What is it about?

ROS conduct multiple functions, and specific ROS sources can have beneficial or detrimental effects on plant health. This review explores the complex dynamics of ROS in plant defense mechanisms, focusing on their involvement in basal resistance, hypersensitive response (HR), and systemic acquired resistance (SAR).

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Why is it important?

ROS may act as signaling molecules that inhibit pathogens and activate defense genes, while excess ROS mainly causes oxidative cell damage.

Perspectives

The interplay between ROS and phytohormones such as jasmonic acid (JA), salicylic acid (SA), and ethylene (ET) further complicates the regulatory framework, underscoring the importance of ROS in orchestrating both local and systemic defense responses. Grasping these mechanisms is essential for creating strategies that enhance plant resilience to biotic stresses.

Prof. Ahmad Arzani
Isfahan University of Technology

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This page is a summary of: Interplay Between ROS and Hormones in Plant Defense Against Pathogens, Plants, April 2025, MDPI AG,
DOI: 10.3390/plants14091297.
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