被子植物胚珠发育的分子机理研究进展

Research Progress on Molecular Mechanism of Ovule Development in Angiosperms

胚珠是被子植物雌配子体的载体,是种子的前身,在植物有性生殖过程中占有十分重要的地位,研究胚珠发育的分子进化机制一直是人们关注的热点。拟南芥是植物分子生物学研究的模式植物,为植物器官发育的研究提供理论基础。本研究结合了近年来拟南芥胚珠发育分子机制研究的相关报道,从拟南芥胚珠起源的心皮边缘分生组织、胚珠特性形成、胚珠原基发育、珠被发育、胚囊发育五个方面进行了论述,以此为基础提出对今后胚珠发育研究的建议。

The ovule is the carrier of the female gametophyte of angiosperm and the precursor of the seed,which plays a great role in plant sexual reproduction.The molecular evolution mechanism of ovule development has been the focus of attention.The Arabidopsis thaliana has been a model plant for the field of molecular biology research,which provides the theoretical foundation for the organ development in angiosperms.This study summarized the recent studies on molecular mechanism of ovule formation in Arabidopsis thaliana,and discussed from five aspects,including the carpel margin meristem formation,ovule identity establishment,ovule primordia initiation,integument development and embryo sac development so as to put forward some suggestions for the future research of ovule development.