Research on nanotechnology as an emerging discipline has advanced several branches of technology. Although iron is considered as an essential element for plant growth, its role in mitigating abiotic stresses has not been studied widely. Therefore, in this research, it has been attempted to investigate the effect of magnetic Fe₃o₄ nanoparticles on tomato plants under cadmium stress using 5 levels of magnetic (Fe₃O₄) nanoparticles (nano-Fe₃O₄) (0, 10, 20, 50, 100 mg/L) and 3 levels of CdCl₂ (0, 100, 200 μM). Cadmium reduced growth and photosynthesis parameters as well as nutritional elements and increased the content of MDA, H₂O₂, and proline in tomato plants. Meanwhile 20 mg/L nano-Fe₃o₄ was able to improve cadmium toxicity by reduction in cadmium accumulation and increase in nutrient intake. However, 20 mg/L nano-Fe₃o₄ is potentially useful for plant growth and may motivate the variations of plants defense mechanisms in response to cadmium toxicity.

纳米技术作为一门新兴学科的研究已经推动了技术的多个分支。尽管铁被认为是植物生长的必需元素，但其在缓解非生物胁迫方面的作用尚未得到广泛研究。因此，在该研究中，已经尝试来调查磁性的Fe效果₃ ö ₄纳米颗粒对番茄使用5个级别的磁镉胁迫下的植物（铁₃ ö ₄）纳米颗粒（纳米的Fe ₃ ö ₄）（0， 10、20、50、100 mg / L）和3种水平的CdCl ₂（0、100、200μM）。镉会降低生长和光合作用参数以及营养元素，并增加MDA，H ₂ O的含量₂，脯氨酸在番茄植株中。同时20 mg / L纳米Fe ₃ o ₄能够通过减少镉的积累和增加养分的摄入来改善镉的毒性。但是，20 mg / L纳米Fe ₃ o ₄可能对植物生长有用，并且可能会激发植物防御机制对镉毒性的响应。