IAA indole-3-acetic acid

Fig. 194 IAA. Molecular structure.click for a larger image
Fig. 194 IAA . Molecular structure.

IAA (indole-3-acetic acid or indolacetic acid)

the most thoroughly investigated type of AUXIN, which has been extracted from various natural sources.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005