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Barari F, Eydi Gabrabad M, Bonyadi Z. Recent progress on the toxic effects of microplastics on Chlorella sp. in aquatic environments. Heliyon 2024; 10:e32881. [PMID: 38975222 PMCID: PMC11226894 DOI: 10.1016/j.heliyon.2024.e32881] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 06/08/2024] [Accepted: 06/11/2024] [Indexed: 07/09/2024] Open
Abstract
Microplastics (MPs) are emerging contaminants that have harmful effects on ecosystems. Microalgae are important primary producers in aquatic environments, providing nutrients for various organisms. These microorganisms may be affected by MPs. Therefore, it is important to investigate the toxicity aspects of different MPs on Chlorella species. It can be seen that the BG-11 culture medium was the most commonly used medium in 40 % of the studies for the growth of Chlorella sp. Chlorella sp. grows optimally at a temperature of 25 °C and a pH of 7. Most studies show that Chlorella sp. can grow in the range of 3000-6000 lux. Moreover, various techniques have been used to analyze the morphological properties of MPs in different studies. These techniques included scanning electron microscopy (SEM), Fourier transform infrared (FTIR), and transmission electron microscopy (TEM), which were used in 65 %, 35 %, and 27 % of the studies, respectively. 53 % of the research has focused on the toxic effects of PS on Chlorella sp. Findings show that 41 % of the studies investigated MPs concentrations in the range of 10-100 mg/L, followed by 32 % of the studies in the range of 100-1000 mg/L. The studies found that MPs were used in a spherical shape in 45 % of the cases. The enzymes most affected by MPs were superoxide dismutase (SOD) and Malondialdehyde (MDA), accounting for 48 % of the studies each. Additionally, exposure to MPs increased the activity of enzymes such as SOD and MDA. In general, it can be concluded that MPs had a relatively high negative effect on the growth of Chlorella sp.
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Affiliation(s)
- Fateme Barari
- Student Research Committee, Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohaddeseh Eydi Gabrabad
- Student Research Committee, Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ziaeddin Bonyadi
- Department of Environmental Health Engineering, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran
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Sousa B, Domingues I, Nunes B. A fish perspective on SARS-CoV-2: Toxicity of benzalkonium chloride on Danio rerio. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 102:104200. [PMID: 37394081 DOI: 10.1016/j.etap.2023.104200] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/16/2023] [Accepted: 06/26/2023] [Indexed: 07/04/2023]
Abstract
SARS-CoV-2 outbreak led to an increased marketing of disinfectants, creating a potential environmental problem. For instance, pre-pandemic environmental levels of the disinfectant benzalkonium chloride (BAC) ranging from 0.5 to 5 mgL-1 in effluents were expected to further increase threatening aquatic life. Our aim was to characterize potential adverse effects after an acute exposure of zebrafish to different concentrations of BAC. An increase in the overall swimming activity, thigmotaxis behavior, and erratic movements were observed. An increase in CYP1A1 and catalase activities, but inhibitions of CY1A2, GSTs and GPx activities were also noticed. BAC is metabolized by CYP1A1, increasing the production of H2O2, thereby activating the antioxidant enzyme CAT. Data also showed an increase of AChE activity. Our study highlights adverse embryonic, behavioral, and metabolic effects of noteworthy environmental significance, especially considering that the use and release of BAC is most likely to increase in a near future.
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Affiliation(s)
- Beatriz Sousa
- Centro de Estudos do Ambiente e do Mar (CESAM), Universidade De Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; Departamento De Biologia, Universidade De Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Inês Domingues
- Centro de Estudos do Ambiente e do Mar (CESAM), Universidade De Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; Departamento De Biologia, Universidade De Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Bruno Nunes
- Centro de Estudos do Ambiente e do Mar (CESAM), Universidade De Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal; Departamento De Biologia, Universidade De Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
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3
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Yu X, Xing H, Sun J, Du X, Lu G, Zhu L. New insight into phytometabolism and phytotoxicity mechanism of widespread plasticizer di (2-ethylhexyl) phthalate in rice plants. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 880:163254. [PMID: 37019237 DOI: 10.1016/j.scitotenv.2023.163254] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 03/30/2023] [Accepted: 03/30/2023] [Indexed: 05/27/2023]
Abstract
Di-(2-ethylhexyl) phthalate (DEHP) as widely utilized plasticizer has aroused increasing concerns since its endocrine disrupting effects and continuous accumulation in biota. To date, the interaction mechanism between DEHP and rice plants has not been clearly illustrated at molecular level. Here, we investigated biological transformation and response of rice plants (Oryza sativa L.) to DEHP at realistic exposure concentrations. Nontargeted screening by UPLC-QTOF-MS was used to verify 21 transformation products derived from phase I metabolism (hydroxylation and hydrolysis) and phase II metabolism (conjugation with amino acids, glutathione, and carbohydrates) in rice. MEHHP-asp, MEHHP-tyr, MEHHP-ala, MECPP-tyr and MEOHP-tyr as the conjugation products with amino acids are observed for the first time. Transcriptomics analyses unraveled that DEHP exposure had strong negative effects on genes associated with antioxidative components synthesis, DNA binding, nucleotide excision repair, intracellular homeostasis, and anabolism. Untargeted metabolomics revealed that metabolic network reprogramming in rice roots was induced by DEHP, including nucleotide metabolism, carbohydrate metabolism, amino acid synthesis, lipid metabolism, synthesis of antioxidant component, organic acid metabolism and phenylpropanoid biosynthesis. The integrated analyses of interaction between differentially expressed genes (DEGs) and differentially expressed metabolites (DEMs) endorsed that metabolic network regulated by DEGs was significantly interfered by DEHP, resulting in cell dysfunction of roots and visible growth inhibition. Overall, these finding generated fresh perspective for crops security caused by plasticizer pollution and enhanced the public focus on dietary risk.
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Affiliation(s)
- Xiaolong Yu
- Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, China
| | - Huanhuan Xing
- Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, China; School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Jianteng Sun
- Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, Guangdong, China.
| | - Xiaodong Du
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Guining Lu
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Lizhong Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China
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4
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Agathokleous E, Sonne C, Benelli G, Calabrese EJ, Guedes RNC. Low-dose chemical stimulation and pest resistance threaten global crop production. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 878:162989. [PMID: 36948307 DOI: 10.1016/j.scitotenv.2023.162989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 03/16/2023] [Accepted: 03/17/2023] [Indexed: 05/13/2023]
Abstract
Pesticide resistance increases and threatens crop production sustainability. Chemical contamination contributes to the development of pest resistance to pesticides, in part by causing stimulatory effects on pests at low sub-toxic doses and facilitating the spread of resistance genes. This article discusses hormesis and low-dose biological stimulation and their relevance to crop pest resistance. It highlights that a holistic approach is needed to tackle pest resistance to pesticides and reduce imbalance in accessing food and improving food security in accordance with the UN's Sustainable Development Goals. Among others, the effects of sub-toxic doses of pesticides should be considered when assessing the impact of synthetic and natural pesticides, while the promotion of alternative agronomical practices is needed to decrease the use of agrochemicals. Potential alternative solutions include camo-cropping, exogenous application of phytochemicals that are pest-suppressing or -repelling and/or attractive to carnivorous arthropods and other pest natural enemies, and nano-technological innovations. Moreover, to facilitate tackling of pesticide resistance in poorer countries, less technology-demanding and low-cost practices are needed. These include mixed cropping systems, diversification of cultures, use of 'push-pull cropping', incorporation of flower strips into cultivations, modification of microenvironment, and application of beneficial microorganisms and insects. However, there are still numerous open questions, and more research is needed to address the ecological and environmental effects of many of these potential solutions, with special reference to trophic webs.
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Affiliation(s)
- Evgenios Agathokleous
- Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu, China; Research Center for Global Changes and Ecosystem Carbon Sequestration & Mitigation, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu, China.
| | - Christian Sonne
- Department of Ecoscience, Aarhus University, Arctic Research Center (ARC), Frederiksborgvej 399, PO Box 358, DK-4000 Roskilde, Denmark; Sustainability Cluster, School of Engineering, University of Petroleum & Energy Studies, Dehradun, Uttarakhand 248007, India
| | - Giovanni Benelli
- Department of Agriculture, Food and Environment, University of Pisa, via del Borghetto 80, 56124 Pisa, Italy
| | - Edward J Calabrese
- Department of Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA 01003, USA
| | - Raul Narciso C Guedes
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil
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Madnay MMY, Obaid WA, Selim S, Mohamed Reyad A, Alsherif EA, Korany SM, Abdel-Mawgoud M, AbdElgawad H. Rhodospirillum sp. JY3: An innovative tool to mitigate the phytotoxic impact of galaxolide on wheat ( Triticum aestivum) and faba bean ( Vicia faba) plants. FRONTIERS IN PLANT SCIENCE 2022; 13:1037474. [PMID: 36466263 PMCID: PMC9710512 DOI: 10.3389/fpls.2022.1037474] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 09/29/2022] [Indexed: 06/17/2023]
Abstract
To date, several studies have considered the phytotoxic impact of cosmetics and personal care products on crop plants. Nonetheless, data are scarce about the toxic impact of galaxolide [hexahydro-hexamethyl cyclopentabenzopyran (HHCB)] on the growth, physiology, and biochemistry of plants from different functional groups. To this end, the impact of HHCB on biomass, photosynthetic efficiency, antioxidant production, and detoxification metabolism of grass (wheat) and legume (faba bean) plants has been investigated. On the other hand, plant growth-promoting bacteria (PGPB) can be effectively applied to reduce HHCB phytotoxicity. HHCB significantly reduced the biomass accumulation and the photosynthetic machinery of both crops, but to more extent for wheat. This growth reduction was concomitant with induced oxidative damage and decreased antioxidant defense system. To mitigate HHCB toxicity, a bioactive strain of diazotrophic plant growth-promoting Rhodospirillum sp. JY3 was isolated from heavy metal-contaminated soil in Jazan, Kingdom of Saudi Arabia, and applied to both crops. Overall, Rhodospirillum mitigated HHCB-induced stress by differently modulating the oxidative burst [malondialdehyde (MDA), hydrogen peroxide (H2O2), and protein oxidation] in both wheat and faba beans. This alleviation was coincident with improvement in plant biomass and photosynthetic efficiency, particularly in wheat crops. Considering the antioxidant defense system, JY3 augmented the antioxidants in both wheat and faba beans and the detoxification metabolism under HHCB stress conditions. More interestingly, inoculation with JY3 further enhanced the tolerance level of both wheat and faba beans against contamination with HHCB via quenching the lignin metabolism. Overall, this study advanced our understanding of the physiological and biochemical mechanisms underlying HHCB stress and mitigating its impact using Rhodospirillum sp. JY3, which may strikingly reduce the environmental risks on agriculture sustainability.
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Affiliation(s)
- Mahmoud M. Y. Madnay
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, Egypt
- Biology Department, College of Science, Taibah University, Al-Madinah Al-Munwarah, Saudi Arabia
| | - Wael A. Obaid
- Biology Department, College of Science, Taibah University, Al-Madinah Al-Munwarah, Saudi Arabia
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, Saudi Arabia
| | - Ahmed Mohamed Reyad
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni‒Suef, Egypt
- Biology Department, Faculty of Science, Jazan University, Jazan, Saudi Arabia
| | - Emad A. Alsherif
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni‒Suef, Egypt
- Biology Department, College of Science and Arts at Khulis, University of Jeddah, Riyadh, Saudi Arabia
| | - Shereen Magdy Korany
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | | | - Hamada AbdElgawad
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni‒Suef, Egypt
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium
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Stachowiak W, Smolibowski M, Kaczmarek DK, Rzemieniecki T, Niemczak M. Toward revealing the role of the cation in the phytotoxicity of the betaine-based esterquats comprising dicamba herbicide. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 845:157181. [PMID: 35817095 DOI: 10.1016/j.scitotenv.2022.157181] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/27/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
In this study, two homologous series of esterquats comprising alkyl (from ethyl to octadecyl) betainate cations and bromide as well as dicamba anions were successfully synthesized, starting from a renewable raw material - glycine betaine. Due to the favorable octanol-water partition coefficient and utilization of biodegradable cations of natural origin, synthesized esterquats can be considered promising alternatives to currently applied dicamba-based formulations. In addition, the obtained results allowed us to verify whether the organic cations in quaternary ammonium salts containing herbicidally active anions (such as dicamba) play the role of biologically inactive adjuvants that only enhance the efficiency of the active ingredient or if they simultaneously exhibit a significant degree of phytotoxicity. Analysis of the influence of alkyl betainate esterquats containing nonherbicidal (bromide) anions on seedlings of white mustard revealed that alkyl betainate cations promote the germination of white mustard seeds; however, the subsequent growth of the seedlings was significantly inhibited. Further studies performed on white mustard and cornflower plants in a stage of 4-6 leaves allowed us to conclude that in the case of sensitive plants, the high phytotoxicity can be attributed to the presence of the dicamba anion, whereas for more resistant plants the additional influence of the cation on the phytotoxic effect is visible. Esterquats comprising a dodecyl substituent or longer had high surface active properties. Nonetheless, their contact angle values were not correlated with phytotoxicity data, indicating an additional influence of the cation on this stage of plant development. Interestingly, subsequent dose-response experiments conducted for two selected dicamba-based products confirmed that the greatest phytotoxicity was expressed by compounds containing a decyl substituent.
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Affiliation(s)
- Witold Stachowiak
- Department of Chemical Technology, Poznan University of Technology, Poznan 60-965, Poland
| | - Mikołaj Smolibowski
- Faculty of Computing and Telecommunications, Poznan University of Technology, Poznan 60-965, Poland
| | | | - Tomasz Rzemieniecki
- Department of Chemical Technology, Poznan University of Technology, Poznan 60-965, Poland
| | - Michał Niemczak
- Department of Chemical Technology, Poznan University of Technology, Poznan 60-965, Poland.
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Mendoza NGA, Mercado SAS. Cytogenotoxicity of fifth-generation quaternary ammonium using three plant bioindicators. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 95:103972. [PMID: 36089239 DOI: 10.1016/j.etap.2022.103972] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 09/01/2022] [Accepted: 09/06/2022] [Indexed: 06/15/2023]
Abstract
The investigation aimed to determine the cytogenotoxic effect of fifth-generation quaternary ammonium using three plant species as bioindicators. Bulbs of A. cepa and seeds of L. culinaris and P. sativum were exposed to different concentrations of fifth-generation quaternary ammonium and a control solution of distilled water for 72 h. The results showed that the A. cepa bioindicator presented the greatest reduction in root length at 50 mg L-1 and no mitotic index at 40 and 50 mg L-1, reaching 100% mitotic inhibition. Cell abnormalities were present among the three bioindicator species, where the highest index of micronuclei occurred at 50 mg L-1, being A. cepa the bioindicator with the highest relative rate of abnormality (25.28%). It was concluded that fifth-generation quaternary ammonium, in all treatments, caused a cytogenotoxic effect on the apical meristematic cells of the three species, A. cepa was the most sensitive species.
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Affiliation(s)
| | - Seir Antonio Salazar Mercado
- Departamento de Biología, Universidad Francisco de Paula Santander, Avenida Gran Colombia No. 12E-96B, Colsag, San José de Cúcuta, Colombia.
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8
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Ji QT, Hu DK, Mu XF, Tian XX, Zhou L, Yao S, Wang XH, Xiang SZ, Ye HJ, Fan LJ, Wang PY. Cucurbit[7]uril-Mediated Supramolecular Bactericidal Nanoparticles: Their Assembly Process, Controlled Release, and Safe Treatment of Intractable Plant Bacterial Diseases. NANO LETTERS 2022; 22:4839-4847. [PMID: 35667033 DOI: 10.1021/acs.nanolett.2c01203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A safe, biocompatible, and stimuli-responsive cucurbit[7]uril-mediated supramolecular bactericidal nanoparticle was fabricated by encapsulating a highly bioactive carbazole-decorated imidazolium salt (A1, EC50 = 0.647 μg/mL against phytopathogen Xanthomonas oryzae pv oryzae) into the host cucurbit[7]uril (CB[7]), thereby leading to self-assembled topographies from microsheets (A1) to nanospheroidal architectures (A1@CB[7]). The assembly behaviors were elucidated by acquired single-crystal structures, 1H NMR, ITC, and X-ray powder diffraction experiments. Complex A1@CB[7] displayed lower phytotoxicity and could efficiently switch on its potent antibacterial ability via introducing a simple competitor 1-adamantanamine hydrochloride (AD). In vivo antibacterial trials against rice bacterial blight revealed that A1@CB[7] could relieve the disease symptoms after being triggered by AD and provide a workable control efficiency of 42.6% at 100 μg/mL, which was superior to bismerthiazol (33.4%). These materials can provide a viable platform for fabricating diverse stimuli-responsive supramolecular bactericides for managing bacterial infections with improved safety.
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Affiliation(s)
- Qing-Tian Ji
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - De-Kun Hu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Xian-Fu Mu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Xiao-Xue Tian
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Li Zhou
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Si Yao
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Xiao-Hui Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Shu-Zhen Xiang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Hao-Jie Ye
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Li-Jun Fan
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
| | - Pei-Yi Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for R&D of Fine Chemicals of Guizhou University, Guiyang 550025, China
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Yang Y, Dong R, Zhang S, Geng J, Wang F, Liu S, Tao L, Li W, Chen C, Qian Z. A microfluidic system for viability determination of microalgae upon disinfectant treatment under continuous flow. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 816:151615. [PMID: 34774954 DOI: 10.1016/j.scitotenv.2021.151615] [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: 07/27/2021] [Revised: 11/05/2021] [Accepted: 11/07/2021] [Indexed: 06/13/2023]
Abstract
The extensive use of quaternary ammonium compounds (QACs) has raised concerns regarding their environmental fate and potential risks to the ecosystem. As sensitive pollution indicators, green microalgae could readily monitor the aquatic toxicity of QACs as reflective of the changes in cell viability. Recent microfluidic-based systems have been designed for environmental biomonitoring and ecotoxicity studies while overall information of cell viability cannot be directly visualized under flowing conditions. In the present study, we developed a multifunctional microfluidic platform with the integration of analytical techniques including laser speckle contrast imaging and fluorescence spectroscopy for monitoring algal activity in response to QAC treatment. The biocidal efficiency of a representative QAC benzalkonium bromide (BAB) on a typical aquatic algae Chlorella vulgaris was determined by collecting the bio-speckles and chlorophyll autofluorescence in real-time, where dose-dependent and time-dependent decrease of algal growth was found with the increase of BAB concentration and interaction time. The integrated system was capable of rapid detection of the aquatic toxicity of QACs along with macroscopical visualization of algal activities under flowing conditions in time-course, which could be extended to future implementation for broad ecotoxicity analysis of versatile environmental samples.
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Affiliation(s)
- Yamin Yang
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
| | - Rui Dong
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Shu Zhang
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Jinfa Geng
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Feilong Wang
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Sijia Liu
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Ling Tao
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Weitao Li
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Chunxiao Chen
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Zhiyu Qian
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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Su Y, Cheng Z, Hou Y, Lin S, Gao L, Wang Z, Bao R, Peng L. Biodegradable and conventional microplastics posed similar toxicity to marine algae Chlorella vulgaris. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2022; 244:106097. [PMID: 35085953 DOI: 10.1016/j.aquatox.2022.106097] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 01/11/2022] [Accepted: 01/21/2022] [Indexed: 06/14/2023]
Abstract
It has been demonstrated that some conventional microplastics (CMPs) have toxicities to organisms, however, whether biodegradable microplastics (BMPs) have similar potential risks to marine ecosystems remains to be elucidated. Therefore, this study aimed to investigate i) the effects of CMPs (i. e., micro-sized polyethylene (mPE) and polyamide (mPA)) on marine algae Chlorella vulgaris; and ii) the potential effects of BMPs (i.e., micro-sized polylactic acid (mPLA) and polybutylene succinate (mPBS)) on C. vulgaris. The results showed that either CMPs or BMPs inhibited the growth of microalgae compared with the control. The maximum inhibition ratio of the four types of MPs on C. vulgaris were 47.24% (mPE, 1 000 mg/L), 40.36% (mPA, 100 mg/L), 47.95% (mPLA, 100 mg/L) and 34.25% (mPBS, 100 mg/L), respectively. Among them, mPLA showed the strongest inhibitory effect on the growth of C. vulgaris. Interestingly, the MPs can stimulate the contents of pigments (e.g., chlorophyll a, chlorophyll b, and carotenoid), which may be acted as cellular defense to the stress induced by MPs. The results also showed that MPs stimulated the production of EPS. Under the investigated condition, the strongest inhibition on C. vulgaris was induced by mPLA, and followed by mPE, mPA, and mPBS. It was found that the factors such as the physicochemical properties of MPs (e.g., shading effect, the roughness of surface, the increase in potential), the chemical changes (i.e., the release of additives, the increase of oxidative stress) contributed to the inhibitory effects of MPs on microalgae, but the deciding factor remains to be further systematically explored.
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Affiliation(s)
- Yuanyuan Su
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou 570228, China
| | - Zhiruo Cheng
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou 570228, China
| | - Yipeng Hou
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou 570228, China
| | - Shengyou Lin
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou 570228, China
| | - Liu Gao
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou 570228, China
| | - Zezheng Wang
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou 570228, China
| | - Ruiqi Bao
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou 570228, China
| | - Licheng Peng
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou 570228, China.
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11
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Agathokleous E, Barceló D, Iavicoli I, Tsatsakis A, Calabrese EJ. Disinfectant-induced hormesis: An unknown environmental threat of the application of disinfectants to prevent SARS-CoV-2 infection during the COVID-19 pandemic? ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118429. [PMID: 34743965 PMCID: PMC8553406 DOI: 10.1016/j.envpol.2021.118429] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 05/02/2023]
Abstract
Massive additional quantities of disinfectants have been applied during the COVID-19 pandemic as infection preventive and control measures. While the application of disinfectants plays a key role in preventing the spread of SARS-CoV-2 infection, the effects of disinfectants applied during the ongoing pandemic on non-target organisms remain unknown. Here we collated evidence from multiple studies showing that chemicals used for major disinfectant products can induce hormesis in various organisms, such as plants, animal cells, and microorganisms, when applied singly or in mixtures, suggesting potential ecological risks at sub-threshold doses that are normally considered safe. Among other effects, sub-threshold doses of disinfectant chemicals can enhance the proliferation and pathogenicity of pathogenic microbes, enhancing the development and spread of drug resistance. We opine that hormesis should be considered when evaluating the effects and risks of such disinfectants, especially since the linear-no-threshold (LNT) and threshold dose-response models cannot identify or predict their effects.
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Affiliation(s)
- Evgenios Agathokleous
- Department of Ecology, School of Applied Meteorology, Nanjing University of Information Science and Technology (NUIST), Ningliu Rd. 219, Nanjing, Jiangsu, 210044, China.
| | - Damià Barceló
- Institute of Environmental Assessment and Water Research, IDAEA-CSIC, C/ Jordi Girona 18-26, 08034, Barcelona, Spain; Catalan Institute for Water Research, ICRA-CERCA, Emili Grahit 101, 17003, Girona, Spain
| | - Ivo Iavicoli
- Department of Public Health, Section of Occupational Medicine, University of Naples Federico II, Naples, 80131, Italy
| | | | - Edward J Calabrese
- Department of Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA, 01003, USA
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12
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Smith SL, Campos MGN, Ozcan A, Mendis HC, Young M, Myers ME, Atilola M, Doomra M, Thwin Z, Johnson EG, Santra S. Multifunctional Surface, Subsurface, and Systemic Therapeutic (MS3T) Formulation for the Control of Citrus Canker. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:10807-10818. [PMID: 34505777 DOI: 10.1021/acs.jafc.1c03323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A multifunctional surface, subsurface and systemic therapeutic (MS3T) formulation comprised of two bactericides, both didecyldimethylammonium chloride (DDAC) and a zinc (Zn)-chelate, was developed as an alternative to copper pesticides for crop protection. Agricultural grade chemicals were used to prepare MS3T formulations. Minimal inhibitory concentration (MIC) was determined to be tested in vitro against Xanthomonas alfalfae subsp. citrumelonis (herein called Xa), Escherichia coli (E. coli), and Pseudomonas syringae (Ps). Assessment of the phytotoxic potential was carried out on tomato under greenhouse conditions. Moreover, field trials were conducted during three consecutive years on grapefruit (Chrysopelea paradise) groves to evaluate efficacy against citrus canker (Xanthomonas citri subsp. citri), scab (Elsinoe fawcetti), and melanose (Diaporthe citri). In addition to disease control, improvements to both fruit yield and quality were observed likely due to the nutritional activity of MS3T via the sustained release of plant nutrients (Zn and nitrogen). Zn residues of leaf tissues were analyzed via atomic absorption spectroscopy (AAS) at various time points before and after MS3T foliar applications throughout the duration of the 2018 field trial. Field trial results demonstrated MS3T to be an effective alternative to copper (Cu)-based formulations for the control of citrus canker.
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Affiliation(s)
| | | | | | | | | | - Monty E Myers
- Indian River Research and Education Center, University of Florida, 2199 South Rock Road, Fort Pierce, Florida 34945, United States
| | | | | | | | - Evan G Johnson
- Citrus Research and Education Center, University of Florida, 700 Experiment Station Road, Lake Alfred, Florida 33850, United States
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13
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Dewey HM, Jones JM, Keating MR, Budhathoki-Uprety J. Increased Use of Disinfectants During the COVID-19 Pandemic and Its Potential Impacts on Health and Safety. ACS CHEMICAL HEALTH & SAFETY 2021. [DOI: 10.1021/acs.chas.1c00026] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Hannah M. Dewey
- Department of Textile Engineering, Chemistry and Science, Wilson College of Textiles, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Jaron M. Jones
- Department of Textile Engineering, Chemistry and Science, Wilson College of Textiles, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Mike R. Keating
- Department of Textile Engineering, Chemistry and Science, Wilson College of Textiles, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Januka Budhathoki-Uprety
- Department of Textile Engineering, Chemistry and Science, Wilson College of Textiles, North Carolina State University, Raleigh, North Carolina 27695, United States
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14
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Rai-Kalal P, Tomar RS, Jajoo A. Seed nanopriming by silicon oxide improves drought stress alleviation potential in wheat plants. FUNCTIONAL PLANT BIOLOGY : FPB 2021; 48:905-915. [PMID: 34366002 DOI: 10.1071/fp21079] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 04/06/2021] [Indexed: 06/13/2023]
Abstract
The present study explored the effectiveness of SiO2 nanoparticles (NPs) as seed priming agent (15 mg L-1) to improve drought tolerance in the wheat cultivar HI 1544. Seed germination studies showed significant enhancement in the rate of seed germination, seedling growth and vigour, seed water uptake, and amylase activity in nanoprimed (NP) seeds compared with unprimed (UP) seeds. Pot experiments using wheat plants subjected to drought stress showed that SiO2 nanopriming enhanced the ability of wheat plants to withstand water deficit conditions by balancing the production of reactive oxygen species and the activity of enzymatic antioxidants like peroxidase, catalase, and superoxide dismutase. Investigations of photosynthetic parameters showed that under drought conditions, nanoprimed plants had a higher number of active reaction centres, high absorbance, trapping, and electron transport rates compared with unprimed plants. These results suggest the effects of silicon nanopriming in enhancing drought tolerance in wheat by alleviating drought induced inhibition of plant photosynthetic machinery and maintaining biochemical balance, ultimately resulting in an increase in biomass production. Results revealed the use of silicon oxide nanopriming to be a good option to increase drought tolerance in wheat plants.
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Affiliation(s)
| | - Rupal S Tomar
- School of Life Sciences, Devi Ahilya University, Indore, India
| | - Anjana Jajoo
- School of Life Sciences, Devi Ahilya University, Indore, India; and School of Biotechnology, Devi Ahilya University, Indore, India; and Corresponding author.
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15
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Ozcan A, Young M, Lee B, Liao YY, Da Silva S, Godden D, Colee J, Huang Z, Mendis HC, Campos MGN, Jones JB, Freeman JH, Paret ML, Tetard L, Santra S. Copper-fixed quat: a hybrid nanoparticle for application as a locally systemic pesticide (LSP) to manage bacterial spot disease of tomato. NANOSCALE ADVANCES 2021; 3:1473-1483. [PMID: 36132859 PMCID: PMC9417342 DOI: 10.1039/d0na00917b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 01/21/2021] [Indexed: 05/31/2023]
Abstract
The development of bacterial tolerance against pesticides poses a serious threat to the sustainability of food production. Widespread use of copper (Cu)-based products for plant disease management has led to the emergence of copper-tolerant pathogens such as Xanthomonas perforans (X. perforans) strains in Florida, which is very destructive to the tomato (Solanum lycopersicum) industry. In this study, we report a hybrid nanoparticle (NP)-based system, coined Locally Systemic Pesticide (LSP), which has been designed for improved efficacy compared to conventional Cu-based bactericides against Cu-tolerant X. perforans. The silica core-shell structure of LSP particles makes it possible to host ultra-small Cu NPs (<10 nm) and quaternary ammonium (Quat) molecules on the shell. The morphology, release of Cu and Quat, and subsequent in vitro antimicrobial properties were characterized for LSP NPs with core diameters from 50 to 600 nm. A concentration of 4 μg mL-1 (Cu): 1 μg mL-1 (Quat) was found to be sufficient to inhibit the growth of Cu-tolerant X. perforans compared to 100 μg mL-1 (metallic Cu) required with standard Kocide 3000. Wetting properties of LSP exhibited contact angles below 60°, which constitutes a significant improvement from the 90° and 85° observed with water and Kocide 3000, respectively. The design was also found to provide slow Cu release to the leaves upon water washes, and to mitigate the phytotoxicity of water-soluble Cu and Quat agents. With Cu and Quat bound to the LSP silica core-shell structure, no sign of phytotoxicity was observed even at 1000 μg mL-1 (Cu). In greenhouse and field experiments, LSP formulations significantly reduced the severity of bacterial spot disease compared to the water control. Overall, the study highlights the potential of using LSP particles as a candidate for managing tomato bacterial spot disease and beyond.
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Affiliation(s)
- Ali Ozcan
- Department of Chemistry, University of Central Florida Orlando FL 32826 USA +1 407-882-2848
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
- Vocational School of Technical Sciences, Karamanoglu Mehmetbey University 70200 Karaman Turkey
| | - Mikaeel Young
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
- Burnett School of Biomedical Sciences, University of Central Florida Orlando FL 32826 USA
| | - Briana Lee
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
| | - Ying-Yu Liao
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
- North Florida Research and Education Center, University of Florida Quincy FL 32351 USA
| | - Susannah Da Silva
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
| | - Dylan Godden
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
| | - James Colee
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
| | - Ziyang Huang
- Department of Chemistry, University of Central Florida Orlando FL 32826 USA +1 407-882-2848
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
| | - Hajeewaka C Mendis
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
| | - Maria G N Campos
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
| | - Jeffrey B Jones
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
| | - Joshua H Freeman
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
| | - Mathews L Paret
- Plant Pathology Department, University of Florida Gainesville FL 32611 USA
- North Florida Research and Education Center, University of Florida Quincy FL 32351 USA
| | - Laurene Tetard
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
- Department of Physics, University of Central Florida Orlando FL 32826 USA
| | - Swadeshmukul Santra
- Department of Chemistry, University of Central Florida Orlando FL 32826 USA +1 407-882-2848
- NanoScience Technology Center, University of Central Florida Orlando FL 32826 USA
- Burnett School of Biomedical Sciences, University of Central Florida Orlando FL 32826 USA
- Department of Materials Science and Engineering, University of Central Florida Orlando FL 32826 USA
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16
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Hora PI, Pati SG, McNamara PJ, Arnold WA. Increased Use of Quaternary Ammonium Compounds during the SARS-CoV-2 Pandemic and Beyond: Consideration of Environmental Implications. ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS 2020; 7:622-631. [PMID: 37566314 PMCID: PMC7341688 DOI: 10.1021/acs.estlett.0c00437] [Citation(s) in RCA: 190] [Impact Index Per Article: 47.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/25/2020] [Accepted: 06/26/2020] [Indexed: 05/17/2023]
Abstract
Quaternary ammonium compounds (QACs) are active ingredients in over 200 disinfectants currently recommended by the U.S. EPA for use to inactivate the SARS-CoV-2 (COVID-19) virus. The amounts of these compounds used in household, workplace, and industry settings has very likely increased, and usage will continue to be elevated given the scope of the pandemic. QACs have been previously detected in wastewater, surface waters, and sediments, and effects on antibiotic resistance have been explored. Thus, it is important to assess potential environmental and engineering impacts of elevated QAC usage, which may include disruption of wastewater treatment unit operations, proliferation of antibiotic resistance, formation of nitrosamine disinfection byproducts, and impacts on biota in surface waters. The threat caused by COVID-19 is clear, and a reasonable response is elevated use of QACs to mitigate spread of infection. Exploration of potential effects, environmental fate, and technologies to minimize environmental releases of QACs, however, is warranted.
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Affiliation(s)
- Priya I. Hora
- Department of Civil, Environmental, and Geo-
Engineering, University of Minnesota − Twin Cities, 500
Pillsbury Drive SE, Minneapolis, Minnesota 55455, United States
| | - Sarah G. Pati
- Department of Environmental Sciences,
University of Basel, Bernoullistrasse 30, 4056 Basel,
Switzerland
| | - Patrick J. McNamara
- Department of Civil, Construction, and Environmental
Engineering, Marquette University, P.O. Box 1881, Milwaukee,
Wisconsin 53233, United States
| | - William A. Arnold
- Department of Civil, Environmental, and Geo-
Engineering, University of Minnesota − Twin Cities, 500
Pillsbury Drive SE, Minneapolis, Minnesota 55455, United States
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17
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Lutterbeck CA, Machado ÊL, Sanchez-Barrios A, Silveira EO, Layton D, Rieger A, Lobo EA. Toxicity evaluation of hospital laundry wastewaters treated by microbial fuel cells and constructed wetlands. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 729:138816. [PMID: 32361440 DOI: 10.1016/j.scitotenv.2020.138816] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/05/2020] [Accepted: 04/17/2020] [Indexed: 05/15/2023]
Abstract
Hospital laundries generate high wastewater volumes with the presence of several contaminants. Nevertheless, few studies have investigated the toxicity of these effluents and looked for treatment alternatives that might reduce this eventual toxicity. So, the present study assessed the performance of an integrated system combining a microbial fuel cell (MBFC) and a constructed wetland (CW) to reduce toxic effects of wastewaters generated at a hospital laundry. After collection, raw effluents remained 7 days at the first unit (MBFC) of integrated system. Afterward, they were transferred to the second unit (CW) unit where remained more 7 days totaling a hydraulic detention time of 14 days. The toxicity evaluation involved three different organisms: Daphnia magna (acute ecotoxicity), Lactuca sativa (phytotoxicity) and Allium cepa (phytotoxicity, cytotoxicity, mutagenicity, and genotoxicity). Got results revealed an extremely acute ecotoxicity against D. magna, high phytotoxic effects in the L. sativa and A. cepa assays, and genotoxicity in the A. cepa assay for the untreated effluents. Furthermore, no significant incidence of micronuclei was observed in the raw wastewaters. Regarding the treatment, after the first stage, it was possible to verify that MBFC reduced the toxicity of the wastewaters only in some tested assays (endpoints) while after the CW (second stage) the effluents presented a complete absence of toxicity of the investigated bioassays. Therefore, the use of the integrated system combining two environmentally friendly technologies can be considered promising, since both MBFC and CW presented a complimentary effect with excellent results regarding the reduction of the overall toxicity of hospital laundry wastewaters.
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Affiliation(s)
- Carlos Alexandre Lutterbeck
- Graduate Program in Environmental Technology, Universidade de Santa Cruz do Sul - UNISC, Av. Independência, 2293, 96815-900 Santa Cruz do Sul, Rio Grande do Sul, Brazil.
| | - Ênio Leandro Machado
- Graduate Program in Environmental Technology, Universidade de Santa Cruz do Sul - UNISC, Av. Independência, 2293, 96815-900 Santa Cruz do Sul, Rio Grande do Sul, Brazil.
| | - Andrea Sanchez-Barrios
- Graduate Program in Environmental Technology, Universidade de Santa Cruz do Sul - UNISC, Av. Independência, 2293, 96815-900 Santa Cruz do Sul, Rio Grande do Sul, Brazil; Laboratory of Biotechnology and Genetics, Department of Biology and Pharmacy, University of Santa Cruz do Sul, Santa Cruz do Sul, RS, Brazil
| | - Elizandro Oliveira Silveira
- Laboratory of Ecotechnology and Applied Limnology, Institute of Hydraulic Research - IPH, Federal University of Rio Grande do Sul - UFRGS, Porto Alegre, RS, Brazil
| | - Daniela Layton
- Laboratory of Biotechnology and Genetics, Department of Biology and Pharmacy, University of Santa Cruz do Sul, Santa Cruz do Sul, RS, Brazil; Biology Program, Universidad del Quindío, Carrera 15, calle 12 Norte, Armenia, Quindío, Colombia
| | - Alexandre Rieger
- Laboratory of Biotechnology and Genetics, Department of Biology and Pharmacy, University of Santa Cruz do Sul, Santa Cruz do Sul, RS, Brazil
| | - Eduardo Alcayaga Lobo
- Graduate Program in Environmental Technology, Universidade de Santa Cruz do Sul - UNISC, Av. Independência, 2293, 96815-900 Santa Cruz do Sul, Rio Grande do Sul, Brazil
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18
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Agathokleous E, Feng Z, Peñuelas J. Chlorophyll hormesis: Are chlorophylls major components of stress biology in higher plants? THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 726:138637. [PMID: 32330746 DOI: 10.1016/j.scitotenv.2020.138637] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 04/09/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
High oxidative stress inhibits the synthesis and accumulation of chlorophylls, the pigments that absorb and use light. We collated evidence from a diverse array of studies demonstrating that chlorophyll concentration increases in response to low-level stress and decreases in response to high-level stress. These observations were from 33 species, >20 stress-inducing agents, 43 experimental setups and 177 dose responses, suggesting generality. Data meta-analysis indicated that the maximum stimulatory response did not differ significantly among species and agents. The stimulatory response maximized within a defined time window (median = 150-160% of the control response), after which it decreased but remained elevated (median = 120-130% of control response). The common stimulation of chlorophylls by low-level stress indicates that chlorophylls are major components of stress biology, with their increased concentration at low-level stress suggestive of their requirement for normal functioning and health. Increased chlorophyll concentration in response to low-level stress may equip systems with an enhanced capacity for defense against high-level (health-threatening) challenges within defined time windows, such as pollution or herbivores. These developments have wide-ranging implications in ecophysiology, biotic interactions and evolution.
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Affiliation(s)
- Evgenios Agathokleous
- Institute of Ecology, Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China.
| | - ZhaoZhong Feng
- Institute of Ecology, Key Laboratory of Agrometeorology of Jiangsu Province, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China
| | - Josep Peñuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, 08193 Bellaterra, Catalonia, Spain; CREAF, 08193 Cerdanyola del Vallès, Catalonia, Spain
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19
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Lin Q, Zhou C, Chen L, Li Y, Huang X, Wang S, Qiu R, Tang C. Accumulation and associated phytotoxicity of novel chlorinated polyfluorinated ether sulfonate in wheat seedlings. CHEMOSPHERE 2020; 249:126447. [PMID: 32208216 DOI: 10.1016/j.chemosphere.2020.126447] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 03/06/2020] [Accepted: 03/06/2020] [Indexed: 05/27/2023]
Abstract
Novel alternatives of perfluorooctane sulfonate (PFOS), chlorinated polyfluorinated ether sulfonates (Cl-PFAESs) are increasingly being detected in the aquatic and terrestrial environment. Previous studies mainly focused on aquatic biota; however, the knowledge about the ecotoxicological risk they pose to terrestrial plants was still lacking. In this study, the accumulation of two Cl-PFAES (6:2 and 8:2 Cl-PFAES) and PFOS in wheat seedlings at environmentally relevant levels (50 and 100 μg L-1) was investigated. Concentrations of Cl-PFAESs in the roots were an order of magnitude higher than those in shoots, indicating that they were primarily accumulated in the roots. The values of root and shoot bioconcentration factor was comparable between 6:2 Cl-PFAES and PFOS. However, these indexes of 8:2 Cl-PFAES were 42-91% higher and 70-76% lower than PFOS, respectively. As a result, 6:2 Cl-PFAES had a similar accumulation pattern as PFOS, whereas 8:2 Cl-PFAES was predominantly restricted to the roots, which might be attributed to their hydrophobicity and carbon chain length. In addition, at 250 mg L-1 of Cl-PFAESs, plant biomass and pigment content were 24-30% and 0.4-18%, respectively, which were lower than those of PFOS. As compared with PFOS, Cl-PFAESs induced higher levels of root membrane permeability, reactive oxygen species and malondialdehyde content, as well as reduced the activities of antioxidant enzymes and glutathione content. These suggested the occurrence of a severer oxidative damage and the breakdown of the antioxidant defence system in wheat cells. Therefore, we conclude that Cl-PFAESs might pose a higher potential threat to the environment than PFOS.
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Affiliation(s)
- Qingqi Lin
- School of Geography and Planning, Sun Yat-sen University, Guangzhou, China
| | - Can Zhou
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, China
| | - Lei Chen
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, China
| | - Yafei Li
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, China
| | - Xiongfei Huang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology (Sun Yat-sen University), Guangzhou, China
| | - Shizhong Wang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology (Sun Yat-sen University), Guangzhou, China; Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation (Sun Yat-sen University), Guangzhou, China.
| | - Rongliang Qiu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, China; Guangdong Laboratory for Lingnan Modern Agriculture (South China Agriculture University), Guangzhou, China
| | - Changyuan Tang
- School of Geography and Planning, Sun Yat-sen University, Guangzhou, China; School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology (Sun Yat-sen University), Guangzhou, China; Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation (Sun Yat-sen University), Guangzhou, China.
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