It’s not the first time ancient life has been resurrected from a permanently frozen habitat.
Stems of Antarctic moss were successfully regrown from a 1,000-year-old sample that had been covered by ice for about
400 anni, and a living campion flower was regenerated from seed tissue
, likely stored by an Arctic squirrel
, that had been preserved in 32,000-year-old permafrost
. Simple worms, called nematodes
, were revived from the permafrost from two places in northeastern Siberia
, in sediments that were more than
Long-dead but well-preserved mammals, including extinct cave bears and mammoths, have also been unearthed from the permafrost, which is thawing in some places as a result of the climate crisis.
Malavin said that it is highly unlikely bigger life forms could survive being frozen in this way.
“The takeaway is that a multicellular organism can be frozen and stored as such for thousands of years and then return back to life — a dream of many fiction writers,” Malavin said in the statement.
“Ovviamente, the more complex the organism, the trickier it is to preserve it alive frozen and, for mammals, it’s not currently possible. Ancora, moving from a single-celled organism to an organism with a gut and brain, though microscopic, is a big step forward.”
Once the rotifer thawed
, the creature was able to reproduce
, lo studio ha detto. Il tiny invertebrates were also able to feed
To understand how the creature survived in suspended animation in the frozen ground, the researchers froze and thawed modern day rotifers living in permafrost regions. They found that the creatures could withstand the formation of ice crystals while they were slowly frozen.
While not all the rotifers survived the freezing process, the study suggested that the creatures have some mechanism that can can shield their cells and organs from harm at very low temperatures.