Figure 1: Bacterial defence phenotypes of Arabidopsis thaliana F1 hybrids and their parents.

(a) Phenotypes of F1 hybrids and their parents 5 dpi with MgCl2 (10 mM). Fsc and Fcs, reciprocal F1 hybrids, where maternal line is Sei-0 and Col-0, respectively; Fac and Fca, reciprocal F1 hybrids, where maternal line is Aa-0 and Col-0, respectively. (b) Phenotypes of F1 hybrids and their parents 5 dpi with Pseudomonas syringae pv. tomato (Pst) DC3000 (1 × 105 c.f.u. ml−1). (c) Bacterial titer (log10) of F1 hybrids and their parents 0 dpi and 5 dpi with Pst DC3000 (1 × 105 c.f.u. ml−1). **P<0.01 between hybrids and parents (Student’s t-test). Bacterial growth is expressed as mean values of viable bacteria per gram of leaf tissue±s.d.. Error bars indicate s.d.. Data are shown as mean±s.d. (n=8, n means biological replication).