Auxins

Auxins (plural of auxin ) are a class of plant hormones (or plant-growth regulators) with some morphogen-like characteristics. Auxins play a cardinal role in coordination of many growth and behavioral processes in plant life cycles and are essential for plant body development. The Dutch biologist Frits Warmolt Went first described auxins and their role in plant growth in the 1920s. Kenneth V. Thimann became the first to isolate one of these phytohormones and to determine its chemical structure as indole-3-acetic acid (IAA). Went and Thimann co-authored a book on plant hormones, Phytohormones,

chemical compound

chemical compound

chemical compound

chemical compound

thumb|right|class=skin-invert-image|UV visible spectrum of tryptophol.

chemical compound

1-Naphthaleneacetamide (NAAm) is a synthetic auxin that acts as a rooting hormone. NAAm is potentially genotoxic and cytotoxic on human peripheral blood lymphocytes in vitro.

Fluroxypyr is an herbicide in the class of synthetic auxins. It is used to control broadleaf weeds and woody brush. It is formulated as the 1-methylheptyl ester (fluroxypyr-MHE).

Indole-3-acetaldehyde (IAL) belongs to the class of organic compounds known as indoles. These are compounds containing an indole moiety, which consists of pyrrole ring fused to benzene to form 2,3-benzopyrrole. It is a metabolite of tryptamine formed by monoamine oxidase (MAO).