Figure 5
From: Silicon and salicylic acid confer high-pH stress tolerance in tomato seedlings
Effects of alkaline stress on the expression of related genes in tomato plants. (A) LHA1, (B) LHA2, (C) SA-binding protein-like 2, (D) SA methyltransferase, (E) isochorismate synthase, (F) PAL-1, (G) PAL-2, (H) LSi1, (I) catalase, (J) peroxidase, (K) ascorbate peroxidase and (L) superoxide dismutases. Total RNA was extracted from tomato plants grown under pH 6.0 and alkaline stress conditions (pH 9.0) with/without exogenously applied Si, SA and Si + SA for 5 weeks. Transcript levels were measured by real-time qPCR. Actin was used as an internal control. Error bars are calculated based on three biological replicates. *,**, *** and **** indicate a significant difference between treatments at a given pH where P < 0.05, 0.01 and 0.001, respectively, and “ns” indicates non-significant differences. Different letter (s) indicate a significant difference (P < 0.05) among all treatments by DMRT test.
