Figure 7.

Suggested compensation mechanisms in sultr3;4 mutant seeds. A, Sulfate assimilation pathways and the regulations in mutant seeds reflected by proteomic analyses. The bars indicate protein abundance variation in mature seeds (log₂ volume ratios in mutant seeds versus wild-type seeds). APS, Adenosine-5′-phosphosulfate; GSH, glutathione; OAS, O-acetylserine. B, Glucosinolate levels determined in wild-type and sultr3;4 mutant seeds. The bars represent means ± sd of four biological replicates. Asterisks and red color indicate significant variations (Student’s t test, P < 0.05). See Figure 4C for Cys and GSH levels in mature seeds of the sultr3 mutants. [See online article for color version of this figure.]