Fig. 5. Fraction of soil total metal removed by each treatment, expressed as [(initial metal concentration - final metal concentration)/initial metal concentration] x 100%. Shown values are the means and standard errors of 10 replicate pots (after harvest one sample was taken from each pot after soil homogenization). 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).