Loss of BAK1 and BKK1 affects only a subset of the oligogalacturonide (OG)‐induced late defence response genes that are affected by AvrPto. Expression of the indicated late‐induced defence marker genes, analysed by quantitative reverse transcription‐polymerase chain reaction (qRT‐PCR), in seedlings of the wild‐type (Col‐0) and AvrPto‐expressing lines (#4.1 and #5.1) (a) or bak1‐5 bkk1‐1 mutant (b) after 3 h (for PAD3 and PGIP1) and 8 h (for PDF1.2 and PR1) of treatment with water, OGs (50 µg/mL) and flg22. Transcript levels are shown as the mean of at least three independent experiments [± standard error (SE); n = 20 in each experiment] normalized to UBQ5 expression and plotted relative to expression in water‐treated Col‐0. In (a) and (b), asterisks indicate statistically significant differences between mutant and wild‐type samples, according to Student's t‐test (*P < 0.05; **P < 0.01). Please see text for expansion of gene abbreviations.