The Role of Cytochrome P450 Monooxygenases in the Regulation of Plant Hormones

Plant hormones are tiny organic regulators that control many aspects of plant life, including growth, development, and responses to environmental stress, moving through localized and long-distance pathways. Key hormone groups like auxins, gibberellins, cytokinins, abscisic acid, and ethylene interact with newer ones such as jasmonates, brassinosteroids, and salicylic acid, all managed by cytochrome P450 (CYP450) monooxygenases, which regulate their biosynthesis, metabolism, and degradation. These enzymes play vital roles in maintaining hormonal balance, enabling plants to adapt to stresses, promoting growth, and improving crop yields and resilience. Their precise control over hormone levels directly impacts processes like seed germination, stem elongation, stress responses, and defense mechanisms, essential for sustainable agriculture amid climate challenges. Understanding P450 functions enhances strategies for crop improvement, stress tolerance, and resistance to herbicides and pests, essential for future food security.