Plant Response to Metal-Containing Engineered Nanomaterials: An Omics-Based Perspective

Area of Science:

• Environmental Science
• Plant Biology
• Nanotechnology

Background:

• Engineered nanomaterials (ENMs) are increasingly used, raising environmental concerns.
• Understanding plant responses to ENMs is crucial for risk assessment.
• ENM toxicity mechanisms can differ from metal ions and bulk materials.

Purpose of the Study:

• To review and compare plant responses to metal-based ENMs.
• To integrate omics data for a molecular understanding of plant-ENM interactions.
• To identify key genes, miRNAs, and proteins involved in plant defense.

Main Methods:

• Literature review and meta-analysis of existing omics data (transcriptomics, miRNAs, proteomics).
• Comparison of plant responses to quantum dots, metal oxides, and silver nanoparticles.
• Analysis of genetic and molecular mechanisms underlying plant-ENM interactions.

Main Results:

• ENM exposure triggers distinct plant defense mechanisms.
• Key plant responses include root architecture modification, phytohormone signaling, and antioxidant system activation.
• Specific genes, miRNAs, and proteins involved in plant-ENM stress response were identified.

Conclusions:

• Plant defense against ENMs involves complex genetic and molecular pathways.
• Mechanistic understanding of plant-ENM interactions is advancing through omics data integration.
• This review provides a foundation for assessing the ecological risks of ENMs to plants.