1
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Wang Z, Zhao C, Lu B, Zhang H, Zhao Y. Attenuation of antibiotics from simulated swine wastewater using different microalgae-based systems. BIORESOURCE TECHNOLOGY 2023; 388:129796. [PMID: 37742816 DOI: 10.1016/j.biortech.2023.129796] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 09/19/2023] [Accepted: 09/19/2023] [Indexed: 09/26/2023]
Abstract
Antibiotic misuse are potentially harmful to the environment and human health. Four algal symbionts were constructed using Chlorella vulgaris, endophytic bacterium and Clonostachys rosea (C. rosea) as the biomaterials. The growth, photosynthetic activity, and antibiotic removal efficiency of symbiont under different initial antibiotic concentrations was analyzed. The results showed that the microalgae-bacteria-fungi symbiont had a maximum growth rate of 0.307 ± 0.030 d-1 and achieved 99.35 ± 0.47%, 81.06 ± 7.83%, and 79.15 ± 7.26% removal of oxytetracycline (OTC), sulfadimethazine (SM2), and ciprofloxacin hydrochloride (CPFX), respectively, at an initial antibiotic concentration of 0.25 mg/L. C. rosea has always existed as a biocontrol fungus. In this study, it was innovatively used to construct algal symbionts and used for antibiotic wastewater treatment with a high efficiency. The results contribute to the development of appropriate bioaugmentation strategies and the design of an algal symbiont process for the treatment of antibiotic-containing wastewater.
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Affiliation(s)
- Zhengfang Wang
- Suzhou Institute of Trade & Commerce, Suzhou 215009, China
| | - Chunzhi Zhao
- School of engineering, Hangzhou Normal University, Hangzhou 311121, China; School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201400, China
| | - Bei Lu
- School of Ecological Technology & Engineering, Shanghai Institute of Technology, Shanghai 201400, China
| | - Hui Zhang
- College of data Science, Jiaxing University, Jiaxing 314001, China
| | - Yongjun Zhao
- School of engineering, Hangzhou Normal University, Hangzhou 311121, China.
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2
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Gómez-Martínez D, Bengtson J, Nilsson AK, Clarke AK, Nilsson RH, Kristiansson E, Corcoll N. Phenotypic and transcriptomic acclimation of the green microalga Raphidocelis subcapitata to high environmental levels of the herbicide diflufenican. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 875:162604. [PMID: 36878298 DOI: 10.1016/j.scitotenv.2023.162604] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
Herbicide pollution poses a worldwide threat to plants and freshwater ecosystems. However, the understanding of how organisms develop tolerance to these chemicals and the associated trade-off expenses are largely unknown. This study aims to investigate the physiological and transcriptional mechanisms underlying the acclimation of the green microalgal model species Raphidocelis subcapitata (Selenastraceae) towards the herbicide diflufenican, and the fitness costs associated with tolerance development. Algae were exposed for 12 weeks (corresponding to 100 generations) to diflufenican at the two environmental concentrations 10 and 310 ng/L. The monitoring of growth, pigment composition, and photosynthetic performance throughout the experiment revealed an initial dose-dependent stress phase (week 1) with an EC50 of 397 ng/L, followed by a time-dependent recovery phase during weeks 2 to 4. After week 4, R. subcapitata was acclimated to diflufenican exposure with a similar growth rate, content of carotenoids, and photosynthetic performance as the unexposed control algae. This acclimation state of the algae was explored in terms of tolerance acquisition, changes in the fatty acids composition, diflufenican removal rate, cell size, and changes in mRNA gene expression profile, revealing potential fitness costs associated with acclimation, such as up-regulation of genes related to cell division, structure, morphology, and reduction of cell size. Overall, this study demonstrates that R. subcapitata can quickly acclimate to environmental but toxic levels of diflufenican; however, the acclimation is associated with trade-off expenses that result in smaller cell size.
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Affiliation(s)
- Daniela Gómez-Martínez
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.
| | - Johanna Bengtson
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Anders K Nilsson
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Adrian K Clarke
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Rolf Henrik Nilsson
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
| | - Erik Kristiansson
- Department of Mathematical Sciences, Chalmers University of Technology and University of Gothenburg, Gothenburg, Sweden
| | - Natàlia Corcoll
- Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.
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3
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Ghaffar I, Hussain A, Hasan A, Deepanraj B. Microalgal-induced remediation of wastewaters loaded with organic and inorganic pollutants: An overview. CHEMOSPHERE 2023; 320:137921. [PMID: 36682632 DOI: 10.1016/j.chemosphere.2023.137921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 12/26/2022] [Accepted: 01/18/2023] [Indexed: 06/17/2023]
Abstract
The recent surge in industrialization has intensified the accumulation of various types of organic and inorganic pollutants due to the illegal dumping of partially and/or untreated wastewater effluents in the environment. The pollutants emitted by several industries pose serious risk to the environment, animals and human beings. Management and diminution of these hazardous organic pollutants have become an incipient research interest. Traditional physiochemical methods are energy intensive and produce secondary pollutants. So, bioremediation via microalgae has appeared to be an eco-friendly and sustainable technique to curb the adverse effects of organic and inorganic contaminants because microalgae can degrade complex organic compounds and convert them into simpler and non-toxic substances without the release of secondary pollutants. Even some of the organic pollutants can be exploited by microalgae as a source of carbon in mixotrophic cultivation. Literature survey has revealed that use of the latest modification techniques for microalgae such as immobilization (on alginate, carrageena and agar), pigment-extraction, and pretreatment (with acids) have enhaced their bioremedial potential. Moreover, microalgal components i.e., biopolymers and extracellular polymeric substances (EPS) can potentially be exploited in the biosorption of pollutants. Though bioremediation of wastewaters by microalgae is quite well-studied realm but some aspects like structural and functional responses of microalgae toward pollutant derivatives/by-products (formed during biodegradation), use of genetic engineering to improve the tolerance of microalgae against higher concentrations of polluatans, and harvesting cost reduction, and monitoring of parameters at large-scale still need more focus. This review discusses the accumulation of different types of pollutants into the environment through various sources and the mechanisms used by microalgae to degrade commonly occurring organic and inorganic pollutants.
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Affiliation(s)
- Imania Ghaffar
- Applied and Environmental Microbiology Laboratory, Department of Wildlife and Ecology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Ali Hussain
- Applied and Environmental Microbiology Laboratory, Institute of Zoology, University of the Punjab, Lahore, Pakistan.
| | - Ali Hasan
- Applied and Environmental Microbiology Laboratory, Institute of Zoology, University of the Punjab, Lahore, Pakistan
| | - Balakrishnan Deepanraj
- Department of Mechanical Engineering, College of Engineering, Prince Mohammad Bin Fahd University, Al Khobar, Saudi Arabia.
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4
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Dhuldhaj UP, Singh R, Singh VK. Pesticide contamination in agro-ecosystems: toxicity, impacts, and bio-based management strategies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:9243-9270. [PMID: 36456675 DOI: 10.1007/s11356-022-24381-y] [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: 06/29/2021] [Accepted: 11/19/2022] [Indexed: 06/17/2023]
Abstract
Continuous rise in application of pesticides in the agro-ecosystems in order to ensure food supply to the ever-growing population is of greater concern to the human health and the environment. Once entered into the agro-ecosystem, the fate and transport of pesticides is determined largely by the nature of pesticides and the soil attributes, in addition to the soil-inhabiting microbes, fauna, and flora. Changes in the soil microbiological actions, soil properties, and enzymatic activities resulting from pesticide applications are the important factors substantially affecting the soil productivity. Disturbances in the microbial community composition may lead to the considerable perturbations in cycling of major nutrients, metals, and subsequent uptake by plants. Indiscriminate applications are linked with the accumulation of pesticides in plant-based foods, feeds, and animal products. Furthermore, rapid increase in the application of pesticides having long half-life has also been reported to contaminate the nearby aquatic environments and accumulation in the plants, animals, and microbes surviving there. To circumvent the negative consequences of pesticide application, multitude of techniques falling in physical, chemical, and biological categories are presented by different investigators. In the present study, important findings pertaining to the pesticide contamination in cultivated agricultural soils; toxicity on soil microbes, plants, invertebrates, and vertebrates; effects on soil characteristics; and alleviation of toxicity by bio-based management approaches have been thoroughly reviewed. With the help of bibliometric analysis, thematic evolution and research trends on the bioremediation of pesticides in the agro-ecosystems have also been highlighted.
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Affiliation(s)
- Umesh Pravin Dhuldhaj
- School of Life Sciences, Swami Ramanand Teerth Marathwada University, Nanded, 431606, India
| | - Rishikesh Singh
- Department of Botany, Panjab University, Chandigarh, 160014, India
| | - Vipin Kumar Singh
- Department of Botany, K. S. Saket P. G. College, (Affiliated to Dr. Ram Manohar Lohia Avadh University), Ayodhya, 224123, India.
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5
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Buledi JA, Solangi AR, Mallah A, Shah ZUH, Sherazi ST, Shah MR, Hyder A, Ali S. Electrochemical monitoring of isoproturon herbicide using NiO/V2O5/rGO/GCE. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2022. [DOI: 10.1007/s11694-022-01733-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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6
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Liu Q, Gao K, Li L, Yang M, Gao Z, Deng X. Salinity fluctuation influences the toxicity of 1-octyl-3-methylimidazolium chloride ([C 8mim]Cl) to a marine diatom Phaeodactylum tricornutum. MARINE POLLUTION BULLETIN 2022; 185:114379. [PMID: 36435022 DOI: 10.1016/j.marpolbul.2022.114379] [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: 09/06/2022] [Revised: 10/29/2022] [Accepted: 11/13/2022] [Indexed: 06/16/2023]
Abstract
In this work, a marine diatom (Phaeodactylum tricornutum) was exposed to 1-octyl-3-methylimidazolium chloride ([C8mim]Cl) for 96 h at three different salinities (25, 35, and 45 ‰) for investigating their interactive effects. Results showed that values of EC10 and EC50 at 96 h of exposure were 0.29, 1.06, 2.01 μg L-1 and 7.21, 7.71, 7.25 mg L-1 when the salinities were 25, 35, and 45 ‰, respectively, meaning that salinity fluctuation affected the toxicity of [C8mim]Cl to this diatom. Changes in chlorophyll a contents and chlorophyll fluorescence parameters suggested that [C8mim]Cl and salinity fluctuation had a significant interactive effect on the algal photosynthesis. In addition, soluble protein content and activities of antioxidant enzymes in algal cells changed significantly. Increased malondialdehyde contents indicated that the combined stresses could induce excessive production of reactive oxygen species leading to oxidative damage to the algal cells.
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Affiliation(s)
- Qiaoqiao Liu
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, People's Republic of China
| | - Kun Gao
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, People's Republic of China
| | - Linqing Li
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, People's Republic of China
| | - Mengting Yang
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, People's Republic of China
| | - Zheng Gao
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, People's Republic of China
| | - Xiangyuan Deng
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212100, People's Republic of China.
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7
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Qu H, Wang F, Barrett H, Wang B, Han J, Wu J, Huang X, Hu Y, Yu G. Synthetical effect of microplastics and chiral drug amphetamine on a primary food source algae Chlorella pyrenoids. Food Chem Toxicol 2022; 169:113415. [PMID: 36096289 DOI: 10.1016/j.fct.2022.113415] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 08/08/2022] [Accepted: 09/03/2022] [Indexed: 10/31/2022]
Abstract
The biological effects and fate of the chiral illicit drug amphetamine in the presence and absence of microplastics on freshwater algae (Chlorella pyrenoids), including acute toxicity, growth inhibition, photosynthetic pigment content, oxidative stress, lipid peroxidation, and enantioselective fate were assessed. An agglomeration and the shading effects of microplastics in algae suspension were also determined. Microplastics were observed to increase the toxicity of amphetamine to algae and reduce algae cell growth. Exposed Chlorella pyrenoids exhibited a reduced algae cell counts in an agglomeration test, wherein algae cells decreased between 18% and 56% among treatment groups exposed to 5-50 mg L-1 of microplastics. The agglomeration test suggested that microplastics might significantly increase the adverse effect on algae. Furthermore, our experiments demonstrated enantioselective degradation of amphetamine in algae, and demonstrated that the S-enantiomer was preferably degraded by algae cells. Adding microplastics to the algae suspension significantly reduced the enantioselectivity, with an EF value of 0.41 compared with amphetamine-alone group (0.34) after 21 d exposure. These results demonstrated the first evidence of microplastics acting as a vehicle to enhance amphetamine toxicity to Chlorella pyrenoids, as well as provided new insights into the co-effect of microplastics and organic contaminants on food source.
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Affiliation(s)
- Han Qu
- Beijing Laboratory of Environmental Frontier Technology, Beijing Key Laboratory of Emerging Organic Contaminants Control, Tsinghua University, Beijing, 100084, China
| | - Fang Wang
- Beijing Laboratory of Environmental Frontier Technology, Beijing Key Laboratory of Emerging Organic Contaminants Control, Tsinghua University, Beijing, 100084, China
| | - Holly Barrett
- Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada
| | - Bin Wang
- Beijing Laboratory of Environmental Frontier Technology, Beijing Key Laboratory of Emerging Organic Contaminants Control, Tsinghua University, Beijing, 100084, China.
| | - Jiajun Han
- Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6, Canada
| | - Junxue Wu
- Institute of Plant and Environmental Protection, Beijing Academy of Agriculture and Forestry Science, Beijing, 100097, China
| | - Xiaochen Huang
- School of Agriculture, Sun Yat-sen University, Shenzhen, 518107, China
| | - Yongxia Hu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
| | - Gang Yu
- Beijing Laboratory of Environmental Frontier Technology, Beijing Key Laboratory of Emerging Organic Contaminants Control, Tsinghua University, Beijing, 100084, China
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8
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Li C, Fan S, Zhang Y, Zhang X, Luo J, Liu C. Toxicity, bioactivity of triazole fungicide metconazole and its effect on mycotoxin production by Fusarium verticillioides: New perspective from an enantiomeric level. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 828:154432. [PMID: 35278556 DOI: 10.1016/j.scitotenv.2022.154432] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 02/18/2022] [Accepted: 03/05/2022] [Indexed: 06/14/2023]
Abstract
The chiral triazole fungicide metconazole has four stereoisomers, is a broad-spectrum fungicide and is widely used for controlling Fusarium head blight caused by Fusarium species. In this study, systemic assessments of metconazole stereoisomers were performed, including stereoselective toxicity toward the aquatic organism Daphnia magna, fungicidal activity and effects on fumonisin production by the pathogen Fusarium verticillioides (F. verticillioides) in relation to different conditions. The toxicity of metconazole was enantioselective, and there was a 2.1-2.9-fold difference. The activities of superoxide dismutase (SOD) and catalase (CAT) increased and decreased, respectively, after treatment with metconazole stereoisomers, and the differences were observed among the stereoisomers. Among the four stereoisomers, (1S,5R)-metconazole showed the highest fungicidal activity under all assayed conditions, and the differences ranged from 4.4 to 45.2 times. Moreover, metconazole stereoisomers can stereoselectively affect on fumonisin B1 production by F. verticillioides and abiotic factors, such as water activity and temperature, play an important role. Our study provides new insight into metconazole at the stereoisomeric level, including its toxicity, bioactivity, and effect on Fusarium species producing mycotoxins.
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Affiliation(s)
- Chaofeng Li
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Agriculture & Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou 510642, China
| | - Shuai Fan
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Agriculture & Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou 510642, China
| | - Yirong Zhang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Agriculture & Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou 510642, China
| | - Xiangyu Zhang
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Agriculture & Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou 510642, China
| | - Jianjun Luo
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Agriculture & Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou 510642, China.
| | - Chenglan Liu
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Agriculture & Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou 510642, China.
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9
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Meng X, Wang F, Li Y, Deng P, Hu D, Zhang Y. Comparing toxicity and biodegradation of racemic glufosinate and L-glufosinate in green algae Scenedesmus obliquus. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 823:153791. [PMID: 35150682 DOI: 10.1016/j.scitotenv.2022.153791] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 02/06/2022] [Accepted: 02/06/2022] [Indexed: 06/14/2023]
Abstract
Glufosinate-ammonium, a widely used chiral herbicide, has become the focus of attention because of its toxicity toward non-target organisms and its degradation behavior in the environment. With the introduction of L-glufosinate-ammonium products, the toxicity and environmental behavior of rac-glufosinate-ammonium and L-glufosinate-ammonium have become the subject of increasing interest. The overall goal of this study was to investigate the differences in toxicity and biodegradation of rac-glufosinate-ammonium and L-glufosinate-ammonium in an aquatic organism, Scenedesmus obliquus. The toxicity of rac-glufosinate-ammonium and L-glufosinate-ammonium to S. obliquus was compared by measuring EC50, malondialdehyde (MDA) content, protein content and antioxidant enzyme activity. The 96-h EC50 values of rac-glufosinate-ammonium and L-glufosinate-ammonium were 57.22 μg/mL and 25.55 μg/mL, respectively, which indicated that L-glufosinate-ammonium was more toxic to S. obliquus than rac-glufosinate-ammonium. Based on the MDA content, protein content, and antioxidant enzyme (SOD and CAT) activity, we found that L-glufosinate-ammonium could cause more serious oxidative damage than rac-glufosinate-ammonium. The residual amount of glufosinate-ammonium and its metabolites in the culture medium and S. obliquus were determined by HPLC-HRMS. Comparison of glufosinate-ammonium concentrations in algae-free and algae-containing media, showed that glufosinate-ammonium degradation in the S. obliquus system was significantly increased, and the degradation rate of L-glufosinate-ammonium was faster than that of D-glufosinate-ammonium. No enantiomerization was observed for pure L-glufosinate-ammonium treatment. N-acetyl-glufosinate was identified as the main metabolite of glufosinate-ammonium.
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Affiliation(s)
- Xiurou Meng
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, PR China
| | - Fei Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, PR China
| | - Yunfang Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, PR China
| | - Pengyu Deng
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, PR China
| | - Deyu Hu
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, PR China
| | - Yuping Zhang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, PR China.
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10
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Zhai XY, Chen ZJ, Liu J, Zhang N, Yang H. Expression of CYP76C6 Facilitates Isoproturon Metabolism and Detoxification in Rice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:4599-4610. [PMID: 35385284 DOI: 10.1021/acs.jafc.1c08137] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Agricultural chemical residues in farmland and crops is one of the serious public issues that constantly threatens crop production, food security, and human health. Understanding their decay mechanism in crops for accelerating their degradative metabolism is important. In this study, a rice uncharacterized cytochrome P450 gene encoding CYP76C6 was functionally identified in rice exposed to isoproturon (IPU). To verify the role of CYP76C6 in rice resistance to IPU toxicity, CYP76C6 overexpression (OEs) and knockout mutant rice by CRISPR/Cas9 were generated through genetic transformation and gene-editing technologies. Assessment of growth and physiological responses revealed that the growth of OE lines was improved, the IPU-induced cellular damage was attenuated, and IPU accumulation was significantly repressed, whereas the Cas9 lines displayed a contrasting phenotype compared to the wild-type. Both relative contents of IPU metabolites and conjugates in OE lines were reduced and those in Cas9 line were increased, suggesting that CYP76C6 plays a critical role in IPU degradation. Our study unveils a new regulator, together with its mechanism for IPU decay in rice crops, which will be used in reality to reduce environmental risks in food safety and human health.
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Affiliation(s)
- Xiao Yan Zhai
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhao Jie Chen
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, China
| | - Jintong Liu
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, China
| | - Nan Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, China
| | - Hong Yang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China
- State & Local Joint Engineering Research Center of Green Pesticide Invention and Application, Nanjing Agricultural University, Nanjing 210095, China
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11
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Deng Y, Wang R, Song B, Yang Y, Hu D, Xiao X, Chen X, Lu P. Enantioselective bioaccumulation and toxicity of rac-sulfoxaflor in zebrafish (Danio rerio). THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 817:153007. [PMID: 35026276 DOI: 10.1016/j.scitotenv.2022.153007] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 01/05/2022] [Accepted: 01/05/2022] [Indexed: 06/14/2023]
Abstract
Sulfoxaflor is a fourth-generation neonicotinoid insecticide mainly used to control sap-feeding pests. In this study, four stereoisomers of sulfoxaflor were separated using HPLC, and the absolute configurations of three stereoisomers were identified via single-crystal X-ray diffraction. First, the stability and isomerization of the four enantiomers and rac-sulfoxaflor in water and seven organic solvents were investigated. All enantiomers were extremely unstable in water with isomerization rates above 20%. The racemate did not isomerize in any of the solutions and was stable in water (degradation rate less than 7%). Therefore, we studied the acute toxicity, enantioselective behavior, and enzymatic activities of rac-sulfoxaflor in zebrafish. The bioaccumulation experiment demonstrated that the bioconcentration of sulfoxaflor in zebrafish was enantioselective, and the four enantiomers accumulated in zebrafish in the order (+)-2S,3S-sulfoxaflor > (-)-2R,3R-sulfoxaflor > (+)-2R,3S-sulfoxaflor > (-)-2S,3R-sulfoxaflor. The effect of rac-sulfoxaflor on the enzymatic activities of zebrafish showed that superoxide dismutase and glutathione-S-transferase activities and malondialdehyde content were significantly enhanced as compared to those in control, whereas acetylcholinesterase was significantly reduced in the sulfoxaflor exposure treatment (p < 0.05), indicating that sulfoxaflor caused oxidative lesions and induced enzymatic activity in zebrafish. This study provides important information on the enantioselective behavior and toxic effects of sulfoxaflor, which can help assess the potential ecological risk of chiral pesticides to aquatic organisms.
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Affiliation(s)
- Yao Deng
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Ran Wang
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Bangyan Song
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Ya Yang
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Deyu Hu
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China
| | - Xin Xiao
- School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, China
| | - Xiaohua Chen
- The College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China
| | - Ping Lu
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China.
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12
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Hamed SM, Okla MK, Al-Saadi LS, Hozzein WN, Mohamed HS, Selim S, AbdElgawad H. Evaluation of the phycoremediation potential of microalgae for captan removal: Comprehensive analysis on toxicity, detoxification and antioxidants modulation. JOURNAL OF HAZARDOUS MATERIALS 2022; 427:128177. [PMID: 34999404 DOI: 10.1016/j.jhazmat.2021.128177] [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: 10/01/2021] [Revised: 12/26/2021] [Accepted: 12/27/2021] [Indexed: 06/14/2023]
Abstract
Captan is one of the most widely used organochlorine fungicides, its frequent application contaminates both terrestrial and aquatic ecosystems and negatively affects their key ecological processes. This study demonstrated the toxicity and efficient removal of captan by two different taxonomic species; the green microalga Scenedesmus obliquus and cyanobacterium Nostoc muscorum. After a week of exposure to mild (15 mg/L) and severe (30 mg/L) captan doses, the intracellular captan uptake, degradation and metabolic regulation of captan detoxification were studied. Compared to N. muscorum, S. obliquus accumulated more captan, but efficiently degraded it into two safe eco-friendly by-products; phthalic acid and 1,2,3,6-tetrahydro phthalimide. S. obliquus showed less decrease in cell growth, photosynthesis activity and related parameters including Chla content and activity of PEPC and RuBisCo enzymes. Captan at the severe dose induced oxidative damage particularly in N. muscorum, as expressed by the high levels of H2O2, MDA, NADPH oxidase and protein peroxidation. Both species invested glutathione-s-transferase enzyme in captan detoxification however, induction of antioxidant defence system e.g. ascorbate and glutathione cycle was more pronounced in S. obliquus which could explain its tolerance ability. This study provided a better understanding of the environmental risks of captan and introduced S. obliquus as a promising captan phycoremediator.
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Affiliation(s)
- Seham M Hamed
- Soil Microbiology Department, Soils, Water and Environment Research Institute, Agricultural Research Center, P.O. 175 El-Orman, Giza, Egypt.
| | - Mohammad K Okla
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | | | - Wael N Hozzein
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Hussein S Mohamed
- Research Institute of Medicinal and Aromatic Plants (RIMAP), Beni-Suef University, Beni-Suef City, Egypt; Basic sciences department, Higher Technological Institute, Beni-Suef, Egypt
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, 72341, 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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13
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Li R, Luo C, Qiu J, Li Y, Zhang H, Tan H. Metabolomic and transcriptomic investigation of the mechanism involved in enantioselective toxicity of imazamox in Lemna minor. JOURNAL OF HAZARDOUS MATERIALS 2022; 425:127818. [PMID: 34875416 DOI: 10.1016/j.jhazmat.2021.127818] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/03/2021] [Accepted: 11/14/2021] [Indexed: 05/27/2023]
Abstract
Imazamox (IM) is a chiral pesticide that has been widely used in agriculture. Currently, few studies have investigated the toxicity mechanisms of imazamox to aquatic macrophyte from the enantiomer level. In this study, the enantioselective effects of IM on the toxicity and physiological and biochemical system of aquatic macrophyte Lemna minor were systematically investigated. Metabolomic and transcriptomic for Lemna minor were used to identify potential mechanisms of toxicity. 7 d EC50s for racemic-, R-, and S-IM were 0.036, 0.035, and 0.203 mg/L, respectively, showing enantioselective toxicity. In addition, IM caused Lemna minor lipid peroxidation and antioxidant damage, and inhibited the activities of the target enzymes. Metabolomic and transcriptomic data indicated that R-IM interferenced differentially expressed genes and metabolites of Lemna minor which were enriched in carbon fixation during photosynthesis, glutathione metabolic pathway, pentose phosphate pathway, zeatin biosynthesis, and porphyrin and chlorophyll metabolism. S-IM affected phenylalanine metabolism, phenylpropanoid biosynthesis, zeatin biosynthesis and secondary metabolite biosynthesis. Racemic-IM influenced carbon fixation during operation, glutathione metabolic pathway, zeatin biosynthesis and pentose phosphate pathway. The results provide new insights into the enantioselective toxicity mechanisms of IM to Lemna minor, and lay the foundation for conducting environmental risk assessments.
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Affiliation(s)
- Rui Li
- Guangxi key laboratory of Agric-Environment and Agric-products Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Chenxi Luo
- Guangxi key laboratory of Agric-Environment and Agric-products Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Jingsi Qiu
- Guangxi key laboratory of Agric-Environment and Agric-products Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Yuanfu Li
- Guangxi key laboratory of Agric-Environment and Agric-products Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Hui Zhang
- Guangxi key laboratory of Agric-Environment and Agric-products Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Huihua Tan
- Guangxi key laboratory of Agric-Environment and Agric-products Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning, Guangxi 530004, People's Republic of China.
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14
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Rizzuto S, Jones KC, Zhang H, Baho DL, Leu E, Nizzetto L. Critical assessment of an equilibrium-based method to study the binding of waterborne organic contaminants to natural dissolved organic matter (DOM). CHEMOSPHERE 2021; 285:131524. [PMID: 34329125 DOI: 10.1016/j.chemosphere.2021.131524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
Dissolved organic matter (DOM) can play a major role in determining availability of pollutants to aquatic biota. Equilibrium dialysis is the most commonly used method to assess the interaction between DOM and organic contaminants. However, results obtained through this method can be affected by confounding factors linked to the diffusion of DOM through the membrane or the interaction of DOM and/or the compounds with the membrane itself. In this study, we propose an improved experimental approach, where highly hydrophilic cellulose-ester membranes with small molecular cut-off (100-500 Da) were used to overcome some of these hindrances. The performance of the method to determine the binding of a commonly used moderately hydrophobic herbicide (Isoproturon - ISU) with natural DOM was critically evaluated through a set of quality assurance criteria, across a range of DOM concentrations and pH conditions. DOM trans-membrane diffusion was prevented by the smaller pore size of the dialysis membrane. Good measurement reproducibility, mass balance closure, and successful trans-membrane equilibrium of ISU were obtained. ISU showed relatively low affinity with DOM (log KDOC 1-2 L g-1), which was significantly influenced by varying pH and DOM concentration. An alternative membrane may be needed for higher pH conditions as the greater adsorption effect blurred the observation of trans-membrane equilibrium and confounding mass balance closure. The paper makes recommendations on how to avoid measurement artefacts, while considering criteria for the expected mass distribution of compounds at equilibrium and for sorption onto the membrane and surfaces of the experimental units.
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Affiliation(s)
- Simone Rizzuto
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK
| | - Kevin C Jones
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK.
| | - Hao Zhang
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK.
| | - Didier L Baho
- Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, 0349, Oslo, Norway
| | - Eva Leu
- Akvaplan-niva, CIENS, Science Park, Gaustadalléen 21, 0349, Oslo, Norway
| | - Luca Nizzetto
- Norwegian Institute for Water Research (NIVA), Gaustadalléen 21, 0349, Oslo, Norway; RECETOX, Masaryk University, Kamenice 753/5, 625 00, Brno, Czech Republic
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15
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Jan S, Singh R, Bhardwaj R, Ahmad P, Kapoor D. Plant growth regulators: a sustainable approach to combat pesticide toxicity. 3 Biotech 2020; 10:466. [PMID: 33088662 DOI: 10.1007/s13205-020-02454-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 09/26/2020] [Indexed: 10/23/2022] Open
Abstract
Pesticides are chemical substances intended for preventing or controlling pests. These are toxic substances which contaminate soil, water bodies and vegetative crops. Excessive use of pesticides may cause destruction of biodiversity. In plants, pesticides lead to oxidative stress, inhibition of physiological and biochemical pathways, induce toxicity, impede photosynthesis and negatively affect yield of crops. Increased production of reactive oxygen species like superoxide radicals, O- 2 hydrogen peroxide, H2O2; singlet oxygen, O2; hydroxyl radical, OH-; and hydroperoxyl radical HO2-, causes damage to protein, lipid, carbohydrate and DNA within plants. Plant growth regulators (PGR) are recognized for promoting growth and development under optimal as well as stress conditions. PGR combat adverse effect by acting as chemical messenger and under complex regulation, enable plants to survive under stress conditions. PGR mediate various physiological and biochemical responses, thereby reducing pesticide-induced toxicity. Exogenous applications of PGRs, such as brassinosteroid, cytokinins, salicylic acid, jasmonic acid, etc., mitigate pesticide toxicity by stimulating antioxidant defense system and render tolerance towards stress conditions. They provide resistance against pesticides by controlling production of reactive oxygen species, nutrient homeostasis, increase secondary metabolite production, and trigger antioxidant mechanisms. These phytohormones protect plants against oxidative damage by activating mitogen-stimulated protein kinase cascade. Current study is based on reported research work that has shown the effect of PGR in promoting plant growth subjected to pesticide stress. The present review covers the aspects of pesticidal response of plants and evaluates the contribution of PGRs in mitigating pesticide-induced stress and increasing the tolerance of plants. Further, the study suggests the use of PGRs as a tool in mitigating effects of pesticidal stress together with improved growth and development.
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16
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Varga M, Žurga P, Brusić I, Horvatić J, Moslavac M. Growth inhibition and recovery patterns of common duckweed Lemna minor L. after repeated exposure to isoproturon. ECOTOXICOLOGY (LONDON, ENGLAND) 2020; 29:1538-1551. [PMID: 32797394 DOI: 10.1007/s10646-020-02262-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
Aquatic non-targeted organisms are more likely to be exposed to herbicides in multiple pulse events then long continuous exposure. The potential of an organism to recover between exposures has an important role in the overall effects of the toxicant. Common duckweeds show high potential for recovery after a single exposure to isoproturon. To evaluate the growth patterns and recovery potential between multiple exposures, L. minor plants were exposed to isoproturon in three repetitive 7-day treatment cycles in three time-variable exposure scenarios with equivalent time-weighted average concentrations. The growth was significantly inhibited during each exposure phase with significant cumulative effects in every subsequent treatment cycle resulting in a cumulative decrease in biomass production. However, inhibitory effects were reversible upon transferring plants to a herbicide-free nutrient solution. These results indicate that L. minor plants have a high recovery potential even after multiple exposures to isoproturon. Observed cumulative decrease in biomass production, as well as the potential for fast and efficient recovery from repeated herbicide exposure, might affect the competitiveness of L. minor in surface water communities. The observations made during each exposure period, recovery patterns, and the resulting cumulative effects over time may contribute to further development, calibration and validation of mechanistic toxicokinetic/toxicodynamic models for simulating the effects of pesticides on aquatic plants populations in the laboratory and environmental conditions.
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Affiliation(s)
- Martina Varga
- University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000, Osijek, Croatia.
| | - Paula Žurga
- Teaching Institute of Public Health of Primorsko-goranska County, Krešimirova 52, 51000, Rijeka, Croatia
| | - Iva Brusić
- Teaching Institute of Public Health of Primorsko-goranska County, Krešimirova 52, 51000, Rijeka, Croatia
| | - Janja Horvatić
- University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000, Osijek, Croatia
| | - Marko Moslavac
- University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000, Osijek, Croatia
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17
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Yang W, Gao X, Wu Y, Wan L, Tan L, Yuan S, Ding H, Zhang W. The combined toxicity influence of microplastics and nonylphenol on microalgae Chlorella pyrenoidosa. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 195:110484. [PMID: 32200150 DOI: 10.1016/j.ecoenv.2020.110484] [Citation(s) in RCA: 116] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 03/12/2020] [Accepted: 03/14/2020] [Indexed: 05/06/2023]
Abstract
Microplastics and nonylphenol (NP) are considered as emerging pollutant and have attracted wide attention, while their combined toxicity on aquatic organisms is barely researched. Therefore, the combined toxicity influence of NP with three types of microplastics containing polyethylene (PE1000, 13 μm and PE, 150 μm), polyamide (PA1000, 13 μm and PA, 150 μm) polystyrene (PS, 150 μm) on microalgae Chlorella pyrenoidosa was analyzed. Both growth inhibition, chlorophyll fluorescence, superoxide dismutase (SOD), malondialdehyde (MDA), and catalase (CAT) were determined. We found that single microplastics and NP both inhibited algal growth, thereby causing oxidative stress. The order of inhibition effect in single microplastics experiment was PE1000 > PA1000 > PE ≈ PS > PA. The combined toxicity experiment results indicated that the presence of microplastics had positive effect in terms of alleviating NP toxicity to C. pyrenoidosa, and the microplastics adsorption capacity to NP was the dominant contributing factor for this effect. According to the independent action model, the combined toxicity was antagonistic. Because the negative effect of smaller size microplastics on algal growth was aggravated with prolonged exposure time, the optimum effect of microplastics alleviated NP toxicity was PA1000 at 48 h, while this effect was substituted by PA at 96 h during combined toxicity. Thus, the toxicity of smaller size microplastics has a nonnegligible influence on combined toxicity. This study confirms that microplastics significantly affected the toxicity of organic pollutants on microalgae. Further research on the combined toxicity of smaller size microplastics with pollutants in chronic toxicity is needed.
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Affiliation(s)
- Wenfeng Yang
- College of Resource and Environmental Science, Wuhan University, Wuhan, 430072, PR China; School of Resource and Environmental Sciences, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan Hubei, 430079, China
| | - Xinxin Gao
- College of Resource and Environmental Science, Wuhan University, Wuhan, 430072, PR China
| | - Yixiao Wu
- College of Resource and Environmental Science, Wuhan University, Wuhan, 430072, PR China; School of Resource and Environmental Sciences, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan Hubei, 430079, China
| | - Liang Wan
- College of Resource and Environmental Science, Wuhan University, Wuhan, 430072, PR China; School of Resource and Environmental Sciences, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan Hubei, 430079, China
| | - Lichen Tan
- College of Resource and Environmental Science, Wuhan University, Wuhan, 430072, PR China
| | - Shaoman Yuan
- College of Resource and Environmental Science, Wuhan University, Wuhan, 430072, PR China
| | - Huijun Ding
- Jiangxi Provincial Key Laboratory of Water Resources and Environment of Poyang Lake, Jiangxi Institute of Water Sciences, Nanchang, 330029, PR China
| | - Weihao Zhang
- College of Resource and Environmental Science, Wuhan University, Wuhan, 430072, PR China; School of Resource and Environmental Sciences, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan Hubei, 430079, China.
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18
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Zhang F, Yao X, Sun S, Wang L, Liu W, Jiang X, Wang J. Effects of mesotrione on oxidative stress, subcellular structure, and membrane integrity in Chlorella vulgaris. CHEMOSPHERE 2020; 247:125668. [PMID: 31931307 DOI: 10.1016/j.chemosphere.2019.125668] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 12/13/2019] [Accepted: 12/13/2019] [Indexed: 06/10/2023]
Abstract
Mesotrione is a selective herbicide used to prevent weed attack of corn. It is extensively used, and hence, is being increasingly detected in aquatic ecosystems and may exert adverse effects on aquatic organisms. To evaluate the effects of mesotrione on photosynthesis-related gene expression, antioxidant enzyme activities, subcellular structure, and membrane integrity in algal cells, a comprehensive study was conducted using the green alga, Chlorella vulgaris. Exposure to 4-50 mg/L mesotrione resulted in a progressive inhibition of cell growth, with a 96-h median inhibition concentration (96 h- ErC50) value of 18.8 mg/L. Further, 18 and 37.5 mg/L mesotrione affected the algal photosynthetic capacity by decreasing the cell pigment content and reducing transcript abundance of photosynthesis-related genes. Mesotrione induced oxidative stress, as confirmed by increased cellular levels of reactive oxygen species (ROS) and malondialdehyde (MDA), and altered antioxidant enzyme activities. It also damaged the algal cellular structure, observed as plasmolysis, blurred organelle shape, and disruption of the chloroplast structure. Flow cytometry analysis revealed that mesotrione exposure led to uneven cell growth and interior irregularities in the algal cell. The apparent propidium iodide (PI) influx also confirmed that the herbicide induced damage of the cell membrane integrity. This study will facilitate the understanding of the physiological and morphological changes induced by mesotrione in C. vulgaris cells, and provide basic information for understanding the biological mechanisms of mesotrione-induced algal toxicity.
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Affiliation(s)
- Fengwen Zhang
- College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China; Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China
| | - Xiangfeng Yao
- College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China; Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China
| | - Shiang Sun
- College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China; Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China
| | - Lipeng Wang
- College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China; Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China
| | - Weitang Liu
- College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China; Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China
| | - Xingyin Jiang
- College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China; Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China.
| | - Jinxin Wang
- College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China; Key Laboratory of Pesticide Toxicology and Application Technique, College of Plant Protection, Shandong Agricultural University, Tai'an, 271018, PR China.
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19
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Jamwal S, Ranote S, Dautoo U, Chauhan GS. Improving activity and stabilization of urease by crosslinking to nanoaggregate forms for herbicide degradation. Int J Biol Macromol 2020; 158:521-529. [PMID: 32360462 DOI: 10.1016/j.ijbiomac.2020.04.224] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/13/2020] [Accepted: 04/25/2020] [Indexed: 01/14/2023]
Abstract
Bioremediation is the most effective green protocol for degradation of environmental contaminants. Present study involves carrier free urease immobilization with synthesis of its new crosslinked aggregates using two different crosslinkers, divinyl benzene (DVB) and tripropyleneglycol dimethacrylate (TPGDA) via free radical mechanism. Resulting crosslinked ureases were further converted to nanoform (CLUNAs) using solvent evaporation technique. The activity of free and the crosslinked ureases was studied as a function of operational parameters viz. temperature (20-80), pH (2-11) and substrate concentration (5-20 mM) using urea as substrate at contact time of 10 min. Storability study of the pristine urease and CLUNAs was carried out for 40 days, and the CLUNAs were reused in 10 repeat cycles to assess their reusability. Isoproturone degradation was studied under the above-cited range of pH and temperature and results were recorded after 24 h.
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Affiliation(s)
- Shivani Jamwal
- Himachal Pradesh University, Department of Chemistry, Summerhill, Shimla 171005, Himachal Pradesh, India
| | - Sunita Ranote
- Himachal Pradesh University, Department of Chemistry, Summerhill, Shimla 171005, Himachal Pradesh, India
| | - Umesh Dautoo
- Himachal Pradesh University, Department of Chemistry, Summerhill, Shimla 171005, Himachal Pradesh, India
| | - Ghanshyam S Chauhan
- Himachal Pradesh University, Department of Chemistry, Summerhill, Shimla 171005, Himachal Pradesh, India.
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20
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Wang XD, Lu YC, Xiong XH, Yuan Y, Lu LX, Liu YJ, Mao JH, Xiao WW. Toxicological responses, bioaccumulation, and metabolic fate of triclosan in Chlamydomonas reinhardtii. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:11246-11259. [PMID: 31960244 DOI: 10.1007/s11356-020-07704-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 01/09/2020] [Indexed: 06/10/2023]
Abstract
Triclosan (TCS) is a broad-spectrum antimicrobial agent that is broadly used in personal care products. It has been shown to cause the contamination of a variety of aquatic environments. Since algae has been the primary producers of aquatic ecosystems, understanding the toxicological mechanisms and the metabolic fate of TCS is vital for assessing its risk in an aquatic environment. In our study, 0.5-4 mg L-1 TCS treatments for 72 h in a culture of Chlamydomonas reinhardtii (C. reinhardtii) showed progressive inhibition of cell growth and reduced the chlorophyll content. The EC50 value of C. reinhardtii after 72 h was 1.637 mg L-1, which showed its higher level of resistance to TCS in comparison with other algal species. The exposure to TCS led to oxidative injuries of algae in relation to the increment of malonaldehyde content, cell membrane permeability, and H2O2 levels. Furthermore, the oxidative stress from TCS stimulated a series of antioxidant enzyme activities and their gene expressions. Simultaneously, the accumulated TCS in C. reinhardtii arouses the detoxification/degradation-related enzymes and related gene transcriptions. In the medium, approximately 82% of TCS was removed by C. reinhardtii. Importantly, eight TCS metabolites were identified by ultra-performance liquid chromatography-high-resolution mass spectrometry and their relative abundances were measured in a time-course experiment. Six of these metabolites are reported here for the first time. The metabolic pathways of triclosan via C. reinhardtii including reductive dechlorination, hydroxylation, sulfhydrylation, and binding with thiol/cysteine/GSH/glycosyl were manifested to broaden our understanding of the environmental fate of TCS. Graphical Abstract.
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Affiliation(s)
- Xiao Dong Wang
- College of Food Science and Light Industry, Nanjing Tech University, Puzhu South Street No. 30, Nanjing, 211816, China
| | - Yi Chen Lu
- College of Food Science and Light Industry, Nanjing Tech University, Puzhu South Street No. 30, Nanjing, 211816, China.
| | - Xiao Hui Xiong
- College of Food Science and Light Industry, Nanjing Tech University, Puzhu South Street No. 30, Nanjing, 211816, China
| | - Yi Yuan
- Horticultural Research Institute, Yunnan Academy of Agricultural Sciences, Kunming, 650205, Yunnan, China
| | - Li Xia Lu
- College of Food Science and Light Industry, Nanjing Tech University, Puzhu South Street No. 30, Nanjing, 211816, China
| | - Yuan Jian Liu
- College of Food Science and Light Industry, Nanjing Tech University, Puzhu South Street No. 30, Nanjing, 211816, China
| | - Jia Hao Mao
- College of Food Science and Light Industry, Nanjing Tech University, Puzhu South Street No. 30, Nanjing, 211816, China
| | - Wei Wei Xiao
- College of Food Science and Light Industry, Nanjing Tech University, Puzhu South Street No. 30, Nanjing, 211816, China
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21
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Hamed SM, Hassan SH, Selim S, Wadaan MAM, Mohany M, Hozzein WN, AbdElgawad H. Differential responses of two cyanobacterial species to R-metalaxyl toxicity: Growth, photosynthesis and antioxidant analyses. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 258:113681. [PMID: 31843238 DOI: 10.1016/j.envpol.2019.113681] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 11/24/2019] [Accepted: 11/26/2019] [Indexed: 05/12/2023]
Abstract
Metalaxyl is a broad-spectrum chiral fungicide that used for the protection of plants, however extensive use of metalaxyl resulted in serious environmental problems. Thus, a study on the detoxification mechanism in algae/cyanobacteria and their ability for phycoremediation is highly recommended. Here, we investigated the physiological and biochemical responses of two cyanobacterial species; Anabaena laxa and Nostoc muscorum to R-metalaxyl toxicity as well as their ability as phycoremediators. Two different levels of R-metalaxyl, at mild (10 mg/L) and high dose (25 mg/L), were applied for one-week. We found that A. laxa absorbed and accumulated more intracellular R-metalaxyl compared to N. muscorum. R-metalaxyl, which triggered a dose-based reduction in cell growth, photosynthetic pigment content, and photosynthetic key enzymes' activities i.e., phosphoenolpyruvate carboxylase (PEPC) and ribulose‒1,5‒bisphosphate carboxylase/oxygenase (RuBisCo). These decreases were significantly less pronounced in A. laxa. On the other hand, R-metalaxyl significantly induced oxidative damage markers, e.g., H2O2 levels, lipid peroxidation (MDA), protein oxidation and NADPH oxidase activity. However, these increases were also lower in A. laxa compared to N. muscorum. To alleviate R-metalaxyl toxicity, A. laxa induced the polyphenols, flavonoids, tocopherols and glutathione (GSH) levels as well as peroxidase (POX), glutathione peroxidase (GPX), glutathione reductase (GR) and glutathione-s-transferase (GST) enzyme activities. On the contrary, the significant induction of antioxidants in N. muscorum was restricted to ascorbate, catalase (CAT) and ascorbate peroxidase (APX), dehydroascorbate reductase (DHAR) enzyme activities. Although A. laxa accumulated more R-metalaxyl, it experienced less stress due to subsequent induction of antioxidants. Therefore, A. laxa may be a promising R-metalaxyl phycoremediator. Our results provided basic data for understanding the ecotoxicology of R-metalaxyl contamination in aquatic habitats and the toxicity indices among cyanobacteria.
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Affiliation(s)
- Seham M Hamed
- Soil Microbiology Department, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, P.O. 175, El‒Orman, Egypt.
| | - Sherif H Hassan
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, P.O. 2014, Saudi Arabia; Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, P.O. 2014, Saudi Arabia; Microbiology and Botany Department, Faculty of Science, Suez Canal University, Ismailia, P.O. Box 41522, Egypt
| | - Mohammed A M Wadaan
- Bioproducts Research Chair, Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mohamed Mohany
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Wael N Hozzein
- Bioproducts Research Chair, Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia; Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt.
| | - 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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22
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Gao J, Wang F, Jiang W, Han J, Wang P, Liu D, Zhou Z. Biodegradation of Chiral Flufiprole in Chlorella pyrenoidosa: Kinetics, Transformation Products, and Toxicity Evaluation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:1966-1973. [PMID: 31986037 DOI: 10.1021/acs.jafc.9b05860] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Pesticide pollution of surface water represents a considerable risk for algae and thus affects the structure and stability of aquatic ecosystems. To investigate the risk of flufiprole to phytoplankton, the digestion and uptake of flufiprole as well as the toxic effects of flufiprole enantiomers and the six metabolites to Chlorella pyrenoidosa were investigated. Flufiprole enantiomers were mainly metabolized to flufiprole amide and detrifluoromethylsulfinyl flufiprole in culture medium, while various metabolites were formed in algae, notably the amide derivative and fipronil. Chlorella pyrenoidosa showed a strong absorption capacity for the flufiprole series. The EC50 values (96 h) indicated that fipronil was the most toxic compound, approximately 5 times as toxic as rac-flufiprole. R-flufiprole was more toxic than S-flufiprole. The contents of chlorophylls, malondialdehyde (MDA), reactive oxygen species (ROS), and total antioxidant capacity (T-AOC) were significantly altered by the chemicals in most cases, especially fipronil. Our results supported the potential detrimental effect of the metabolites of flufiprole on algae.
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Affiliation(s)
- Jing Gao
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry , China Agricultural University , No. 2 West Yuanmingyuan Road , Beijing 100193 , P.R. China
| | - Fang Wang
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry , China Agricultural University , No. 2 West Yuanmingyuan Road , Beijing 100193 , P.R. China
- Beijing Key Laboratory of Emerging Organic Contaminants Control, State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment , Tsinghua University , Beijing 100084 , P.R. China
| | - Wenqi Jiang
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry , China Agricultural University , No. 2 West Yuanmingyuan Road , Beijing 100193 , P.R. China
| | - Jiajun Han
- Department of Chemistry , University of Toronto , 80 St. George Street , Toronto M5S 3H6 , Ontario Canada
| | - Peng Wang
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry , China Agricultural University , No. 2 West Yuanmingyuan Road , Beijing 100193 , P.R. China
| | - Donghui Liu
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry , China Agricultural University , No. 2 West Yuanmingyuan Road , Beijing 100193 , P.R. China
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, Department of Applied Chemistry , China Agricultural University , No. 2 West Yuanmingyuan Road , Beijing 100193 , P.R. China
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23
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Wan L, Wu Y, Ding H, Zhang W. Toxicity, Biodegradation, and Metabolic Fate of Organophosphorus Pesticide Trichlorfon on the Freshwater Algae Chlamydomonas reinhardtii. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:1645-1653. [PMID: 31972072 DOI: 10.1021/acs.jafc.9b05765] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study investigated the toxicity of trichlorfon (TCF) to the freshwater algae Chlamydomonas reinhardtii, as well as its biodegradation and metabolic fate. The growth of C. reinhardtii decreased with increasing TCF concentration, and the maximum inhibition ratio was 51.3% at 200 mg L-1 TCF compared to the control. Analyses of pigment content, chlorophyll fluorescence, and antioxidant enzymes indicated that C. reinhardtii can produce resistance and acclimatize to the presence of TCF. The variations in pH during cultivation suggested that photosynthetic microalgae have innate advantages over bacteria and fungi in remediating TCF. A 100% biodegradation rate was achieved at a maximum concentration of 100 mg L-1 TCF. Ten metabolites were identified by GC-MS, and the degradation pathways of TCF by the algae were proposed. This research demonstrated that C. reinhardtii is highly tolerant to and can efficiently degrade TCF. Thus, C. reinhardtii can be used to remove traces of TCF from natural water environments and to treat TCF-contaminated wastewater.
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Affiliation(s)
- Liang Wan
- School of Resource and Environmental Sciences , Wuhan University , Wuhan 430072 , P. R. China
| | - Yixiao Wu
- School of Resource and Environmental Sciences , Wuhan University , Wuhan 430072 , P. R. China
| | - Huijun Ding
- Jiangxi Provincial Key Laboratory of Water Resources and Environment of Poyang Lake , Jiangxi Provincial Institute of Water Sciences , Nanchang 330029 , P. R. China
| | - Weihao Zhang
- Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, School of Resource and Environmental Sciences , Wuhan University , Wuhan 430079 , P. R. China
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24
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Khan MI, Cheema SA, Anum S, Niazi NK, Azam M, Bashir S, Ashraf I, Qadri R. Phytoremediation of Agricultural Pollutants. CONCEPTS AND STRATEGIES IN PLANT SCIENCES 2020. [DOI: 10.1007/978-3-030-00099-8_2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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25
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Varga M, Horvatić J, Žurga P, Brusić I, Moslavac M. Phytotoxicity assessment of isoproturon on growth and physiology of non-targeted aquatic plant Lemna minor L. - A comparison of continuous and pulsed exposure with equivalent time-averaged concentrations. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 213:105225. [PMID: 31220755 DOI: 10.1016/j.aquatox.2019.105225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/10/2019] [Accepted: 06/11/2019] [Indexed: 06/09/2023]
Abstract
Phenylurea herbicides are often present in the aquatic ecosystems and may be accumulated by the non-targeted organisms and impose a negative effect on the organism and the community. This study aims to investigate and compare the effects of two different isoproturon (IPU) pulse exposure scenarios on the non-targeted aquatic plant Lemna minor with effects observed in the standard test with continuous exposure. The obtained results showed that continuous IPU treatment causes significant reduction of photosynthetic pigment concentration and proteins as well as inhibition of L. minor growth. The activities of CAT, G-POX, and APX were significantly induced to diminish the accumulation of ROS under IPU treatment, but the induction of antioxidant enzymes was not sufficient to protect the plants from herbicide-induced oxidative stress. The growth of L. minor under pulse exposure to IPU recovers fast, but pulse treatment results in significant physiological changes in treated plants. The accumulation of H2O2 and lipid peroxidation products, alongside the reduced concentration of proteins and photosynthetic pigments in pulse treatment after a recovery period, indicates that IPU causes prolonged oxidative stress in L. minor plants. The recovery potential of L. minor plants after treatment with herbicides may have an important role in maintaining the population of essential primary producers in aquatic ecosystems, but IPU-induced physiological changes could potentially have a significant role in modulating the response of the plants to the next exposure event.
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Affiliation(s)
- Martina Varga
- University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Janja Horvatić
- University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia
| | - Paula Žurga
- Teaching Institute of Public Health of Primorsko-goranska County, Krešimirova 52, 51000 Rijeka, Croatia
| | - Iva Brusić
- Teaching Institute of Public Health of Primorsko-goranska County, Krešimirova 52, 51000 Rijeka, Croatia
| | - Marko Moslavac
- University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia
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Ding T, Li W, Li J. Toxicity and Metabolic Fate of the Fungicide Carbendazim in the Typical Freshwater Diatom Navicula Species. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:6683-6690. [PMID: 31140797 DOI: 10.1021/acs.jafc.8b06179] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Fungicides are frequently detected in natural water and have gained increasing attention as a result of their potential toxicity to non-target aquatic organisms. Carbendazim (CAR), a commonly used fungicide, was selected to explore its toxicity and biodegradation in a typical freshwater diatom Navicula sp. Results showed that the growth of Navicula sp. was inhibited by CAR, with a 24 h EC50 value of 2.18 mg L-1. Although the algal growth rate was recovered after 72 h of exposure, the chlorophyll a content remained significantly decreased when the concentration of CAR was above 0.5 mg L-1. Moreover, Navicula sp. had a negative effect on the removal of CAR, and the acute toxicity by CAR was likely due to its rapid accumulation in algal cells. Mass spectrometric data revealed the transformation products of CAR from hydroxylation, methylation, decarboxylation, demethylation, and deamination in algal cultures. These results provide a better understanding of the environmental risks of CAR in water and point to the need for additional studies on the potential adverse biological effects of its intermediates.
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Affiliation(s)
- Tengda Ding
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, College of Chemistry and Environmental Engineering , Shenzhen University , Shenzhen , Guangdong 518060 , People's Republic of China
| | - Wen Li
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, College of Chemistry and Environmental Engineering , Shenzhen University , Shenzhen , Guangdong 518060 , People's Republic of China
| | - Juying Li
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation, College of Chemistry and Environmental Engineering , Shenzhen University , Shenzhen , Guangdong 518060 , People's Republic of China
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27
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Huang B, Tang J, He H, Gu L, Pan X. Ecotoxicological effects and removal of 17β-estradiol in chlorella algae. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 174:377-383. [PMID: 30849658 DOI: 10.1016/j.ecoenv.2019.01.129] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 01/06/2019] [Accepted: 01/17/2019] [Indexed: 06/09/2023]
Abstract
17β-estradiol (E2) is a steroid estrogen able to affect the reproduction of aquatic organisms even at extremely low concentrations. The behavior of E2 in the presence of chlorella algae was investigated in laboratory experiments. The results showed that the algae's growth was inhibited by 26% after 7 days of culturing in a 2.0 mg L-1 solution of E2. The 96 h EC50 value of 21.46 mg L-1 reflected moderate toxicity. Even low concentrations of E2 were found to affect total chlorophyll and carotenoid levels after 7 and 10 days and to alter stress-generated enzymatic activity in the algae. The efficiency of chlorella's E2 degradation decreased with the increasing of E2 concentration, but 92% of the E2 can be removed from a 0.5 mg L-1 solution over 10 days. The degradation mechanism was speculated. The microalgae suffered relatively less growth inhibition at low E2 concentrations, and their removal effectiveness was then better. The data help to elucidate the interaction between chlorella algae and E2 in an aquatic environment.
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Affiliation(s)
- Bin Huang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, PR China
| | - Jin Tang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, PR China; College of Environmental Science and Engineering, Guilin University of Technology, Guilin, Guangxi 541006, PR China
| | - Huan He
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, PR China
| | - Lipeng Gu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, PR China
| | - Xuejun Pan
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, PR China.
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28
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Deng Y, Zhang W, Qin Y, Liu R, Zhang L, Wang Z, Zhou Z, Diao J. Stereoselective toxicity of metconazole to the antioxidant defenses and the photosynthesis system of Chlorella pyrenoidosa. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 210:129-138. [PMID: 30851487 DOI: 10.1016/j.aquatox.2019.02.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 02/22/2019] [Accepted: 02/22/2019] [Indexed: 06/09/2023]
Abstract
Metconazole (MEZ) is a broad-spectrum fungicide with four optical stereoisomers. Compared to traditional fungicides, it achieves better control effect at lower dosages. However, its toxicity to non-target organisms has rarely been investigated. This study investigated the stereoselective toxicity of metconazole to Chlorella pyrenoidosa (C. pyrenoidosa). The results indicate that the presence of the racemate and four stereoisomers of MEZ caused a sudden increase of reactive oxygen species (ROS). This in turn stimulated antioxidant defense, impaired photosynthesis and responses of subcellular structure, and eventually inhibited cell growth. The 96 h-EC50 of the racemate, cis-1R,5S-MEZ, cis-1S,5R-MEZ, trans-1S,5S-MEZ, and trans-1R,5R-MEZ were 0.058, 0.182, 0.129, 0.032, and 0.038 mg/L, respectively. Furtheromre, the generation of ROS, antioxidant response, and the loss of photosynthetic function in C. pyrenoidosa were all preferentially trans-1S,5S-MEZ induced. These results aid the understanding of the stereoselective effects of chiral pesticides on C. pyrenoidosa. Such stereoselective differences must be considered when assessing the risk of metconazole to environment.
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Affiliation(s)
- Yue Deng
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, Yuanmingyuan West Road 2, Beijing, 100193, China
| | - Wenjun Zhang
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, Yuanmingyuan West Road 2, Beijing, 100193, China
| | - Yinan Qin
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, Yuanmingyuan West Road 2, Beijing, 100193, China
| | - Rui Liu
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, Yuanmingyuan West Road 2, Beijing, 100193, China
| | - Luyao Zhang
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, Yuanmingyuan West Road 2, Beijing, 100193, China
| | - Zikang Wang
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, Yuanmingyuan West Road 2, Beijing, 100193, China
| | - Zhiqiang Zhou
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, Yuanmingyuan West Road 2, Beijing, 100193, China
| | - Jinling Diao
- Department of Applied Chemistry, China Agricultural University, Yuanmingyuan West Road 2, Beijing, 100193, China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, Yuanmingyuan West Road 2, Beijing, 100193, China.
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29
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Lu FF, Xu JY, Ma LY, Su XN, Wang XQ, Yang H. Isoproturon-Induced Salicylic Acid Confers Arabidopsis Resistance to Isoproturon Phytotoxicity and Degradation in Plants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:13073-13083. [PMID: 30403864 DOI: 10.1021/acs.jafc.8b04281] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This study identified the effect of salicylic acid on degradation of isoproturon in Arabidopsis. Three T-DNA insertion mutant lines pal1- 1, pal1- 2, and eps1- 1 defective in salicylic acid synthesis were tested, which showed higher isoproturon accumulation and a toxic symptom in the mutants. When treated with 5 mg/L salicylic acid, these lines displayed a lower level of isoproturon and showed an attenuated toxic symptom. An RNA-sequencing study identified 2651 (1421 up and 1230 down) differentially expressed genes (DEGs) in eps1- 1 and 2211 (1556 up and 655 down) in pal1- 2 mutant plants (>2.0 fold change, p < 0.05). Some of the DEGs covered Phase I-III reaction components, like glycosyltransferases (GTs) and ATP-binding cassette transporters (ABCs). Using ultra performance liquid chromatography-time-of-flight-tandem-mass spectrometer/mass spectrometer (UPLC/Q-TOF-MS/MS), 13 Phase I and four Phase II metabolites were characterized. Of these, two metabolites 1-OH-isopropyl-benzene-O-glucoside and 4-isopropylphenol-S-2-methylbutanoyl-serine, have been identified and reported for the first time.
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Affiliation(s)
- Feng Fan Lu
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences , Nanjing Agricultural University , Nanjing 210095 , China
| | - Jiang Yan Xu
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences , Nanjing Agricultural University , Nanjing 210095 , China
| | - Li Ya Ma
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences , Nanjing Agricultural University , Nanjing 210095 , China
| | - Xiang Ning Su
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences , Nanjing Agricultural University , Nanjing 210095 , China
- Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Agriculture , Nanjing Agricultural University , Nanjing 210095 , China
| | - Xin Qiang Wang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences , Nanjing Agricultural University , Nanjing 210095 , China
| | - Hong Yang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences , Nanjing Agricultural University , Nanjing 210095 , China
- Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Agriculture , Nanjing Agricultural University , Nanjing 210095 , China
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30
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Cheng C, Ma R, Lu Y, Liu C, Zhang W, Di S, Chen L, Diao J, Zhou Z, Hou Y. Enantioselective toxic effects and digestion of furalaxyl enantiomers in Scenedesmus obliquus. Chirality 2018; 30:1269-1276. [PMID: 30238504 DOI: 10.1002/chir.23020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/27/2018] [Accepted: 08/30/2018] [Indexed: 01/19/2023]
Abstract
Research on the enantioselective environmental behavior of chiral pesticides has been a hot spot of environmental chemistry recently. In this study, the acute toxicity and digestion of furalaxyl enantiomers were determined on the aquatic algae Scendesmus obliquus. After exposure for 96 hours, the EC50 values for (S)-furalaxyl and (R)-furalaxyl were 13.59 and 15.26 mg/L, respectively. In addition, enantioselectivity was observed from the determined chlorophyll contents and antioxidant enzyme (CAT and SOD) activities of algae cells after exposure to furalaxyl enantiomers for 96 hours. The digestion rate of (S)-furalaxyl and (R)-furalaxyl were almost the same in S. obliquus. On the basis of these data, the inactive enantiomers (S)- furalaxyl is more toxic than the active one on the non-target species S. obliquus, indicating that such enantiomeric differences should be taken into consideration in the study of pesticide risk assessment.
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Affiliation(s)
- Cheng Cheng
- College of Science, China Agricultural University, Beijing, China
| | - Rui Ma
- College of Science, China Agricultural University, Beijing, China
| | - Yuele Lu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Chunxiao Liu
- College of Science, China Agricultural University, Beijing, China
| | - Wenjun Zhang
- College of Science, China Agricultural University, Beijing, China
| | - Shanshan Di
- College of Science, China Agricultural University, Beijing, China
| | - Li Chen
- College of Science, China Agricultural University, Beijing, China
| | - Jinling Diao
- College of Science, China Agricultural University, Beijing, China
| | - Zhiqiang Zhou
- College of Science, China Agricultural University, Beijing, China
| | - Yuxia Hou
- College of Science, China Agricultural University, Beijing, China
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31
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Deng XY, Li D, Wang L, Hu XL, Cheng J, Gao K. Potential toxicity of ionic liquid ([C 12mim]BF 4) on the growth and biochemical characteristics of a marine diatom Phaeodactylum tricornutum. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 586:675-684. [PMID: 28202243 DOI: 10.1016/j.scitotenv.2017.02.043] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 02/03/2017] [Accepted: 02/05/2017] [Indexed: 05/19/2023]
Abstract
Recently, some researchers have pointed out that the threats of ionic liquids (ILs) to aquatic environment cannot be ignored. Thus, this study investigated the potential toxicity of 1-dodecyl-3-methylimidazolium tetrafluoroborate ([C12mim]BF4) on a marine diatom Phaeodactylum tricornutum at population, biochemical and physiological levels using 96h growth tests with a batch-culture system. Results showed that [C12mim]BF4 was very stable in aquatic environment during 96h of exposure. The growth of P. tricornutum was significantly inhibited by [C12mim]BF4 with 24, 48, 72 and 96h EC50 values of 0.63, 0.61, 0.68 and 0.72mgL-1, respectively. Although there were no significant differences between the controls and treatments with 0.1 and 0.5mgL-1 [C12mim]BF4, the effective quantum yields (ΦPSII) of the diatom in 1, 2.5, 5 and 10mgL-1 [C12mim]BF4 treatments were 61.48, 17.04, 2.96 and 0.74% of that in the controls at 96h of exposure, respectively. Chl a content of the diatom was decreased by 34.86, 47.79, 49.81, 59.21, 79.82 and 86.98% compared with that of the controls at 96h of exposure in 0.1, 0.5, 1, 2.5, 5 and 10mgL-1 [C12mim]BF4 treatments, respectively. Relative to the controls, soluble sugar content, reactive oxygen species (ROS) level, malondialdehyde (MDA) content, superoxide dismutase (SOD) and peroxidase (POD) activities of the diatom increased with increasing [C12mim]BF4 concentrations at 96h of exposure, and reached their maxima (1.46μg106cell-1, 7.48FU107cell-1, 3.35nmol108cell-1, 33.41 and 7.23Umg-1 proteins, respectively) in 5mgL-1 [C12mim]BF4 treatments. While the maximum soluble protein content (1.56μg106cell-1) of the diatom was obtained in 0.5mgL-1 [C12mim]BF4 treatments, and then decreased with increasing [C12mim]BF4 concentrations from 0.5 to 10mgL-1. These findings provide strong evidence for the potential toxicity of ILs to marine diatoms.
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Affiliation(s)
- Xiang-Yuan Deng
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212003, China.
| | - Da Li
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Ling Wang
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Xiao-Li Hu
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Jie Cheng
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Kun Gao
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212003, China
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32
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Cheng C, Di S, Chen L, Zhang W, Diao J, Zhou Z. Enantioselective Bioaccumulation, Tissue Distribution, and Toxic Effects of Myclobutanil Enantiomers in Pelophylax nigromaculatus Tadpole. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:3096-3102. [PMID: 28291946 DOI: 10.1021/acs.jafc.7b00086] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Research on the enantioselective behavior of chiral pesticides on amphibians has received growing attention, because amphibians are experiencing a population decline and amphibian metamorphosis shares many similarities with human fetal development. In this study, the enantioselective behavior of myclobutanil on Pelophylax nigromaculatus tadpole was studied. The antioxidant enzyme (SOD, GST) activities and malondialdehyde (MDA) content were investigated to assess the different toxic effects when tadpoles were exposed to myclobutanil enantiomers for 96 h. In the chronic exposure experiment, the bioaccumulation concentration of (-)-myclobutanil in tadpoles is significantly higher than that of (+)-myclobutanil, and the concentration of myclobutanil in tadpole intestine and liver was higher compared with other tissues. During the elimination experiment, about 95% of myclobutanil in tadpoles was eliminated within only 24 h. On the basis of these data, the enantiomeric differences should be taken into consideration in the risk assessment of myclobutanil.
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Affiliation(s)
- Cheng Cheng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University , Yuanmingyuan West Road 2, Beijing 100193, China
| | - Shanshan Di
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University , Yuanmingyuan West Road 2, Beijing 100193, China
| | - Li Chen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University , Yuanmingyuan West Road 2, Beijing 100193, China
| | - Wenjun Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University , Yuanmingyuan West Road 2, Beijing 100193, China
| | - Jinling Diao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University , Yuanmingyuan West Road 2, Beijing 100193, China
| | - Zhiqiang Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, China Agricultural University , Yuanmingyuan West Road 2, Beijing 100193, China
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Xiong JQ, Kurade MB, Kim JR, Roh HS, Jeon BH. Ciprofloxacin toxicity and its co-metabolic removal by a freshwater microalga Chlamydomonas mexicana. JOURNAL OF HAZARDOUS MATERIALS 2017; 323:212-219. [PMID: 27180206 DOI: 10.1016/j.jhazmat.2016.04.073] [Citation(s) in RCA: 182] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 04/25/2016] [Accepted: 04/29/2016] [Indexed: 05/13/2023]
Abstract
This study evaluated the toxicity and cellular stresses of ciprofloxacin (CIP) and its co-metabolic removal in a freshwater microalga Chlamydomonas mexicana. The toxicological effects of CIP on C. mexicana were assessed by studying the growth and biochemical characteristics of the microalga including total chlorophyll, carotenoid content, malondialdehyde (MDA) and superoxide dismutase (SOD) activity. The calculated effective concentration (EC50) of CIP on C. mexicana was 65±4mgL-1 at 96h. The growth of C. mexicana was significantly inhibited at increased concentrations of CIP, showing 36±1, 75±3. and 88±3% inhibition at 40, 60 and 100mgL-1 CIP, respectively, compared to the control after 11days of cultivation. The total chlorophyll, carotenoid, MDA and SOD activity were significantly increased as a result of relatively high concentrations of CIP stress. C. mexicana showed 13±1% removal of CIP (2mgL-1) after 11days of cultivation; however, the addition of an electron donor (sodium acetate, 4gL-1) highly enhanced the removal of CIP (2mgL-1) by>3-fold after 11days. Kinetic studies showed that removal of CIP followed a first-order model (R2 0.94-0.97) with the apparent rate constants (k) ranging from 0.0121 to 0.079 d-1.
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Affiliation(s)
- Jiu-Qiang Xiong
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 133-791, South Korea
| | - Mayur B Kurade
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 133-791, South Korea
| | - Jung Rae Kim
- School of Chemical and Biomolecular Engineering, Pusan National University, Busan 609-735, South Korea
| | - Hyun-Seog Roh
- Department of Environmental Engineering, Yonsei University, Wonju, Gangwon 220-710, South Korea
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 133-791, South Korea.
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Insights into microalgae mediated biodegradation of diazinon by Chlorella vulgaris : Microalgal tolerance to xenobiotic pollutants and metabolism. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.10.003] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Deng XY, Hu XL, Cheng J, Ma ZX, Gao K. Growth inhibition and oxidative stress induced by 1-octyl-3-methylimidazolium bromide on the marine diatom Skeletonema costatum. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2016; 132:170-177. [PMID: 27318558 DOI: 10.1016/j.ecoenv.2016.06.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 06/04/2016] [Accepted: 06/06/2016] [Indexed: 06/06/2023]
Abstract
Marine diatom Skeletonema costatum is an important prey in the marine food web and is often used as a standard test organism in ecotoxicological studies. In this study, in vivo experiments were performed to analyze the effects of 1-octyl-3-methylimidazolium bromide ([C8mim]Br) on the growth, photosynthetic activity, and oxidative stress in S. costatum using 96h growth tests with a batch-culture system. The growth of S. costatum was significantly inhibited by [C8mim]Br with 48 and 96h-EC50 of 17.9 and 39.9mgL(-1), respectively. The maximum quantum yield (Fv/Fm) and the light use efficiency (α) were inhibited by [C8mim]Br, which affected the growth of S. costatum. Subsequent biochemical assays in S. costatum revealed that [C8mim]Br induced changes of Chl a content, soluble protein content, and SOD activity, which had significant increases in low [C8mim]Br treatments (≤20mgL(-1)), but decreased in high [C8mim]Br exposures (≥40mgL(-1)). The increase of SOD activity at low concentrations (≤20mgL(-1)) may be considered as an active defense of S. costatum against [C8mim]Br stress by reactive oxygen species (ROS) quenching. In addition, [C8mim]Br increased ROS level and malondialdehyde (MDA) content in S. costatum, suggesting that the physiological effects of [C8mim]Br are resulted from ROS generation.
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Affiliation(s)
- Xiang-Yuan Deng
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212003, China.
| | - Xiao-Li Hu
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Jie Cheng
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Zhi-Xin Ma
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212003, China
| | - Kun Gao
- College of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang 212003, China
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Nuttens A, Chatellier S, Devin S, Guignard C, Lenouvel A, Gross E. Does nitrate co-pollution affect biological responses of an aquatic plant to two common herbicides? AQUATIC TOXICOLOGY 2016; 177:355-64. [PMID: 0 DOI: 10.1016/j.aquatox.2016.06.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 06/06/2016] [Accepted: 06/10/2016] [Indexed: 05/03/2023]
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Kaya A, Doganlar ZB. Exogenous jasmonic acid induces stress tolerance in tobacco (Nicotiana tabacum) exposed to imazapic. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2016; 124:470-479. [PMID: 26629659 DOI: 10.1016/j.ecoenv.2015.11.026] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 11/12/2015] [Accepted: 11/20/2015] [Indexed: 05/04/2023]
Abstract
Jasmonic acid (JA) is one of the important phytohormones, regulating the stress responses as well as plant growth and development. The aim of this study is to determine the effects of exogenous JA application on stress responses of tobacco plant exposed to imazapic. In this study, phytotoxic responses resulting from both imazapic and imazapic combined with JA treatment are investigated comparatively for tobacco plants. For plants treated with imazapic at different concentrations (0.030, 0.060 and 0.120mM), antioxidant enzyme activities (catalase, ascorbate peroxidase, glutathione S-transferase and glutathione reductase), carotenoids, glutathione and malondialdehyte (MDA) contents, jasmonic acid, abscisic acid and indole-3-acetic acid levels as well as herbicide residue amounts on leaves increased in general compared to the control group. In the plants treated with 45µM jasmonic acid, pigment content, antioxidant activity and phytohormone level increased whereas MDA content and the amount of herbicidal residue decreased compared to the non-treated plants. Our findings show that imazapic treatment induces some phytotoxic responses on tobacco leaves and that exogenous jasmonic acid treatment alleviates the negative effects of herbicide treatment by regulating these responses.
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Affiliation(s)
- Armagan Kaya
- Adiyaman University, Kahta Vocational School, Department of Plant and Animal Breeding, 02040 Adiyaman, Turkey.
| | - Zeynep Banu Doganlar
- Trakya University, Faculty of Medicine, Department of Medical Biology, 22030 Edirne, Turkey.
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Lu YC, Zhang JJ, Luo F, Huang MT, Yang H. RNA-sequencing Oryza sativa transcriptome in response to herbicide isoprotruon and characterization of genes involved in IPU detoxification. RSC Adv 2016. [DOI: 10.1039/c5ra25986j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The comprehensive analysis of transcriptome and UPLC-MS/MS in rice was performed to explore the regulatory mechanism of mRNA level and chemical metabolism in response to herbicide isoproturon.
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Affiliation(s)
- Yi Chen Lu
- Jiangsu Key Laboratory of Pesticide Science
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Jing Jing Zhang
- Jiangsu Key Laboratory of Pesticide Science
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Fang Luo
- Jiangsu Key Laboratory of Pesticide Science
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Meng Tian Huang
- Jiangsu Key Laboratory of Pesticide Science
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Hong Yang
- Jiangsu Key Laboratory of Pesticide Science
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
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Wang Y, Cheng ZZ, Chen X, Zheng Q, Yang ZM. CrGNAT gene regulates excess copper accumulation and tolerance in Chlamydomonas reinhardtii. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2015; 240:120-129. [PMID: 26475193 DOI: 10.1016/j.plantsci.2015.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 09/01/2015] [Accepted: 09/02/2015] [Indexed: 06/05/2023]
Abstract
Excess copper (Cu) in environment affects the growth and metabolism of plants and green algae. However, the molecular mechanism for regulating plant tolerance to excess Cu is not fully understood. Here, we report a gene CrGNAT enconding an acetyltransferase in Chlamydomonas reinhardtii and identified its role in regulating tolerance to Cu toxicity. Expression of CrGNAT was significantly induced by 75-400μM Cu. The top induction occurred at 100μM. Transgenic algae overexpressing CrGNAT (35S::CrGNAT) in C. reinhardtii showed high tolerance to excess Cu, with improved cell population, chlorophyll accumulation and photosynthesis efficiency, but with low degree of oxidation with regard to reduced hydrogen peroxide, lipid peroxides and non-protein thiol compounds. In contrast, CrGNAT knock-down lines with antisense led to sensitivity to Cu stress. 35S::CrGNAT algae accumulated more Cu and other metals (Zn, Fe, Cu, Mn and Mg) than wild-type, whereas the CrGNAT down-regulated algae (35S::AntiCrGNAT) had moderate levels of Cu and Mn, but no effects on Zn, Fe and Mg accumulation as compared to wild-type. The elevated metal absorption in CrGNAT overexpression algae implies that the metals can be removed from water media. Quantitative RT-PCR analysis revealed that expression of two genes encoding N-lysine histone methyltransferases was repressed in 35S::CrGNAT algae, suggesting that CrGNAT-regulated algal tolerance to Cu toxicity is likely associated with histone methylation and chromatin remodeling. The present work provided an example a basis to develop techniques for environmental restoration of metal-contaminated aquatic ecosystems.
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Affiliation(s)
- Ye Wang
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, China
| | - Zhen Zhen Cheng
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, China
| | - Xi Chen
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, China
| | - Qi Zheng
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, China
| | - Zhi Min Yang
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, China.
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40
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Cheng C, Huang L, Ma R, Zhou Z, Diao J. Enantioselective toxicity of lactofen and its metabolites in Scenedesmus obliquus. ALGAL RES 2015. [DOI: 10.1016/j.algal.2015.04.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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41
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Ding J, Lu G, Liu J, Zhang Z. Evaluation of the potential for trophic transfer of roxithromycin along an experimental food chain. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:10592-600. [PMID: 25739841 DOI: 10.1007/s11356-015-4265-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 02/20/2015] [Indexed: 04/15/2023]
Abstract
Pharmaceuticals have been recognized as a new class of environmental pollutants in recent years. But data about their potential for transfer and biomagnification in aquatic food chains are still lacking. In this study, bioaccumulation of the macrolide antibiotic roxithromycin (ROX) was determined in an experimental aquatic food chain involving the green algae Scenedesmus obliquus, the water flea Daphnia magna and the crucian carp Carassius auratus. After 48 h of exposure, S. obliquus accumulated ROX from media, with bioconcentration factors (BCFs) of 74.6, 46.3, and 24.5 l kg(-1) at nominal exposure concentrations of 4, 20, and 100 μg l(-1), respectively. After 48 h of feeding ROX-contaminated algae, D. magna was able to accumulate ROX in all three concentration treatments, but biomagnification did not occur at this trophic level, as biomagnification factors (BMFs) varied from 0.21 to 0.29 in different concentration treatments were well below one. In tissues (muscle, gill, liver, and bile) of C. auratus fed with contaminated daphnia for 8 days, no biomagnification was observed. However, this species did accumulate a certain degree of ROX through food chain transfer, and the tissue burden was greatest in the liver > muscle > gill and lowest in the bile. This work suggests that the trophic transfer should be a matter of concern for ecological risk assessments of pharmaceutical substances in aquatic food webs.
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Affiliation(s)
- Jiannan Ding
- Key Laboratory for Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
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González-Naranjo V, Boltes K, de Bustamante I, Palacios-Diaz P. Environmental risk of combined emerging pollutants in terrestrial environments: chlorophyll a fluorescence analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:6920-6931. [PMID: 25471719 DOI: 10.1007/s11356-014-3899-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: 09/17/2014] [Accepted: 11/20/2014] [Indexed: 06/04/2023]
Abstract
The risk assessment in terrestrial environments has been scarcely studied for mixtures of organic contaminants. To estimate toxicity due to these compounds, an ecotoxicological test may be done with the appropriate organism and biomarker. Photosynthesis is principally performed at photosystem II, and its efficiency is affected by any environmental stress. Consequently, the measure of this efficiency may be a good indicator of toxicity if different parameters are employed, e.g., the quantum efficiency of photosystem II and the photochemical quenching coefficient. We did a series of assays to determine the toxicity of two organic contaminants, ibuprofen and perfluorooctanoic acid, using a higher plant (Sorghum bicolor). The results showed more toxicity for the perfluorinated compound and greater sensibility for the quantum efficiency of photosystem II. Regarding the binary combination, three methods were applied to calculate EC50: combination index, concentration addition, and independent action. Synergistic behavior is the principal toxicological profile for this mix. Therefore, the combination index, which considers interactions among chemicals, gave the best estimation to determine risk indices. We conclude that the inhibition of photosynthesis efficiency can be a useful tool to determine the toxicity of the mixtures of organic pollutants and to estimate ecological risks in terrestrial environments.
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Affiliation(s)
- Víctor González-Naranjo
- Department of Chemical Engineering, University of Alcalá, 28771, Alcalá de Henares, Madrid, Spain,
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43
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Lu YC, Zhang S, Miao SS, Jiang C, Huang MT, Liu Y, Yang H. Enhanced degradation of Herbicide Isoproturon in wheat rhizosphere by salicylic acid. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:92-103. [PMID: 25495335 DOI: 10.1021/jf505117j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This study investigated the herbicide isoproturon (IPU) residues in soil, where wheat was cultivated and sprayed with salicylic acid (SA). Provision of SA led to a lower level of IPU residues in rhizosphere soil compared to IPU treatment alone. Root exudation of tartaric acid, malic acid, and oxalic acids was enhanced in rhizosphere soil with SA-treated wheat. We examined the microbial population (e.g., biomass and phospholipid fatty acid), microbial structure, and soil enzyme (catalase, phenol oxidase, and dehydrogenase) activities, all of which are associated with soil activity and were activated in rhizosphere soil of SA-treated wheat roots. We further assessed the correlation matrix and principal component to figure out the association between the IPU degradation and soil activity. Finally, six IPU degraded products (derivatives) in rhizosphere soil were characterized using ultraperformance liquid chromatography with a quadrupole-time-of-flight tandem mass spectrometer (UPLC/Q-TOF-MS/MS). A relatively higher level of IPU derivatives was identified in soil with SA-treated wheat than in soil without SA-treated wheat plants.
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Kabra AN, Ji MK, Choi J, Kim JR, Govindwar SP, Jeon BH. Toxicity of atrazine and its bioaccumulation and biodegradation in a green microalga, Chlamydomonas mexicana. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:12270-12278. [PMID: 24928381 DOI: 10.1007/s11356-014-3157-4] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 06/04/2014] [Indexed: 06/03/2023]
Abstract
This study evaluated the toxicity of herbicide atrazine, along with its bioaccumulation and biodegradation in the green microalga Chlamydomonas mexicana. At low concentration (10 μg L(-1)), atrazine had no profound effect on the microalga, while higher concentrations (25, 50, and 100 μg L(-1)) imposed toxicity, leading to inhibition of cell growth and chlorophyll a accumulation by 22 %, 33 %, and 36 %, and 13 %, 24 %, and 27 %, respectively. Atrazine 96-h EC50 for C. mexicana was estimated to be 33 μg L(-1). Microalga showed a capability to accumulate atrazine in the cell and to biodegrade the cell-accumulated atrazine resulting in 14-36 % atrazine degradation at 10-100 μg L(-1). Increasing atrazine concentration decreased the total fatty acids (from 102 to 75 mg g(-1)) and increased the unsaturated fatty acid content in the microalga. Carbohydrate content increased gradually with the increase in atrazine concentration up to 15 %. This study shows that C. mexicana has the capability to degrade atrazine and can be employed for the remediation of atrazine-contaminated streams.
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Affiliation(s)
- Akhil N Kabra
- Department of Environmental Engineering, Yonsei University, Wonju, 220-710, South Korea
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45
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Lu YC, Zhang S, Yang H. Acceleration of the herbicide isoproturon degradation in wheat by glycosyltransferases and salicylic acid. JOURNAL OF HAZARDOUS MATERIALS 2014; 283:806-814. [PMID: 25464323 DOI: 10.1016/j.jhazmat.2014.10.034] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Revised: 09/10/2014] [Accepted: 10/19/2014] [Indexed: 06/04/2023]
Abstract
Isoproturon (IPU) is a herbicide widely used to prevent weeds in cereal production. Due to its extensive use in agriculture, residues of IPU are often detected in soils and crops. Overload of IPU to crops is associated with human health risks. Hence, there is an urgent need to develop an approach to mitigate its accumulation in crops. In this study, the IPU residues and its degradation products in wheat were characterized using ultra performance liquid chromatography-time of fight tandem-mass spectrometer/mass spectrometer (UPLC-TOF-MS/MS). Most detected IPU-derivatives were sugar-conjugated. Degradation and glycosylation of IPU-derivatives could be enhanced by applying salicylic acid (SA). While more sugar-conjugated IPU-derivatives were identified in wheat with SA application, lower levels of IPU were detected, indicating that SA is able to accelerate intracellular IPU catabolism. All structures of IPU-derivatives and sugar-conjugated products were characterized. Comparative data were provided with specific activities and gene expression of certain glucosyltransferases. A pathway with IPU degradation and glucosylation was discussed. Our work indicates that SA-accelerated degradation is practically useful for wheat crops growing in IPU-contaminated soils because such crops with SA application can potentially lower or minimize IPU accumulation in levels below the threshold for adverse effects.
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Affiliation(s)
- Yi Chen Lu
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China; Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Shuang Zhang
- State key laboratory of food science and technology, Jiangnan University, Wuxi 214122, China
| | - Hong Yang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China.
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Kaya A, Yigit E. The physiological and biochemical effects of salicylic acid on sunflowers (Helianthus annuus) exposed to flurochloridone. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 106:232-238. [PMID: 24859709 DOI: 10.1016/j.ecoenv.2014.04.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 04/28/2014] [Accepted: 04/29/2014] [Indexed: 06/03/2023]
Abstract
In this study, we comparatively evaluated the effects of the flurochloridone as well as flurochloridone and exogenously applied salicylic acid (SA) on Helianthus annuus L. to find out herbicide-induced toxicity reducing influence of SA. We examined and compared the physiological and biochemical effects of different concentrations of flurochloridone (11, 32 and 72 mM) in both the SA pre-treated and non-treated plants. The plants treated with flurochloridone exhibited reduced total chlorophyll, carotenoid, and relative water content compared to the control group, whereas the plants that were pre-treated with SA exhibited relatively higher values for the same physiological parameters. In the SA non-treated plants, the superoxide dismutase, glutathione reductase and glutathione S-transferase activities were increased in the treatment groups compared to the control group. In the treatment groups, these enzyme activities were decreased in the SA-pre-treated plants compared to the non-treated plants. Ascorbate peroxidase and catalase activities decreased in the flurochloridone-treated plants compared to the control plants. The ascorbate peroxidase activity increased in the control groups but decreased in the treatment groups in the SA pre-treated plants compared to the non-treated plants. However, SA treatment decreased the activity of catalase in the control and treatment groups compared to the plants that were not treated with SA. Flurochloridone treatment increased the malondialdehyde content in the treated groups compared to the control groups, whereas SA-pretreatment decreased malondialdehyde content compared to plants that were not treated with SA. Flurochloridone treatment increased endogenous SA content compared to the control. Although the residual levels of herbicide in the plants increased proportionately with increasing herbicide concentrations, the SA-pre-treated plants exhibited reduced residual herbicide levels compared to the plants that were not treated with SA. These results indicate that the flurochloridone induces various physiological and biochemical responses in non-target plants and that treatment with exogenous SA can increase stress resistance by altering these responses.
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Affiliation(s)
- Armagan Kaya
- Department of Plant and Animal Breeding, Adiyaman University, Kahta Vocational School, 02040 Adiyaman, Turkey.
| | - Emel Yigit
- Department of Biology, Inonu University, Science and Art Faculty, Malatya, Turkey.
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47
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Ni Y, Lai J, Wan J, Chen L. Photosynthetic responses and accumulation of mesotrione in two freshwater algae. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2014; 16:2288-2294. [PMID: 25059419 DOI: 10.1039/c4em00254g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Mesotrione is a herbicide used for killing annual grasses and broad-leaved weeds in maize. A recent investigation has shown that mesotrione has been detected as an organic contaminant in aquatic environments and may have a negative impact on aquatic organisms. To evaluate the eco-toxicity of mesotrione to algae, experiments focusing on photosynthetic responses and mesotrione accumulation in Microcystis sp. and Scenedesmus quadricauda were carried out. Both algae treated with mesotrione at 0.05-10 mg L(-1) for 7 days reduced the photosynthetic capacity. The fluorescence of chlorophyll a, the maximal PSII activity (Fv/Fm), and the parameters (Ik, α and ETRmax) of rapid light curves (RLCs) in both algae were decreased under mesotrione exposure. The 96 h EC50 values for mesotrione on S. quadricauda and Microcystis sp. were 4.41 and 6.19 mg L(-1), respectively. The latter shows more tolerance to mesotrione. Mesotrione was shown to be readily accumulated by both species. Such uptake of mesotrione led to the rapid removal of mesotrione from the medium. Overall, this study represents the initial comprehensive analyses of Microcystis sp. and S. quadricauda in adaptation to the mesotrione contaminated aquatic ecosystems.
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Affiliation(s)
- Yan Ni
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Institute of Environmental and Chemical Engineering, Nanchang University, Jiangxi, China.
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Zheng Q, Cheng ZZ, Yang ZM. HISN3 mediates adaptive response of Chlamydomonas reinhardtii to excess nickel. PLANT & CELL PHYSIOLOGY 2013; 54:1951-62. [PMID: 24078767 DOI: 10.1093/pcp/pct130] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Investigation of genes for heavy metal [e.g. nickel (Ni) and zinc (Zn)] absorption and detoxification in green algae is of great importance because some of the metals have become one of the major contaminants in the aquatic ecosystem. In plants, overload of heavy metals modifies many aspects of biological processes. However, the mechanisms by which heavy metals exert detrimental effects are not fully understood. The present study identified a biological role for HISN3 (the gene coding for phosphoribosylformimino-5-aminoimidazole carboxamide ribonucleotide isomerase) in regulating the response of Chlamydomonas reinhardtii, a unicellular green alga, to Ni toxicity. In higher plants, HISN3 encodes an enzyme catalyzing the fourth step in the histidine biosynthesis pathway, but its functional importance is yet to be identified. Transgenic algae overexpressing HISN3 in C. reinhardtii showed high tolerance to excess Ni, with a 48.3-57.4% increase in cell population and moderate histidine accumulation compared with the wild type. HISN3 overexpression improved accumulation of Chl and photosynthesis efficiency, but suppressed Ni-induced generation of reactive oxygen species and lipid peroxides. Interestingly, more Ni and other metals [Zn, iron (Fe), copper (Cu), manganese (Mn) and magnesium (Mg)] were accumulated in HISN3-overexpressing cells than in the wild type. In contrast, RNA interference of HISN3 depressed Ni accumulation but caused cellular sensitivity to Ni. The elevated metal absorption in the HISN3-overexpressing algae implies that the metals can be removed from water media. Thus, our work presents an example for algae genetically designed to improve tolerance to metal toxicity and environmental restoration of metal-contaminated aquatic ecosystems.
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Affiliation(s)
- Qi Zheng
- Department of Biochemistry and Molecular Biology, College of Life Science, Nanjing Agricultural University, Nanjing, China
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