STRADA and fungal infectious disease: To investigate the role of Arabidopsis LYKs in basal and chitin‐induced resistance to fungal infection, we evaluated the severity of symptoms caused by B. cinerea in lyk2‐1 and lyk2‐2, as well as in cerk1‐2 and lyk5‐2, which carry loss‐of‐function mutations in CERK1 and LYK5, respectively, and are impaired in chitin perception (Cao, Liang, et al., 2014; Miya et al., 2007; Wan et al., 2008).