Figure 2.

SA-induced, pathogen-induced, and senescence-associated patterns of S5H/DMR6 and S3H expression. A, Expression of the S5H/DMR6 and S3H genes during leaf senescence in wild-type (WT) and NahG transgenic plants. YL, Young leaves; ML, mature leaves; ES, early senescence leaves; LS, late senescence leaves. B, S5H/DMR6 and S3H expression were both induced by different concentrations of SA after a 6-h treatment, and S5H/DMR6 was expressed at 10-fold higher levels than S3H. C and D, S5H/DMR6 (C) and S3H (D) expression in wild-type plants inoculated with Pst DC3000 at 1, 2, 4, and 6 dpi; 0 represents untreated wild-type plants, and M represents the mock treatment. The data are presented as means ± se (n = 3).