Interestingly, already hypersusceptible bkk1‐1/bak1‐5 plants were even more susceptible to DC3000 infection at 450 μmol m−2 s−1, suggesting that this moderate light intensity uncouples immunity through pathways independently of those guarded by classical MTI signalling (Figure 7), and/or that MTI signalling is less effective at increased light intensity. This evidence concerns the gene BAK1 and infection.