Plant-Derived Anti-TMV Metabolites: Mechanisms, Limitations and Future Perspectives

Area of Science:

• Agricultural Science
• Plant Pathology
• Biochemistry

Background:

• Tobacco mosaic virus (TMV) is a significant global threat to agriculture due to its stability and wide host range.
• Plant-derived metabolites are recognized as eco-friendly antiviral agents for TMV management.
• Existing knowledge on the precise mechanisms of action for these metabolites is incomplete.

Purpose of the Study:

• To review and summarize the diverse anti-TMV mechanisms of action of natural and plant-sourced semisynthetic compounds.
• To consolidate understanding of how these metabolites combat TMV infection.
• To provide a foundation for developing sustainable antiviral strategies.

Main Methods:

• Literature review of studies on plant-derived metabolites and their anti-TMV activities.
• Categorization of metabolites based on their chemical class (alkaloids, flavonoids, terpenoids, phenylpropanoids, glycosides).
• Analysis of reported mechanisms, distinguishing direct viral targeting from indirect host immunity elicitation.

Main Results:

• Plant metabolites act through various mechanisms, including direct inhibition of TMV particles and induction of host defense responses.
• Identified metabolites encompass alkaloids, flavonoids, terpenoids, phenylpropanoids, and glycosides.
• These actions collectively form an integrated defense network that limits viral replication and spread.

Conclusions:

• A comprehensive understanding of anti-TMV mechanisms is crucial for developing effective, sustainable antiviral agents.
• Plant-derived compounds offer a promising avenue for eco-friendly TMV control in agriculture.
• Further research into these mechanisms will guide the rational design of novel antiviral strategies.