Figure 6. TMTM maintains sulfur-containing metabolites under sulfur deficiency. (A) Relative glutathione (GSH) level and (B) total glucosinolate (GSL) level in seedlings grown on low sulfate (LS) MGRL medium with addition of TMTM (0, 100 and 1000 μg) and seedlings grown on high sulfate (HS) MGRL medium 2, 4 and 7 days after treatment. Error bars represent SEs from at least 5 independent biological replicates, each with 8 seedlings. Statistical significance was determined by Duncan’s multiple range test with p-value < 0.05, and indicated with lower-case alphabets.