Fig. 7.

XND1 mediates the inhibition of xylem formation by flg22 and resistance to R. solanacearum. a, b Plants of the indicated genotype were grown for 4 days in the absence (mock) or in the presence of 0.25 µM flg22 (flg22). R2 and R3 root segments (see Fig. 5a) were cross-sectioned and xylem area (a) and xylem vessel number (b) were measured. Data are means ± SE from 18–50 sections in 6–10 plants and two independent experiments. One-way ANOVA (Fisher’s LSD, P < 0.05) was used to test the significance of the data. c The indicated genotypes were inoculated with R. solanacearum through root dipping and plant survival (in %) was scored at the indicated days postinoculation. Cumulated data from three independent biological experiments, each with three technical repeats comprising at least 24–32 plants. Stars indicate significant differences from Col-0 based on a Gehan–Breslow–Wilcoxon test (P < 0.0001). The Col-0 and xnd1–3 curves were not significantly different (P = 0.1304). d in planta growth measurement of R. solanacearum at 3 days after inoculation of the indicated genotypes. Each dot represents a replicate of two plants and the black line indicates the mean of all the replicates. Cumulated data from four independent biological repeats. Asterisks indicate a significant difference with Col-0 (Mann–Whitney test; P < 0.05)