The origin, evolution and proposed stabilization of the terms "genome size' and 'C-value' to describe nuclear DNA contents
The origin, evolution and proposed stabilization of the terms "genome size' and 'C-value' to describe nuclear DNA contents
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DOI：
10.1093/aob/mci019
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发表时间：
2005-01-01
期刊：
影响因子：
4.2
通讯作者：
Bennett, MD
中科院分区：
文献类型：
--
作者：
Greilhuber, J;Dolezel, J;Bennett, MD
背景细读有关核“基因组大小”的文献表明，该术语并不稳定，而是具有不同的含义。它用于完整染色体组（染色体编号为n）的DNA含量，其他人使用“C值”，但也用于仅单倍体染色体组（染色体编号为x）的DNA含量。我们的目的是讨论目前不稳定的使用术语“基因组大小”和“C值”，并提出一个新的统一的术语，可以描述核DNA内容轻松，没有ambiguily.Proposals我们认为，有必要保持基因组大小在广义上作为一个覆盖术语。因为它被广泛理解，简短而悦耳。提出了统一和协商一致的术语建议。在这里，“基因组大小”应该是指基于染色体数目x和n的DNA含量，并且应该主要在一般意义上使用。基因组大小的种类之间的必要区别是由形容词“单倍体”和新词“全倍体”来区分的。“全倍体基因组大小”是个体（以及群体、物种等的概括）的整个染色体互补特征的DNA含量的捷径。无论生殖多倍体、非整倍性等的程度如何。该术语在术语中缺乏，并且出于语言一致性的原因是不可或缺的。单倍体和整倍体基因组大小的缩写术语分别是Cx值和C值。基因组大小的定量数据应始终通过数字前缀（如1C、1Cx、2C等）表示C级。拟议的公约涵盖了与植物和动物基因组大小相关的一般基本方面，但没有详细处理细胞遗传学特性（如单倍体、杂种等）。这将需要在未来的文件中对目前的方案进行微小的扩展。(C)2005年，公司成立。
Background Perusing the literature on nuclear 'genome size' shows that the term is not stabilized, but applied with different meanings. It is used for the DNA content of the complete chromosome complement (with chromosome number n), for which others use 'C-value', but also for the DNA content of the monoploid chromosome set only (with chromosome number x). Reconsideration of the terminology is required.Aim Our purpose is to discuss the currently unstable usage of the terms 'genome size' and 'C-value', and to propose a new unified terminology which can describe nuclear DNA contents with ease and without ambiguity.Proposals We argue that there is a need to maintain the term genome size in a broad sense as a covering term. because it is widely understood, short and phonetically pleasing. Proposals are made for a unified and consensual terminology. In this, 'genome size' should mean the DNA content based on chromosome number x and n, and should be used mainly in a general sense. The necessary distinction of the kinds of genome sizes is made by the adjectives 'monoploid' and the neology 'holoploid'. 'Holoploid genome size' is a shortcut for the DNA content of the whole chromosome complement characteristic for the individual (and by generalization for the population, species, etc.) irrespective of the degree of generative polyploidy, aneuploidies, etc. This term was lacking in the terminology and is for reasons of linguistic consistency indispensable. The abbreviated terms for monoploid and holoploid genome size are, respectively, Cx-value and C-value. Quantitative data on genome size should always indicate the C-level by a numerical prefix, such as 1C, 1Cx, 2C, etc. The proposed conventions cover general fundamental aspects relating to genome size in plants and animals, but do not treat in detail cytogenetic particularities (e.g. haploids, hybrids, etc.) which will need minor extensions of the present scheme in a future paper. (C) 2005 Annals of Botany Company.