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Published on: August 26, 2018
Nanoparticles in Plant Abiotic Stress Resilience
Mario Pagano1, Erika Lunetta2, Marianna Messina2
1Institute of Research on Terrestrial Ecosystems (IRET), National Research Council (CNR), 50019 Florence, Italy.
Frontiers in Bioscience (Landmark Edition)
|July 7, 2026
Summary
Nanoparticles (NPs) enhance plant resilience to climate change stresses like drought and salinity by improving physiological functions. This review details how various NPs, including silicon dioxide and zinc oxide, bolster crop defense mechanisms and growth under adverse conditions.
Area of Science:
- Agricultural Science
- Environmental Science
- Materials Science
Background:
- Climate change and abiotic stresses (drought, salinity, extreme temperatures) severely limit global agricultural productivity.
- Nanoparticles (NPs) show promise in modulating plant physiology, but their comparative performance across diverse stress conditions requires comprehensive understanding.
- This review focuses on silicon dioxide (SiO2), zinc oxide (ZnO), copper oxide (CuO), iron oxide (FeO), silver (Ag), and titanium dioxide (TiO2) NPs.
Purpose of the Study:
- To synthesize recent advances on the mechanistic roles of various NPs in enhancing plant resilience to abiotic stresses.
- To quantify the effectiveness of different NPs in improving plant physiological functions under stress.
- To identify knowledge gaps regarding NP dose optimization, environmental fate, and safety.
Main Methods:
- Literature review synthesizing recent advances on NP applications in plant science.
- Analysis of mechanistic roles of specific NPs (SiO2, ZnO, CuO, FeO, Ag, TiO2) in plant stress response.
- Quantitative assessment of NP effectiveness based on reported experimental data.
Main Results:
- SiO2 NPs enhance antioxidant defense, ion homeostasis, water-use efficiency, and root development under drought and salinity.
- ZnO NPs strengthen antioxidant systems, membrane stability, osmotic adjustment, and nutrient uptake under various stresses.
- CuO NPs reduce heavy metal accumulation, FeO NPs promote growth and photosynthesis, and TiO2 NPs improve salt tolerance by enhancing antioxidant defense and photosynthetic function.
Conclusions:
- NPs offer significant potential for strengthening crop resilience against accelerating climate change-induced stresses.
- Mechanistic insights reveal how NPs modulate plant performance, but knowledge gaps persist regarding optimal dosage, environmental impact, and safety.
- Further research is crucial for the effective and safe integration of nanotechnology into sustainable agriculture.
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