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How to Switch from Mitosis to Meiosis: Regulation of Germline Entry in Plants
Annual Review of Genetics ( IF 8.7 ) Pub Date : 2021-11-23 , DOI: 10.1146/annurev-genet-112618-043553
Franziska Böwer 1 , Arp Schnittger 1
Affiliation  

One of the major cell fate transitions in eukaryotes is entry into meiosis. While in single-celled yeast this decision is triggered by nutrient starvation, in multicellular eukaryotes, such as plants, it is under developmental control. In contrast to animals, plants have only a short germline and instruct cells to become meiocytes in reproductive organs late in development. This situation argues for a fundamentally different mechanism of how plants recruit meiocytes, and consistently, none of the regulators known to control meiotic entry in yeast and animals are present in plants. In recent years, several factors involved in meiotic entry have been identified, especially in the model plant Arabidopsis, and pieces of a regulatory network of germline control in plants are emerging. However, the corresponding studies also show that the mechanisms of meiotic entry control are diversified in flowering plants, calling for further analyses in different plant species.

中文翻译:


如何从有丝分裂转变为减数分裂:植物种系进入的调控

真核生物中主要的细胞命运转变之一是进入减数分裂。虽然在单细胞酵母中,这一决定是由营​​养缺乏引发的,但在多细胞真核生物(如植物)中,它处于发育控制之下。与动物相比,植物只有很短的种系,并指导细胞在发育后期成为生殖器官中的母细胞。这种情况证明了植物如何招募减数分裂细胞的根本不同机制,并且始终如一地,已知控制酵母和动物减数分裂进入的调节剂都不存在于植物中。近年来,已经确定了涉及减数分裂进入的几个因素,特别是在模式植物拟南芥中,并且正在出现植物种系控制的监管网络。然而,相应的研究也表明,开花植物的减数分裂进入控制机制是多样化的,需要在不同的植物物种中进一步分析。

更新日期:2021-11-24
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