氧化铈纳米颗粒（CeO NPs）叶面喷施提高水稻对铅（Pb）的抗性
Foliar Spray of Cerium Oxide Nanoparticles (CeO NPs) Improves Lead (Pb) Resistance in Rice.
作者信息
Zhou Hang, Liu Junjie, Chen Ziyang, An Jing, Huo Jingxin, Bu Qing, Su Tao, Zhao Liming, Shen Xuefeng, Xue Yingbin, Rao Gangshun, Feng Naijie, Zheng Dianfeng, Zhang Rui
机构信息
College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, China.
School of Tropical Agriculture and Forestry, Hainan University, Haikou 570100, China.
出版信息
Antioxidants (Basel). 2025 May 7;14(5):552. doi: 10.3390/antiox14050552.
The widespread use of lead (Pb) has led to serious environmental and human health problems worldwide. The application of oxide nanoparticles (CeO NPs) in alleviating abiotic stress in plants has received extensive attention. In this study, 50 mg·L CeO NPs can improve Pb resistance and promote rice growth. Specifically, this study observed that CeO NPs increased the activity of antioxidant enzymes peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX), but the difference did not reach a significant level. At the same time, CeO NPs upregulated antioxidant metabolites alpha-linolenic acid, linoleic acid, ferulic acid, and kaempferol under Pb stress. In addition, CeO NPs upregulated multiple defense response-related genes, such as and ; , and improved rice carbon flow and energy supply by upregulating sucrose and D-glucose. The results of this study provided technical support for alleviating Pb stress in rice.
铅（Pb）的广泛使用已在全球范围内导致严重的环境和人类健康问题。氧化物纳米颗粒（CeO NPs）在缓解植物非生物胁迫方面的应用受到了广泛关注。在本研究中，50 mg·L的CeO NPs可提高水稻对铅的抗性并促进其生长。具体而言，本研究观察到CeO NPs提高了抗氧化酶过氧化物酶（POD）、过氧化氢酶（CAT）和抗坏血酸过氧化物酶（APX）的活性，但差异未达到显著水平。同时，CeO NPs在铅胁迫下上调了抗氧化代谢产物α-亚麻酸、亚油酸、阿魏酸和山奈酚。此外，CeO NPs上调了多个与防御反应相关的基因，如 和 ； ，并通过上调蔗糖和D-葡萄糖改善了水稻的碳流和能量供应。本研究结果为缓解水稻铅胁迫提供了技术支持。
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