Figure 2.

The t_1/2 of IAA in the 3F7-11 line of L. gibba. Turnover was determined by GC-MS analysis of the endogenous IAA pool enrichment at T₀ and after a 1-h incubation of plants that had been prelabeled for 1 h in 10⁻⁷ m [¹³C₆]IAA (see “Materials and Methods”). Data shown are the mean for four to 16 replicate experiments, and bars indicate se.