A 160 Gbp fork fern genome shatters size record for eukaryotes

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 Paris japonica (148.89 Gbp/1C). Despite available data showing that giant genomes are restricted across the Tree of...

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Published in:iScience 2024-06, Vol.27 (6), p.109889, Article 109889
Main Authors: Fernández, Pol, Amice, Rémy, Bruy, David, Christenhusz, Maarten J.M., Leitch, Ilia J., Leitch, Andrew L., Pokorny, Lisa, Hidalgo, Oriane, Pellicer, Jaume
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Language:English
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Environmental Sciences
Plant evolution
Plant genetics
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creator Fernández, Pol
Amice, Rémy
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Pellicer, Jaume
description 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 Paris japonica (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 Tmesipteris oblanceolata, 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. [Display omitted] •Giant genomes are restricted across the eukaryotic Tree of Life•The genome of T. oblanceolata is over 50 times larger than the human genome•Genome size variation among eukaryotes expands over 61,000-fold Plant genetics; Plant evolution
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subjects Environmental Sciences
Plant evolution
Plant genetics
title A 160 Gbp fork fern genome shatters size record for eukaryotes
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