Nuclear DNA amounts in angiosperms - 583 new estimates
Nuclear DNA amounts in angiosperms - 583 new estimates
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DOI：
10.1006/anbo.1997.0415
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发表时间：
1997-08-01
期刊：
影响因子：
4.2
通讯作者：
Leitch, IJ
中科院分区：
文献类型：
--
作者：
Bennett, MD;Leitch, IJ
未复制的单倍体核基因组中的 DNA 量（其 C 值）在被子植物物种之间相差超过 600 倍。关于这一特性的信息被广泛应用于各种植物生物学领域。此外，最近的研究指出，迫切需要更多有关基因组生物多样性这一重要方面的信息。 Bennett 和合著者出版了四份被子植物物种核 DNA 含量收集列表，主要出于参考目的而编制，包括 1995 年最新的一份（Annals of Botany 76：113-176）。他们共同列出了 2500 多个物种的估计值，约占全球被子植物区系的 1%。正如最近发表的许多新估计所示，人们对被子植物基因组大小的兴趣仍然很高，因此需要第五次汇编。本文提出了上述汇编中未列出的 471 个被子植物物种的 37 个来源的核 DNA C 值补充列表，以及已列出的 113 个物种的附加估计值。它包含对棕榈、兰花和热带硬木物种的估计，这显着提高了全球植物区系的代表性。正在进行的工作是将本文和上述论文中汇编的基因组大小数据合并到一个统一的数据库中，并将信息以单独的列表形式呈现，物种分别按字母顺序和系统顺序排列。同时，被子植物物种 DNA C 值的可用性可以在万维网 (http://www.rbgkew.org.uk/cval/database1.html) 上检查。 (C) 1997 年植物学公司年鉴。
The amount of DNA in the unreplicated haploid nuclear genome (its C-value) varies over 600-fold between angiosperm species. Information regarding this character is used in a strikingly wide variety of plant biological fields. Moreover, recent studies have noted a significant need for more information about this important aspect of genome biodiversity. Bennett and co-authors have published four collected lists of nuclear DNA amounts in angiosperm species, compiled primarily for reference purposes, including the most recent in 1995 (Annals of Botany 76: 113-176). Together they list estimates for over 2500 species which represent about 1% of the global angiosperm flora. Interest in angiosperm genome size has remained high, as shown by the recent publication of many new estimates, creating a need for a fifth compilation. This paper presents a supplementary list of nuclear DNA C-values from 37 sources for 471 angiosperm species not listed in the aforementioned compilations, plus additional estimates for 113 species already listed by them. It contains estimates for palm, orchid and tropical hardwood species which significantly improves representation of the global flora. Work is in hand to combine the genome size data compiled in this and the aforementioned papers into a unified database, and to present the information in separate lists, with species in alphabetical and systematic orders, respectively. Meanwhile, the availability of DNA C-values for angiosperm species can be checked on the World Wide Web (http://www.rbgkew.org.uk/cval/database1.html). (C) 1997 Annals of Botany Company.