Effects of the application of nanoscale zero-valent iron on plants: Meta analysis, mechanism, and prospects

In order to determine the ideal conditions for the application of nanoscale zero-valent iron (nZVI) in agricultural production, this review studies the effects of nZVI application on plant physiological parameters, presents its mechanism and prospective outcomes. In this research, it was observed th...

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Published in:The Science of the total environment 2023-11, Vol.900, p.165873-165873, Article 165873
Main Authors: Cui, Xuedan, Hou, Daibing, Tang, Yiming, Liu, Meng, Qie, Hantong, Qian, Tuzheng, Xu, Ruiqing, Lin, Aijun, Xu, Xin
Format: Article
Language:English
Subjects:
Meta-analysis
Nanoscale zero-valent iron
Nutrients
Oxidative stress
Photosynthesis
Plant growth
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Summary:In order to determine the ideal conditions for the application of nanoscale zero-valent iron (nZVI) in agricultural production, this review studies the effects of nZVI application on plant physiological parameters, presents its mechanism and prospective outcomes. In this research, it was observed that the application of nZVI had both favorable and unfavorable effects on plant growth, photosynthesis, oxidative stress, and nutrient absorption levels. Specifically, the application of nZVI significantly increased the biomass and length of plants, and greatly reduced the germination rate of seeds. In terms of photosynthesis, there was no significant effect for the application of nZVI on the synthesis of photosynthetic pigments (chlorophyll and carotenoids). In terms of oxidative stress, plants respond by increasing the activity of antioxidant enzyme under mild nZVI stress and trigger oxidative burst under severe stress. In addition, the application of nZVI significantly increased the absorption of nutrients (B, K, P, S, Mg, Zn, and Fe). In summary, the application of nZVI can affect the plant physiological parameters, and the degree of influence varies depending on the concentration, preparation method, application method, particle size, and action time of nZVI. These findings are important for evaluating nZVI-related risks and enhancing nZVI safety in agricultural production. [Display omitted] •The dose of nZVI (0–200 mg·L−1) can significantly promote plant growth.•Most variables respond more strongly to hydroponics than to soil fertilization.•The nZVI produced by the green synthesis method is more friendly to plants.•Smaller nZVI particles (
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2023.165873