ChEBI

A molecular entity capable of donating a hydron to an acceptor (Bronsted base).

A plant growth regulator that modulates the formation of stems, leaves and flowers, as well as the development and ripening of fruit. The term includes endogenous and non-endogenous compounds (e.g. active compounds produced by bacteria on the leaf surface) as well as semi-synthetic and fully synthetic compounds.

Any eukaryotic metabolite produced during a metabolic reaction in plants, the kingdom that include flowering plants, conifers and other gymnosperms.

Any of a group of compounds, both naturally occurring and synthetic, that induce cell elongation in plant stems (from Greek alphaupsilonxialphanuomega, "to grow").