拟南芥根帽细胞更新的遗传调控机制

IF 1.1 4区 生物学 Q3 PLANT SCIENCES
V. A. Cherenko, N. A. Omelyanchuk, E. V. Zemlyanskaya
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引用次数: 0

摘要

摘要 空间上分离的细胞分裂和损失过程的同步化对器官和组织结构的更新和维持至关重要;然而,人们对其调控的遗传机制知之甚少。在植物中,位于根尖的根帽能迅速更新,保护干细胞龛免受机械损伤,并发挥其他一些重要功能。尽管由初始细胞(干细胞)分裂产生的子细胞不断供应和分化,但根帽的大小并不会增加,因为根帽顶端的分化细胞会定期脱落。为了严格保持根帽的永久大小,必须使干细胞的分裂与外层细胞的脱落同步进行。拟南芥是植物遗传学的模式物种,其根帽结构简单而有序,老细胞整层脱落,因此是研究根帽更新机制的理想对象。在这篇综述中,我们将探讨连翘根冠结构和大小的维持,并讨论有关这一过程的遗传控制数据以及该领域有前景的研究方向。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Genetic Mechanisms Regulating Root Cap Cell Renewal in Arabidopsis thaliana L.

Genetic Mechanisms Regulating Root Cap Cell Renewal in Arabidopsis thaliana L.

Abstract

Synchronization of spatially separated processes of cells’ division and loss is crucial in renewal and maintenance of organ and tissue structure; however, genetic mechanisms of its regulation are poorly understood. In plants, root cap located at the root tip is quickly renewed protecting the stem cell niche against mechanical injury and performing some other important functions. In spite of continuous supply and differentiation of daughter cells from division of initials (stem cells), the root cap size does not increase because of regular sloughing of differentiated cells at its apex. In order to strictly maintain a permanent size of the root cap, it is important to synchronize divisions of stem cells with removal of the outer cell layer. In Arabidopsis thaliana, which is a model species in plant genetics, root cap structure is plain and well-ordered, and old cells are sloughed as a whole layer; that is why this species is a convenient object for investigation of the mechanisms responsible for root cap renewal. It this review, we will consider maintenance of root cap structure and size in A. thaliana and discuss the data concerning genetic control over this process and promising research avenues in this area.

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来源期刊
CiteScore
4.00
自引率
14.30%
发文量
107
审稿时长
6 months
期刊介绍: Russian Journal of Plant Physiology is a leading journal in phytophysiology. It embraces the full spectrum of plant physiology and brings together the related aspects of biophysics, biochemistry, cytology, anatomy, genetics, etc. The journal publishes experimental and theoretical articles, reviews, short communications, and descriptions of new methods. Some issues cover special problems of plant physiology, thus presenting collections of articles and providing information in rapidly growing fields. The editorial board is highly interested in publishing research from all countries and accepts manuscripts in English.
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