HOME >> BIOLOGY >> NEWS
Frozen 'lake' beneath Antarctica ideal to test sterile drilling techniques

ntarctica and Greenland in search of exotic, deep-ice bacteria new to science. With a fluorescence microscope mounted inside the cold box, they can search for the faint light emitted by fluorescing bacteria.

"With the refrigerated microscope, we can catch any microbes trapped in liquid veins in their icy habitats," Price said. "This greatly reduces the possibility of contamination. If we just looked in melted ice, we wouldn't know where the bacteria had come from."

Price laid out his reasons for looking in frozen ice for unusual microbes in a paper in the February 1, 2000, issue of PNAS. He argued that ice-loving bacteria, or psychrophiles, could easily live in interconnecting veins of liquid water formed where three ice crystals intersect. Such microbes could survive for hundreds of thousands of years at a temperature just below freezing, metabolizing but probably not multiplying. They would have to endure darkness, 400 times the pressure at the surface, no oxygen, a starvation diet and probably a highly acidic or salty environment.

He estimated that colder ice as old as 400,000 years could still support one cell per cubic centimeter.

Drilling in Antarctic ice, including to within about 100 meters of Lake Vostok, has turned up some bacteria, according to Russian scientists, but all were known before. Bacteria also have been found in ocean ice. Price and other scientists hope to discover new species in solid ice, analogous to the novel thermophiles found in hot seafloor vents living at temperatures above the sea-level boiling point of water (100C or 212F).

All this makes it essential that drills not introduce bacteria into a new environment, whether a sub-glacial lake isolated for half a million years or the ice caps of Mars. No sterile drilling has ever been achieved, Price said, though some drilling under "aseptic" conditions has been claimed. Even the sterilization procedure taken before sending the Voyager spacecraft to M
'"/>

Contact: Robert Sanders
rls@pa.urel.berkeley.edu
510-643-6998
University of California - Berkeley
1-Jul-2002


Page: 1 2 3 4 5

Related biology news :

1. The Frozen Zoo: the University of New Orleans and the new world of saving endangered species
2. Frozen pictures allow far-reaching glimpse into the cells protein factory
3. Uncovering mysteries beneath the Earths surface
4. Search beneath lawns provides insight into backyard biodiversity
5. Research finds life 1000 feet beneath ocean floor
6. URI scientists study life buried deep beneath the ocean floor
7. First global-scale assessment of biodiversity beneath our feet
8. The Hunters Breath tells a story of adventure and discovery in Antarctica
9. A lost world: Two previously unknown dinosaurs discovered in Antarctica
10. Explanation offered for Antarcticas blood falls
11. Facing extreme ice conditions, coast guard, NSF deploy second icebreaker to Antarctica

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


(Date:1/26/2017)... , Jan. 26, 2017  Acuity Market Intelligence ... Biometrics and Digital Identity".  Acuity characterizes 2017 as ... when increased adoption reflects a new understanding of ... "Biometrics and digital identity are often perceived ... Maxine Most , Principal of Acuity Market intelligence. ...
(Date:1/24/2017)...  It sounds simple and harmless—an electronic sensor ... signs and alerts parents on their smart phones ... drops. But pediatric experts argue that such devices ... evidence of medical benefits, especially to healthy babies. ... parents of healthy babies, promising peace of mind ...
(Date:1/19/2017)... and PUNE, India , January 19, 2017 /PRNewswire/ ... titled, "Global Biometric Sensor Market, Opportunities and Forecast, 2014 - 2022," the ... at a CAGR of 9.6% from 2016 to 2022. In 2015, ... to high-level security for both public and private sectors. ... ...
Breaking Biology News(10 mins):
(Date:2/27/2017)... ... ... The Catalyst Midwest premix manufacturing facility has been certified as organic, ... label organic services. , The first organic product is Organic 18 Percent Layer Feed, ... Marketing, which owns the facility. , Catalyst already has received the Safe Feed/Safe ...
(Date:2/24/2017)... ... February 24, 2017 , ... A study recently ... in an ambulatory surgery center (ASC) with satisfactory clinical and patient-reported outcomes, when ... studies. , Jake Lubinski, president of AxioMed, commented on the recent publication, ...
(Date:2/24/2017)... Feb. 24, 2017 Provectus Biopharmaceuticals, Inc. ... "Company"), a clinical-stage oncology and dermatology biopharmaceutical company, ... to participate in its previously announced rights offering ... shares of common stock and Series C Convertible ... listed warrants. As previously announced, ...
(Date:2/24/2017)... Feb. 24, 2017  Driven by consumers, preference ... now the fastest growing categories, finds the recently ... in Personal Care: Multi-regional Market Analysis and Opportunities ... consulting firm Kline. "Biotechnology actives are ... them more effective for skin and hair care ...
Breaking Biology Technology:
Cached News: