A study on effects of cell phone tower-emitted non-ionizing radiations in an Allium cepa test system
Abstract
Overview
This study investigates the effects of non-ionizing electromagnetic radiations emitted from cell phone towers on Allium cepa (onion) plants. The research was conducted using in situ simulations near three different cell phone towers operating at various frequency bands, specifically 800, 900, 1800, and 2300 MHz. Five sites with varying power density measurements, as well as one control site with zero power density, were selected for detailed analysis.
- Five exposure sites (S1–S5) were located at decreasing distances from cell phone towers, yielding mean power densities of 1.05, 1.18, 1.6, 2.73, and 12.9 μW/cm², respectively.
- Control site was established at 50 meters from the towers, exhibiting zero power density.
Findings
- Morphological Changes: Significant changes were observed in the morphology, root length, fresh weight, and dry weight of Allium cepa under various exposure levels.
- Biochemical Alterations: Protein content in both roots and bulbs underwent significant reduction compared to the control, especially at the highest exposure sites (S4 and S5).
- Antioxidant Enzyme Activity: Activities of antioxidative enzymes (APX, SOD, GST, POD, GR) increased significantly across various sites, indicating elevated oxidative stress. Notably, maximum induction was observed at the sites with the highest power densities.
- Genotoxic Effects: Genotoxicity studies indicated the induction of abnormalities at different stages of the cell cycle in onion root tips. The root samples displayed stronger genotoxic responses compared to bulbs, confirming that Allium cepa root tips are highly sensitive bioindicators of radiation toxicity.
Conclusion
The study provides clear evidence that exposure to electromagnetic fields from cell phone towers, especially at higher power densities, causes both oxidative stress and genotoxicity in plants. The findings highlight a strong link between EMF exposure and cellular damage, emphasizing the urgent need for continued research to develop effective protective strategies against the detrimental health impacts of radiation pollution.