生物技术进展 ›› 2022, Vol. 12 ›› Issue (1): 1-9.DOI: 10.19586/j.2095-2341.2021.0109

• 进展评述 •    下一篇

植物功能着丝粒DNA研究进展

张会1,2(), 王凯1()   

  1. 1.南通大学生命科学学院,江苏 南通 226019
    2.南通大学教务处,江苏 南通 226019
  • 收稿日期:2021-06-15 接受日期:2021-08-05 出版日期:2022-01-25 发布日期:2022-01-26
  • 通讯作者: 王凯
  • 作者简介:张会 E-mail:hzhangfly107@126.com
  • 基金资助:
    国家自然科学基金项目(32070544)

The Research Progress on Plant Functional Centromere DNAs

Hui ZHANG1,2(), Kai WANG1()   

  1. 1.School of Life Science,Nantong University,Jiangsu Nantong 226019,China
    2.Academic Affairs Office,Nantong University,Jiangsu Nantong 226019,China
  • Received:2021-06-15 Accepted:2021-08-05 Online:2022-01-25 Published:2022-01-26
  • Contact: Kai WANG

摘要:

着丝粒(centromere)是真核生物染色体的重要功能结构。在细胞有丝分裂和减数分裂过程中,着丝粒通过招募动粒蛋白行使功能,保障染色体正确分离和传递。真核生物中,含有着丝粒特异组蛋白的CenH3区域被定义为功能着丝粒区,即真正意义上的着丝粒。近年来,借助染色质免疫沉淀技术,人们对功能着丝粒DNA开展了深入研究,揭示其组成、结构及演化特征,并发现功能着丝粒区存在具有转录活性的基因,且部分基因具有重要生物学功能。由于存在大量重复DNA,着丝粒演化之谜一直未能完全揭示。对植物功能着丝粒DNA序列研究进展进行了概述,并重点阐述了着丝粒重复DNA研究的新方法和新进展,以期为深入开展相关研究提供借鉴。

关键词: 功能着丝粒, CenH3, 重复DNA, 演化

Abstract:

The centromere is an important functional region in eukaryotic chromosomes. During cell mitosis and meiosis in eukaryotes, centromere plays a key role in faithful segregation of chromosomes by recruiting the kinetochore. In eukaryotes, the CenH3 region containing centromere specific histones is defined as the functional centromere region, which is the true centromere. In recent years, based on the application of chromatin immunoprecipitation, centromeric DNAs can be readily isolated and characterized. The composition, construction and evolution of centromeres were revealed, and some genes were found with important biological functions. However, because of the high level of diversity of centromeric repetitive DNAs, the evolution of centromeric repetitive DNAs is still elusive. In this paper, the research progress of functional centromere DNA sequences in plants was summarized, and the new methods and progress of centromere repetitive DNAs research were emphasized, which aimed to provide reference for further research.

Key words: functional centromere, CenH3, repetitive DNAs, evolution

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