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Article Abstract
The current concepts emphasize the fundamental role of reactive oxygen species (ROS) as signaling molecules that coordinate defense mechanisms, cell death, and the growth and development processes in plants. However, due to the inherent reactivity of ROS, achieving precise control over their levels within plant cells, both spatially and temporally, becomes important to effectively harness the potential of ROS signaling while concurrently minimizing the risk of oxidative damage. Ascorbate is an exceptional antioxidant and contributes to the antioxidant defense system in plants. Its role is further reinforced by the presence of ascorbate peroxidases and enzymes responsible for recycling ascorbate from its oxidized forms. Ascorbate metabolism plays a pivotal role in averting oxidative damage and facilitates meticulous regulation of ROS signal availability. This chapter outlines the preferred protocol for the measurement of ascorbate.
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