Figure 3.

Key enzymes activities of S assimilation pathway and glutathione (GSH) metabolism. (A,B) ATP sulfurylase (ATPS); (C,D) O-acetylserine(thiol)lyase (OASTAL); (E,F) γ-glutamylcysteine synthetase(γ-ECS) and (G,H) GST activity in leaves and roots of Aikangqing and Qibaoqing. The leaves and roots of three seedlings were separately collected in one replication and three independent biological replications were performed. Different letters indicate significant differences at a p < 0.05 significance level.