植物Pep短肽的研究进展

Recent Advances in Plant Pep Peptide

植物利用包括激素和短肽在内的各种内源信号分子,调节自身生长发育和对各种环境胁迫的抗性反应。Pep是植物细胞产生的一类由二十多个氨基酸构成的短肽分子,在被子植物中普遍存在。Pep能够被植物细胞膜上的受体蛋白PEPR识别,进而发挥多种生物学功能。目前的研究表明,Pep既在植物抵抗原菌侵染、昆虫噬咬等生物胁迫以及高盐等非生物胁迫中发挥重要作用,也调控着根生长、叶片衰老等植物生长发育过程。综述了近年来关于Pep的产生、受体识别、信号转导及其生物学功能等方面的研究进展,并对该领域尚待解决的一些科学问题和可能的实际应用方向进行了讨论和展望,以期为相关研究者提供参考。

Plants harness many endogenous signal molecules,including hormones and polypeptides,to orchestrate developmental processes and responses to various environmental stresses.Peps are a class of 20-30 amino acid-long polypeptides that are widely distributed among angiosperms plant species.Peps can be perceived by plasma membrane-associated PEPR receptors and play important roles in multiple aspects of plant growth and defense.It has been reported that Peps are critical for plant defense against biological stresses such as pathogen infection and insect biting,as well as for plant tolerance to abiotic stresses such as high salinity.Moreover,Peps have also been shown to regulate the plant growth and development such as root elongation and leaf senescence.Here,we review recent advances in the generation of Peps,perception of receptor,signal transduction and other biological functions.We also discuss and prospect important unsolved scientific issues in Pep signaling and its potential applications in practice,aiming to provide reference for researchers in this field.