Drought Stress Induces Significant APX Activity Increase in 7-Meter Plants

The response of plants to drought stress involves a complex interplay of physiological and biochemical adjustments. This study investigated the impact of drought stress on the activity of ascorbate peroxidase (APX), a key antioxidant enzyme, in plants of varying heights (2m, 5m, and 7m). Interestingly, a significant increase in APX activity was observed exclusively in the 7m plants subjected to drought conditions, while the enzyme activity in the 2m and 5m plants remained statistically similar to the well-watered control group. This finding suggests a potential correlation between plant height and the magnitude of APX-mediated drought stress response. Further research is needed to elucidate the underlying mechanisms driving this height-dependent variation in APX activity and its implications for plant survival under water deficit conditions.