BEIRUT

Living

Scientists regenerate plant 30,000 years later

WASHINGTON: Fruit seeds stored away by squirrels more than 30,000 years ago and found in Siberian permafrost have been regenerated into full-flowering plants by scientists in Russia, a new study has revealed.

The seeds of the herbaceous Silene Stenophylla plant, whose age was confirmed by radiocarbon dating at 31,800 years old, are far and away the most ancient plant material to have been brought back to life, said lead researchers Svetlana Yashina and David Gilichinsky of the Russian Academy of Sciences.

The previous record for viable regeneration of ancient flora was with 2,000-year-old date palm seeds near the Dead Sea.

The latest findings could be a landmark in research of ancient biological material, and highlight the importance of permafrost in the “search of an ancient genetic pool, that of pre-existing life, which hypothetically has long since vanished from the earth’s surface,” they wrote.

The study, to appear in Tuesday’s issue of Proceedings of the National Academy of Sciences, described the discovery of 70 squirrel hibernation burrows along the bank of the lower Kolyma river, in Russia’s northeast Siberia, which bore thousands of seed samples from various plants.

“All burrows were found at depths of 20-40 meters from the present day surface and located in layers containing bones of large mammals such as mammoth, woolly rhinoceros, bison, horse, deer and other representatives of fauna” from the Late Pleistocene Age.

Scientists were able to grow new specimens from such old plant material in large part because the burrows were quickly covered with ice, and then remained “continuously frozen and never thawed,” in effect preventing any permafrost degradation.

Failing to grow plants from mature S. Stenophylla seeds, the scientists turned to elements of the plants’ fruit, described as “placental tissue,” to grow regenerated whole plants.

 
A version of this article appeared in the print edition of The Daily Star on February 23, 2012, on page 12.

Recommended

Advertisement

Comments

Your feedback is important to us!

We invite all our readers to share with us their views and comments about this article.

Disclaimer: Comments submitted by third parties on this site are the sole responsibility of the individual(s) whose content is submitted. The Daily Star accepts no responsibility for the content of comment(s), including, without limitation, any error, omission or inaccuracy therein. Please note that your email address will NOT appear on the site.

Alert: If you are facing problems with posting comments, please note that you must verify your email with Disqus prior to posting a comment. follow this link to make sure your account meets the requirements. (http://bit.ly/vDisqus)

comments powered by Disqus

Advertisement

FOLLOW THIS ARTICLE

Interested in knowing more about this story?

Click here