Sulfur Dioxide Enhances Endogenous Hydrogen Sulfide Accumulation and Alleviates Oxidative Stress Induced by Aluminum Stress in Germinating Wheat Seeds

Figure 2

Effect of SO₂ pretreatment on the contents of reducing sugar and soluble protein in Al-treated grain as shown in (a) and (b), respectively. Wheat grains were pretreated with water (Al) or 1.2 mM SO₂ donor (S + Al) for 12 h (shown from 0′ to 12′/0 h of pretreatment time) and then exposed to 15 mM Al for further 48 h (shown as 12′/0, 12, 24, 36, and 48 h). The symbols * and ** in this figure and following ones stand for significant difference between Al-treated grains with and without SO₂ pretreatment at and , respectively.

(a)

(b)