The Photochemical Inactivation of Indoleacetic Acid Sensitized by Non-Protein Components of Plant Tissues

Abstract

A study has been made of the IAA-destroying activity of the brei of etiolated pea epicotyls other than that due to the enzyme IAA oxidase. The protein-free dialysate sensitizes the destruction of IAA in the light but not in the dark. Blueviolet light is most effective, followed by blue-green, green, red, and yellow.