FIGURE 6.

The resistance ofAtran1mutant plants toPseudomonas syringaepv.tomato(Pst) DC3000 andSclerotinia sclerotiorumin response to chitin. (a) Disease symptoms caused by Pst DC3000 on individual leaves of indicatedArabidopsislines. Plants were photographed 5 days postinoculation and 1 day after chitin treatment. Representative two leaves from one of three experiments are shown. Quantitative analysis of bacterial growth in planta after inoculation with Pst DC3000. (b) Five‐week‐old mature plants were pretreated (24 hr before pathogen inoculation) with chitin, and then, leaves were inoculated with S. sclerotiorum by attaching a 4 mm diameter hyphal plug onto surface of detached leaves. Representative two leaves from one of three experiments are shown. Lesion size was measured 24 hr after inoculation. Means ± SE of three independent experiments are shown. Statistical analysis was carried out using a two‐way analysis of variance (ANOVA) with GraphPad Prism software. Different letters denote statistically significant differences among different treatments as determined by ANOVA (LSD test,p < .05)