SUMMARYWe show that OsSERK2 is a regulator of innate immune signaling mediated by multiple non-RD receptor kinases (RKs) including XA21, XA3, and OsFLS2. OsSerk2-silenced rice lines are impaired in XA21-mediated immunity to Xoo PXO99, XA3-mediated immunity to Xoo PXO86, and OsFLS2-mediated defense responses. Thus, OsSERK2 is broadly involved in PRR-mediated immunity in rice.
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