Cerium oxide nanoparticles promoted lateral root formation in Arabidopsis by modulating reactive oxygen species and Ca2+ level.

IF 2.6 4区 生物学 Q2 PLANT SCIENCES Functional Plant Biology Pub Date : 2024-10-01 DOI:10.1071/FP24196
Guangjing Li, Quanlong Gao, Ashadu Nyande, Zihao Dong, Ehtisham Hassan Khan, Yuqian Han, Honghong Wu
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Abstract

Roots play an important role in plant growth, including providing essential mechanical support, water uptake, and nutrient absorption. Nanomaterials play a positive role in improving plant root development, but there is limited knowledge of how nanomaterials affect lateral root (LR) formation. Poly (acrylic) acid coated nanoceria (cerium oxide nanoparticles, PNC) are commonly used to improve plant stress tolerance due to their ability to scavenge reactive oxygen species (ROS). However, its impact on LR formation remains unclear. In this study, we investigated the effects of PNC on LR formation in Arabidopsis thaliana by monitoring ROS levels and Ca2+ distribution in roots. Our results demonstrate that PNC significantly promote LR formation, increasing LR numbers by 26.2%. Compared to controls, PNC-treated Arabidopsis seedlings exhibited reduced H2 O2 levels by 18.9% in primary roots (PRs) and 40.6% in LRs, as well as decreased O 2 · - levels by 47.7% in PRs and 88.5% in LRs. When compared with control plants, Ca2+ levels were reduced by 35.7% in PRs and 22.7% in LRs of PNC-treated plants. Overall, these results indicate that PNC could enhance LR development by modulating ROS and Ca2+ levels in roots.

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纳米氧化铈颗粒通过调节活性氧和 Ca2+ 水平促进拟南芥侧根的形成
根系在植物生长中发挥着重要作用,包括提供必要的机械支持、水分吸收和养分吸收。纳米材料在改善植物根系发育方面发挥着积极作用,但人们对纳米材料如何影响侧根(LR)形成的了解还很有限。由于具有清除活性氧(ROS)的能力,聚丙烯酸包覆的纳米铈(氧化铈纳米颗粒,PNC)通常用于提高植物的抗逆性。然而,其对 LR 形成的影响仍不清楚。在本研究中,我们通过监测根中的 ROS 水平和 Ca2+ 分布,研究了 PNC 对拟南芥 LR 形成的影响。结果表明,PNC 能显著促进 LR 的形成,使 LR 数量增加 26.2%。与对照组相比,经 PNC 处理的拟南芥幼苗的主根(PRs)中 H2 O2 水平降低了 18.9%,LRs 中降低了 40.6%,PRs 中 O 2 - 水平降低了 47.7%,LRs 中降低了 88.5%。与对照植物相比,经 PNC 处理的植物的 PR 和 LR 中的 Ca2+ 水平分别降低了 35.7% 和 22.7%。总之,这些结果表明,PNC 可通过调节根中的 ROS 和 Ca2+ 水平促进 LR 发育。
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来源期刊
Functional Plant Biology
Functional Plant Biology 生物-植物科学
CiteScore
5.50
自引率
3.30%
发文量
156
审稿时长
1 months
期刊介绍: Functional Plant Biology (formerly known as Australian Journal of Plant Physiology) publishes papers of a broad interest that advance our knowledge on mechanisms by which plants operate and interact with environment. Of specific interest are mechanisms and signal transduction pathways by which plants adapt to extreme environmental conditions such as high and low temperatures, drought, flooding, salinity, pathogens, and other major abiotic and biotic stress factors. FPB also encourages papers on emerging concepts and new tools in plant biology, and studies on the following functional areas encompassing work from the molecular through whole plant to community scale. FPB does not publish merely phenomenological observations or findings of merely applied significance. Functional Plant Biology is published with the endorsement of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian Academy of Science. Functional Plant Biology is published in affiliation with the Federation of European Societies of Plant Biology and in Australia, is associated with the Australian Society of Plant Scientists and the New Zealand Society of Plant Biologists.
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