Figure 3

Changes in the indole glucosinolate profiles of 12 day old seedlings. Pak choi (Brassica rapa ssp. chinensis) (B.r.) and Arabidopsis thaliana Col-0 (A.th.) seedlings were treated with different concentrations of MeJA as indicated and glucosinolate profiles were determined 48 hours after application. B.r. treatment data are the same as in Figure 2; I3M, indol-3-ylmethyl GS; 4OHI3M, 4-hydroxy-indol-3-ylmethyl GS; 4MOI3M, 4-methoxy-indol-3-ylmethyl GS; 1MOI3M, 1-methoxy-indol-3-ylmethyl GS. 4OHI4M was undetectable in A.th. seedlings. Values represent the mean of three independent samples. Significant differences to the respective control treatment (P < 0.05) as determined using unpaired two-tailed t-test, are marked with an asterisk. For absolute concentrations of glucosinolates please see supporting Additional file 1: Table S2.