By changing the potassium ion concentration outside guard cells it causes stomata to close when water is scarce, and it induces dormancy by inhibiting shoot growth and seed germination.
Oxidation of this molecule leads to the formation of phaseic acid, one of its activated forms. It is formed after a molecule of Violaxanthin degrades into xanthonin, which changes into an aldehyded form of this. It prevents the uptake of kinetin and slows alpha-amylase synthesis through inhibition of gibberellins. By changing the potassium ion concentration outside guard cells it causes stomata to close when water is scarce, and it induces dormancy by inhibiting shoot growth and seed germination. For 10 points, name this plant hormone, which takes its name from its role in the falling of fruits and leaves.
Oxidation of this molecule leads to the formation of phaseic acid, one of its activated forms.
{abscisic acid}