The calcium ion(Ca2+)is known as a key second messenger in plants,intracellular Ca2+ signals are relayed to downstream(transcription factors,NADPH oxidases genes)via different calcium sensor proteins(CaMs,CaMLs,CBLs,CDPKs),which further causes expression of related genes and responses to abiotic and biotic stresses.Calcium-dependent protein kinases(CDPKs)which are Ser/The protein kinases found in plants and some protozoa,play crucial roles in Ca2+-mediated signaling pathways.CDPKs are encoded by multigene f...