植物多肽信号分子RALF的研究进展

Research on plant polypeptide signal RALF

多肽信号分子调控生物体的生长发育过程,在动物、细菌、真菌中广泛存在,而植物多肽成分的信号分子直到1991年才首次报道,但随后即从植物中陆续分离出多种多肽类生长调节因子。快速碱化因子(rap id alkalin ization factor,RALF)就是其中的一种,它广泛存在于植物中。被证明在植物多个器官的不同发育时期都表达,具有使植物组织生长的培养基碱化、抑制根生长等多种作用。现对RALF同源基因的特征以及表达情况、RALF多肽的结构及生理功能等进行介绍,为RALF的进一步研究提供参考。

Polypeptide signals are ubiquitous in animals,bacteria and fungi,and regulate growth and development process of biology.In 1991 polypeptide signal was reported for the first time in plant.After that,several plant polypeptide signals were separated.The rapid alkalization factor(RALF) is one of those expressed in many plants'different tissues during their developments.RALF has the effects of alkalizing mediums where plant's tissues growing and resting roots' growth.The homology genes' characters,spatial and temporal expression pattern and the structure and functions of RALF were introduced in this paper.