Foliar Spray of Cerium Oxide Nanoparticles (CeO₂ NPs) Improves Lead (Pb) Resistance in Rice.

IF 6 2区医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

Antioxidants Pub Date : 2025-05-07 DOI:10.3390/antiox14050552

Hang Zhou, Junjie Liu, Ziyang Chen, Jing An, Jingxin Huo, Qing Bu, Tao Su, Liming Zhao, Xuefeng Shen, Yingbin Xue, Gangshun Rao, Naijie Feng, Dianfeng Zheng, Rui Zhang

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引用次数: 0

Abstract

The widespread use of lead (Pb) has led to serious environmental and human health problems worldwide. The application of oxide nanoparticles (CeO₂ NPs) in alleviating abiotic stress in plants has received extensive attention. In this study, 50 mg·L^-1 CeO₂ NPs can improve Pb resistance and promote rice growth. Specifically, this study observed that CeO₂ 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, CeO₂ NPs upregulated antioxidant metabolites alpha-linolenic acid, linoleic acid, ferulic acid, and kaempferol under Pb stress. In addition, CeO₂ NPs upregulated multiple defense response-related genes, such as OsOPR1 and OsPR10a; RPR10a, 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.

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叶面喷施氧化铈纳米颗粒（CeO2 NPs）提高水稻抗铅能力。

铅的广泛使用在世界范围内造成了严重的环境和人类健康问题。氧化物纳米颗粒（CeO2 NPs）在缓解植物非生物胁迫中的应用受到了广泛关注。在本研究中，施用50 mg·L-1 CeO2 NPs可以提高水稻抗铅能力，促进水稻生长。具体而言，本研究观察到CeO2 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，在Pb胁迫下，CeO2 NPs上调抗氧化代谢物α -亚麻酸、亚油酸、阿威酸和山奈酚。此外，CeO2 NPs上调了多种防御反应相关基因，如oopr1和OsPR10a；RPR10a，通过上调蔗糖和d -葡萄糖改善水稻碳流和能量供应。本研究结果为缓解水稻铅胁迫提供了技术支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Antioxidants Biochemistry, Genetics and Molecular Biology-Physiology

CiteScore

10.60

自引率

11.40%

发文量

2123

审稿时长

16.3 days

期刊介绍： Antioxidants (ISSN 2076-3921), provides an advanced forum for studies related to the science and technology of antioxidants. It publishes research papers, reviews and communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files and software regarding the full details of the calculation or experimental procedure, if unable to be published in a normal way, can be deposited as supplementary electronic material.