Fig. 3. Root metal concentrations for the five planted treatments at harvest. Shown values are the means and standard error of 10 replicate pots (one root sample was taken per pot). WT, wild-type Indian mustard; APS, adenosine triphosphate sulfurylase–overexpressing Indian mustard; GS, glutathione synthetase–overexpressing Indian mustard; -ECS, -glutamylcysteine synthetase–overexpressing Indian mustard. The letters above the bars indicate statistically significant groups (t test, compairing each pair, = 0.05).