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.
出处
《西北植物学报》
CAS
CSCD
北大核心
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)
关键词
花粉管
孢子体
配子体
生长
引导
pollen tube
sporophyte
gametophyte
growth
guidance
作者简介
张静文（1987-），硕士，主要从事植物细胞遗传和牧草育种研究。E-mail：zhangjingwen2009@lzu．cn
通讯作者：王晓娟，教授，主要从事植物细胞遗传和牧草育种研究。E-mail：xiaojuanwang@lzu．edu．cn
