. "The chemical reactions and pathways resulting in the breakdown of indole-3-acetic acid, a compound which functions as a growth regulator in plants." . . . . . "indoleacetic acid catabolic process" . "IAA catabolic process" . "indole acetic acid catabolic process" . "indole acetic acid catabolism" . "indoleacetic acid breakdown" . "indoleacetic acid catabolism" . "indoleacetic acid degradation" . .