摘要
被子植物的花粉自落到柱头上开始,花粉和雌蕊组织即发生一系列的相互识别作用,这个过程包括花粉与柱头互作、花粉管极性生长和引导、精细胞在胚囊中释放和完成双受精。近年来,已相继发现并且克隆了花粉与柱头互作以及花粉管生长和引导相关的基因。本文对花粉粘附、水合、萌发以及花粉管生长和引导的分子机制进行了综述,重点讨论了花粉粘附的糖蛋白互作、花粉水合的脂类调控途径以及花粉管极性生长的阿拉伯半乳聚糖蛋白等小分子引导机制,以期为被子植物的繁殖生物学研究提供理论依据。
In angiosperms, a serious of recognition events are involved in pollen-pistil interactions since pollen grains landed on the stigma. Such interaction processes include recognition between pollen and stigma, hydration and germination of pollen grains, pollen tube growth and guidance, sperm release and double fertilization in the embryo sac. In recent years, the genes involved in process of pollen-pistil interactions, pollen tube growth and guidance have been discovered and cloned. In this paper, the advances of adhesion of pollen grains and their hydration, germination and growth have been reviewed. In particular, the machanisms of chemical compounds, such as glycoproteins interactions in pollen adhesion, lipid regulation pathway in pollen hydration and arabinogalactan proteins in polar growth of pollen tube, have been discussed to provide theoretical basis for the reproductive biology in angiosperms.
出处
《草业科学》
CAS
CSCD
北大核心
2014年第1期161-167,共7页
Pratacultural Science
基金
国家自然科学基金(31270558)
兰州大学中央高校基本科研业务费专项资金(lzujbky-2013-86)
关键词
被子植物
花粉-雌蕊互作
粘附
水合
花粉管
angiosperms
pollen-pistil interactions
adhesion
hydration
pollen tube
