Auxin is a plant hormone involved in many plant processes, such as growth and development, cell division, phototropism, and apical dominance. Auxins are primarily synthesized in the apical meristems of shoots and roots, with some production in young leaves and flowers. They are then transported to other parts of the plant, including the roots, where they play an important role in the development of root systems. Auxins are also known to be involved in the regulation of other hormones, such as gibberellins and cytokinins. Auxins can be synthesized chemically, or they can be produced biologically by bacteria.
oxin, oxine, aucksin