HOME >> BIOLOGY >> NEWS
Dispute over life in Antarctic lake

t molecular biologist Sergey Bulat of the Petersburg Nuclear Physics Institute, Russia, has created a furore by questioning the accuracy of this research.

At last week's meeting of the Scientific Committee on Antarctic Research in Bremen, Germany, Bulat claimed that these microbes are contaminants. His team compiled a list of 80 microbes found in their lab and in the drill hole that could have contaminated the Vostok ice. All but three of the organisms discovered in the ice are on the list. "We find bacteria in the accretion ice, but can eliminate most of them using our contamination database," says Bulat. Other researchers say the decontamination techniques used on the core sample, which involve washing it and removing the outer layers, would be completely effective. Brent Christner of the Montana State University in Bozeman has even tested for kerosene and other markers to distinguish the outside from the inside of the core. He is confident the cells he has found are authentic lake microbes. "The numbers of microbes in the accretion ice are two to seven times as high as numbers in the overlying glacial ice," says Christner. "This indicates that the lake is a source of life. All the data points to the fact that there are microbes and they're alive." But Bulat disagrees. "We don't have different results, only a different interpretation," he says.

Others are impressed with Bulat's methods, but argue he is being too stringent. "His methods are so severe they might cut out things that could be in the lake," says Chris McKay, at NASA's Ames Research Center in Moffett Field, California. Yet others are reserving judgement on the issue. "Of course the ice core is contaminated," says David Karl of the University of Hawaii in Honolulu, whose 1999 analysis of Vostok accretion ice reported up to 300 cells per millilitre of ice (Science, vol 286, p 2144). "We dealt with that potential problem in our processing of the core," he says. "I stand by the data
'"/>

Contact: Claire Bowles
claire.bowles@rbi.co.uk
44-207-331-2751
New Scientist
4-Aug-2004


Page: 1 2 3 4 5

Related biology news :

1. Design competition for new Antarctic Research Station
2. The Hunters Breath tells a story of adventure and discovery in Antarctica
3. Antarctic fish study may aid cardiac research
4. A lost world: Two previously unknown dinosaurs discovered in Antarctica
5. Abandoned penguin colonies may help refine Antarctic climate studies
6. British Antarctic Survey wins environment award
7. Explanation offered for Antarcticas blood falls
8. Antarctic penguins thrive in ocean oases
9. Huge iceberg wreaks havoc on Antarctic marine ecosystem, study finds
10. Huge Antarctic iceberg makes a big splash on sea life
11. Antarctic animals are under threat from illegal fishing

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:1/30/2019)... YORK (PRWEB) , ... January ... ... nonprofit organization that identifies, counsels, and supports high-growth, high-impact life science and ... professionals representing 10 national nonprofit disease foundations and disease-focused venture funds to ...
(Date:1/25/2019)... ... January 24, 2019 , ... Review methodology could negatively ... states continue to grapple with prescription drug costs, a new Pioneer Institute ... should address before deciding whether to contract with the Institute for Clinical and ...
(Date:1/20/2019)... ... ... As the leader in 3D cell culture characterization and analysis, Visikol is now ... models. In an effort to build a consensus in the market, Visikol will be ... replicate these models for their internal research efforts. , Recently, researchers have begun ...
Breaking Biology News(10 mins):
(Date:2/12/2019)... ... February 12, 2019 , ... ... has finalized a deal to extend their use of Medrio, the leading provider ... 2023. The CRO has been a regular Medrio customer for over nine years, ...
(Date:2/2/2019)... ... February 01, 2019 , ... Biomatlante, a world leader in ... CEO, Julien Dert, being effective on February 1st, 2019. , Graduated from ICN ... in which more than 12 years in the Medical Device industry. Chief Financial ...
(Date:1/30/2019)... , ... January 29, 2019 , ... K&R Negotiations announced ... expert at a special online event titled: Six Ways to Shorten the Sales ... time, February 13, 2019 on the BrightTALK network. , Negotiation expert Kresic will ...
(Date:1/28/2019)... ... January 28, 2019 , ... Fragment-based lead discovery (FBLD) involves ... early stage, false positives can be problematic due to high levels of solvents ... techniques are highly sensitive to detect weak interactions. Nanomed , leading producer ...
Breaking Biology Technology:
Cached News: