[ad_1]
Stay curious
Follow us !
Understanding the past of our Earth and its people is what scientists and archaeologists are trying to achieve. For this purpose, a lot of research is done, new species are found and today they are worms more than 40 000 years old that have been brought back to life. A promising discovery for the future
EXCEPTIONAL SURVIVORS
In the heart of Siberia, in permafrost, also called permafrost, were found two nematodes, roundworms, more than 40,000 years. It is a team of Russian researchers who is responsible for this exceptional discovery. Exceptional indeed because these worms, in addition to being old, came back to life after a few days spent in a petri dish at a temperature of 20 ° C and with food, which makes them the most old on Earth .
These two worms belong to the genera Panagrolaimus and Plectus and are the only two of the 300 nematodes from samples taken at 30 meters deep on the banks of the river Kolyma for the first 32 000 years, and 3.2 meters for the second on the banks of the Alazeya and 41 years old 700 years old. The results of this return to exceptional life were published in the journal Doklady Biological Sciences . Doubts about the age of the nematodes were emitted, thinking of the possibility of contamination of the samples by other more recent worms but they were quickly dismissed as the researchers say: " Nematodes do not are not known to dig so deep into the permafrost, the seasonal thawing being limited to 80 centimeters deep and the maximum thawing never exceeded 1.5 meters in roundness in 100,000 years at this location. "
PROMISING CAPACITY FOR THE FUTURE
Resuscitation of species from samples dating back thousands of years is not innovative because it has already been done in the past. 2000s on bacteria Bacillus on samplings 250 million years old, it is the first time that they are real animals which are reanimated after aut years ago, which tells us a lot about the exceptional capabilities of these nematodes.
Ancient studies have taught us that nematodes were able to withstand many years in the ice, in the absence of water, survive extreme temperatures ranging from -200 to 151 ° C but also withstand the space vacuum and high radiation levels. But these years of survival were counted by tens and not tens of thousands, which can give new avenues, by badyzing even more closely these organisms, to develop thereafter new methods of cryopreservation but also of cryopreservation which will be very useful for the Man in the years to come.
[ad_2]
Source link
