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桡足类(甲壳纲)的染色质消减:模式、生物学作用及进化方面

Chromatin diminution in Copepoda (Crustacea): pattern, biological role and evolutionary aspects.

作者信息

Grishanin Andrey

机构信息

Papanin Institute for Biology of Inland Waters Russian Academy of Sciences 152742, Borok Yaroslavl Prov., Russia.

出版信息

Comp Cytogenet. 2014 Jan 9;8(1):1-10. doi: 10.3897/CompCytogen.v8i1.5913. eCollection 2014.

Abstract

This article provides an overview of research on chromatin diminution (CD) in copepods. The phenomenology, mechanisms and biological role of CD are discussed. A model of CD as an alternative means of regulating cell differentiation is presented. While the vast majority of eukaryotes inactivate genes that are no longer needed in development by heterochromatinization, copepods probably use CD for the same purpose. It is assumed that the copepods have exploited CD as a tool for adaptation to changing environmental conditions and as a mechanism for regulating the rate of evolutionary processes.

摘要

本文概述了桡足类动物染色质消减(CD)的研究。讨论了CD的现象学、机制和生物学作用。提出了一种将CD作为调节细胞分化的替代手段的模型。虽然绝大多数真核生物通过异染色质化使发育过程中不再需要的基因失活,但桡足类动物可能出于相同目的使用CD。据推测,桡足类动物利用CD作为适应不断变化的环境条件的工具,以及作为调节进化过程速率的机制。

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