Figure 4.

Expression levels of the tomato citrate synthase (mCS), glutamate dehydrogenase (GDH), glutamate decarboxylase (GAD), glutamine synthetase (GS), aspartate aminotransferase (AST), and fumarase (FH) genes in non-treated and BTH-treated (BTH) Money Maker and NahG mock tomato plants at 2.5 wpi, determined by real-time qRT-PCR analysis. Values were first normalized to the actine expression level. Expression levels are represented as mean ± standard error of three biological repetitions. An ANOVA analysis was performed for each gene, among the four samples (MM-non-treated, MM-BTH, NahG-non-treated and NahG-BTH). Different letters indicate the statistical significance differences among the four samples with p-value < 0.05.