Senavirathna Mudalige Don Hiranya Jayasanka, Maimaiti Zumulati
Graduate School of Science and Engineering, Saitama University, Sakura-ku, Saitama, Japan.
Electromagn Biol Med. 2024 Oct;43(4):303-311. doi: 10.1080/15368378.2024.2411629. Epub 2024 Oct 3.
The electromagnetic waves of 2.45 GHz microwave frequency have become abundant in environments worldwide. This study assessed the short-term impact of low-intensity 2.45 GHz exposure on young plants. The plants underwent a 48-hour exposure to continuous wave 2.45 GHz microwaves at a power density of 1.0 ± 0.1 W m. Experiments were conducted inside anechoic chambers. After the microwave exposure samples were subjected to morphological, genotoxicity, pigmentation, and physiochemical analysis. Microwave exposure elevated the levels of photosynthetic pigments, oxidative stress, guaiacol peroxidase activity, and ascorbic peroxidase activity in plants. Conversely, catalase activity decreased. Photosystem efficiency remained unchanged, while non-photochemical quenching increased. Leaf morphological parameters exhibited no significant alterations during this brief exposure period. Notably, despite shifts in physiological parameters and pigmentations, genomic template stability remained unaffected. The findings suggest that the non-thermal effects of microwave exposure influence the photosystem and plant physiology. Research confirmed the existence of non-thermal effects of microwave exposure; however, these effects are within tolerable limits for plants.
2.45吉赫兹微波频率的电磁波在全球环境中已十分常见。本研究评估了低强度2.45吉赫兹辐射对幼苗的短期影响。这些植物在功率密度为1.0±0.1瓦/平方米的连续波2.45吉赫兹微波下暴露48小时。实验在消声室内进行。微波暴露后，对样本进行形态学、遗传毒性、色素沉着和理化分析。微波暴露提高了植物中光合色素、氧化应激、愈创木酚过氧化物酶活性和抗坏血酸过氧化物酶活性的水平。相反，过氧化氢酶活性降低。光系统效率保持不变，而非光化学猝灭增加。在这一短暂暴露期间，叶片形态参数未表现出显著变化。值得注意的是，尽管生理参数和色素沉着发生了变化，但基因组模板稳定性未受影响。研究结果表明，微波暴露的非热效应会影响光系统和植物生理。研究证实了微波暴露存在非热效应；然而，这些效应在植物可耐受的范围内。
