Fig. 2.

Glucosinolate concentrations in wildtype (WT) and gtr1gtr2 dKO leaves in the presence and absence of aphids. Leaves caged for 3 d with or without four aphids were analyzed for glucosinolates. Bars represent means ± SE (N = 11). Different letters indicate statistically significant different glucosinolate concentrations (P < 0.05), see Methods and Material and (Table S2). Total, total leaf glucosinolates. Glucosinolate abbreviations: 3-MSP, 3-methylsulfinylpropyl; 4-MSB, 4-methylsulfinylbutyl; 5-MSP, 5-methylsulfinylpropyl; 7-MSH, 7-methylsulfinylheptyl; 4-MTB, 4-methylthiobutyl; 8-MSO, 8-methylsulfinyloctyl; I3M, indol-3-ylmethyl; 4MOI3M, 4-methoxyindol-3-ylmethyl; 1MOI3M, 1-methoxyindol-3-ylmethyl