun Ni
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, Jiangsu Province, PR China
| | - Yufang Sun
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, Jiangsu Province, PR China
| | - Lihong Xue
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, Jiangsu Province, PR China
| | - Yanfang Feng
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, Jiangsu Province, PR China
| | - Yingliang Yu
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, Jiangsu Province, PR China
| | - Xiangui Lin
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, Jiangsu Province, PR China
| | - Linzhang Yang
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, Jiangsu Province, PR China.
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20
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Liu W, Yao J, Jin J, Ma J, Masakorala K. Microbial Toxicity of a Type of Carbon Dots to Escherichia coli. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2015; 69:506-514. [PMID: 26353753 DOI: 10.1007/s00244-015-0222-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 08/12/2015] [Indexed: 06/05/2023]
Abstract
Carbon dots (Cdots), as a class of novel photoluminescence nanoprobes, has attracted tremendous interest for its broad application in recent years. Thus, the toxicity and behavior of Cdots in biological systems become important fundamental problems that require significant attention. In this study, Cdots with diameters of 5 nm are produced using mixed-acid treatment. The Cdots exhibit strong yellow fluorescence under UV irradiation and shifted emission peaks as the excitation wavelength is changed. Gram-negative bacteria Escherichia coli (E. coli) are applied as testing model to study the biological effect of Cdots on the cell growth by microcalorimetric, spectroscopic, and microscopic investigation. The introducing of Cdots caused a gradual increase of the maximum heat power (P peak) and the total heat produced (Q total) at low concentrations (0.0-5.00 mg/L). The metabolism rate constant (k) and half inhibitory concentration (IC50) were calculated from the microcalorimetric data. The results indicated that Cdots had a concentration-dependent effect on the growth of E. coli. For confirmation, the growth curves and colony-forming units at different concentration of Cdots were studied. The morphology of E. coli in the absence and presence of Cdots was determined by scanning electron microscopy (SEM). The results of these studies were in agreement well with the analysis explored from microcalorimetry.
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Affiliation(s)
- Wenjuan Liu
- School of Civil and Environmental Engineering, and National International Cooperation Based on Environment and Energy, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing, 100083, China
| | - Jun Yao
- School of Civil and Environmental Engineering, and National International Cooperation Based on Environment and Energy, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing, 100083, China.
- Key Laboratory of Biogeology and Environmental Geology of Chinese Ministry of Education, and Sino-Hungarian Joint Laboratory of Environmental Science and Health, China University of Geoscience, Wuhan, 430074, China.
| | - Jingnan Jin
- School of Civil and Environmental Engineering, and National International Cooperation Based on Environment and Energy, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing, 100083, China
| | - Jiaheng Ma
- School of Civil and Environmental Engineering, and National International Cooperation Based on Environment and Energy, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing, 100083, China
| | - Kanaji Masakorala
- Department of Botany, Faculty of Science, University of Ruhuna, Matara, Sri Lanka.
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21
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Impacts of engineered nanomaterials on microbial community structure and function in natural and engineered ecosystems. Appl Microbiol Biotechnol 2014; 98:8457-68. [DOI: 10.1007/s00253-014-6000-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Revised: 07/27/2014] [Accepted: 07/28/2014] [Indexed: 10/24/2022]
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