被子植物花粉管导向胚珠生长的分子机理研究进展  

Progress on Molecular Mechanism of Pollen Tube Oriented Ovule Growth in Angiosperms

作　　者：毕泽楷 王逸伦 李非 Bi Zekai;Wang Yilun;Li Fei(College of Life Sciences,Shandong Agricultural University,Taian,271018)

机构地区：[1]山东农业大学生命科学学院,泰安271018

出　　处：《分子植物育种》2024年第2期578-586,共9页Molecular Plant Breeding

基　　金：山东农业大学SRT项目(S202010434023)资助。

摘　　要：双受精是被子植物特有的生殖方式,主要为花粉管穿过花柱进入子房并在胚囊中释放精细胞,一个精细胞与卵细胞结合,另一个精细胞与中央细胞结合完成双受精的过程。而花粉管的导向生长则是被子植物双受精过程完成的前提,它能够保证精细胞被准确地运送到植物的雌配子体中。花粉管导向分为孢子体导向与配子体导向两个阶段,在配子体导向中,雌雄配子体的互作可精确定向控制花粉管导向胚珠生长,但是雌雄配子体的具体互作机制仍有待研究。因此本研究主要以拟南芥、玉米等模式植物作为主要研究对象,介绍雌雄配子体在调控花粉管导向胚珠生长过程中的分子机理并做简要总结。Double fertilization is a unique repr oductive mode of angiosperms in which the pollen tube passes through the style into the ovary and releases sperm cells in embryo sac,one sperm cell combines with the egg cell,while the other sperm cell combines with the central cell.The pollen tube guided growth is the precondition for the completion of the double fertilization process in angiosperms,which can ensure that sperm cells are accurately transported to the female gametophyte of the plant.Pollen tube guidance can be divided into two stages:sporophyte guidance and gametophyte guidance.In gametophyte guidance,the interaction between male and female gametophytes can precisely control the growth of pollen tube oriented ovules,but the specific mechanism of male and female gametophyte interaction remains to be studied.Therefore,this article will mainly use model plants such as Arabidopsis thaliana and Zea mays L.as the research object to introducing the molecular mechanism of male and female gametophytes in regulating the growth of pollen tubes to ovules and making a brief summary.

关 键 词：花粉管导向 配子体 胚珠 

分 类 号：Q945[生物学—植物学]