Figure 5.

OAS and thiol contents in leaves of wild-type and transgenic Arabidopsis plants. Rosette leaves of three Arabidopsis wild-type plants (black bars) and three individuals of each independent transgenic plant line with reduced mitochondrial SAT activity (gray bars) were analyzed for OAS (A), Cys (B), and glutathione (GSH; C) after extraction of metabolites with 0.1 m hydrochloric acid. Error bars indicate sd, and asterisks mark significant differences using the unpaired t test. FW, Fresh weight.