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Khosrovyan A, Aghajanyan E, Avalyan R, Atoyants A, Sahakyan L, Gabrielyan B, Aroutiounian R. Assessment of the mutagenic potential of the water of an urban river by means of two Tradescantia-based test systems. MUTATION RESEARCH. GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2022; 876-877:503449. [PMID: 35483780 DOI: 10.1016/j.mrgentox.2022.503449] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 12/30/2021] [Accepted: 01/11/2022] [Indexed: 10/19/2022]
Abstract
River pollution can be caused by anthropogenic or natural factors. When testing water quality for the presence of toxic substances, higher plants as bioindicators for the genotoxic effects of complex mixtures are effective and appropriate. Hence, in this work the Tradescantia (clone 02) stamen hair mutations (Trad-SHM) and Tradescantia micronuclei (Trad-MCN) were used to determine mutagenic and clastogenic potential of an urban river. A significant increase in the level of all studied endpoints as well as morphological changes, including pink cells (PC) and colorless cells (CC) in stamen hairs, stunted hairs (SH), tetrads with micronuclei (MN) and MN in tetrads of pollen microspores in the Tradescantia was observed compared to the negative control (tap water). As an example riverine system, part of the River Hrazdan (Armenia) flowing through a highly urbanized and industrial area was studied. The positive control (10 mM CrO3) showed the highest genotoxicity for the SHM assay (PC: 5.1 / 1000, CC: 17.9 / 1000) and for the MCN assay (12 MN / 100 tetrads and 9.4 ± 0.53 tetrads with MN). Genetic responses were analyzed in conjunction with the concentrations of select elements in the riverine water. Reasons for observing such a high level of genetic markers in the riverine water and applicability of the Tradescantia (clone 02) test-systems in environmental risk assessment and biomonitoring are discussed.
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Affiliation(s)
- Alla Khosrovyan
- National Institute of Chemical Physics and Biophysics, Laboratory of Environmental Toxicology, Akadeemia Tee 23, Tallinn, 12612, Estonia.
| | - Evelina Aghajanyan
- Laboratory of General and Molecular Genetics, RI Biology, Faculty of Biology, Yerevan State University, 8, Charents Str., Yerevan, Armenia
| | - Rima Avalyan
- Laboratory of General and Molecular Genetics, RI Biology, Faculty of Biology, Yerevan State University, 8, Charents Str., Yerevan, Armenia
| | - Anahit Atoyants
- Laboratory of General and Molecular Genetics, RI Biology, Faculty of Biology, Yerevan State University, 8, Charents Str., Yerevan, Armenia
| | - Lilit Sahakyan
- Center for Ecological-Noosphere Studies, Abovyan 68, Yerevan, 0025, Armenia
| | - Bardukh Gabrielyan
- Scientific Center of Zoology and Hydroecology of the National Academy of Sciences of Armenia, Paruyr Sevak 7, Yerevan, 0014, Armenia
| | - Rouben Aroutiounian
- Laboratory of General and Molecular Genetics, RI Biology, Faculty of Biology, Yerevan State University, 8, Charents Str., Yerevan, Armenia
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Campos CF, Morelli S, De Campos Júnior EO, Santos VSV, De Morais CR, Cunha MC, Souto HN, Pavanin LA, Bonetti AM, Pereira BB. Assessment of the genotoxic potential of water courses impacted by wastewater treatment effluents using micronucleus assay in plants from the specie s Tradescantia. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2019; 82:752-759. [PMID: 31362592 DOI: 10.1080/15287394.2019.1648345] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Water pollution and the increase in genotoxic consequences in aquatic environments are well documented indicating the necessity and importance of biomonitoring programs. The objective of the present study was to determine the environmental quality of water resources and genotoxic potential of materials present within water samples obtained from the Perdizes River and the Mumbuca Stream, located in a region of discharge of wastewater treatment effluents using Tradescantia micronucleus assay (Trad - MCN). Water samples were collected from different locations up and downstream of the wastewater treatment plant during rainy season and subsequently submitted to physico-chemical analysis and Trad-MCN bioassay. The spatial distribution of the physico-chemical parameters assessed suggested that discharges of wastewater treatment effluents reduced water quality at all sites examined. Further, exposure to wastewater treatment effluents produced genotoxic effects on tetrads of Tradescantia pallida. These results reinforce the sensitivity of the Trad-MCN bioassay and its potential application in water quality monitoring programs concomitant with physicochemical evaluation.
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Affiliation(s)
- Carlos Fernando Campos
- Department of Genetics, Federal University of Uberlândia, Institute of Biotechnology , Uberlândia , Minas Gerais , Brazil
| | - Sandra Morelli
- Department of Genetics, Federal University of Uberlândia, Institute of Biotechnology , Uberlândia , Minas Gerais , Brazil
| | | | - Vanessa Santana Vieira Santos
- Department of Genetics, Federal University of Uberlândia, Institute of Biotechnology , Uberlândia , Minas Gerais , Brazil
| | - Cássio Resende De Morais
- Department of Genetics, Federal University of Uberlândia, Institute of Biotechnology , Uberlândia , Minas Gerais , Brazil
| | - Matheus Campos Cunha
- Department of Genetics, Federal University of Uberlândia, Institute of Biotechnology , Uberlândia , Minas Gerais , Brazil
| | - Henrique Nazareth Souto
- Department of Genetics, Federal University of Uberlândia, Institute of Biotechnology , Uberlândia , Minas Gerais , Brazil
| | - Luiz Alfredo Pavanin
- Department of Environmental Chemistry, Federal University of Uberlândia, Institute of Chemistry , Uberlândia , Minas Gerais , Brazil
| | - Ana Maria Bonetti
- Department of Genetics, Federal University of Uberlândia, Institute of Biotechnology , Uberlândia , Minas Gerais , Brazil
| | - Boscolli Barbosa Pereira
- Department of Genetics, Federal University of Uberlândia, Institute of Biotechnology , Uberlândia , Minas Gerais , Brazil
- Department of Environmental Health, Federal University of Uberlândia, Institute of Geography , Uberlândia , Minas Gerais , Brazil
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de Morais CR, Pereira BB, Almeida Sousa PC, Vieira Santos VS, Campos CF, Carvalho SM, Spanó MA, de Rezende AAA, Bonetti AM. Evaluation of the genotoxicity of neurotoxic insecticides using the micronucleus test in Tradescantia pallida. CHEMOSPHERE 2019; 227:371-380. [PMID: 30999177 DOI: 10.1016/j.chemosphere.2019.04.073] [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: 02/17/2019] [Revised: 04/09/2019] [Accepted: 04/10/2019] [Indexed: 06/09/2023]
Abstract
Neonicotinoids and phenylpyrazoles are classes of neurotoxic insecticides which are able to bind at different ligand sites of neural receptors, leading to the deregulation of insect neural activity and hence resulting in death. The misuse or indiscriminate use of these chemicals is directly associated with several toxicological effects in biota and at different trophic levels. Based on this premise, the aim of the present study was to evaluate and compare the genotoxic capacity of different concentrations of thiamethoxam (TMX), acetamiprid (ACP), imidacloprid (IMI) and fipronil (FP) through the Micronucleus Test in Tradescantia pallida (Trad-MCN). After acclimatization (24 h), T. pallida stems were treated with stablished concentrations of TMX, ACP, IMI and FP for 8 h. Then, the stems of the model organism were submitted to a recovery phase (24 h). The young inflorescences were harvested and fixed in Carnoy solution and, after 24 h, were conserved in ethanol 70% until the analyzes. The obtained anthers were macerated on slides for microscopy, stained with acetic carmine dye and covered with coverslips before analysis by light microscopy. Considering the insecticides, the micronuclei (MN) frequency in plants treated at concentrations of 0.2 and 0.4 g L-1 for TMX, 0.2; 0.4 and 0.8 g L-1 for ACP, 0.1; 0.2; 0.4; 0.8 and 1.6 g L-1 for IMI and 0.2; 0.4; 0.8 and 1.6 g L-1 for FP differed statistically (p < 0.05, Tukey) from the MN frequency of the negative control. All chemicals evaluated revealed genotoxic activity in T. pallida at the highest concentrations.
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Affiliation(s)
- Cássio Resende de Morais
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil; Department of Cell Biology, Carmelitana Mário Palmério Foundation, 38500-000, Monte Carmelo, Minas Gerais, Brazil
| | - Boscolli Barbosa Pereira
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil; Institute of Geography, Federal University of Uberlândia, Campus Santa Mônica, 38400-902, Uberlândia, Minas Gerais, Brazil.
| | | | - Vanessa Santana Vieira Santos
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil
| | - Carlos Fernando Campos
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil
| | - Stephan Malfitano Carvalho
- Department of Entomology, Federal University of Lavras, PO Box 3037, 37 200-000, Lavras, Minas Gerais, Brazil
| | - Mário Antônio Spanó
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil
| | - Alexandre Azenha Alves de Rezende
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil; Institute of Exact and Natural Sciences of Pontal, Federal University of Uberlândia, Campus Pontal, Ituiutaba, Minas Gerais, 38304-402, Brazil
| | - Ana Maria Bonetti
- Institute of Biotechnology, Federal University of Uberlândia, Campus Umuarama, 38900-402, Uberlândia, Minas Gerais, Brazil
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