OsRLCK 57, OsRLCK107 and OsRLCK118 Positively Regulate Chitin- and PGN-Induced Immunity in Rice

Background: The receptor-like cytoplasmic kinase, OsRLCK176 has been reported to participate in both chitin-and PGN-induced immunity in rice. Here, we further researched the function of the homologous proteins, OsRLCK57, OsRLCK107 and OsRLCK118, in chitin-and PGN immunity in rice. Findings: Silencing of OsRLCK57, OsRLCK107 and OsRLCK118 suppressed chitin-and PGN-induced immunity responses, including reactive oxygen species generation, defense gene expression. Furthermore, OsRLCK107 could interact with OsCERK1 in a MAMP induced way, which suggested a possible physiological relevance of OsRLCKs107 to OsCERK1 pathway. Conclusions: OsRLCK57, OsRLCK107 and OsRLCK118, positively regulate chitin-and PGN-induced responses in rice, similar to that observed in OsRLCK176.