Researchers have successfully restored the worms that were in the Siberian permafrost in the frozen form for almost 42,000 years.
The Siberian permafrost is renowned for preserving the living being remaining of Pleistocene period, but this time it has set a new record. Scientist have successfully restored 2 worms who aged around 40,000 years that make them the oldest remaining discovered not only in the permafrost but on the planet as well as well as they are the first multicellular organism which has survived the cryobiosis for so long.
After collecting and studying over 300 samples of the deposits on permafrost, the team discovered that two of them have the viable samples of worms. One of the specimens is gathered from ground squirrel burrow, which has been radiocarbon in the earlier year and dated back 32,000 years. The another specimen was a drilled ice from deposit of glacier close by the Alazeya River, which dated back around 41,700 years old.
Scientists have stated that “Our information shows the capacity of multi-cellular beings to deal with cryobiosis for long-term under various situations of natural cryoconservation. It is quite common that this capacity shows that the nematodes of Pleistocene do posses some mechanism which helps them adapts according to the environment which could have the practical and scientific importance for the related science fields, like cryobiology, cryomedicine and astrobiology.”
The two worms that were discovered recently are both female and now become the oldest living being on the planet by a huge margin. This sort of cryobiosis was known to be functional among the single-cell organisms like amoeba and bacteria, and seeds of some sort of specific plants, which can survive after being frozen, but it is the first time that a multi-cellular organism shows the similar functionality and survived the cryobiosis for such long time.