Scientists have resurrected the old plant of the Siberian permafrost


23/02/2012

Russian scientists managed to grow campion uzkolistuyu fabric of its immature fruits that have lain thirty thousand years in the permafrost of the Siberian tundra. This is the first successful experience of resurrection plants from almost dead tissue of its fruit. Thus, campion now is the most ancient of all multicellular organisms living on Earth.

Plant species Silene stenophylla, with white lace flowers to bear fruit with a very viable seeds. "This is a very interesting fact," - said Jane Shen-Miller (Jane Shen-Miller) biologist at the University of California, which was not included in the analysis. "Textile plants were viable even after 30,000 years."

Sheni-Miller is the head of an earlier project, in which were sown and grown lotus seeds, native to northern China 1,300 years ago. Another group of researchers in 2005 raised a palm seeds Israeli antiquity of 2000 years, which were considered until now the oldest seeds.

In the current analysis, published in the electronic version of the magazine National Academy of Sciences, researchers from the Russian Academy of Sciences did not sow the seeds in order to revive the plant, which existed thousands of years ago, they used the fabric of his unripe fruit, and cultured in a medium saturated with its nutrients. Tissue cells of these fruits tend to turn into all parts of the plants, by growing cells to the seedlings, the researchers transplanted them in ordinary soil.

Unripe fruits campion uzkolistoy were discovered by researchers in the north-eastern part of Siberia near the Kolyma River at a depth of almost 40 meters of permafrost in the fossilized burrows of animals. Small polar animals such as squirrels hid tens of thousands of seeds and fruits in their holes, covering them with fur and dry grass, which served as a great storage.

Radiocarbon analysis of the reduced fetal tissue showed that the age of the plant is approximately 28000-32000 years. (This method of determining the age of the material is based on the record of destruction of its radioactive carbon.) "This plant has a lot of built-in mechanisms for survival in a harsh environment," - said Shen-Miller Agency LiveScience. The seeds of many species of plants die within a few years, as noted biologist. But there are some special species of plants, including the 1,300-year-old lotus and S. stenophylla, which contain a built-in mechanisms that preserve or repair damage to the DNA of plants.

"As of today - this is a marvelous example of the incredible longevity of higher plants" - said Shen-Miller.

According to scientists, permafrost, which covers 20 percent of Earth’s surface, serves as a so-called "time capsules" that preserves ancient organisms. Russian biologists intend to continue their research in this area in order to "resurrect" a variety of other organisms that survived in the permafrost, which are prehistoric gene set, as this will let you know more details about the evolution of life on Earth.

Original: LiveScience


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