Fern from New Caledonia boasts world's largest genome

The New Caledonian fern, Tmesipteris oblanceolata, has more than 50 times more DNA packed into the nucleus of its cells than humans do.

Study co-author Ilia Leitch, a researcher at the UK's Royal Botanic Gardens Kew, told AFP that the team was"really surprised to find something even bigger than Paris japonica". Two members of the research team travelled to the main island, Grand Terre, in 2023 and worked with local scientists for the study, which was published in the journal iScience.The win by"this innocuous-looking" fern demonstrates that"record holders aren't always the showiest on the outside", Guinness World Records managing editor Adam Millward said.

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