Svetlana Yashina of the Institute of Cell Biophysics of the Russian Academy Of
Sciences, who led the regeneration effort, said the revived plant looked
very similar to its modern version, which still grows in the same area in
northeastern Siberia.
“It’s a very viable plant, and it adapts really well,” she told The
Associated Press in a telephone interview from the Russian town of Pushchino
where her lab is located.
She voiced hope the team could continue its work and regenerate more plant
species.
The Russian research team recovered the fruit after investigating dozens of
fossil burrows hidden in ice deposits on the right bank of the lower Kolyma
River in northeastern Siberia, the sediments dating back 30,000-32,000 years.
The sediments were firmly cemented together and often totally filled with ice,
making any water infiltration impossible – creating a natural freezing
chamber fully isolated from the surface.
“The squirrels dug the frozen ground to build their burrows, which are
about the size of a soccer ball, putting in hay first and then animal fur
for a perfect storage chamber,” said Stanislav Gubin, one of the
authors of the study, who spent years rummaging through the area for
squirrel burrows. “It’s a natural cryobank.”
The burrows were located 125 feet below the present surface in layers
containing bones of large mammals, such as mammoth, woolly rhinoceros,
bison, horse and deer.
The group says the study has demonstrated that tissue can survive ice
conservation for tens of thousands of years, opening the way to the possible
resurrection of Ice Age mammals.
“If we are lucky, we can find some frozen squirrel tissue,” Dr Gubin
told The Associated Press. “And this path could lead us all the way to
mammoth.”
Japanese scientists are already searching in the same area for mammoth
remains, but Dr Gubin voiced hope that the Russians will be the first to
find some frozen animal tissue that could be used for regeneration.
“It’s our land, we will try to get them first,” he said.
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