phlD

The phlD gene encodes a protein involved in the biosynthesis of the plant hormone auxin. Specifically, it is a key enzyme in the phenylacetic acid (PAA) pathway for auxin production. This pathway is utilized by various microorganisms, including some plant-associated bacteria, to generate auxin, which can then influence plant growth and development. The phlD protein belongs to the flavin-dependent monooxygenase family and catalyzes an oxygenation reaction. Its presence is often associated with the ability of a microorganism to produce auxin via the PAA route. Studies have investigated the role of phlD in plant-microbe interactions, as the auxin produced can promote root elongation, enhance nutrient uptake, and contribute to overall plant health. The expression of phlD can be regulated by environmental factors, and its activity is crucial for the efficient conversion of phenylacetic acid precursors into active auxin. Understanding the function of phlD contributes to our knowledge of microbial contributions to plant physiology and the complex signaling networks between plants and their associated microbes.