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Mars Base

Back to life after 1,500 years: Moss brought back to life after 1,500 years frozen in i... - 0 views

www.sciencedaily.com/...140317125036.htm

scibyte124 moss

shared by Mars Base on 18 Mar 14 - No Cached
  • Researchers from the British Antarctic Survey and Reading University have demonstrated that, after over 1,500 years frozen in Antarctic ice, moss can come back to life and continue to grow
  • The team,
  • observed moss regeneration after at least 1,530 years frozen in permafrost
  • ...9 more annotations...
  • This is the first study to show such long-term survival in any plant; similar timescales have only been seen before in bacteria
  • Mosses are
  • the dominant plants over large areas and are a major storer of fixed carbon
  • The team took cores of moss from deep in a frozen moss bank in the Antarctic
  • This moss would already have been at least decades old when it was first frozen
  • in an incubator at a normal growth temperature and light level
  • After only a few weeks,
  • the moss began to grow
  • Using carbon dating, the team identified the moss to be at least 1,530 years of age, and possibly even older, at the depth where the new growth was seen.
Mars Base

Mosses frozen in time come back to life | Life | Science News - 0 views

www.sciencenews.org/...ozen_in_time_come_back_to_life

scibyte96 FrozenLife

shared by Mars Base on 28 May 13 - No Cached
  • After hundreds of years buried under ice, mosses can regrow
  • The revived plants come from Canada’s Ellesmere Island, where the Teardrop Glacier has retreated since the end of a cold period in 1550 to 1850 known as the Little Ice Age
  • On recently exposed ground
  • ...10 more annotations...
  • found clumps of mosses that looked dead. But among the brown tangles, the team noticed a few green sprigs
  • The team took brown moss samples back to the lab and used radiocarbon dating to determine that they had lived about 400 years ago
  • Based on the glacier’s retreat rate, the researchers estimated the plants had been uncovered for less than two years.
  • the team ground up some of the plants and gave them nutrients, water and light
  • From seven of 24 samples, a total of four moss species grew
  • The budding plants didn’t come from seeds or spores
  • In moss
  • any cell can be reset, almost like a stem cell, to grow a new plant
  • how long a moss cell can stay viable is “anyone’s guess,”
  • the findings suggest that the regenerated mosses may help repopulate ecosystems after glaciers retreat
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