植物类受体激酶分类与信号转导

Receptors are nodes that transmit external signals into cells among living organisms. Receptor-like kinases (RLKs) are a kind of receptors and are conserved in eukaryotes, which can establish signaling circuits to transmit extracellular signals into cells. According to their structural characteristics, RLKs can be divided into two main categories: transmembrane receptor kinases and intracellular receptor kinases (RLCKs). Plant transmembrane receptor kinases have diverse structures and can be divided into 14 categories according to their ectodomain structures, each of which plays different functions in plants. Plant receptor kinases have diverse signal transduction processes, most of which transmit signals in the form of monomers, and individual receptor kinases transmit signals in the form of complexes. The direct target substrates of RLKs are mostly RLCKs. After RLCKs activation, signals are amplified through second messengers such as ROS and Ca2+ or signal transduction kinases MAPKs, which results in the changes in the expression of downstream target genes, and plants respond to external stimuli.