Suzuki Nobuhiro, Hasegawa Yasuhiko, Kadomatsu Kanae, Yamakawa Kazuha, Sameshima Miori, Ando Atsumi, Horikoshi Satoshi
Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioicho, Chiyodaku, Tokyo, 102-8554, Japan.
Sumitomo Chemical Co., Ltd, 2-1 Takatsukasa 4-chome, Takarazuka, Hyogo, 665-8555, Japan.
Sci Rep. 2025 Apr 22;15(1):13903. doi: 10.1038/s41598-025-90859-7.
Although positive effects of microwave irradiation on plants have been reported, their underlying mechanisms remain unknown. In this study, we investigated the effects of low microwave irradiation on Arabidopsis thaliana. Interestingly, we found low output (23 W) with oscillating condition (not continuous irradiation) promoted plant growth. The microwave irradiation neither raised the plants' temperature nor induced heat responsive gene expression. Furthermore, overall transcriptome profile in microwave irradiation treated plants were significantly different from heat treated plants, suggesting that growth promotion might be attributed to non-thermal effects of microwave. Transcriptome and metabolome analysis indicated that microwave irradiation altered circadian clock as well as hormonal response especially in auxin and gibberellin, which promoted plant growth by inducing amino acid biosynthesis and stress tolerance, and reducing cell wall thickness. This finding potentially contributes to develop new approach to increase food production through accelerating crop yield in environmentally friendly way.
尽管已有报道称微波辐射对植物有积极影响，但其潜在机制仍不清楚。在本研究中，我们调查了低强度微波辐射对拟南芥的影响。有趣的是，我们发现低输出功率（23瓦）且处于振荡状态（非连续辐射）促进了植物生长。微波辐射既没有提高植物的温度，也没有诱导热响应基因表达。此外，经微波辐射处理的植物的整体转录组图谱与热处理植物的显著不同，这表明生长促进可能归因于微波的非热效应。转录组和代谢组分析表明，微波辐射改变了生物钟以及激素反应，尤其是生长素和赤霉素，它们通过诱导氨基酸生物合成和胁迫耐受性以及减少细胞壁厚度来促进植物生长。这一发现可能有助于开发新方法，以环境友好的方式加速作物产量增长，从而增加粮食产量。
