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Okagu IU, Okeke ES, Ezeorba WCF, Ndefo JC, Ezeorba TPC. Overhauling the ecotoxicological impact of synthetic pesticides using plants' natural products: a focus on Zanthoxylum metabolites. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:67997-68021. [PMID: 37148518 DOI: 10.1007/s11356-023-27258-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 04/23/2023] [Indexed: 05/08/2023]
Abstract
The reduction in agricultural production due to the negative impact of insects and weeds, as well as the health and economic burden associated with vector-borne diseases, has promoted the wide use of chemicals that control these "enemies." However, the use of these synthetic chemicals has been recognized to elicit negative impacts on the environment as well as the health and wellbeing of man. In this study, we presented an overview of recent updates on the environmental and health impacts of synthetic pesticides against agro-pest and disease vectors while exhaustive reviewing the potentials of natural plant products from Zanthoxylum species (Rutaceae) as sustainable alternatives. This study is expected to spur further research on exploiting these plants and their chemicals as safe and effective pesticide entities to minimize the impact of their chemical and synthetic counterparts on health and the environment.
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Affiliation(s)
- Innocent Uzochukwu Okagu
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria
| | - Emmanuel Sunday Okeke
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria
- Natural Science Unit, School of General Studies, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria
- Institute of Environmental Health and Ecological Security, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu, China
| | | | - Joseph Chinedum Ndefo
- Department of Science Laboratory Technology, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria
| | - Timothy Prince Chidike Ezeorba
- Department of Biochemistry, Faculty of Biological Sciences, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria.
- Department of Genetics and Biotechnology, Faculty of Biological Sciences, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria.
- Department of Molecular Biotechnology, School of Biosciences, University of Birmingham Edgbaston, Birmingham, B15 2TT, United Kingdom.
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Wu C, Wu X, Chen S, Wu D. A Newly Discovered Humic-Reducing Bacterium, Pseudomonas geniculata PQ01, Isolated From Paddy Soil Promotes Paraquat Anaerobic Transformation. Front Microbiol 2020; 11:2003. [PMID: 32983021 PMCID: PMC7490335 DOI: 10.3389/fmicb.2020.02003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 07/29/2020] [Indexed: 11/17/2022] Open
Abstract
Due to toxicity and persistence of paraquat (a widely used herbicide), eco-friendly remediation approaches to its contamination and effective antidotes to its poisoning have been highly desired and raised increasing concerns. Paraquat degradation was lesser in aerobic soil in comparison with anaerobic soil, and humic-reducing microorganisms (HRMs) play a key role in paraquat anaerobic transformation process. However, the degradation pathways and related mechanisms remain poorly understood. In this study, we investigated the specific interaction mechanisms of the paraquat transformation processes mediated by a humic-reducing strain under anaerobic conditions. A strain of pure culture, designated as PQ01, was successfully isolated from paddy soil using anaerobic enrichment procedure, and identified as Pseudomonas geniculata using phenotypic and phylogenetic analysis. Sucrose, glucose, pyruvate, formic acid, and acetic acid were shown to be favorable electron donors for the reduction of anthrahydroquinone-2,6-disulfonate (AQDS) reduction by PQ01. The strain also had the ability of reducing Fe(III) (hydr)oxides in the presence of sucrose with efficiencies in the order of ferrihydrite > α-FeOOH/γ-FeOOH > γ-Fe2O3 > α-Fe2O3. In the “PQ01 + paraquat + AQDS + sucrose” system, AQDS reduction and paraquat biotransformation by strain PQ01 occurred simultaneously, and the presence of sucrose significantly enhanced the biotransformation. Specific mechanisms of the electron transfer processes are promoted by both PQ01 and AQDS, and proceed in two aspects: (1) paraquat served as electron donor in the anaerobic reduction of AQDS by strain PQ01; (2) AQDS was reduced by PQ01 anaerobic metabolism to produce AH2QDS, which can directly react with paraquat under anaerobic conditions to generate a single crystal compound (molecular formula of the unit structure is C26H20N2O8S2), causing the paraquat to decline dramatically. In conclusion, this main mechanism included the microbial reduction of AQDS to AH2QDS, followed by the abiotic reaction between AH2QDS and paraquat. This study reported the new characteristics of P. geniculata capable of reducing humics analogs, Fe(III) (hydr)oxides, and paraquat, and proposed a novel electron transformation mechanism of the HRMs’ mediated degradation of organic contaminants.
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Affiliation(s)
- Chunyuan Wu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China.,Hainan Engineering Research Center for Non-point Source and Heavy Metal Pollution Control, Haikou, China.,Danzhou Scientific Observing and Experimental Station of Agro-Environment, Ministry of Agriculture, Danzhou, China
| | - Xiaoyan Wu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Shanshan Chen
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Dongming Wu
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China.,Hainan Engineering Research Center for Non-point Source and Heavy Metal Pollution Control, Haikou, China
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Oluah NS, Aguzie IO, Ekechukwu NE, Madu JC, Ngene CI, Oluah C. Hematological and immunological responses in the African catfish Clarias gairepinus exposed to sublethal concentrations of herbicide Ronstar®. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 201:110824. [PMID: 32544747 DOI: 10.1016/j.ecoenv.2020.110824] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 06/11/2023]
Abstract
The aim of the study was to investigate the effects of sublethal concentrations (0.3, 0.6 and 1.2 mg L-1) of the herbicide Ronstar on the hematology and some immune parameters in Clarias gariepinus juvenile (mean weight and length 58.72 ± 2.46 g and 27.60 ± 1.62 cm, respectively). The hematological and some immune parameters were studied for 21 days in a static renewal bioassay system in which the water and the herbicide were changed daily. The erythrocyte count, hemoglobin concentration (Hb), and packed cell volume (PCV) were significantly (p < 0.05) reduced in the treatment groups. When compared with the control, there were significant (p < 0.05) leucocytosis, lymphocytosis, neutropenia and monocytopenia in the treatment groups. Both the mean corpuscular hemoglobin (MCH) and mean corpuscular volume (MCV) were reduced ((p < 0.05) in the Ronstar-exposed fish. The result showed that the treated fish suffered hypochromic microcytic anemia. The total immunoglobulin and phagocytic indices (phagocytic capacity and phagocytic index) were significantly (p < 0.05) reduced in the treatment groups. while the respiratory burst was significantly (p < 0.05) increased in the treatment groups. The result showed that exposure to Ronstar had adverse effects on the hematology and immunocompetency of the fish.
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Affiliation(s)
- Ndubuisi Stanley Oluah
- Ecotoxicology Research Unit, Aquaculture and Marine Science Programme, Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Nigeria.
| | - Ifeanyi Oscar Aguzie
- Ecotoxicology Research Unit, Aquaculture and Marine Science Programme, Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Nigeria
| | - Nkiru Esther Ekechukwu
- Ecotoxicology Research Unit, Aquaculture and Marine Science Programme, Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Nigeria
| | - Josephine Chinenye Madu
- Ecotoxicology Research Unit, Aquaculture and Marine Science Programme, Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Nigeria
| | - Chinedu Innocent Ngene
- Ecotoxicology Research Unit, Aquaculture and Marine Science Programme, Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Nigeria
| | - Chidinma Oluah
- Department of Medical Biochemistry, College of Medicine, University of Nigeria, Enugu Campus, Nigeria
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Bojarski B, Witeska M. Blood biomarkers of herbicide, insecticide, and fungicide toxicity to fish-a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:19236-19250. [PMID: 32248419 DOI: 10.1007/s11356-020-08248-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 02/26/2020] [Indexed: 06/11/2023]
Abstract
Pesticides are widely used in the world agriculture, and they may adversely affect non-target organisms, including fish. The present 2000-2019 literature review summarizes hematological and blood biochemical effects of various herbicides, insecticides, and fungicides in fish. The observed changes usually indicate anemia and inflammation, as well as hyperglycemia, hypoproteinemia, increase in cortisol concentration and activities of hepatic aminotransferases that are typical for intoxication and stress. Other changes that are also sometimes observed such as increase in red blood parameters indicate compensatory response. The often-noted symptoms of immunosuppression show an adverse effect of pesticides on immune system and possible immunosuppression. Pathophysiological changes in fish induced by pesticides depend on many factors, such as active compound and its concentration, exposure duration, fish species, environmental conditions, etc. Hematological and blood biochemical parameters appear to be useful biomarkers for evaluation of physiological state of fish exposed to pesticides; however, they are not specific markers of intoxication.
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Affiliation(s)
- Bartosz Bojarski
- Department of Zoology and Animal Welfare, Faculty of Animal Science, University of Agriculture in Krakow, Mickiewicza 24/28, 30-059, Krakow, Poland.
| | - Małgorzata Witeska
- Siedlce University of Natural Sciences and Humanities, Faculty of Exact and Natural Sciences, Institute of Biological Sciences, Prusa 14, 08-110, Siedlce, Poland
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Fathy M, Mohamed IA, Farghal AIA, Temerak SAH, Sayed AEDH. Hemotoxic effects of some herbicides on juvenile of Nile tilapia Oreochromis niloticus. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:30857-30865. [PMID: 31446602 DOI: 10.1007/s11356-019-06280-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 08/16/2019] [Indexed: 02/07/2023]
Abstract
Recently, the residues of some common and widely used herbicides (acetochlor, bispyribac-sodium, bentazon, bensulfuron-methyl, halosulfuron-methyl, and quinclorac) were detected in the surface water, soil, sediments, and fish tissues as the agricultural drainage problems. In this study, juveniles of Nile tilapia Oreochromis niloticus were exposed to sub-lethal concentrations of these herbicides as 2.625, 0.800, 36.00, 2.50, 1.275, and 11.250 mg/l for acetochlor, bispyribac-sodium, bentazon, bensulfuron-methyl, halosulfuron-methyl, and quinclorac respectively for 96 h. Some hemato-biochemical parameters were evaluated. In comparison with the control group, sub-lethal concentrations of all tested herbicides induced alterations in the shape of erythrocytes. Also, in all tested herbicides, hematological parameters of exposed fish exhibited a significant decrease in red blood cell count except bentazon. However, all tested herbicides showed an insignificant reduction in mean corpuscular hemoglobin concentration and total white blood cells except bensulfuron-methyl. For biochemical parameters, most tested herbicides induced a significant increase in levels of cholesterol, albumin, globulin, albumin/globulin ratio, activity of alkaline phosphatase (ALP), alanine aminotransferase (ALT), aspartate aminotransferase (AST), and total plasma protein (only with acetochlor), urea, and creatinine (except bentazon and halosulfuron-methyl that exhibited non-significant decrease in creatinine level) compared with the control. In conclusion, the fish blood profiles can be used as good biomarkers for laboratory study to assess the toxicity of the tested rice herbicides at a sub-acute level especially acetochlor on O. niloticus. Graphical Abstract.
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Affiliation(s)
- Mohamed Fathy
- Plant Protection Department, Faculty of Agriculture, Assiut University, Assiut, 71526, Egypt
| | - Ibrahim A Mohamed
- Plant Protection Department, Faculty of Agriculture, Assiut University, Assiut, 71526, Egypt
| | - Ahmed I A Farghal
- Plant Protection Department, Faculty of Agriculture, Assiut University, Assiut, 71526, Egypt
| | - Sobhy A H Temerak
- Plant Protection Department, Faculty of Agriculture, Assiut University, Assiut, 71526, Egypt
| | - Alaa El-Din H Sayed
- Zoology Department, Faculty of Sciences, Assiut University, Assiut, 71516, Egypt.
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