Positional signals establishment in the regulation of female germline specification

H. Cai, Suzhuo Ma, Han Su, Kaichuang Liu, M. Aslam, Yuan Qin
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Abstract

The female germline specification process of a single megaspore mother cell (MMC) of ovule primordium (nucellus) is intriguingly complex because it involves the interaction of different pathways tightly linked with positional information. Various Arabidopsis genes, including the stem cell promoting factor WUSCHEL, have already been shown to be involved in this precise regulation process. Recently, there have been some reviews on MMC specialization, mainly from the aspects of epigenetics, microRNAs and gene regulatory networks. However, those reviews have not taken into consideration the function of positional signals in female germline specification. Here, we review the major progress in the cell fate control of female germline specification, highlighting the functions of positional cues.
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位置信号在雌性种系规格调节中的建立
胚珠原基(珠心)单个大孢子母细胞(MMC)的雌性种系形成过程非常复杂,因为它涉及与位置信息紧密相关的不同途径的相互作用。包括干细胞促进因子WUSCHEL在内的各种拟南芥基因已经被证明参与了这一精确的调控过程。近年来,对MMC专门化的研究进展进行了综述,主要从表观遗传学、microrna和基因调控网络等方面进行了综述。然而,这些综述并没有考虑到位置信号在雌性种系规范中的作用。在此,我们综述了女性生殖系规范中细胞命运控制的主要进展,重点介绍了位置线索的功能。
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