Figure 6.

SA potentiated ethylene induction in various acs mutants after Pst infection. Twelve-day-old wild-type (Col-0) seedlings and high-order acs mutants were treated with DMSO solvent (−SA) or SA (+SA; final concentration of 100 µm). Two days later, Pst was inoculated (final OD₆₀₀ = 0.02), and ethylene accumulation in the headspace of the GC vials was measured at the indicated times. Error bars indicate sd (n = 3). One-way ANOVA was performed to compare acs mutants and the wild type at the same time point after the same treatment. Lowercase letters above the columns indicate statistically different groups. The two genotypes are considered to produce different amounts of ethylene when two or more time points are significantly different. The allele numbers are omitted for easy labeling. They are acs1-1, acs2-1, acs4-1, acs5-2, acs6-1, acs7-1, acs9-1, and acs11-1. FW, Fresh weight; hpi, hours post inoculation.