Amazing stuff! What do some plants need all this DNA for?
From New Caledonia, which has been in the news lately for riots against France.
"... Coming in at more than 100 meters of unraveled DNA, the New Caledonian fork fern species Tmesipteris oblanceolata was found to contain more than 50 times more DNA than humans and has dethroned the Japanese flowering plant species Paris japonica, which has held this record since 2010. ...
T. oblanceolata is a rare species of fern found on the island nation of New Caledonia, an overseas French territory situated in the Southwest Pacific, about 750 miles east of Australia ..."
T. oblanceolata is a rare species of fern found on the island nation of New Caledonia, an overseas French territory situated in the Southwest Pacific, about 750 miles east of Australia ..."
From the highlights and abstract:
"Highlights
• 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
Summary
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."
Record breaker: This tiny fern has the largest genome of any organism on Earth (original news release)
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