Genomic gigantism in the whisk-fern family (Psilotaceae): Tmesipteris obliqua challenges record holder Paris japonica
Genomic gigantism in the whisk-fern family (Psilotaceae): Tmesipteris obliqua challenges record holder Paris japonica
复制标题
DOI：
10.1093/botlinnean/box003
复制
发表时间：
2017-04-01
影响因子：
2.4
通讯作者：
Leitch, Ilia J.
中科院分区：
文献类型：
--
作者：
Hidalgo, Oriane;Pellicer, Jaume;Leitch, Ilia J.
我们报道了最大的蕨类植物基因组的发现(1C=150.61 pg)，这是一种属于蕨科的蕨类植物。通过流式细胞仪估计其基因组大小可与迄今为止报道的单子叶巴黎海棠(Melanthiaceae；1C=152.23 pg)中任何真核生物的最大基因组相媲美。这一新记录的增加使迄今在蕨类植物中遇到的基因组大小范围翻了一番，从97.2pg/1C(0.77-74.84pg/1C)到196倍(0.77-150.61 pg/1C)。这一发现强调了填补我们知识中分类学空白的重要性，以揭示陆地植物不同谱系的基因组大小多样性的全部范围。
We report the discovery of the largest fern genome in Tmesipteris obliqua (1C = 150.61 pg), a species belonging to the whisk-fern family, Psilotaceae. Its genome size estimated by flow cytometry is comparable with the largest genome so far reported for any eukaryote, in the monocot Paris japonica (Melanthiaceae; 1C = 152.23 pg). The addition of this new record doubles the range of genome size values so far encountered in ferns from 97.2-fold (0.77-74.84 pg/1C) to 196-fold (0.77-150.61 pg/1C). This finding emphasizes the importance of filling taxonomic gaps in our knowledge to uncover the full extent of genome size diversity across the different lineages of land plants.