1600亿碱基对的桫椤基因组打破了真核生物的基因组大小记录。
A 160 Gbp fork fern genome shatters size record for eukaryotes.
作者信息
Fernández Pol, Amice Rémy, Bruy David, Christenhusz Maarten J M, Leitch Ilia J, Leitch Andrew L, Pokorny Lisa, Hidalgo Oriane, Pellicer Jaume
机构信息
Institut Botànic de Barcelona (IBB), CSIC-CMCNB, Passeig del Migdia s.n, 08038 Barcelona, Spain.
Facultat de Farmàcia i Ciències de l'alimentació, Campus Diagonal, Universitat de Barcelona, Av. de Joan XXIII, 27-31, 08028 Barcelona, Spain.
出版信息
iScience. 2024 May 31;27(6):109889. doi: 10.1016/j.isci.2024.109889. eCollection 2024 Jun 21.
Vascular plants are exceptional among eukaryotes due to their outstanding genome size diversity which ranges ∼2,400-fold, including the largest genome so far recorded in the angiosperm (148.89 Gbp/1C). Despite available data showing that giant genomes are restricted across the Tree of Life, the biological limits to genome size expansion remain to be established. Here, we report the discovery of an even larger eukaryotic genome in , a New Caledonian fork fern. At 160.45 Gbp/1C, this record-breaking genome challenges current understanding and opens new avenues to explore the evolutionary dynamics of genomic gigantism.
维管植物在真核生物中十分独特，因为它们具有显著的基因组大小多样性，范围约为2400倍，其中包括迄今为止被子植物中记录到的最大基因组（148.89 Gbp/1C）。尽管现有数据表明巨大基因组在生命之树中分布有限，但基因组大小扩展的生物学极限仍有待确定。在此，我们报告在一种新喀里多尼亚叉蕨中发现了一个更大的真核生物基因组。该基因组大小为160.45 Gbp/1C，这一破纪录的基因组挑战了当前的认知，并为探索基因组巨大化的进化动态开辟了新途径。
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