PIP/PIPL:一类调控植物逆境响应和发育的植物内源性多肽

PIP/PIPL:A Kind of Endogenous Plant Peptide Regulating Plant Stress Response and Development

植物内源性多肽由前体蛋白剪切而成,由天然氨基酸以不同组成和排列方式构成。多肽分泌至细胞外后,被其受体识别,从而调控植物生长发育和逆境响应。PIP(PAMP-induced secreted peptide)/PIP-Like(PIPL)是包含SGPS和GxGH基序的植物内源性多肽,可被受体激酶RLK7(receptor-like kinase 7)识别,在植物抵抗病原菌、病毒和盐害等逆境及调控生长发育过程中扮演重要角色。本文重点阐述了PIP/PIPL家族多肽在植物抵抗逆境胁迫和调控生长发育过程中的信号转导通路,并讨论了该领域尚待解决的一些科学问题和可能的应用方向,以期为PIP/PIPL的深入研究提供参考。

Plant endogenous polypeptides are composed of natural amino acids in different composition and arrangement from the precursor proteins cut into mature polypeptides,which play biological function in development and stress response after secreted outside the cells and recognized by their receptors.The plant endogenous polypeptide family PIP(PAMP induced secret peptide)/PIP-Like(PIPL)contains SGPS and GxGH motifs recognized by receptor like kinase 7(RLK7),and plays important roles in pathogen resistance,virus resistance,salt resistance and development.Here,we review the signal transduction pathways of PIP/PIPL family polypeptides in the process of resistance to stress and development,discuss important unsolved scientific issues,and prospect possible applications,aiming to provide the references on further researches on PIP/PIPL.