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Nanosilicon alters oxidative stress and defence reactions in plants: a meta-analysis, mechanism and perspective
Environmental Science: Nano ( IF 5.8 ) Pub Date : 2022-08-09 , DOI: 10.1039/d2en00478j
Ningke Fan 1 , Chunjie Zhao 1 , Le Yue 1 , Haihua Ji 1 , Xie Wang 2 , Zhenggao Xiao 1 , Sergio Rasmann 3 , Zhenyu Wang 1
Affiliation  

Alleviating the adverse effects of abiotic and biotic stress factors on crop plants is essential to achieve higher productivity for satisfying the future food demands of the rapidly-growing global human population. The application of Si nanomaterials (Si NMs) could be an ecologically-sound alternative, as there is evidence that Si NMs could positively mitigate oxidative stress in plants. However, not all studies report clear positive effects of Si NM amendment, suggesting a high level of context-dependency. To explore variation in Si NM benefits on plants, we conducted a meta-analysis of 51 independent studies conducted worldwide. We found that Si NM addition overall increased antioxidant enzyme activities (16.3%), antioxidant metabolite contents (15.2%) and defence-related gene expression (178.2%), overall decreasing oxidative stress in plant by 24.0%. These effects varied depending on several factors such as application dose, application duration and application method. Moreover, we observed that Si NM-mediated effects on plant physiology could last several weeks, but this depended on the application dose of Si NMs. Therefore, we conclude that Si NMs could be further developed as an efficient and environmentally-friendly alternative to synthetic agrochemicals for plant stress mitigation.

中文翻译:

纳米硅改变植物的氧化应激和防御反应:荟萃分析、机制和观点

减轻非生物和生物胁迫因素对作物植物的不利影响对于实现更高的生产力以满足快速增长的全球人口未来的粮食需求至关重要。硅纳米材料 (Si NMs) 的应用可能是一种生态无害的替代品,因为有证据表明硅纳米材料可以积极减轻植物的氧化应激。然而,并非所有研究都报告了 Si NM 修正的明显积极影响,表明高度依赖于环境。为了探索 Si NM 对植物的益处的变化,我们对全球进行的 51 项独立研究进行了荟萃分析。我们发现 Si NM 添加总体上增加了抗氧化酶活性 (16.3%)、抗氧化代谢物含量 (15.2%) 和防御相关基因表达 (178.2%), 整体降低植物的氧化应激 24.0%。这些影响因施用剂量、施用持续时间和施用方法等几个因素而异。此外,我们观察到 Si NM 介导的对植物生理学的影响可持续数周,但这取决于 Si NM 的应用剂量。因此,我们得出结论,Si NMs 可以进一步开发作为合成农用化学品的有效且环保的替代品,用于缓解植物胁迫。
更新日期:2022-08-09
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