Receptor-like cytoplasmic kinase (RLCK) is a speciifc kinase family that it has no extracellular sig-nal peptide domain and transmembrane domain. In plants, the RLCK play key roles in many physiological pro-cesses through phosphorylation down-stream targeted proteins, such as growth, signaling transduction, abiotic and biotic stress responses. This review focused on the classiifcation, biological function a...