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Panda DK, Das DP, Behera SK, Dhal NK. Review on the impact of cell phone radiation effects on green plants. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:565. [PMID: 38773047 DOI: 10.1007/s10661-024-12623-0] [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: 01/13/2024] [Accepted: 04/12/2024] [Indexed: 05/23/2024]
Abstract
The aim of this review is to assess the impact of cell phone radiation effects on green plants. Rapid progress in networking and communication systems has introduced frequency- and amplitude-modulated technologies to the world with higher allowed bands and greater speed by using high-powered radio generators, which facilitate high definition connectivity, rapid transfer of larger data files, and quick multiple accesses. These cause frequent exposure of cellular radiation to the biological world from a number of sources. Key factors like a range of frequencies, time durations, power densities, and electric fields were found to have differential impacts on the growth and development of green plants. As far as the effects on green plants are concerned in this review, alterations in their morphological characteristics like overall growth, canopy density, and pigmentation to physiological variations like chlorophyll fluorescence and change in membrane potential etc. have been found to be affected by cellular radiation. On the other hand, elevated oxidative status of the cell, macromolecular damage, and lipid peroxidation have been found frequently. On the chromosomal level, micronuclei formation, spindle detachments, and increased mitotic indexes etc. have been noticed. Transcription factors were found to be overexpressed in many cases due to the cellular radiation impact, which shows effects at the molecular level.
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Affiliation(s)
- Dinesh Kumar Panda
- Environment and Sustainability Department, CSIR-Institute of Minerals and Materials Technology, RRL Campus, Sachivalaya MargAcharya Vihar, Bhubaneswar, 751013, Odisha, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Debi Prasad Das
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Project Engineering and Instrumentation Department, CSIR-Institutes of Minerals and Materials Technology, Sachivalaya Marg , RRL Campus, Acharya Vihar, Bhubaneswar, 751013, Odisha, India
| | - Santosh Kumar Behera
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
- Project Engineering and Instrumentation Department, CSIR-Institutes of Minerals and Materials Technology, Sachivalaya Marg , RRL Campus, Acharya Vihar, Bhubaneswar, 751013, Odisha, India
| | - Nabin Kumar Dhal
- Environment and Sustainability Department, CSIR-Institute of Minerals and Materials Technology, RRL Campus, Sachivalaya MargAcharya Vihar, Bhubaneswar, 751013, Odisha, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Sharma A, Sharma S, Bahel S, Katnoria JK. A study on effects of cell phone tower-emitted non-ionizing radiations in an Allium cepa test system. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:261. [PMID: 38349609 DOI: 10.1007/s10661-024-12435-2] [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: 09/07/2023] [Accepted: 02/02/2024] [Indexed: 02/15/2024]
Abstract
Considering enormous growth in population, technical advancement, and added reliance on electronic devices leading to adverse health effects, in situ simulations were made to evaluate effects of non-ionizing radiations emitted from three cell phone towers (T1, T2, and T3) of frequency bands (800, 1800, 2300 MHz), (900, 1800, 2300 MHz), and (1800 MHz), respectively. Five sites (S1-S5) were selected near cell phone towers exhibiting different power densities. The site with zero power density was considered as control. Effects of radiations were studied on morphology; protein content; antioxidant enzymes like ascorbate peroxidase (APX), superoxide dismutase (SOD), glutathione-S-transferase (GST), guaiacol peroxidase (POD), and glutathione reductase (GR); and genotoxicity using Allium cepa. Mean power density (μW/cm2) was recorded as 1.05, 1.18, 1.6, 2.73, and 12.9 for sites 1, 2, 3, 4, and 5, respectively. A significant change in morphology, root length, fresh weight, and dry weight in Allium cepa was observed under the exposure at different sites. Protein content of roots showed significant difference for samples at all sites while bulbs at sites S4 and S5 when compared to control. Antioxidant activity for root in terms of APX, GST, and POD showed significant changes at S4 and S5 and GR at site S5 and SOD at S1, S2, S3, S4, and S5. Similarly, bulbs showed significant changes at sites S4 and S5 for APX while at sites S3, S4, and S5 for POD and S2, S3, S4, and S5 for SOD and S5 for GR and GST. Genotoxicity study has shown induction of abnormalities at different stages of the cell cycle in Allium cepa root tips. The samples under exposure to radiation with maximum power density have shown maximum induction of oxidative stress and genotoxicity.
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Affiliation(s)
- Ankita Sharma
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, 143005, India
| | - Surbhi Sharma
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, 143005, India
| | - Shalini Bahel
- Department of Electronics Technology, Guru Nanak Dev University, Amritsar, Punjab, 143005, India
| | - Jatinder Kaur Katnoria
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, 143005, India.
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Handa AP, Vian A, Singh HP, Kohli RK, Kaur S, Batish DR. Effect of 2850 MHz electromagnetic field radiation on the early growth, antioxidant activity, and secondary metabolite profile of red and green cabbage (Brassica oleracea L.). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:7465-7480. [PMID: 38159189 DOI: 10.1007/s11356-023-31434-3] [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: 05/10/2023] [Accepted: 12/04/2023] [Indexed: 01/03/2024]
Abstract
The proliferation of wireless and other telecommunications equipment brought about by technological advances in the communication industry has substantially increased the radiofrequency radiation levels in the environment. The emphasis is, therefore, placed on investigating the potential impacts of radiofrequency radiation on biota. In this work, the impact of 2850 MHz electromagnetic field radiation (EMF-r) on early development, photosynthetic pigments, and the metabolic profile of two Brassica oleracea L. cultivars (red and green cabbage) was studied. On a daily basis for seven days, seedlings were exposed to homogeneous EMF-r for one, two, and four hours, and observations were carried out at 0-h, 1-h, and 24-h following the final dose. Irrespective of the duration of harvest, exposure to EMF-r resulted in a dose-dependent reduction in both root (from 6.3 cm to 4.0 cm in red; 6.1 cm to 3.8 cm in green) and shoot lengths (from 5.3 cm to ⁓3.1 cm in red; 5.1 cm to 3.1 cm in green), as well as a decrease in biomass (from 2.9 mg to ⁓1.1 mg in red; 2.5 to 0.9 mg in green) of the seedlings when compared to control samples. Likewise, the chlorophyll (from 6.09 to ⁓4.94 mg g-1 d.wt in red; 7.37 to 6.05 mg g-1 d.wt. in green) and carotenoid (from 1.49 to 1.19 mg g-1 d.wt. in red; 1.14 to 0.51 mg g-1 d.wt. in green) contents of both cultivars decreased significantly when compared to the control. Additionally, the contents of phenolic (28.99‒45.52 mg GAE g-1 in red; 25.49‒33.76 mg GAE g-1 in green), flavonoid (21.7‒31.8 mg QE g-1 in red; 12.1‒19.0 mg QE g-1 in green), and anthocyanin (28.8‒43.6 mg per 100 g d.wt. in red; 1.1‒2.6 mg per 100 g d.wt. in green) in both red and green cabbage increased with exposure duration. EMF-r produced oxidative stress in the exposed samples of both cabbage cultivars, as demonstrated by dose-dependent increases in the total antioxidant activity (1.33‒2.58 mM AAE in red; 1.29‒2.22 mM AAE in green), DPPH activity (12.96‒78.33% in red; 9.62‒67.73% in green), H2O2 content (20.0‒77.15 nM g-1 f.wt. in red; 14.28‒64.29 nM g-1 f.wt. in green), and MDA content (0.20‒0.61 nM g-1 f.wt. in red; 0.18‒0.51 nM g-1 f.wt. in green) compared to their control counterparts. The activity of antioxidant enzymes, i.e., superoxide dismutases (3.83‒8.10 EU mg-1 protein in red; 4.19‒7.35 EU mg-1 protein in green), catalases (1.81‒7.44 EU mg-1 protein in red; 1.04‒6.24 EU mg-1 protein in green), and guaiacol peroxidases (14.37‒47.85 EU mg-1 protein in red; 12.30‒42.79 EU mg-1 protein in green), increased significantly compared to their control counterparts. The number of polyphenols in unexposed and EMF-r exposed samples of red cabbage was significantly different. The study concludes that exposure to 2850 MHz EMF-r affects the early development of cabbage seedlings, modifies their photosynthetic pigments, alters polyphenol content, and impairs their oxidative metabolism.
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Affiliation(s)
- Amrit Pal Handa
- Department of Botany, Panjab University, Chandigarh, 160 014, India
| | - Alain Vian
- IRHS, Université d'Angers, Agrocampus-Ouest, INRA, SFR 4207 QuaSaV, 49071, 13, Beaucouzé, France
| | - Harminder Pal Singh
- Department of Environment Studies, Panjab University, Chandigarh, 160 014, India
| | - Ravinder Kumar Kohli
- Amity University, Sector 82A, IT City, International Airport Road, Mohali, 140 306, India
| | - Shalinder Kaur
- Department of Botany, Panjab University, Chandigarh, 160 014, India.
| | - Daizy R Batish
- Department of Botany, Panjab University, Chandigarh, 160 014, India
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Čėsnienė I, Miškelytė D, Novickij V, Mildažienė V, Sirgedaitė-Šėžienė V. Seed Treatment with Electromagnetic Field Induces Different Effects on Emergence, Growth and Profiles of Biochemical Compounds in Seven Half-Sib Families of Silver Birch. PLANTS (BASEL, SWITZERLAND) 2023; 12:3048. [PMID: 37687295 PMCID: PMC10490157 DOI: 10.3390/plants12173048] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 08/10/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023]
Abstract
In the context of climate change, strategies aimed at enhancing trees' resistance to biotic and abiotic stress are particularly relevant. We applied an electromagnetic field (EMF) seed treatment to observe changes in the establishment and content of biochemical compounds in silver birch seedlings induced by a short (1 min) seed exposure to a physical stressor. The impact of EMF treatment was evaluated on seedling emergence and growth of one-year-old and two-year-old seedlings from seven half-sib families of silver birch. The effects on numerous biochemical parameters in seedling leaves, such as total phenolic content (TPC), total flavonoid content (TFC), amounts of photosynthetic pigments, total soluble sugars (TSS), level of lipid peroxidation level, antioxidant activity and activity of antioxidant enzymes, were compared using spectrophotometric methods. The results indicated that, in one-year-old seedlings, two of seven (60th and 73rd) half-sib families exhibited a positive response to seed treatment with EMFs in nearly all analyzed parameters. For example, in the 60th family, seed treatment with EMFs increased the percentage of emergence by 3 times, one-year-old seedling height by 71%, leaf TPC by 47%, antioxidant activity by 2 times and amount of chlorophyll a by 4.6 times. Meanwhile, the other two (86th and 179th) families exhibited a more obvious positive response to EMF in two-year-old seedlings as compared to one-year-old seedling controls. The results revealed that short-term EMF treatment of silver birch seeds can potentially be used to improve seedling emergence and growth and increase the content of secondary metabolites, antioxidant capacity and photosynthetic pigments. Understanding of the impact of EMFs as well as the influence of genetic differences on tree responses can be significant for practical applications in forestry. Genetic selection of plant genotypes that exhibit positive response trends can open the way to improve the quality of forest stands.
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Affiliation(s)
- Ieva Čėsnienė
- Institute of Forestry, Lithuanian Research Centre for Agriculture and Forestry, Liepų 1, LT-53101 Girionys, Lithuania;
| | - Diana Miškelytė
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, LT-53361 Kaunas, Lithuania;
| | - Vitalij Novickij
- Institute of High Magnetic Fields, Vilnius Gediminas Technical University, Saulėtekio al. 11, LT-10223 Vilnius, Lithuania;
- Department of Immunology, State Research Institute Centre for Innovative Medicien, Santariskiu g. 5, LT-08406 Vilnius, Lithuania
| | - Vida Mildažienė
- Faculty of Natural Sciences, Vytautas Magnus University, Universiteto 10, LT-53361 Kaunas, Lithuania;
| | - Vaida Sirgedaitė-Šėžienė
- Institute of Forestry, Lithuanian Research Centre for Agriculture and Forestry, Liepų 1, LT-53101 Girionys, Lithuania;
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Tran NT, Jokic L, Keller J, Geier JU, Kaldenhoff R. Impacts of Radio-Frequency Electromagnetic Field (RF-EMF) on Lettuce ( Lactuca sativa)-Evidence for RF-EMF Interference with Plant Stress Responses. PLANTS (BASEL, SWITZERLAND) 2023; 12:1082. [PMID: 36903942 PMCID: PMC10005510 DOI: 10.3390/plants12051082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/22/2023] [Accepted: 02/27/2023] [Indexed: 06/18/2023]
Abstract
The increased use of wireless technology causes a significant exposure increase for all living organisms to radio frequency electromagnetic fields (RF-EMF). This comprises bacteria, animals, and also plants. Unfortunately, our understanding of how RF-EMF influences plants and plant physiology remains inadequate. In this study, we examined the effects of RF-EMF radiation on lettuce plants (Lactuca sativa) in both indoor and outdoor environments using the frequency ranges of 1890-1900 MHz (DECT) at 2.4 GHz and 5 GHz (Wi-Fi). Under greenhouse conditions, RF-EMF exposure had only a minor impact on fast chlorophyll fluorescence kinetics and no effect on plant flowering time. In contrast, lettuce plants exposed to RF-EMF in the field showed a significant and systemic decrease in photosynthetic efficiency and accelerated flowering time compared to the control groups. Gene expression analysis revealed significant down-regulation of two stress-related genes in RF-EMF-exposed plants: violaxanthin de-epoxidase (VDE) and zeaxanthin epoxidase (ZEP). RF-EMF-exposed plants had lower Photosystem II's maximal photochemical quantum yield (FV/FM) and non-photochemical quenching (NPQ) than control plants under light stress conditions. In summary, our results imply that RF-EMF might interfere with plant stress responses and reduced plant stress tolerance.
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Affiliation(s)
- Nam Trung Tran
- Applied Plant Sciences, Department of Biology, Technical University Darmstadt, 64287 Darmstadt, Germany
| | - Luca Jokic
- Applied Plant Sciences, Department of Biology, Technical University Darmstadt, 64287 Darmstadt, Germany
| | | | | | - Ralf Kaldenhoff
- Applied Plant Sciences, Department of Biology, Technical University Darmstadt, 64287 Darmstadt, Germany
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6
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Sharma S, Bahel S, Kaur Katnoria J. Evaluation of oxidative stress and genotoxicity of 900 MHz electromagnetic radiations using Trigonella foenum-graecum test system. PROTOPLASMA 2023; 260:209-224. [PMID: 35546647 DOI: 10.1007/s00709-022-01768-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 04/24/2022] [Indexed: 06/15/2023]
Abstract
Unprecedented growth in the communication sector and expanded usage of the number of wireless devices in the past few decades have resulted in a tremendous increase in emissions of non-ionizing electromagnetic radiations (EMRs) in the environment. The widespread EMRs have induced many significant changes in biological systems leading to oxidative stress as well as DNA damage. Considering this, the present study was planned to study the effects of EMRs at 900 MHz frequency with the power density of 10.0 dBm (0.01 W) at variable exposure periods (0.5 h, 1 h, 2 h, 4 h, and 8 h per day for 7 days) on percentage germination, morphological characteristics, protein content, lipid peroxidation in terms of malondialdehyde content (MDA), and antioxidant defense system of Trigonella foenum-graecum test system. The genotoxicity was also evaluated using similar conditions. It was observed that EMRs significantly decreased the germination percentage at an exposure time of 4 h and 8 h. Fresh weight and dry weight of root and shoot did not show significant variations, while the root and shoot length have shown significant variations for 4 h and 8 h exposure period. Further, EMRs enhanced MDA indicating lipid peroxidation. In response to exposure of EMRs, there was a significant up-regulation in the activities of enzymes such as ascorbate peroxidase (APX), superoxide dismutase (SOD), glutathione-S-transferase (GST), guaiacol peroxidase (POD), and glutathione reductase (GR) in the roots and shoots of Trigonella-foenum graecum. The genotoxicity study showed the induction of chromosomal aberrations in root tip cells of the Trigonella foenum-graecum test system. The present study revealed the induction of oxidative stress and genotoxicity of EMRs exposure in the test system.
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Affiliation(s)
- Surbhi Sharma
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005, India
| | - Shalini Bahel
- Department of Electronics Technology, Guru Nanak Dev University, Amritsar, 143005, India
| | - Jatinder Kaur Katnoria
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005, India.
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González-Vidal A, Mercado-Sáenz S, Burgos-Molina AM, Sendra-Portero F, Ruiz-Gómez MJ. Growth alteration of Allium cepa L. roots exposed to 1.5 mT, 25 Hz pulsed magnetic field. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2022; 32:2471-2483. [PMID: 34474627 DOI: 10.1080/09603123.2021.1972090] [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: 05/25/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
The response of plants to magnetic fields (MF) is not fully understood. This work studies the effects of pulsed MF on the germination and growth of Allium cepa roots. Onions were exposed to 25Hz, 1.5mT, 33h. Pulsed MF was generated by a Helmholtz-type equipment that generated rectangular voltage pulses. The results showed that fewer roots grew in the specimens exposed to pulsed MF (14±6 roots on day 1 to 21±8 on day 4) than in the control groups (32±17 to 48±23) (p<0.05 Friedman). Control specimens showed a root mean length of 7±4 mm (day 1) and 24±10 mm (day 4). The specimens treated with pulsed MF showed a length of 4±2 mm (day 1), reaching 18±9 mm on day 4 (p<0.001 ANOVA). In conclusion, the exposure of Allium cepa specimens to 25Hz, 1.5mT pulsed MF during 33h produces a decrease in the germination and growth of roots.
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Affiliation(s)
- Alejandro González-Vidal
- Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Málaga, Málaga, España
| | - Silvia Mercado-Sáenz
- Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Málaga, Málaga, España
| | - Antonio M Burgos-Molina
- Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Málaga, Málaga, España
| | - Francisco Sendra-Portero
- Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Málaga, Málaga, España
| | - Miguel J Ruiz-Gómez
- Departamento de Radiología y Medicina Física, Facultad de Medicina, Universidad de Málaga, Málaga, España
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de Souza RB, de Souza CP, Guimarães JR. Environmentally realistic concentrations of eprinomectin induce phytotoxic and genotoxic effects in Allium cepa. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:80983-80993. [PMID: 35727508 PMCID: PMC9209316 DOI: 10.1007/s11356-022-21403-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
Eprinomectin, a veterinary drug within the family of avermectins, is widely used in the agricultural sector to combat a variety of parasites, mainly nematodes. However, only 10% of the drug is metabolized in the organism, so large quantities of the drug are released into the environment through urine and/or feces. Soil is the first and main environmental compartment to be contaminated by it, and nontargeted organisms can be affected. Thus, the present study aims to evaluate the phytotoxicity (through the evaluation of germination, root development, and germination speed) and genotoxicity (through an assessment of the induction of micronuclei and chromosomal aberrations) of eprinomectin. For the analyses, Allium cepa seeds were germinated in soil contaminated with a range of concentrations of eprinomectin: from 0.5 to 62.5 μg/g for the genotoxicity test and from 0.5 to 128.0 μg/g for the phytotoxicity test. The results showed that seed germination was not affected, but root development was affected at concentrations of 0.5 μg/g, 1.0 μg/g, 4.0 μg/g, 8.0 μg/g, 64.0 μg/g, and 128.0 μg/g, and germination speed was significantly changed at concentrations of 1.0 μg/g, 4.0 μg/g, 16.0 μg/g, 32.0 μg/g, and 64.0 μg/g. Significant differences in the mitotic index and genotoxicity index were observed only at concentrations of 2.5 μg/g and 12.5 μg/g, respectively. Only the 0.5 μg/g concentration did not show significant induction of micronuclei in the meristematic cells, but the damage observed at other concentrations did not persist in F1 cells. According to the results, eprinomectin is both phytotoxic and genotoxic, so the release of eprinomectin into the environment should be minimized.
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Affiliation(s)
- Raphael B de Souza
- School of Civil Engineering, Architecture and Urban Design, University of Campinas, Campinas, Brazil.
| | | | - José Roberto Guimarães
- School of Civil Engineering, Architecture and Urban Design, University of Campinas, Campinas, Brazil
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Lai H, Levitt BB. The roles of intensity, exposure duration, and modulation on the biological effects of radiofrequency radiation and exposure guidelines. Electromagn Biol Med 2022; 41:230-255. [PMID: 35438055 DOI: 10.1080/15368378.2022.2065683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this paper, we review the literature on three important exposure metrics that are inadequately represented in most major radiofrequency radiation (RFR) exposure guidelines today: intensity, exposure duration, and signal modulation. Exposure intensity produces unpredictable effects as demonstrated by nonlinear effects. This is most likely caused by the biological system's ability to adjust and compensate but could lead to eventual biomic breakdown after prolonged exposure. A review of 112 low-intensity studies reveals that biological effects of RFR could occur at a median specific absorption rate of 0.0165 W/kg. Intensity and exposure duration interact since the dose of energy absorbed is the product of intensity and time. The result is that RFR behaves like a biological "stressor" capable of affecting numerous living systems. In addition to intensity and duration, man-made RFR is generally modulated to allow information to be encrypted. The effects of modulation on biological functions are not well understood. Four types of modulation outcomes are discussed. In addition, it is invalid to make direct comparisons between thermal energy and radiofrequency electromagnetic energy. Research data indicate that electromagnetic energy is more biologically potent in causing effects than thermal changes. The two likely functionthrough different mechanisms. As such, any current RFR exposure guidelines based on acute continuous-wave exposure are inadequate for health protection.
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Affiliation(s)
- Henry Lai
- Department of Bioengineering, University of Washington, Seattle, WA, USA
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Kundu A, Vangaru S, Bhowmick S, Bhattacharyya S, Mallick AI, Gupta B. One-time Electromagnetic Irradiation Modifies Stress-sensitive Gene Expressions in Rice Plant. Bioelectromagnetics 2021; 42:649-658. [PMID: 34559898 DOI: 10.1002/bem.22374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 07/17/2021] [Accepted: 09/09/2021] [Indexed: 12/23/2022]
Abstract
Electromagnetic energy is utilized over multiple frequency bands to provide seamless wireless communication services. Plants can well perceive electromagnetic energy present in open environment due to reasonably high permittivity and electrical conductivity of constituent tissues. Moreover, higher surface-to-volume ratio of plant structure facilitates increased interaction with the incident electromagnetic waves. To date, a few well-designed studies have been conducted inside controlled electromagnetic reverberation chambers to investigate either short duration-low amplitude or long duration-periodic electromagnetic irradiation-induced molecular responses in plants. However, as far as is known, studies investigating molecular responses particularly at the mid-vegetative stage in plants following one-time (hours-long) electromagnetic irradiation have not been reported earlier. Hence, the present study aimed at investigating molecular responses in 40-day-old Swarnaprabha rice plants following one-time 1837.50 MHz, 2.75 mW/m2 electromagnetic irradiation of 2 h 30 min duration. Controlled electromagnetic irradiation inside a simple reverberation chamber was ensured to achieve pure electromagnetic environment at 1837.50 MHz with deterministic electromagnetic power density at selected position. Swarnaprabha rice plant was chosen for this investigation since the rice variety is widely cultivated and consumed in the Indian subcontinent. Subsequent alterations in some selected stress-sensitive gene expressions were assayed using real-time quantitative polymerase chain reaction technique-significant upregulation in calmodulin and phytochrome B gene expressions were noted. This investigation was purposefully focused on subsequent molecular responses immediately following electromagnetic irradiation so that the possible effects of secondary stimulations could be avoided. Observed molecular responses strongly suggested that plants perceive 1837.50 MHz, 2.75 mW/m2 electromagnetic irradiation similar to other injurious stimuli. © 2021 Bioelectromagnetics Society.
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Affiliation(s)
- Ardhendu Kundu
- Electronics and Telecommunication Engineering Department, Jadavpur University, Kolkata, India
| | - Sathish Vangaru
- Department of Genetics and Plant Breeding, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, India
| | - Sucharita Bhowmick
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, India
| | - Somnath Bhattacharyya
- Department of Genetics and Plant Breeding, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, India
| | - Amirul I Mallick
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, India
| | - Bhaskar Gupta
- Electronics and Telecommunication Engineering Department, Jadavpur University, Kolkata, India
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Magnetic Field Treatments Improves Sunflower Yield by Inducing Physiological and Biochemical Modulations in Seeds. Molecules 2021; 26:molecules26072022. [PMID: 33916293 PMCID: PMC8036579 DOI: 10.3390/molecules26072022] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/26/2021] [Accepted: 03/29/2021] [Indexed: 01/09/2023] Open
Abstract
Magnetic seed enhancement has been practicing as a promising tool to improve germination and seedling growth of low vigor seeds stored under suboptimal conditions, but there is still ambiguity regarding the prospects for magnetism in oilseeds. Present study elucidates the potential of magnetic seed stimulation to improve sunflower germination, growth and yield. Germination and emergence tests were performed to optimize the strength of the magnetic field to sunflower seed enhancement. The seeds were directly exposed to magnetic field strengths of 50, 100 and 150 millitesla (mT) for 5, 10 and 15 min (min) and then standard germination tests were performed. Secondly, the emergence potential of untreated seeds was compared with seed exposed to hydropriming, priming with 3% moringa leaf extract (MLE), priming with magnetically treated water (MTW) for 10 min and priming with 3% MLE solution prepared in magnetically treated water (MTW + MLE). Germination, emergence, seedling growth and seed biochemical properties were used to select the best treatment for field evaluation. The results of the study revealed that magnetic seed treatment with 100 mT for 10 min and seed priming with 3% MLE solution in magnetically treated water (MTW + MLE) significantly improved emergence, crop growth rate and sunflower yield.
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Abstract
This is a review of the research on the genetic effects of non-ionizing electromagnetic field (EMF), mainly on radiofrequency radiation (RFR) and static and extremely low frequency EMF (ELF-EMF). The majority of the studies are on genotoxicity (e.g., DNA damage, chromatin conformation changes, etc.) and gene expression. Genetic effects of EMF depend on various factors, including field parameters and characteristics (frequency, intensity, wave-shape), cell type, and exposure duration. The types of gene expression affected (e.g., genes involved in cell cycle arrest, apoptosis and stress responses, heat-shock proteins) are consistent with the findings that EMF causes genetic damages. Many studies reported effects in cells and animals after exposure to EMF at intensities similar to those in the public and occupational environments. The mechanisms by which effects are induced by EMF are basically unknown. Involvement of free radicals is a likely possibility. EMF also interacts synergistically with different entities on genetic functions. Interactions, particularly with chemotherapeutic compounds, raise the possibility of using EMF as an adjuvant for cancer treatment to increase the efficacy and decrease side effects of traditional chemotherapeutic drugs. Other data, such as adaptive effects and mitotic spindle aberrations after EMF exposure, further support the notion that EMF causes genetic effects in living organisms.
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Affiliation(s)
- Henry Lai
- Department of Bioengineering, University of Washington, Seattle, WA, USA
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Kundu A, Vangaru S, Bhattacharyya S, Mallick AI, Gupta B. Electromagnetic Irradiation Evokes Physiological and Molecular Alterations in Rice. Bioelectromagnetics 2021; 42:173-185. [PMID: 33427347 DOI: 10.1002/bem.22319] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 12/14/2020] [Accepted: 12/27/2020] [Indexed: 12/27/2022]
Abstract
Electromagnetic energy is the "backbone" of wireless communication systems, and its progressive use is considered to have a low but measurable impact on a wide range of biological systems. Even though a growing amount of data has reported electromagnetic energy absorption in humans along with subsequent biological effects, the consequences of electromagnetic energy absorption on plants have been insufficiently addressed. The higher surface to volume ratio along with the enormous water-ion concentrations makes the plant an ideal model to interact with non-ionizing electromagnetic radiation. In this study, controlled and periodic electromagnetic exposure of 1837.50 MHz, 2.75 W/m2 for 6 h a day on a popular rice variety (var. Satabdi) reduced the seed germination rate. The same dose of periodic electromagnetic exposure upregulated phytochrome B and phytochrome C gene transcripts in 12-day-old seedlings, whereas, in 32-day-old plants, the dose upregulated calmodulin and phytochrome C while the bZIP1 gene showed repression. However, the transcript abundance of bZIP1, phytochrome B, and phytochrome C genes was enhanced even in 12-day-old Satabdi seedlings following instantaneous short-duration (2 h 30 min) controlled electromagnetic exposure to 1837.50 MHz, 2.75 W/m2 . The reported responses in rice were observed below the international electromagnetic regulatory limits. Thus, rice plants perceived electromagnetic energy emitted by the wireless communication system as abiotic stress as per its response by upregulation or repression of known stress-sensing genes. Bioelectromagnetics. © 2020 Bioelectromagnetics Society.
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Affiliation(s)
- Ardhendu Kundu
- Department of Electronics and Telecommunication Engineering, Jadavpur University, Kolkata, India
| | - Sathish Vangaru
- Department of Genetics and Plant Breeding, Bidhan Chandra Krishi Viswavidyalaya, West Bengal, India
| | - Somnath Bhattacharyya
- Department of Genetics and Plant Breeding, Bidhan Chandra Krishi Viswavidyalaya, West Bengal, India
| | - Amirul I Mallick
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, India
| | - Bhaskar Gupta
- Department of Electronics and Telecommunication Engineering, Jadavpur University, Kolkata, India
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Ergin T, Inceer H, Ergin B. Investigation of Antimutagenic Effect of Rosa canina L. Against Linuron Induced DNA Damage on Root Meristematic Cells of Allium cepa L. CYTOLOGIA 2020. [DOI: 10.1508/cytologia.85.233] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Tugba Ergin
- Karadeniz Technical University, Faculty of Sciences, Department of Biology
| | - Huseyin Inceer
- Karadeniz Technical University, Faculty of Sciences, Department of Biology
| | - Betul Ergin
- Karadeniz Technical University, Faculty of Sciences, Department of Biology
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15
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Çıldır DS, Liman R. Cytogenetic and genotoxic assessment in Allium cepa exposed to imazalil fungicide. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:20335-20343. [PMID: 32242316 DOI: 10.1007/s11356-020-08553-2] [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: 11/11/2019] [Accepted: 03/23/2020] [Indexed: 06/11/2023]
Abstract
Imazalil (IMZ), a fungicide containing imidazole group, is extensively used for the prevention and treatment of fungal diseases in plants. Current study was performed to examine cyto-genotoxic potential of IMZ on Allium cepa roots by following Allium ana-telophase and single cell gel electrophoresis (comet) assays. The concentration which reduced the growth of the root tips of IMZ by 50% compared to the negative control group (EC50) was found to be 1 μg/mL by Allium root growth inhibition test. 0.5, 1, and 2 μg/mL concentrations of IMZ were exposed to Allium roots for intervals of 24, 48, 72, and 96 h. 10 μg/mL of methyl methane sulfonate (MMS) and distilled water were used as control groups, both positive and negative. Statistical analysis was performed by using one-way ANOVA with Duncan's multiple comparison tests at p ≤ 0.05 and Pearson correlation test at p = 0.01. IMZ showed cytotoxic effect by statistically decreasing root growth and mitotic index (MI) and also genotoxic effect by statistically increasing chromosomal aberrations (CAs) and DNA damage compared to the negative control group. With these cyto-genotoxic effects, it should be used carefully and further cyto-genotoxic mechanisms should be investigated along with other toxicity tests.
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Affiliation(s)
- Damla Selin Çıldır
- Molecular Biology and Genetics Department, Faculty of Arts and Sciences, Uşak University, 1 Eylül Campus, 64300, Uşak, Turkey
| | - Recep Liman
- Molecular Biology and Genetics Department, Faculty of Arts and Sciences, Uşak University, 1 Eylül Campus, 64300, Uşak, Turkey.
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16
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Aydın G, Liman R. Cyto-genotoxic effects of Pinoxaden on Allium cepa L. roots. J Appl Genet 2020; 61:349-357. [DOI: 10.1007/s13353-020-00560-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 04/19/2020] [Accepted: 04/28/2020] [Indexed: 01/08/2023]
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Halgamuge MN, Skafidas E, Davis D. A meta-analysis of in vitro exposures to weak radiofrequency radiation exposure from mobile phones (1990-2015). ENVIRONMENTAL RESEARCH 2020; 184:109227. [PMID: 32199316 DOI: 10.1016/j.envres.2020.109227] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 01/29/2020] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
To function, mobile phone systems require transmitters that emit and receive radiofrequency signals over an extended geographical area exposing humans in all stages of development ranging from in-utero, early childhood, adolescents and adults. This study evaluates the question of the impact of radiofrequency radiation on living organisms in vitro studies. In this study, we abstract data from 300 peer-reviewed scientific publications (1990-2015) describing 1127 experimental observations in cell-based in vitro models. Our first analysis of these data found that out of 746 human cell experiments, 45.3% indicated cell changes, whereas 54.7% indicated no changes (p = 0.001). Realizing that there are profound distinctions between cell types in terms of age, rate of proliferation and apoptosis, and other characteristics and that RF signals can be characterized in terms of polarity, information content, frequency, Specific Absorption Rate (SAR) and power, we further refined our analysis to determine if there were some distinct properties of negative and positive findings associated with these specific characteristics. We further analyzed the data taking into account the cumulative effect (SAR × exposure time) to acquire the cumulative energy absorption of experiments due to radiofrequency exposure, which we believe, has not been fully considered previously. When the frequency of signals, length and type of exposure, and maturity, rate of growth (doubling time), apoptosis and other properties of individual cell types are considered, our results identify a number of potential non-thermal effects of radiofrequency fields that are restricted to a subset of specific faster-growing less differentiated cell types such as human spermatozoa (based on 19 reported experiments, p-value = 0.002) and human epithelial cells (based on 89 reported experiments, p-value < 0.0001). In contrast, for mature, differentiated adult cells of Glia (p = 0.001) and Glioblastoma (p < 0.0001) and adult human blood lymphocytes (p < 0.0001) there are no statistically significant differences for these more slowly reproducing cell lines. Thus, we show that RF induces significant changes in human cells (45.3%), and in faster-growing rat/mouse cell dataset (47.3%). In parallel with this finding, further analysis of faster-growing cells from other species (chicken, rabbit, pig, frog, snail) indicates that most undergo significant changes (74.4%) when exposed to RF. This study confirms observations from the REFLEX project, Belyaev and others that cellular response varies with signal properties. We concur that differentiation of cell type thus constitutes a critical piece of information and should be useful as a reference for many researchers planning additional studies. Sponsorship bias is also a factor that we did not take into account in this analysis.
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Affiliation(s)
- Malka N Halgamuge
- Department Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia.
| | - Efstratios Skafidas
- Department Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Devra Davis
- Environmental Health Trust, Teton Village, WY, 83025, USA
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Kumar A, Kaur S, Chandel S, Singh HP, Batish DR, Kohli RK. Comparative cyto- and genotoxicity of 900 MHz and 1800 MHz electromagnetic field radiations in root meristems of Allium cepa. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 188:109786. [PMID: 31698176 DOI: 10.1016/j.ecoenv.2019.109786] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 09/26/2019] [Accepted: 10/08/2019] [Indexed: 06/10/2023]
Abstract
In the last few decades, tremendous increase in the use of wireless electronic gadgets, particularly the cell phones, has significantly enhanced the levels of electromagnetic field radiations (EMF-r) in the environment. Therefore, it is pertinent to study the effect of these radiations on biological systems including plants. We investigated comparative cytotoxic and DNA damaging effects of 900 and 1800 MHz EMF-r in Allium cepa (onion) root meristematic cells in terms of mitotic index (MI), chromosomal aberrations (CAs) and single cell gel electrophoresis (comet assay). Onion bulbs were subjected to 900 and 1800 MHz (at power densities 261 ± 8.50 mW m-2 and 332 ± 10.36 mW m-2, respectively) of EMF-r for 0.5 h, 1 h, 2 h, and 4 h. Root length declined by 13.2% and 12.3%, whereas root thickness was increased by 46.7% and 48.3% after 4 h exposure to 900 MHz and 1800 MHz, respectively. Cytogenetic studies exhibited clastogenic effect of EMF-r as depicted by increased CAs and MI. MI increased by 36% and 53% after 2 and 4 h exposure to 900 MHz EMF-r, whereas it increased by 41% and 67% in response to 1800 MHz EMF-r. Aberration index was increased by 41%-266% and 14%-257% during 0.5-4 h of exposure to 900 MHz and 1800 MHz, respectively, over the control. EMF-r exposure decreased % head DNA (DNAH) and increased % tail DNA (DNAT) and olive tail moment (OTM) at both 900 and 1800 EMF-r. In 4 h exposure treatments, head DNA (%) declined by 19% and 23% at 900 MHz and 1800 MHz, respectively. DNAT and OTM were increased by 2.3 and 3.7 fold upon exposure to 900 MHz EMF-r over that in the control, whereas 2.8 and 5.8 fold increase was observed in response to 1800 MHz EMF-r exposure for 4 h and the difference was statistically significant. The study concludes that EMF-r in the communication range (900 and 1800 MHz) adversely affect root meristems in plants and induce cytotoxic and DNA damage. EMF-r induced DNA damage was more pronounced at 1800 MHz than that at 900 MHz.
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Affiliation(s)
- Arvind Kumar
- Department of Botany, Panjab University, Chandigarh, 160 014, India; Department of Botany, Government Degree College, Barsar, Hamirpur, 174 305, Himachal Pradesh, India
| | - Shalinder Kaur
- Department of Botany, Panjab University, Chandigarh, 160 014, India.
| | - Shikha Chandel
- Department of Botany, Panjab University, Chandigarh, 160 014, India
| | - Harminder Pal Singh
- Department of Environment Studies, Panjab University, Chandigarh, 160 014, India.
| | | | - Ravinder Kumar Kohli
- Department of Botany, Panjab University, Chandigarh, 160 014, India; Central University of Punjab, City Campus, Mansa Road, Bathinda, 151 001, Punjab, India
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Influence of the Duration of Microwave Irradiation of Scots Pine (Pinus sylvestris L.) Cones on the Quality of Harvested Seeds. FORESTS 2019. [DOI: 10.3390/f10121108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To improve the process of seed extraction, new solutions have been investigated in an attempt to develop guidelines for the construction of small seed extraction equipment. One of the solutions proposed in this field is the use of electromagnetic radiation in the first stage of hulling cones, reducing their initial moisture content, which will result in quicker scale opening. It is proposed that cones should be irradiated for a relatively short period in the first stage. This operation will allow a quicker loss of moisture from the cones that are still closed, which will result in a more intensive opening of cone scales and will also positively affect the exposure of seeds for the next phase of hulling. The aim of the study was to evaluate the effect of microwave irradiation of pine cones on the quality of the seeds obtained. Cones were exposed to microwaves produced by an 800 W generator. The research was performed in several modes, in which the variable parameters were the duration of microwave irradiation, arrangement of cones with the apex pointed towards either the inner or outer part of the turntable, and the number of cones. The temperature distribution on the surface of and inside the cones was determined using the THERM v2 (Vigo System SA, Ożarów Mazowiecki, Poland) thermal image processing software. We also assessed the energy (vitality) and germinability (quality class) of seeds that were not exposed and those after microwave treatment. The results of the research allowed us to state that, with the assumed parameters of the process, it is possible to obtain second quality class seeds after exposure to microwaves for 5 s. This result was comparable to the quality of seeds obtained without the use of microwaves. When the irradiation time was increased above 5 s, the vitality of seeds decreased and their quality was not satisfactory.
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20
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Vochita G, Oprica L, Gherghel D, Mihai CT, Boukherroub R, Lobiuc A. Graphene oxide effects in early ontogenetic stages of Triticum aestivum L. seedlings. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 181:345-352. [PMID: 31202935 DOI: 10.1016/j.ecoenv.2019.06.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 06/05/2019] [Accepted: 06/08/2019] [Indexed: 06/09/2023]
Abstract
Nanomaterials are being used increasingly in various areas such as electronic devices manufacture, medicine, mechanical devices production, and even food industry. Therefore, the evaluation of their toxicity is mandatory. Graphene oxide (GO) has been shown to have both positive as well as negative impact on different crop plants, depending on species, dose, and duration of exposure. The current study evaluated the impact of GO sheets at different concentrations (500, 1000 and 2000 mg/L) on physiological, biochemical and genetic levels to determine the possible toxic action. Wheat caryopses were treated with GO for 48 h and 7 days. The germination rate and roots elongation decreased in a dose-response manner, except the sample treated with GO at a concentration of 1000 mg/L. Mitotic index has ascendant trend; its increase may be due to the accumulation of prophases GO induced significant accumulation of the cells with aberrations, their presence suggests a clastogenic/aneugenic effect of these carbon nanomaterials. Regarding enzymatic and non-enzymatic antioxidant system defence, the activity varied depending on the dose of GO. Thus, chlorophyll a pigments content decreased significantly at high dose (2000 mg/L), while the carotenoid pigments had lower content at 500 mg/L of GO, and no statistical difference encountered in case of chlorophyll b amount. The antioxidant enzyme activity (CAT, POD, and SOD) was higher at low dose of GO, indicating the presence of oxidative stress generated as a response to the GO treatment. Also, the free radical scavenging activity of the polyphenolic compounds was enhanced upon GO exposure. The GO accumulation has been identified by transmission electron microscopy only at plumules level, near the intercellular space.
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Affiliation(s)
- Gabriela Vochita
- NIRDBS, Branch Institute of Biological Research Iasi, Lascar Catargi Str. 47, 700107, Iasi, Romania.
| | - Lacramioara Oprica
- Alexandru Ioan Cuza" University, Faculty of Biology, Carol I Bd. 20A, Iasi, 700505, Romania.
| | - Daniela Gherghel
- NIRDBS, Branch Institute of Biological Research Iasi, Lascar Catargi Str. 47, 700107, Iasi, Romania
| | - Cosmin-Teodor Mihai
- NIRDBS, Branch Institute of Biological Research Iasi, Lascar Catargi Str. 47, 700107, Iasi, Romania; Gr.T.Popa" Medicine and Pharmacy University of Iasi, Advanced Center for Research and Development in Experimental Medicine (CEMEX), 9-13. M. Kogalniceanu, Iasi, Romania
| | - Rabah Boukherroub
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, F-59000, Lille, France
| | - Andrei Lobiuc
- CERNESIM Research Center, "Alexandru Ioan Cuza" University of Iasi, Carol I Boulevard 20A, 700506, Iasi, Romania
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Bolsunovsky A, Dementyev D, Trofimova E, Iniatkina E, Kladko Y, Petrichenkov M. Chromosomal aberrations and micronuclei induced in onion (Allium cepa) by gamma-radiation. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2019; 207:1-6. [PMID: 31146056 DOI: 10.1016/j.jenvrad.2019.05.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 05/06/2019] [Accepted: 05/20/2019] [Indexed: 06/09/2023]
Abstract
The Allium-test is commonly used to assess genotoxicity of chemical and physical factors. In the present study, the roots of germinating onion (Allium cepa) were exposed to 0.02-13 Gy of γ-radiation. The dose dependencies of the frequency of chromosomal aberrations and micronuclei were nonlinear. An increase in the frequency of chromosomal aberrations in germinating seed root cells was first found under exposure to low doses of γ-radiation (0.05 and 0.1 Gy). Micronuclei inductions at low doses of radiation were not significantly different from the control. Our study suggests that germinating onion seed roots are a sensitive bioassay material for assessing the genotoxic effects of low-dose γ-radiation.
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Affiliation(s)
- A Bolsunovsky
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences, 50-50 Akademgorodok, Krasnoyarsk, 660036, Russia.
| | - D Dementyev
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences, 50-50 Akademgorodok, Krasnoyarsk, 660036, Russia
| | - E Trofimova
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences, 50-50 Akademgorodok, Krasnoyarsk, 660036, Russia
| | - E Iniatkina
- Institute of Biophysics Siberian Branch of Russian Academy of Sciences, 50-50 Akademgorodok, Krasnoyarsk, 660036, Russia
| | - Yu Kladko
- Institute of Forest Siberian Branch of Russian Academy of Sciences, 50-28 Akademgorodok, Krasnoyarsk, 660036, Russia
| | - M Petrichenkov
- Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences, 11 Lavrentyev Ave., Novosibirsk, 630090, Russia
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22
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de Lima GG, Mendes C, de Marchi G, Vicari T, Cestari MM, Gomes MF, Ramsdorf WA, Magalhães WLE, Hansel FA, Leme DM. The evaluation of the potential ecotoxicity of pyroligneous acid obtained from fast pyrolysis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 180:616-623. [PMID: 31132557 DOI: 10.1016/j.ecoenv.2019.05.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 05/16/2019] [Accepted: 05/17/2019] [Indexed: 06/09/2023]
Abstract
Pyroligneous acid (PA) is a by-product of bio-oil, which is obtained by pyrolysis of the wood. This product has been tested for use in several areas, such as agriculture, as a promising green herbicide; however, there are few scientific data regarding its environmental impacts. For this study, an ecotoxicity testing battery, composed of Daphnia magna acute toxicity test, Allium cepa test and in vitro Comet assay with the rainbow trout gonad-2 cell fish line (RTG-2) were used to evaluate the acute toxicity and genotoxicity of PA obtained from fast pyrolysis of eucalyptus wood fines. The PA presented acute toxicity to D. magna (microcrustacea) with EC50 of 26.12 mg/L, and inhibited the seed germination (EC50 5.556 g/L) and root development (EC50 3.436 g/L) of A. cepa (higher plant). No signs of genotoxicity (chromosomal aberrations and micronuclei in A. cepa and primary DNA lesions in RTG-2 cells) were detected to this product. The acute toxicity and absence of genotoxicity may relate to the molecules found in the PA, being the phenolic fraction the key chemical candidate responsible for the toxicity observed. In addition, daphnids seem to be more sensitivity to the toxicity of PA than higher plants based on their EC50 values. This first ecotoxicological evaluation of PA from fast pyrolysis pointed out the need of determining environmental exposure limits to promote the safer agriculture use of this product, avoiding impacts to living organisms.
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Affiliation(s)
- Gabriel Goetten de Lima
- Graduate Program in Engineering and Science of Materials - PIPE, Federal University of Paraná - UFPR, 81.531-990 Curitiba PR, Brazil; Materials Research Institute, Athlone Institute of Technology, Athlone, Ireland
| | - Camila Mendes
- Department of Genetics, Federal University of Paraná, Curitiba, PR, Brazil
| | - Gustavo de Marchi
- Department of Genetics, Federal University of Paraná, Curitiba, PR, Brazil
| | - Taynah Vicari
- Department of Genetics, Federal University of Paraná, Curitiba, PR, Brazil
| | | | - Monike F Gomes
- Laboratory of Ecotoxicology, Federal University of Technology - Paraná, Curitiba, PR, Brazil
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Chandel S, Kaur S, Issa M, Singh HP, Batish DR, Kohli RK. Appraisal of immediate and late effects of mobile phone radiations at 2100 MHz on mitotic activity and DNA integrity in root meristems of Allium cepa. PROTOPLASMA 2019; 256:1399-1407. [PMID: 31115694 DOI: 10.1007/s00709-019-01386-y] [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] [Received: 08/16/2018] [Accepted: 04/24/2019] [Indexed: 06/09/2023]
Abstract
The present study evaluated the potential of 2100 MHz radiofrequency radiations to act as cytotoxic and genotoxic agent. Fresh onion (Allium cepa L.) roots were exposed to electromagnetic field radiations (EMF-r) for different durations (1 h and 4 h) and evaluated for mitotic index (MI), phase index, chromosomal aberrations, and DNA damage. DNA damage was investigated with the help of the comet assay by assessing various parameters like % head DNA (HDNA), % tail DNA (TDNA), tail moment (TM), and olive tail moment (OTM). Effects of EMF-r exposure were also compared with that of methyl methanesulfonate (MMS; 90 μM), which acted as a positive control. The post-exposure effects of EMF-r after providing the test plants with an acclimatization period of 24 h were also evaluated. Compared to the control, a significant increase in the MI and aberration percentage was recorded upon 4 h of exposure. However, no specific trend of phase index in response to exposure was detected. EMF-r exposure incited DNA damage with a significant decrease in HDNA accompanied by an increase in TDNA upon exposure of 4 h. However, TM and OTM did not change significantly upon exposure as compared to that of control. Analysis of the post-exposure effects of EMF-r did not show any significant change/recovery. Our data, thus, suggest the potential cytotoxic and genotoxic nature of 2100 MHz EMF-r. Our study bears great significance in view of the swiftly emergent EMF-r in the surrounding environment and their potential for inciting aberrations at the chromosomal level, thus posing a genetic hazard.
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Affiliation(s)
- Shikha Chandel
- Department of Botany, Panjab University, Chandigarh, 160014, India
| | - Shalinder Kaur
- Department of Botany, Panjab University, Chandigarh, 160014, India.
| | - Mohd Issa
- Department of Environment Studies, Panjab University, Chandigarh, 160014, India
| | - Harminder Pal Singh
- Department of Environment Studies, Panjab University, Chandigarh, 160014, India
| | | | - Ravinder Kumar Kohli
- Department of Botany, Panjab University, Chandigarh, 160014, India
- Central University of Punjab, Bathinda, 151001, India
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Chandel S, Kaur S, Issa M, Singh HP, Batish DR, Kohli RK. Exposure to mobile phone radiations at 2350 MHz incites cyto- and genotoxic effects in root meristems of Allium cepa. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2019; 17:97-104. [PMID: 31297205 PMCID: PMC6582205 DOI: 10.1007/s40201-018-00330-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 12/03/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND The exponential increase of electromagnetic field radiations (EMF-r) in the natural environment has raked up the controversies regarding their biological effects. Concern regarding the putative capacity of EMF-r to affect living beings has been growing due to the ongoing elevation in the use of high frequency EMF-r in communication systems, e.g. Mobile phones. METHODS In the present study, we tried to examine the cyto- and genotoxic potential of mobile phone EMF-r at 2350 MHz using onions (Allium cepa L.). Fresh adventitious onion roots were exposed to continuous EMF-r at 2350 MHz for different time periods (1 h, 2 h and 4 h). The evaluation of cytotoxicity was done in terms of mitotic index (MI), phase index and chromosomal aberrations. Genotoxicity was investigated employing comet assay in terms of changes in % HDNA (head DNA) and % TDNA (tail DNA), TM (tail moment) and OTM (olive tail moment). Data were analyzed using one-way ANOVA and mean values were separated using post hoc Tukey's test. RESULTS The results manifested a significant increase of MI and chromosomal aberrations (%) upon 4 h, and ≥ 2 h of exposure, respectively, as compared to the control. No specific changes in phase index in response to EMF-r exposure were observed. The % HDNA and % TDNA values exhibited significant changes in contrast to that of control upon 2 h and 4 h of exposure, respectively. However, TM and OTM did not change significantly. CONCLUSIONS Our results infer that continuous exposures of radiofrequency EMF-r (2350 MHz) for long durations have a potential of inciting cyto- and genotoxic effects in onion root meristems.
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Affiliation(s)
- Shikha Chandel
- Department of Botany, Panjab University, Chandigarh, 160014 India
| | - Shalinder Kaur
- Department of Botany, Panjab University, Chandigarh, 160014 India
| | - Mohd Issa
- Department of Environment Studies, Panjab University, Chandigarh, 160014 India
| | - Harminder Pal Singh
- Department of Environment Studies, Panjab University, Chandigarh, 160014 India
| | | | - Ravinder Kumar Kohli
- Department of Botany, Panjab University, Chandigarh, 160014 India
- Central University of Punjab, Mansa Road, Bathinda, 151 001 India
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Mildažienė V, Aleknavičiūtė V, Žūkienė R, Paužaitė G, Naučienė Z, Filatova I, Lyushkevich V, Haimi P, Tamošiūnė I, Baniulis D. Treatment of Common Sunflower (Helianthus annus L.) Seeds with Radio-frequency Electromagnetic Field and Cold Plasma Induces Changes in Seed Phytohormone Balance, Seedling Development and Leaf Protein Expression. Sci Rep 2019; 9:6437. [PMID: 31015543 PMCID: PMC6478675 DOI: 10.1038/s41598-019-42893-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 04/04/2019] [Indexed: 11/16/2022] Open
Abstract
Treatment of plant seeds with electromagnetic fields or non-thermal plasmas aims to take advantage of plant functional plasticity towards stimulation of plant agricultural performance. In this study, the effects of pre-sowing seed treatment using 200 Pa vacuum (7 min), 5.28 MHz radio-frequency cold plasma (CP -2, 5, and 7 min) and electromagnetic field (EMF -5, 10, 15 min) on seed germination kinetics, content of phytohormones, morphometric parameters of seedlings and leaf proteome were assessed. CP 7 min and EMF 15 min treatments caused 19-24% faster germination in vitro; germination in the substrate was accelerated by vacuum (9%) and EMF 15 min (17%). The stressors did not change the seed germination percentage, with exception of EMF 5 min treatment that caused a decrease by 7.5%. Meanwhile both CP 7 min and EMF 15 min treatments stimulated germination, but the EMF treatment resulted in higher weight of leaves. Stressor-specific changes in phytohormone balance were detected in seeds: vacuum treatment decreased zeatin amount by 39%; CP treatments substantially increased gibberellin content, but other effects strongly varied with the treatment duration; the abscisic acid content was reduced by 55-60% after the EMF treatment. Analysis of the proteome showed that short exposure of seeds to the EMF or CP induced a similar long-term effect on gene expression in leaves, mostly stimulating expression of proteins involved in photosynthetic processes and their regulation.
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Affiliation(s)
- Vida Mildažienė
- Faculty of Natural Sciences, Vytautas Magnus University, Kaunas, Lithuania.
| | | | - Rasa Žūkienė
- Faculty of Natural Sciences, Vytautas Magnus University, Kaunas, Lithuania
| | - Giedrė Paužaitė
- Faculty of Natural Sciences, Vytautas Magnus University, Kaunas, Lithuania
| | - Zita Naučienė
- Faculty of Natural Sciences, Vytautas Magnus University, Kaunas, Lithuania
| | - Irina Filatova
- B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, Belarus
| | - Veronika Lyushkevich
- B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, Belarus
| | - Perttu Haimi
- Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry, Babtai, Kaunas reg, Lithuania
| | - Inga Tamošiūnė
- Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry, Babtai, Kaunas reg, Lithuania
| | - Danas Baniulis
- Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry, Babtai, Kaunas reg, Lithuania
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26
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Kotelnikova A, Fastovets I, Rogova O, Volkov DS, Stolbova V. Toxicity assay of lanthanum and cerium in solutions and soil. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 167:20-28. [PMID: 30292972 DOI: 10.1016/j.ecoenv.2018.09.117] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 09/24/2018] [Accepted: 09/27/2018] [Indexed: 06/08/2023]
Abstract
Lanthanum (La) and cerium (Ce) are one of the most abundant rare earth elements (REEs). In spite of quite extensive studying of the effects of these lanthanides on biota, some contradictions remain in the results. Also little is known about the effect of lanthanum and cerium on plant cells and their mitotic cycle, especially in soils. In this study, the effects of La and Ce in solutions and soil samples on root growth, mitotic index (MI) and frequency of aberrant cells (FAC) were assayed using one of the most convenient objects for testing of cytotoxicity - onion Allium cepa L. Bulbs were germinated on media containing La and Ce in concentrations 0-200 mg/l and 0-50 mg/l respectively for solutions and 0-200 mg/kg for soil samples. After 5 days of germination in solutions, a significant decrease in root elongation and MI in apical meristem cells are shown. We have also observed an increase in the number of cells with aberrations at 50 mg/l La and Ce concentration. The number of observed stickiness and disturbed metaphase has increased significantly. Soil samples turned out to be less toxic compared to the solutions probably due to the decreased availability of REEs. In spite of this, significant cytotoxicity of soil samples containing the highest concentration of La and Ce (200 mg/kg) is observed. The latter may indicate the importance of considering the cytotoxicity of soils containing high lanthanides concentrations - in extraction and production areas and actively fertilized fields.
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Affiliation(s)
- Anna Kotelnikova
- Department of Chemistry and Physical Chemistry of Soils, V.V. Dokuchaev Soil Science Institute, Pyzhevsky per., 7/2, Moscow 119017, Russia; Soil Science Faculty, Lomonosov Moscow State University, Leninskiye gory ul., 1, str. 12, Moscow 119991, Russia
| | - Ilya Fastovets
- Department of Chemistry and Physical Chemistry of Soils, V.V. Dokuchaev Soil Science Institute, Pyzhevsky per., 7/2, Moscow 119017, Russia; Skolkovo Institute of Science and Technology, Nobelya, 3, Moscow 121205, Russia.
| | - Olga Rogova
- Department of Chemistry and Physical Chemistry of Soils, V.V. Dokuchaev Soil Science Institute, Pyzhevsky per., 7/2, Moscow 119017, Russia.
| | - Dmitry S Volkov
- Department of Chemistry and Physical Chemistry of Soils, V.V. Dokuchaev Soil Science Institute, Pyzhevsky per., 7/2, Moscow 119017, Russia; Department of Chemistry, Lomonosov Moscow State University, Leninskiye gory ul., 1 str. 3, Moscow 119991, Russia
| | - Valeriya Stolbova
- Soil Science Faculty, Lomonosov Moscow State University, Leninskiye gory ul., 1, str. 12, Moscow 119991, Russia.
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Bolsunovsky AY, Dementyev DV, Trofimova EA, Iniatkina EM, Kladko YV, Petrichenkov MV. Cytogenetic Effects of γ-Radiation in Onion (Allium cepa L.) Seedlings. DOKL BIOCHEM BIOPHYS 2018; 481:181-185. [PMID: 30168054 DOI: 10.1134/s1607672918040014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Indexed: 11/23/2022]
Abstract
The effect of γ-radiation on the cytogenetic parameters of root meristem cells of onion seedlings was studied in laboratory experiments (Allium-test). An increase in the overall frequency of chromosomal aberrations and micronucleus frequencies in seedling cells at low γ-radiation doses (≤0.1 Gy) was detected for the first time. At a maximum absorbed dose of 13 Gy, chromosomal aberrations were detected in the majority of cells in the anaphase and telophase stages of the cell cycle, and the number of cells with multiple aberrations increased. The main contribution to the overall frequency of chromosomal aberrations, in addition to multiple aberrations, is made by the bridge-type aberrations, fragments, and lagging chromosomes. The data obtained allow using the cytogenetic indices of Allium cepa seedlings to assess the biological effects of lowdose γ-radiation.
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Affiliation(s)
- A Ya Bolsunovsky
- Institute of Biophysics, Federal Research Center "Krasnoyarsk Science Center SB RAS," Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia.
| | - D V Dementyev
- Institute of Biophysics, Federal Research Center "Krasnoyarsk Science Center SB RAS," Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia
| | - E A Trofimova
- Institute of Biophysics, Federal Research Center "Krasnoyarsk Science Center SB RAS," Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia
| | - E M Iniatkina
- Institute of Biophysics, Federal Research Center "Krasnoyarsk Science Center SB RAS," Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia
| | - Yu V Kladko
- Institute of Biophysics, Federal Research Center "Krasnoyarsk Science Center SB RAS," Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia
| | - M V Petrichenkov
- Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
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Khan MD, Ali S, Azizullah A, Shuijin Z. Use of various biomarkers to explore the effects of GSM and GSM-like radiations on flowering plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:24611-24628. [PMID: 30030756 DOI: 10.1007/s11356-018-2734-3] [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: 04/16/2018] [Accepted: 07/05/2018] [Indexed: 06/08/2023]
Abstract
Since last decade, GSM (Global System for Mobile Communication) technology has evidently revolutionized our digital world. It uses electromagnetic frequency radiations (EMFr), ranging 850-1900 MHz, and is being composed of three main units (i.e., mobile station, access and core networks). GSM technology has significant impact on our daily life as revealed by increased number of mobile users in the world over. The main goal of the present review is to critically revisit the available literature regarding the responses of various flowering plant species towards GSM and GSM-like radiations using physiological, biochemical, molecular and cytological markers using in vitro approaches. Different monocots (tomato, onion, wheat and maize etc.) and dicots (pulses, mustard and flax) have been studied using both GSM mobile phone and GSM simulators. Different studies revealed overall reductions in germination, root-shoot lengths, dry weight, in both dose and time-dependent manners. However, there could be found incline in various parameters at biochemical and molecular levels. Furthermore, there could be found disturbances at cytological levels upon exposure of roots of onion to EMFr radiations. The overall literature review shows the negative effects of GSM and GSM-like radiations on targeted plant species. In order to alleviate the stressful effects of EMFr radiations on plants, in vivo studies need to be done using various cost-effective approaches such as use of biochar and various organic amendments.
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Affiliation(s)
- Muhammad Daud Khan
- Department of Biotechnology and Genetic Engineering, Kohat University of Science and Technology, Kohat, Pakistan.
- Institute of Crop Science, Department of Agronomy, College of Agriculture and Biotechnolgy, Zhejiang University, Hangzhou, People's Republic of China.
| | - Shafaqat Ali
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, Faisalabad, 38000, Pakistan
| | - Azizullah Azizullah
- Department of Botany, Kohat University of Science and Technology, Kohat, 26000, Pakistan
| | - Zhu Shuijin
- Institute of Crop Science, Department of Agronomy, College of Agriculture and Biotechnolgy, Zhejiang University, Hangzhou, People's Republic of China.
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Franchini V, De Sanctis S, Marinaccio J, De Amicis A, Coluzzi E, Di Cristofaro S, Lista F, Regalbuto E, Doria A, Giovenale E, Gallerano GP, Bei R, Benvenuto M, Masuelli L, Udroiu I, Sgura A. Study of the effects of 0.15 terahertz radiation on genome integrity of adult fibroblasts. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2018; 59:476-487. [PMID: 29602275 DOI: 10.1002/em.22192] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 03/06/2018] [Accepted: 03/08/2018] [Indexed: 05/18/2023]
Abstract
The applications of Terahertz (THz) technologies have significantly developed in recent years, and the complete understanding of the biological effects of exposure to THz radiation is becoming increasingly important. In a previous study, we found that THz radiation induced genomic damage in fetal fibroblasts. Although these cells demonstrated to be a useful model, exposure of human foetuses to THz radiation is highly improbable. Conversely, THz irradiation of adult dermal tissues is cause of possible concern for some professional and nonprofessional categories. Therefore, we extended our study to the investigation of the effects of THz radiation on adult fibroblasts (HDF). In this work, the effects of THz exposure on HDF cells genome integrity, cell cycle, cytological ultrastructure and proteins expression were assessed. Results of centromere-negative micronuclei frequencies, phosphorylation of H2AX histone, and telomere length modulation indicated no induction of DNA damage. Concordantly, no changes in the expression of proteins associated with DNA damage sensing and repair were detected. Conversely, our results showed an increase of centromere-positive micronuclei frequencies and chromosomal nondisjunction events, indicating induction of aneuploidy. Therefore, our results indicate that THz radiation exposure may affect genome integrity through aneugenic effects, and not by DNA breakage. Our findings are compared to published studies, and possible biophysical mechanisms are discussed. Environ. Mol. Mutagen. 59:476-487, 2018. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Valeria Franchini
- Scientific Department, Army Medical Center, Rome, Italy
- Department of Science, University "Roma Tre", Rome, Italy
| | | | | | | | - Elisa Coluzzi
- Department of Science, University "Roma Tre", Rome, Italy
| | | | | | - Elisa Regalbuto
- Scientific Department, Army Medical Center, Rome, Italy
- Department of Science, University "Roma Tre", Rome, Italy
| | - Andrea Doria
- Radiation Sources Laboratory, ENEA Frascati Research Center, Frascati, Italy
| | - Emilio Giovenale
- Radiation Sources Laboratory, ENEA Frascati Research Center, Frascati, Italy
| | | | - Roberto Bei
- Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - Monica Benvenuto
- Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - Laura Masuelli
- Department of Experimental Medicine, University of Rome "Sapienza", Rome, Italy
| | - Ion Udroiu
- Department of Science, University "Roma Tre", Rome, Italy
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30
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Malakahmad A, Manan TSBA, Sivapalan S, Khan T. Genotoxicity assessment of raw and treated water samples using Allium cepa assay: evidence from Perak River, Malaysia. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:5421-5436. [PMID: 29209979 DOI: 10.1007/s11356-017-0721-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 11/07/2017] [Indexed: 06/07/2023]
Abstract
Allium cepa assay was carried out in this study to evaluate genotoxic effects of raw and treated water samples from Perak River in Perak state, Malaysia. Samples were collected from three surface water treatment plants along the river, namely WTPP, WTPS, and WTPK. Initially, triplicates of equal size Allium cepa (onions) bulbs, 25-30 mm in diameter and average weight of 20 g, were set up in distilled water for 24 h at 20 ± 2 °C and protected from direct sunlight, to let the roots to grow. After germination of roots (0.5-1.0 cm in length), bulbs were transferred to collected water samples each for a 96-h period of exposure. The root physical deformations were observed. Genotoxicity quantification was based on mitotic index and genotoxicity level. Statistical analysis using cross-correlation function for replicates from treated water showed that root length has inverse correlation with mitotic indices (r = - 0.969) and frequencies of cell aberrations (r = - 0.976) at lag 1. Mitotic indices and cell aberrations of replicates from raw water have shown positive correlation at lag 1 (r = 0.946). Genotoxicity levels obtained were 23.4 ± 1.98 (WTPP), 26.68 ± 0.34 (WTPS), and 30.4 ± 1.13 (WTPK) for treated water and 17.8 ± 0.18 (WTPP), 37.15 ± 0.17 (WTPS), and 47.2 ± 0.48 (WTPK) for raw water. The observed cell aberrations were adherence, chromosome delay, C-metaphase, chromosome loss, chromosome bridge, chromosome breaks, binucleated cell, mini cell, and lobulated nuclei. The morphogenetic deformations obtained were likely due to genotoxic substances presence in collected water samples. Thus, water treatment in Malaysia does not remove genotoxic compounds.
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Affiliation(s)
- Amirhossein Malakahmad
- Sustainable Resources Mission Oriented Research, Universiti Teknologi PETRONAS (UTP), Seri Iskandar, Malaysia
| | | | - Subarna Sivapalan
- Sustainable Resources Mission Oriented Research, Universiti Teknologi PETRONAS (UTP), Seri Iskandar, Malaysia
| | - Taimur Khan
- Sustainable Resources Mission Oriented Research, Universiti Teknologi PETRONAS (UTP), Seri Iskandar, Malaysia
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Exposure to 2100 MHz electromagnetic field radiations induces reactive oxygen species generation in Allium cepa roots. J Microsc Ultrastruct 2017; 5:225-229. [PMID: 30023258 PMCID: PMC6025783 DOI: 10.1016/j.jmau.2017.09.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 09/04/2017] [Accepted: 09/04/2017] [Indexed: 12/12/2022] Open
Abstract
During the last few decades there has been an enormous increase in the usage of cell phones as these are one of the most convenient gadgets and provide excellent mode of communication without evoking any hindrance to movement. However, these are significantly adding to the electromagnetic field radiations (EMF-r) in the environment and thus, are required to be analysed for their impacts on living beings. The present study investigated the role of cell phone EMF-r in inciting oxidative damage in onion (Allium cepa) roots at a frequency of 2100 MHz. Onion roots were exposed to continuous wave homogenous EMF-r for 1, 2 and 4 h for single day and generation of reactive oxygen species (ROS) in terms of malondialdehyde (MDA), hydrogen peroxide (H2O2) and superoxide anion (O2•−) content and changes in the activities of antioxidant enzymes- superoxide dismutases (SOD) and catalases (CAT) were measured. The results showed that EMF-r exposure enhanced the content of MDA, H2O2 and O2•−. Also, there was an upregulation in the activity of antioxidant enzymes− SOD and CAT− in onion roots. The study concluded that 2100 MHz cell phone EMF-r incite oxidative damage in onion roots by altering the oxidative metabolism.
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Qureshi ST, Memon SA, Abassi AR, Sial MA, Bughio FA. Radiofrequency radiations induced genotoxic and carcinogenic effects on chickpea ( Cicer arietinum L.) root tip cells. Saudi J Biol Sci 2017; 24:883-891. [PMID: 28490961 PMCID: PMC5415122 DOI: 10.1016/j.sjbs.2016.02.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 01/21/2016] [Accepted: 02/07/2016] [Indexed: 11/01/2022] Open
Abstract
Present study was under taken to predict the possible DNA damages (genotoxicity) and carcinogenicity caused by radiofrequency radiations (RF) to living tissue. Dry seeds of chickpea were treated with GSM cell phone (900 MHz) and laptop (3.31 GHz) as RF source for 24 and 48 h. Untreated seeds were used as (0 h) negative control and Gamma rays (250 Gray) as positive control. Plant chromosomal aberration assay was used as genotoxicity marker. All the treatment of RF inhibits seed germination percentage. 48 h laptop treatment has the most negative effect as compared to untreated control. A decrease was observed in mitotic index (M.I) and increase in abnormality index (A.I) with the increase in exposure duration and frequency in (Hz). Cell membrane damages were also observed only in 48 h exposure of cell phone and laptop (RF). Maximum nuclear membrane damages and ghost cells were again recorded in 48 h exposure of cell phone and laptop. The radiofrequency radiations (900 MHz and 3.31 GHz) are only genotoxic as they induce micronuclei, bi-nuclei, multi-nuclei and scattered nuclei but could be carcinogenic as 48 h incubation of RF induced fragmentation and ghost cells. Therefore cell phones and laptop should not be used unnecessarily to avoid possible genotoxic and carcinogenic effects.
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Waldmann-Selsam C, Balmori-de la Puente A, Breunig H, Balmori A. Radiofrequency radiation injures trees around mobile phone base stations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 572:554-569. [PMID: 27552133 DOI: 10.1016/j.scitotenv.2016.08.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 07/19/2016] [Accepted: 08/06/2016] [Indexed: 06/06/2023]
Abstract
In the last two decades, the deployment of phone masts around the world has taken place and, for many years, there has been a discussion in the scientific community about the possible environmental impact from mobile phone base stations. Trees have several advantages over animals as experimental subjects and the aim of this study was to verify whether there is a connection between unusual (generally unilateral) tree damage and radiofrequency exposure. To achieve this, a detailed long-term (2006-2015) field monitoring study was performed in the cities of Bamberg and Hallstadt (Germany). During monitoring, observations and photographic recordings of unusual or unexplainable tree damage were taken, alongside the measurement of electromagnetic radiation. In 2015 measurements of RF-EMF (Radiofrequency Electromagnetic Fields) were carried out. A polygon spanning both cities was chosen as the study site, where 144 measurements of the radiofrequency of electromagnetic fields were taken at a height of 1.5m in streets and parks at different locations. By interpolation of the 144 measurement points, we were able to compile an electromagnetic map of the power flux density in Bamberg and Hallstadt. We selected 60 damaged trees, in addition to 30 randomly selected trees and 30 trees in low radiation areas (n=120) in this polygon. The measurements of all trees revealed significant differences between the damaged side facing a phone mast and the opposite side, as well as differences between the exposed side of damaged trees and all other groups of trees in both sides. Thus, we found that side differences in measured values of power flux density corresponded to side differences in damage. The 30 selected trees in low radiation areas (no visual contact to any phone mast and power flux density under 50μW/m2) showed no damage. Statistical analysis demonstrated that electromagnetic radiation from mobile phone masts is harmful for trees. These results are consistent with the fact that damage afflicted on trees by mobile phone towers usually start on one side, extending to the whole tree over time.
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Affiliation(s)
| | | | | | - Alfonso Balmori
- Consejería de Medio Ambiente, Junta de Castilla y León, C/Rigoberto Cortejoso, 14 47071 Valladolid, Spain.
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Halgamuge MN. Review: Weak radiofrequency radiation exposure from mobile phone radiation on plants. Electromagn Biol Med 2016; 36:213-235. [PMID: 27650031 DOI: 10.1080/15368378.2016.1220389] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AIM The aim of this article was to explore the hypothesis that non-thermal, weak, radiofrequency electromagnetic fields (RF-EMF) have an effect on living plants. SUBJECT AND METHODS In this study, we performed an analysis of the data extracted from the 45 peer-reviewed scientific publications (1996-2016) describing 169 experimental observations to detect the physiological and morphological changes in plants due to the non-thermal RF-EMF effects from mobile phone radiation. Twenty-nine different species of plants were considered in this work. RESULTS Our analysis demonstrates that the data from a substantial amount of the studies on RF-EMFs from mobile phones show physiological and/or morphological effects (89.9%, p < 0.001). Additionally, our analysis of the results from these reported studies demonstrates that the maize, roselle, pea, fenugreek, duckweeds, tomato, onions and mungbean plants seem to be very sensitive to RF-EMFs. Our findings also suggest that plants seem to be more responsive to certain frequencies, especially the frequencies between (i) 800 and 1500 MHz (p < 0.0001), (ii) 1500 and 2400 MHz (p < 0.0001) and (iii) 3500 and 8000 MHz (p = 0.0161). CONCLUSION The available literature on the effect of RF-EMFs on plants to date observed the significant trend of radiofrequency radiation influence on plants. Hence, this study provides new evidence supporting our hypothesis. Nonetheless, this endorses the need for more experiments to observe the effects of RF-EMFs, especially for the longer exposure durations, using the whole organisms. The above observation agrees with our earlier study, in that it supported that it is not a well-grounded method to characterize biological effects without considering the exposure duration. Nevertheless, none of these findings can be directly associated with human; however, on the other hand, this cannot be excluded, as it can impact the human welfare and health, either directly or indirectly, due to their complexity and varied effects (calcium metabolism, stress proteins, etc.). This study should be useful as a reference for researchers conducting epidemiological studies and the long-term experiments, using whole organisms, to observe the effects of RF-EMFs.
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Affiliation(s)
- Malka N Halgamuge
- a Department of Electrical and Electronic Engineering , The University of Melbourne , Parkville , Victoria , Australia
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Kumar A, Singh HP, Batish DR, Kaur S, Kohli RK. EMF radiations (1800 MHz)-inhibited early seedling growth of maize (Zea mays) involves alterations in starch and sucrose metabolism. PROTOPLASMA 2016; 253:1043-1049. [PMID: 26277350 DOI: 10.1007/s00709-015-0863-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 07/18/2015] [Indexed: 06/04/2023]
Abstract
The present study investigated the impact of 1800-MHz electromagnetic field radiations (EMF-r), widely used in mobile communication, on the growth and activity of starch-, sucrose-, and phosphate-hydrolyzing enzymes in Zea mays seedlings. We exposed Z. mays to modulated continuous wave homogenous EMF-r at specific absorption rate (SAR) of 1.69±0.0 × 10(-1) W kg(-1) for ½, 1, 2, and 4 h. The analysis of seedlings after 7 days revealed that short-term exposure did not induce any significant change, while longer exposure of 4 h caused significant growth and biochemical alterations. There was a reduction in the root and coleoptile length with more pronounced effect on coleoptile growth (23 % reduction on 4-h exposure). The contents of photosynthetic pigments and total carbohydrates declined by 13 and 18 %, respectively, in 4-h exposure treatments compared to unexposed control. The activity of starch-hydrolyzing enzymes-α- and β-amylases-increased by ∼92 and 94 %, respectively, at an exposure duration of 4 h, over that in the control. In response to 4-h exposure treatment, the activity of sucrolytic enzymes-acid invertases and alkaline invertases-was increased by 88 and 266 %, whereas the specific activities of phosphohydrolytic enzymes (acid phosphatases and alkaline phosphatases) showed initial increase up to ≤2 h duration and then declined at >2 h exposure duration. The study concludes that EMF-r-inhibited seedling growth of Z. mays involves interference with starch and sucrose metabolism.
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Affiliation(s)
- Arvind Kumar
- Department of Botany, Panjab University, Chandigarh, 160 014, India
| | - Harminder Pal Singh
- Department of Environment Studies, Panjab University, Chandigarh, 160 014, India.
| | - Daizy R Batish
- Department of Botany, Panjab University, Chandigarh, 160 014, India
| | - Shalinder Kaur
- Department of Botany, Panjab University, Chandigarh, 160 014, India
| | - Ravinder Kumar Kohli
- Department of Botany, Panjab University, Chandigarh, 160 014, India
- Central University of Punjab, City Campus, Mansa Road, Bathinda, 151 001, Punjab, India
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Gustavino B, Carboni G, Petrillo R, Paoluzzi G, Santovetti E, Rizzoni M. Exposure to 915 MHz radiation induces micronuclei inVicia fabaroot tips. Mutagenesis 2015; 31:187-92. [DOI: 10.1093/mutage/gev071] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Leite ADS, Dantas AF, Oliveira GLDS, Gomes Júnior AL, de Lima SG, Citó AMDGL, de Freitas RM, Melo-Cavalcante AADC, Dantas Lopes JA. Evaluation of toxic, cytotoxic, mutagenic, and antimutagenic activities of natural and technical cashew nut shell liquids using the Allium cepa and Artemia salina bioassays. BIOMED RESEARCH INTERNATIONAL 2015; 2015:626835. [PMID: 25861638 PMCID: PMC4377390 DOI: 10.1155/2015/626835] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 01/21/2015] [Accepted: 01/21/2015] [Indexed: 01/11/2023]
Abstract
The cashew nut releases a substance that is known as cashew nut shell liquid (CNSL). There are both natural (iCNSL) and technical (tCNSL) cashew nut shell liquids. This study used an Artemia salina bioassay to evaluate the toxic effects of iCNSL and tCNSL cashew nut shell liquids. It also evaluated the toxicity, cytotoxicity, and mutagenicity of CNSL and its effects on the damage induced by copper sulfate (CuSO4·5H2O) on the meristems' root of Allium cepa. Effects of the damage induced by CuSO4·5H2O were evaluated before (pre-), during (co-), and after (post-) treatments. The iCNSL contained 94.5% anacardic acid, and the tCNSL contained 91.3% cardanol. The liquids were toxic to A. salina. Toxicity, cytotoxicity, and mutagenicity were observed with iCNSL compared with the negative control. Similarly, iCNSL failed to inhibit the toxicity and cytotoxicity of CuSO4·5H2O. The tCNSL was not toxic, cytotoxic, or mutagenic in any of the concentrations. However, the lowest iCNSL concentrations and all of the tCNSL concentrations had preventive, antimutagenic, and reparative effects on micronuclei and on chromosomal aberrations in the A. cepa. Therefore, protective, modulating, and reparative effects may be observed in the A. cepa, depending on the concentration and type of CNSL used.
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Affiliation(s)
- Aracelli de Sousa Leite
- Laboratório de Pesquisa em Genética Toxicológica de Pós-Graduação em Ciências Farmacêuticas da Universidade Federal do Piauí, 6409-550 Teresina, PI, Brazil
- Programa de Pós-Graduação em Biotecnologia (RENORBIO) da Universidade Federal do Piauí, 6409-550 Teresina, PI, Brazil
| | - Alisson Ferreira Dantas
- Programa de Pós-Graduação em Biologia Animal, Departamento de Genética e Morfologia, Instituto de Ciências Biológicas, Universidade de Brasília, 70910-900 Brasília, DF, Brazil
| | - George Laylson da Silva Oliveira
- Laboratório de Pesquisa em Neuroquímica Experimental do Programa de Pós-Graduação em Ciências Farmacêuticas da Universidade Federal do Piauí, 6409-550 Teresina, PI, Brazil
| | - Antonio L. Gomes Júnior
- Laboratório de Pesquisa em Genética Toxicológica de Pós-Graduação em Ciências Farmacêuticas da Universidade Federal do Piauí, 6409-550 Teresina, PI, Brazil
| | - Sidney Gonçalo de Lima
- Departamento de Química, CCN, Universidade Federal do Piauí, 6409-550 Teresina, PI, Brazil
| | | | - Rivelilson M. de Freitas
- Laboratório de Pesquisa em Neuroquímica Experimental do Programa de Pós-Graduação em Ciências Farmacêuticas da Universidade Federal do Piauí, 6409-550 Teresina, PI, Brazil
| | - Ana Amélia de C. Melo-Cavalcante
- Laboratório de Pesquisa em Genética Toxicológica de Pós-Graduação em Ciências Farmacêuticas da Universidade Federal do Piauí, 6409-550 Teresina, PI, Brazil
- Programa de Pós-Graduação em Biotecnologia (RENORBIO) da Universidade Federal do Piauí, 6409-550 Teresina, PI, Brazil
| | - José Arimateia Dantas Lopes
- Programa de Pós-Graduação em Biotecnologia (RENORBIO) da Universidade Federal do Piauí, 6409-550 Teresina, PI, Brazil
- Laboratório de Pesquisa em Neuroquímica Experimental do Programa de Pós-Graduação em Ciências Farmacêuticas da Universidade Federal do Piauí, 6409-550 Teresina, PI, Brazil
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Abda A, Benouareth DE, Tabet M, Liman R, Konuk M, Khallef M, Taher A. Mutagenicity and genotoxicity of drinking water in Guelma region, Algeria. ENVIRONMENTAL MONITORING AND ASSESSMENT 2015; 187:21. [PMID: 25626560 DOI: 10.1007/s10661-014-4223-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 12/10/2014] [Indexed: 06/04/2023]
Abstract
In this study, a battery of genotoxicity assays for monitoring drinking water was performed to assess the quality of the water resulting from the treatment plants. Five different types of samples were collected: raw water (P1), treated after pre-chlorination (P2), treated after decantation (P3), treated post-chlorination (P4), and consumers' taps (P5-P12). This study aims to evaluate the formation/occurrence of mutagenic and/or genotoxic compounds in surface drinking waters treated with chlorine disinfectant, during four seasonal experiments: summer, autumn, winter, and spring between 2012 and 2013 by bacterial reverse mutation assay in both Salmonella typhimurium TA98 and TA100 strains with or without metabolic activation system (S9 mix) and Allium cepa root meristematic cells, respectively. All of water samples, except at P1, P2, and P5 in summer; P1 in autumn; and P1 and P3-P12 in spring without S9 mix, and at P1 and P2 in summer and P6 and P8-P12 in spring with S9 mix, were found to be mutagenic in S. typhimurium TA98. However, only P11 and P12 in winter were found to be mutagenic for TA100 without S9 mix. The tested preparations in Allium anaphase-telophase test revealed a significant decrease in mitotic index (MI) and a simultaneous increase in chromosome aberrations (CAs) compared to the control. The bridge, stickiness, vagrant chromosomes, and disturbed chromosome aberrations were observed in anaphase-telophase cells. Physicochemical analysis, trihalomethanes (THMs), romoform (CHBr3), chloroform (CHCl3), bromodichloromethane (CHBrCl2), and dibromochloromethane (CHBr2Cl) levels in water samples were also determined. The results show also that this short-term battery tests are applicable in the routine monitoring of drinking water quality before and after distribution.
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Affiliation(s)
- Ahlem Abda
- Biology Department, Faculty of Natural and Life Sciences, Earth and Universe Sciences, University 8 Mai 1945 Guelma, BP 401, 24000, Guelma, Algeria
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Halgamuge MN, Yak SK, Eberhardt JL. Reduced growth of soybean seedlings after exposure to weak microwave radiation from GSM 900 mobile phone and base station. Bioelectromagnetics 2015; 36:87-95. [PMID: 25644316 DOI: 10.1002/bem.21890] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 11/03/2014] [Indexed: 11/11/2022]
Abstract
The aim of this work was to study possible effects of environmental radiation pollution on plants. The association between cellular telephone (short duration, higher amplitude) and base station (long duration, very low amplitude) radiation exposure and the growth rate of soybean (Glycine max) seedlings was investigated. Soybean seedlings, pre-grown for 4 days, were exposed in a gigahertz transverse electromagnetic cell for 2 h to global system for mobile communication (GSM) mobile phone pulsed radiation or continuous wave (CW) radiation at 900 MHz with amplitudes of 5.7 and 41 V m(-1) , and outgrowth was studied one week after exposure. The exposure to higher amplitude (41 V m(-1)) GSM radiation resulted in diminished outgrowth of the epicotyl. The exposure to lower amplitude (5.7 V m(-1)) GSM radiation did not influence outgrowth of epicotyl, hypocotyls, or roots. The exposure to higher amplitude CW radiation resulted in reduced outgrowth of the roots whereas lower CW exposure resulted in a reduced outgrowth of the hypocotyl. Soybean seedlings were also exposed for 5 days to an extremely low level of radiation (GSM 900 MHz, 0.56 V m(-1)) and outgrowth was studied 2 days later. Growth of epicotyl and hypocotyl was found to be reduced, whereas the outgrowth of roots was stimulated. Our findings indicate that the observed effects were significantly dependent on field strength as well as amplitude modulation of the applied field.
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Affiliation(s)
- Malka N Halgamuge
- Department of Electrical and Electronics Engineering, University of Melbourne, Victoria, Australia
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Liman R, Ciğerci İH, Öztürk NS. Determination of genotoxic effects of Imazethapyr herbicide in Allium cepa root cells by mitotic activity, chromosome aberration, and comet assay. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2015; 118:38-42. [PMID: 25752428 DOI: 10.1016/j.pestbp.2014.11.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 11/17/2014] [Accepted: 11/17/2014] [Indexed: 05/12/2023]
Abstract
Imazethapyr (IM) is an imidazolinone herbicide that is currently used for broad-spectrum weed control in soybean and other legume crops. In this study, cytotoxic and genotoxic effects of IM were investigated by using mitotic index (MI), mitotic phases, chromosomal abnormalities (CAs) and DNA damage on the root meristem cells of Allium cepa. In Allium root growth inhibition test, EC50 value was determined as 20 ppm, and 0.5xEC50, EC50 and 2xEC50 concentrations of IM herbicide were introduced to onion tuber roots. Distilled water and methyl methane sulfonate (MMS, 10 mg/L) were used as a negative and positive control, respectively. As A. cepa cell cycle is 24 hours, so, application process was carried out for 24, 48, 72 and 96 hours. All the applied doses decreased MIs compared to control group and these declines were found to be statistically meaningful. Analysis of the chromosomes showed that 10 ppm IM except for 48 h induced CAs but 40 ppm IM except for 72 h decreased CAs. DNA damage was found significantly higher in 20 and 40 ppm of IM compared to the control in comet assay. These results indicated that IM herbicide exhibits cytotoxic activity but not genotoxic activity (except 10 ppm) and induced DNA damage in a dose dependent manner in A. cepa root meristematic cells.
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Affiliation(s)
- Recep Liman
- Faculty of Arts and Sciences, Molecular Biology and Genetics Department, Uşak University, Uşak 64300, Turkey.
| | - İbrahim Hakkı Ciğerci
- Faculty of Science and Literatures, Molecular Biology and Genetics Department, Afyon Kocatepe University, Afyonkarahisar 03200, Turkey
| | - Nur Serap Öztürk
- Faculty of Science and Literatures, Molecular Biology and Genetics Department, Afyon Kocatepe University, Afyonkarahisar 03200, Turkey
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Roux D, Catrain A, Lallechere S, Joly JC. Sunflower exposed to high-intensity microwave-frequency electromagnetic field: electrophysiological response requires a mechanical injury to initiate. PLANT SIGNALING & BEHAVIOR 2015; 10:e972787. [PMID: 25482761 PMCID: PMC4622848 DOI: 10.4161/15592316.2014.972787] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 07/17/2014] [Accepted: 07/17/2014] [Indexed: 05/28/2023]
Abstract
We have monitored the electrical potential variations (EPV) of sunflower plants illuminated by a high-intensity microwave-frequency (2.5 GHz, 1.5 kV/m) electromagnetic field (EMF). We have designed an appropriate set-up that allows parallel temperature and EPV measurements while part of the plant is being exposed to the field. The results show that the considered EMF does not induce plant EPV directly. This electrophysiological response appears only when the EMF leads to a mechanical injury of the tissues via a thermal effect (dielectric heating). Once the plant inner temperature reached a threshold, we systematically observed burn-like lesions associated with the bending of the stem or leaf-stalks. Theses mechanical constraints were rapidly followed by EPVs, moving through the stem.
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Affiliation(s)
- David Roux
- Université d'Avignon et des Pays de Vaucluse; Avignon, France
| | - Alexandre Catrain
- Commissariat Energie Atomique et Energies Alternatives (CEA), Direction des applications militaires (DAM), Gramat, France
| | - Sébastien Lallechere
- Clermont Université, Université Blaise Pascal; Institut Pascal; Clermont-Ferrand, France
- Centre national de la recherche scientifique (CNRS), Unité mixte de recherche (UMR) 6602, Institut Pascal; Aubière, France
| | - Jean-Christophe Joly
- Commissariat Energie Atomique et Energies Alternatives (CEA), Direction des applications militaires (DAM), Gramat, France
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Ciğerci İH, Liman R, Özgül E, Konuk M. Genotoxicity of indium tin oxide by Allium and Comet tests. Cytotechnology 2015; 67:157-63. [PMID: 24337653 PMCID: PMC4294836 DOI: 10.1007/s10616-013-9673-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Accepted: 12/02/2013] [Indexed: 10/25/2022] Open
Abstract
Genotoxic effects of indium tin oxide (ITO) were investigated on root cells of Allium cepa by employing both Allium and Comet assays. A. cepa roots were treated with the aqueous dispersions of ITO at 5 different concentrations (12.5, 25, 50, 75, and 100 ppm) for 4 h. Exposure of ITO significantly increased mitotic index, and total chromosomal aberrations by the Allium test. While chromosome laggards, stickiness, disturbed anaphase-telophase and anaphase bridges were observed in anaphase-telophase cells, c-metaphase and binuclear cells were observed in other cells. A significant increase in DNA damage was also observed at all concentrations of ITO by the Comet assay. These results indicate that ITO exhibits genotoxic activity in A. cepa root meristematic cells.
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Affiliation(s)
- İbrahim Hakkı Ciğerci
- />Biology Department, Faculty of Science and Literatures, Afyon Kocatepe University, 03200 Afyon, Turkey
| | - Recep Liman
- />Molecular Biology and Genetics Department, Faculty of Arts and Sciences, Uşak University, 1 Eylül Campus, 64300 Uşak, Turkey
| | - Emre Özgül
- />Biology Department, Faculty of Science and Literatures, Afyon Kocatepe University, 03200 Afyon, Turkey
| | - Muhsin Konuk
- />Molecular Biology and Genetics Department, Faculty of Engineering and Natural Sciences, Üsküdar University, Altunizade, 34662 Istanbul, Turkey
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Ayrapetyan S, De J. Cell hydration as a biomarker for estimation of biological effects of nonionizing radiation on cells and organisms. ScientificWorldJournal 2014; 2014:890518. [PMID: 25587574 PMCID: PMC4281404 DOI: 10.1155/2014/890518] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 11/04/2014] [Accepted: 11/21/2014] [Indexed: 11/24/2022] Open
Abstract
"Changes in cell hydration" have been hypothesized as an input signal for intracellular metabolic cascade responsible for biological effects of nonionizing radiation (NIR). To test this hypothesis a comparative study on the impacts of different temperature and NIR (infrasound frequency mechanical vibration (MV), static magnetic field (SMF), extremely low frequency electromagnetic field (ELF EMF), and microwave (MW)) pretreated water on the hydration of barley seeds in its dormant and germination periods was performed. In dormant state temperature sensitivity (Q 10) of seed hydration in distilled water (DW) was less than 2, and it was nonsensitive to NIR treated DW, whereas during the germination period (48-72 hours) seeds hydration exhibited temperature sensitivity Q 10 > 2 and higher sensitivity to NIR treated DW. Obtained data allow us to suggest that the metabolic driving of intracellular water dynamics accompanied by hydrogen bonding and breaking is more sensitive to NIR-induced water structure changes in seed bathing aqua medium than the simple thermodynamic processes such as osmotic gradient driven water absorption by seeds in dormant state. Therefore, cell hydration is suggested to be a universal and extrasensitive biomarker for detection of biological effects of NIR on cells and organisms.
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Affiliation(s)
- Sinerik Ayrapetyan
- UNESCO Chair in Life Sciences International Postgraduate Educational Center, 31 Acharian Street, 0040 Yerevan, Armenia
| | - Jaysankar De
- UNESCO Chair in Life Sciences International Postgraduate Educational Center, 31 Acharian Street, 0040 Yerevan, Armenia
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Senavirathna MDHJ, Asaeda T, Thilakarathne BLS, Kadono H. Nanometer-scale elongation rate fluctuations in the Myriophyllum aquaticum (Parrot feather) stem were altered by radio-frequency electromagnetic radiation. PLANT SIGNALING & BEHAVIOR 2014; 9:e28590. [PMID: 24670369 PMCID: PMC4091600 DOI: 10.4161/psb.28590] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Revised: 03/18/2014] [Accepted: 03/18/2014] [Indexed: 06/03/2023]
Abstract
The emission of radio-frequency electromagnetic radiation (EMR) by various wireless communication base stations has increased in recent years. While there is wide concern about the effects of EMR on humans and animals, the influence of EMR on plants is not well understood. In this study, we investigated the effect of EMR on the growth dynamics of Myriophyllum aquaticum (Parrot feather) by measuring the nanometric elongation rate fluctuation (NERF) using a statistical interferometry technique. Plants were exposed to 2 GHz EMR at a maximum of 1.42 Wm(-2) for 1 h. After continuous exposure to EMR, M. aquaticum plants exhibited a statistically significant 51 ± 16% reduction in NERF standard deviation. Temperature observations revealed that EMR exposure did not cause dielectric heating of the plants. Therefore, the reduced NERF was due to a non-thermal effect caused by EMR exposure. The alteration in NERF continued for at least 2.5 h after EMR exposure and no significant recovery was found in post-EMR NERF during the experimental period.
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Affiliation(s)
| | - Takashi Asaeda
- Department of Environmental Science and Technology; Saitama University; Sakura-ku, Saitama City, Saitama, Japan
| | | | - Hirofumi Kadono
- Department of Environmental Science and Technology; Saitama University; Sakura-ku, Saitama City, Saitama, Japan
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Pesnya DS, Romanovsky AV. Comparison of cytotoxic and genotoxic effects of plutonium-239 alpha particles and mobile phone GSM 900 radiation in the Allium cepa test. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2013; 750:27-33. [DOI: 10.1016/j.mrgentox.2012.08.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Revised: 08/05/2012] [Accepted: 08/30/2012] [Indexed: 01/10/2023]
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Pietak AM. Structural evidence for electromagnetic resonance in plant morphogenesis. Biosystems 2012; 109:367-80. [DOI: 10.1016/j.biosystems.2012.01.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 01/13/2012] [Accepted: 01/13/2012] [Indexed: 10/14/2022]
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Singh HP, Sharma VP, Batish DR, Kohli RK. Cell phone electromagnetic field radiations affect rhizogenesis through impairment of biochemical processes. ENVIRONMENTAL MONITORING AND ASSESSMENT 2012; 184:1813-1821. [PMID: 21562792 DOI: 10.1007/s10661-011-2080-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Accepted: 04/11/2011] [Indexed: 05/30/2023]
Abstract
Indiscriminate adoption and use of cell phone technology has tremendously increased the levels of electromagnetic field radiations (EMFr) in the natural environment. It has raised the concerns among the scientists regarding the possible risks of EMFr to living organisms. However, not much has been done to assess the damage caused to plants that are continuously exposed to EMFr present in the environment. The present study investigated the biochemical mechanism of interference of 900 MHz cell phone EMFr with root formation in mung bean (Vigna radiata syn. Phaseolus aureus) hypocotyls, a model system to study rhizogenesis in plants. Cell phone EMFr enhanced the activities of proteases (by 1.52 to 2.33 times), polyphenol oxidases (by 1.5 to 4.3 times), and peroxidases (by 1.5 to 2.0 times) in mung bean hypocotyls over control. Further, EMFr enhanced malondialdehyde (an indicator of lipid peroxidation), hydrogen peroxide, and proline content, indicating a reactive oxygen species-mediated oxidative damage in hypocotyls. It was confirmed by the upregulation in the activities of antioxidant enzymes (superoxide dismutase, ascorbate peroxidase, guaiacol peroxidase, catalase, and glutathione reductase) suggesting their possible role in providing protection against EMFr-induced oxidative damage. The study concluded that cell phone radiations affect the process of rhizogenesis through biochemical alterations that manifest as oxidative damage resulting in root impairment.
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Affiliation(s)
- Harminder Pal Singh
- Department of Environment and Vocational Studies, Panjab University, Chandigarh, 160014, India.
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Hintzsche H, Jastrow C, Kleine-Ostmann T, Schrader T, Stopper H. 900 MHz radiation does not induce micronucleus formation in different cell types. Mutagenesis 2012; 27:477-83. [DOI: 10.1093/mutage/ges007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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