The expression of SA related marker gene
is upregulated in
lines in response to
. Relative expression of PR1 after P. syringae infection. Four-week old soil-grown plants were sprayed with P.syringae and samples collected at indicated time points for extraction of RNA. Asterisks indicate significant differences, as determined by Student’s t-test (*P < 0.05; two-tailed t test). For each experiment, 3 plants/line and 3 leaves/plant were used.