Auxin and Cell Elongation

Abstract

One of the most dramatic and rapid hormone responses in plants is the induction by auxin of rapid cell elongation in isolated stem and coleoptile sections. The response begins within 10 minutes after addition of auxin, results in a 5--10 fold increase in the growth rate, and persists for hours or even days (18). It is hardly surprising that this may be the most studied hormonal response in plants.