Figure 1

Analysis of susceptibility to F. culmorum infection in four downy mildew resistant ( dmr ) mutant lines, compared to wild- type L er- 0 and the parental genotype L er- 0 eds1- 2 . Six plants per genotype were scored for (a) floral disease levels, (b) silique disease levels, (c) the number of healthy siliques, and (d) the number of infected rosette leaves, at 7, 11 and 14 days post inoculation (dpi). For the floral and silique evaluations the FAD- Fusarium-Arabidopsis Disease scoring system was used. Asterisks indicate genotypes significantly different from eds1-2 at each time point (regression analysis followed by calculation of LSDs, p = <0.05). Error bars represent standard error of the mean. The experiment was repeated with similar results. Since the dmr6 mutant flowers approximately 1 week later than eds1-2, dmr6 plants were used in this experiment were 1 week older than those of other genotypes, and therefore rosette leaf data were not comparable due to increased senescence in the dmr6 mutant.