Figure 7
The function of OAS-A1 on sulphur metabolism and cadmium stress. a) Total sulphur and sulphate ion levels were measured in dry matter obtained from plants grown for 27 days in soil saturated with 25% Hoagland solution. b) Total water-soluble non-protein sulfhydryl (thiol) compounds were measured in fresh materials obtained from 27-day-old plants. Above-ground parts of 27-day-old plants were harvested for measurement of total sulphur, sulphate ion and thiols content. Data are shown as mean ± sd of four replicates (17 plants for each replicate). Bars with the same letters indicate values that are not significantly different from each other after Duncan multiple variant significance test at a significance level of p < 0.05. c) Effect of CdCl2 on fresh weight of old3-1, old3-2 and their respective wild types. Fresh weight was measured after 16 days of growth on the indicated concentration of CdCl2. Fresh weight is expressed as percentage of the fresh weight when grown without CdCl2 (set at 100). Data are shown as mean ± sd of three replicates (20 seedlings for each replicate).