Twenty Years of Progress in Physiological and Biochemical Investigation of RALF peptides

A family of secreted peptides known as the RALFs (rapid alkalinization factors) induce rapid alkalinization of the extracellular compartment of plant cells. RALFs are perceived by a family of Catharanthus roseus Receptor Like Kinase 1 Like proteins (CrRLK1Ls), a structurally related family of plasma