The Long Journey of Pollen Tube in the Pistil.

The Long Journey of Pollen Tube in the Pistil.
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花粉管在雌蕊中的漫长旅程

DOI:
10.3390/ijms19113529
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发表时间:
2018-11-09
影响因子:
5.6
通讯作者:
Chen LY
Chen LY
中科院分区:
生物学2区
文献类型:
--
作者:
Zheng YY;Lin XJ;Liang HM;Wang FF;Chen LY

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在非闭花受精的植物中,雄配子体,花粉粒是不动的,并利用各种媒介,如传粉者,风,甚至水,到达可接受的柱头。授粉的复杂过程涉及管状结构,即,花粉管,将两个精细胞传递给雌配子体,使其能够进行双受精。花粉管必须穿过柱头,在花柱组织中生长,穿过隔膜,沿着珠柄生长,然后到达胚珠的珠孔。花粉管和它的两个精细胞在与雌配子体相遇之前是一个漫长的旅程,需要非常精确的调节才能成功受精。本文综述了花粉-雌蕊相互作用的分子对话,特别是花粉管激活和诱导的研究进展,并对今后的研究进行了展望。
In non-cleistogamous plants, the male gametophyte, the pollen grain is immotile and exploits various agents, such as pollinators, wind, and even water, to arrive to a receptive stigma. The complex process of pollination involves a tubular structure, i.e., the pollen tube, which delivers the two sperm cells to the female gametophyte to enable double fertilization. The pollen tube has to penetrate the stigma, grow in the style tissues, pass through the septum, grow along the funiculus, and navigate to the micropyle of the ovule. It is a long journey for the pollen tube and its two sperm cells before they meet the female gametophyte, and it requires very accurate regulation to perform successful fertilization. In this review, we update the knowledge of molecular dialogues of pollen-pistil interaction, especially the progress of pollen tube activation and guidance, and give perspectives for future research.
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