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Review
. 2021 Aug 21;10(8):1730.
doi: 10.3390/plants10081730.

Green Synthesized Metal Oxide Nanoparticles Mediate Growth Regulation and Physiology of Crop Plants under Drought Stress

Nadiyah M Alabdallah  1 , Md Mahadi Hasan  2 , Inès Hammami  1 , Azzah Ibrahim Alghamdi  1 , Dikhnah Alshehri  3 , Hanan Ali Alatawi  3
Affiliations
Review

Green Synthesized Metal Oxide Nanoparticles Mediate Growth Regulation and Physiology of Crop Plants under Drought Stress

Nadiyah M Alabdallah et al. Plants (Basel). .

Abstract

Metal oxide nanoparticles (MONPs) are regarded as critical tools for overcoming ongoing and prospective crop productivity challenges. MONPs with distinct physiochemical characteristics boost crop production and resistance to abiotic stresses such as drought. They have recently been used to improve plant growth, physiology, and yield of a variety of crops grown in drought-stressed settings. Additionally, they mitigate drought-induced reactive oxygen species (ROS) through the aggregation of osmolytes, which results in enhanced osmotic adaptation and crop water balance. These roles of MONPs are based on their physicochemical and biological features, foliar application method, and the applied MONPs concentrations. In this review, we focused on three important metal oxide nanoparticles that are widely used in agriculture: titanium dioxide (TiO2), zinc oxide (ZnO), and iron oxide (Fe3O4). The impacts of various MONPs forms, features, and dosages on plant growth and development under drought stress are summarized and discussed. Overall, this review will contribute to our present understanding of MONPs' effects on plants in alleviating drought stress in crop plants.

Keywords: abiotic stress; hydrogen peroxide; malonaldehyde; nanoparticles; oxidative stress.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
The green synthesis of metal oxide nanoparticles (MONPs) is represented schematically. Created with Biorender.
Figure 2
Figure 2
Metal oxide nanoparticles (MONPs) induced drought stress tolerance in plants through a general mechanism. Created with Biorender.
See this image and copyright information in PMC

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