Danger-associated Molecular Patterns (DAMPs) are endogenous substances in A c c e p t e d https://engine.scichina.com/doi/10.1360/SSV-2021-0137 plants to regulate the plant immunity. Plant Elicitor Peptides (Peps), a new type of DAMPs, are widely distributed in various plants. Peps are released from their precursor protein Precursor of Peptides (PROPEPs)in C-terminal and perceived by receptor protein kinases Pep Receptors (PEPRs) to activate the plant cell immune signaling to defense against

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... hogens and herbivory. In addition, Peps also collaborate with its receptors to mediate the salt tolerance and regulate the plant growth and development. Here, we review the research progress of Peps since their discovery, including the formation, recognition, signal transduction and biological function, and probe into the problems that need to be solved in future research and their application in agricultural production.