Phytotoxicity induced by engineered nanomaterials as explored by metabolomics: Perspectives and challenges

Area of Science:

• Environmental Science
• Toxicology
• Plant Science

Background:

• Engineered nanomaterials (ENMs) have widespread applications, raising concerns about their ecotoxicology.
• Traditional plant toxicity assessments (e.g., reactive oxygen species, antioxidant enzymes) offer limited insight into complex biological responses.
• Metabolomics, by analyzing downstream metabolites, provides a holistic view of biological phenomena and nanotoxicity.

Purpose of the Study:

• To explore the role of metabolomics in assessing the phytotoxicity of ENMs.
• To organize and discuss analytical methods for metabolomics in plant nanotoxicity studies.
• To highlight the potential of metabolomics for understanding plant defense and detrimental mechanisms against ENMs.

Main Methods:

• Utilizing metabolomics for comprehensive exploration of metabolic profiles in plants exposed to ENMs.
• Analyzing dominant metabolites and metabolic pathways across different plant species.
• Investigating the relationships between ENM-induced biological responses and metabolic regulation.

Main Results:

• Metabolomics provides a more complete understanding of nanotoxicity compared to traditional methods.
• Metabolic pathways and dominant metabolites show similarities across plant species, indicating universal applicability of metabolomics.
• Significant developments in nanotoxicology have been achieved using metabolomics, though knowledge gaps remain.

Conclusions:

• Metabolomics is a powerful and efficient tool for elucidating ENM phytotoxicity and ecotoxicology.
• Understanding metabolic regulation is crucial for determining plant responses to ENMs.
• Further research is needed to address knowledge gaps concerning ENM-induced metabolic regulation and defense mechanisms in plants.