花粉管生长和极性引导的孢子体和配子体控制研究进展  

Research Progress on Mechanisms of Sporophytic and Gametophytic Control of the Pollen Tube Growth and Guidance

作　　者：张静文[1] 金樑[1] 李晶[1] 邓志刚 王晓娟[1] 

机构地区：[1]兰州大学草地农业科技学院,兰州730020

出　　处：《西北植物学报》2012年第8期1712-1718,共7页Acta Botanica Boreali-Occidentalia Sinica

基　　金：兰州大学中央高校基本科研业务费专项(lzujbky-2010-1)

摘　　要：双受精是被子植物特有的生殖方式,精细胞只有通过花粉管穿过花柱才能到达子房、胚珠受精。花粉管在母本组织中的生长和引导包括孢子体控制(sporophytic control)和配子体控制(gametophytic control)两个连续的过程,现已克隆出不同阶段花粉管生长和引导的基因,通过分析其表达调控揭示出花粉管生长和引导的分子机制。该文就近年来国内外有关花粉管生长和极性引导的调控机制研究进展进行综述,并对禾本科(Poaceae)和十字花科(Brassicaceae)植物花粉管引导的异同点进行了比较分析。Double fertilization is a unique characteristic trait of flowering plants. Sperm cells have lost mobil- ity and are transported from the stigma to the female gametophyte via the pollen tube to achieve double fertilization. Pollen tube growth and guidance is Iargely governed by the maternal sporophytic tissues of the stigma, style and ovule. However, the last phase of the pollen tube path is under female gametophytic control. Many genes involved in different stages of pollen tube guidance have been isolated. In this paper, mechanisms of cellular development,genes and chemical compounds involved in the process of sporophytic control and gametophytic control of pollen tube growth and guidance were reviewed. Differences of pollen tube growth and guidance between Poaceae and Brassicaceae plants were also compared.

关 键 词：花粉管 孢子体 配子体 生长 引导 

分 类 号：Q945.7[生物学—植物学] Q945.45