Reactive oxygen species (ROS) are central to plant responses under abiotic stress, acting as both damaging agents and signaling molecules. This study explores the balance between ROS production, oxidative damage, and the antioxidant defense mechanisms in plants. Key antioxidant systems include enzymatic defenses (e.g., superoxide dismutase, catalase, and peroxidases) and nonenzymatic antioxidants (e.g., ascorbate and glutathione). These components play critical roles in mitigating oxidative stress. Understanding these mechanisms and their regulation is crucial for enhancing plant stress tolerance. Additionally, investigating the role of ROS in signaling pathways that regulate stress responses can provide deeper insights into plant resilience. Future research should focus on the intricate interplay between ROS and other signaling molecules, utilizing advanced omics technologies to elucidate these complex interactions. By leveraging these insights, strategies such as genetic engineering, marker‐assisted breeding, and metabolic engineering can be employed to develop stress‐resilient crops, equipping them to withstand the challenges posed by climate change. These approaches will ultimately contribute to global food security and sustainable agricultural practices.

Soil contamination with toxic heavy metals such as chromium (Cr) is becoming a serious global problem due to rapid industrial and agricultural activities.