Palaeomicrobiology - Scientists revive germs from the period of the dinosaurs | Science & technologies

Magnified 101.5 Million-Year-Old Sediment Microbes

What they found within those early sediments were cells which, against all likelihood, were capable of creating new mobile and springing back to life. The sediments do not have the vitality essential to enable cells to maintain on their own, but researchers ended up still in a position to revive the communities.

It's a mystery how the microbes were able to survive the harsh conditions of their surroundings - and it's unclear just how long they can live.

'In the oldest sediment we've drilled, with the least amount of food, there are still living organisms, and they can wake up, grow and multiply'.

Scientists at the Japan Agency for Marine-Earth Science and Technology analyzed sediment samples found approximately 12,140 to 18,700 feet beneath the ocean surface in the South Pacific Gyre, a system of rotating currents located in the Pacific Ocean.

But, this part of the ocean is known to have the lowest productivity and fewest nutrients available that could drive the marine food web.

The cells were incubated and started dividing again after tens of thousands of millions of years of isolation. These microbes get trapped in this sediment. "We wanted to know how long the microbes could sustain their life in a near-absence of food".

Microbes extracted from deep sea sediments that settled during the age of the dinosaurs have been revived in the lab after eons spent in a dormant state.

Over a period of 68 days, the vast majority of the almost 7,000 cells rapidly responded to the new conditions, multiplying by four orders of magnitude - even in the oldest samples.

Via more experiments, researchers now hope to decide how the microbes had been ready to persist for thousands and thousands of several years.

© Provided by CBS News Researchers from the Japan Agency for Marine-Earth Science and Technology say microbes have survived under the sea floor for over 100 million years.

"We knew that there was life in deep sediments near continents where there is a lot of buried organic matter", URI Faculty of Oceanography professor and study co-author Steven D'Hondt said in the statement. When they had been accumulated, the deeper the samples were, the farther back the sediments settled.

In an interaction with AFP, lead author Yuki Morono said that when he found the microbes, he was skeptical whether the findings are a mistake or a failure in their experiment. This indicated that if sediment accumulation on the seafloor occurred at a slow rate of no more than a meter or two every million years, oxygen will be able to penetrate to layers below the seafloor.

The samples Dr Morono and Dr D'Hondt selected for assessment came from a put in the Pacific Ocean the place the sea bed is practically 6,000 metres beneath the area.



Other news