植物激发子肽Peps的功能研究进展

Research progress on the function of plant elicitor peptides

植物危险相关分子模式(danger-associated molecular patterns, DAMPs)是一类植物体内合成并激活植物免疫的内源信号物质.近些年发现的植物激发子肽(plant elicitor peptides, Peps)是属于DAMPs类的小肽化合物,广泛分布于多种植物体内. Peps来源于前体蛋白(precursor of peptides, PROPEPs)C末端的剪切释放,被细胞膜表面的受体类蛋白激酶(Pep receptors, PEPRs)识别后触发危险相关信号.该信号提高植物耐病虫和损伤的能力,也能调控植物耐盐性和影响植物生长发育等.本文回顾总结了Peps从发现至今的研究进程,包括Peps的形成、识别、信号转导及生物学功能等,展望了未来研究亟需解决的科学问题及在农业生产上的应用.

Danger-associated molecular patterns(DAMPs) are endogenous substances in plants to regulate 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 pathogens and herbivory. In addition, Peps also collaborate with its receptors to mediate salt tolerance and regulate 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.