The present study assessed the utility of Allium cepa based cyto-genotoxicity bioassays in evaluating the arsenic toxicity and remediation potential of Pteris vittata on contaminated soil of Lakhimpur-Kheri district. Untreated and P. vittata treated soil extracts were used for cyto-genotoxicity tests in A. cepa. Results showed that P. vittata extracted high concentration of arsenic, which ranged from 220 to 1420 mgkg⁻¹ in different soils. Cyto-genotoxic assessment of A. cepa showed that extract of P. vittata treated soil had lower cyto-genotoxic effects as compared to untreated soil. A higher mitotic index (10%) while lower mitotic depression (29%), relative abnormality rate (10%), chromosomal aberrations (1%) and micronuclei (2%) were detected in root meristematic cells of A. cepa exposed to remediated soil extract in comparison to untreated soil. The studies provide a simple, rapid and economic cyto-genotoxicity bioassay tool for evaluating toxicity of contaminated soils of contaminated soils as well as revealed the phytoremdiation property of P. vittata against arsenic toxicity.

本研究评估了基于洋葱 cepa的细胞遗传毒性生物测定法在评估Pteris vittata对 Lakhimpur-Kheri 地区污染土壤的砷毒性和修复潜力的效用。未经处理和P. vittata处理的土壤提取物用于A. cepa的细胞遗传毒性测试。结果表明，P. vittata提取的砷浓度较高，在不同土壤中的砷含量在220 到1420 mgkg ^-1之间。A. cepa的细胞遗传毒性评估表明P. vittata的提取物与未经处理的土壤相比，处理过的土壤具有较低的细胞遗传毒性作用。在暴露于修复的洋葱的根分生细胞中检测到较高的有丝分裂指数 (10%) 而较低的有丝分裂抑制 (29%)、相对异常率 (10%)、染色体畸变 (1%) 和微核 (2%)与未经处理的土壤相比，土壤提取物。这些研究提供了一种简单、快速和经济的细胞遗传毒性生物测定工具，用于评估受污染土壤的毒性，并揭示了P. vittata对砷毒性的植物修复特性。