Chemical signaling for pollen tube guidance at a glance
Chemical signaling for pollen tube guidance at a glance
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DOI：
10.1242/jcs.208447
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发表时间：
2018-01
影响因子：
4
通讯作者：
Y. Mizuta;T. Higashiyama
中科院分区：
文献类型：
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作者：
Y. Mizuta;T. Higashiyama
摘要花粉管导向系统是植物有性繁殖成功所必需的一种独特的导航系统。由于植物的精细胞是不动的，而卵细胞深深地嵌入雌性组织中，因此花粉管通过向卵细胞所在的胚珠生长来输送它所包含的两个精细胞。花粉管向胚珠的生长受到精确的控制，分为胚珠前和胚珠引导两个阶段。在这篇细胞科学一瞥文章和随附的海报中，我们提供了花粉管引导的全面概述，并强调了在胚珠引导过程中使用的一些引诱肽。我们进一步讨论了精确的一对一的指导系统，存在于多胚珠植物。介绍了利用雌雄间的串话通讯来阻断多根花粉管相互吸引的方法。总结：讨论了植物成功有性繁殖所需的雄雌交调所实现的独特的花粉管导航系统。
ABSTRACT Pollen tube guidance is a unique navigating system that is required for the successful sexual reproduction of plants. As plant sperm cells are non-motile and egg cells are embedded deep inside the female tissues, a pollen tube delivers the two sperm cells that it contains by growing towards the ovule, in which the egg cell resides. Pollen tube growth towards the ovule is precisely controlled and divided into two stages, preovular and ovular guidance. In this Cell Science at a Glance article and accompanying poster, we provide a comprehensive overview of pollen tube guidance and highlight some of the attractant peptides used during ovular guidance. We further discuss the precise one-to-one guidance system that exists in multi-ovular plants. The pollen tube-blocking system, which is mediated by male–female crosstalk communication, to avoid attraction of multiple pollen tubes, is also reviewed. Summary: A discussion of the unique navigating system for pollen tubes achieved by the male–female crosstalk that is required for the successful sexual reproduction of plants.