Navigation Links
Research on carbon-consuming life-forms in Antarctica published in JoVE
Date:4/23/2012

Lake Bonney in Antarctica is perennially covered in ice. It is exposed to severe environmental stresses, including minimal nutrients, low temperatures, extreme shade, and, during the winter, 24-hour darkness. But, for the single-celled organisms that live there, the lake is home. To study them, Dr. Rachel Morgan-Kiss from the University of Miami, Ohio, and her team went to Antarctica to sample the ice-covered lake. The article describing her method will be published April 20, in the JoVE (the Journal of Visualized Experiments).

"Our laboratory has a focus on understanding adaptations in extreme environments," said Dr. Morgan-Kiss. "Ice-covered lakes are much simpler to study than typical aquatic environments because all of the organisms in the lake are microbial. They are at both the top and the bottom of the food chain."

Despite being microscopic, these organisms may play a big role in global climate change. Many of them have a mixotrophic metabolism, meaning that they survive either by fixing carbon, like plants, or by eating other protists (single-celled microbial eukaryotes). However, it's not known what causes these organisms to display one type of metabolism over another.

Moreover, it is not known how the climate effects this metabolic switch. If climate change causes more episodic weather events (like storms), nutrients will be stirred up from the bottom of lakes and oceans. This could have a huge impact on protist metabolism and climate change overall.

To help answer this question, Dr. Morgan-Kiss and her team took samples from different parts of the lake the top, middle, and bottom where the nutrient to sunlight ratios in the lake vary. The top gets plenty of sunlight, but there are few nutrients; the middle of the lake has moderate amounts of both; and the bottom gets little sunlight but is nutrient-rich.

"This interesting video-article produced by the JoVE Video team helps show e
'/>"/>

Contact: Neal Moawed
neal.moawed@jove.com
781-413-7281
The Journal of Visualized Experiments
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Wistar Institute researcher receives New Innovator award from NIH
2. NC State researchers get to root of parasite genome
3. White Mountain Research Station to host climate change conference
4. Stevens awarded $1M for advanced biofuels research
5. Researchers find animal with ability to survive climate change
6. Researchers find an essential gene for forming ears of corn
7. Researchers note differences between people and animals on calorie restriction
8. Researcher working on destruction of chemical weapons
9. Researchers study acoustic communication in deep-sea fish
10. Researchers discover that growing up too fast may mean dying young in honey bees
11. The Rett Syndrome Research Trust launches operations
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Research on carbon-consuming life-forms in Antarctica published in JoVE
(Date:7/23/2014)... news release is available in German . ... and stability to cells, drive metabolic processes and transmit ... complex three-dimensional shapes. Scientists at the Max Planck Institute ... proteins can be constructed of similar amino acid chains ... that the proteins that exist today arose from common ...
(Date:7/23/2014)... BioCatch, the global leader in ... has been named in Gartner,s Market Guide for Online ... well-known Magic Quadrant for Web Fraud Detection. ... several vendors to deliver passive biometric analysis and predicted, ... feature of at least 30% of one-stop fraud detection ...
(Date:7/23/2014)... clinical use of induced pluripotent stem cell (iPSC) ... hindered by the risk of dysregulated cell growth, ... use etoposide treatment to halt teratoma formation in ... acute myocardial infarction, is demonstrated in an article ... peer-reviewed journal from Mary Ann Liebert, Inc., publishers. ...
Breaking Biology News(10 mins):Protein evolution follows a modular principle 2BioCatch Featured in Gartner's 2014 Online Fraud Detection Market Guide 2BioCatch Featured in Gartner's 2014 Online Fraud Detection Market Guide 3
... January 2014 Scientists from the Montreal Neurological ... two genes linked to hereditary Parkinson,s disease are ... The protective mechanism, which is reported in T ... arise from oxidative stress from mitochondria., "PINK1 and ...
... 21, JoVE, the Journal of Visualized Experiments , ... explored one of the most intriguing research questions facing ... protocol, titled Conducting Miller-Urey Experiments, is comprised of a ... Dr. Stanley Miller and Dr. Harold Urey in 1953. ...
... viral pathogen that typically infects plants has been found ... Researchers working in the U.S. and Beijing, China report ... journal of the American Society for Microbiology. The ... "resulted in the serendipitous detection of Tobacco Ringspot Virus, ...
Cached Biology News:Quality control of mitochondria as a defense against disease 2A 21st century adaptation of the Miller-Urey origin of life experiments 2Pathogenic plant virus jumps to honeybees 2
(Date:7/23/2014)... 23, 2014 StemGenex® , the ... the US aimed at improving the lives of patients ... study for Parkinson’s disease. StemGenex believes that a ... therapy are paramount when providing care to patients with ... stem cell therapy accessible to the millions of individuals ...
(Date:7/23/2014)... 2014 /PRNewswire/ - BioAmber Inc. (NYSE: ... chemicals, today announced that the underwriters of its common ... purchase an additional 420,000 shares of common stock ... share, less underwriting discounts and commissions, in connection ... 2,800,000 shares of common stock, bringing the expected ...
(Date:7/23/2014)... , July 23, 2014  GrowBLOX Sciences, Inc. (OTCQB: ... that it is filing for two medical marijuana dispensary locations ... are in addition to the Clark County, Nevada ... special use permit, as previously announced.  GrowBLOX Sciences, ... be submitting two new applications for dispensaries in the ...
(Date:7/23/2014)... With the ability to record continuously at over ... 15 minutes, Fastec Imaging has brought the same ease-of-use of ... “Finally, a high speed camera that can be used as ... lives.” proclaims Matt Kearney, VP of Sales for Fastec Imaging. ... and simplify the traditionally complicated workflow of a high speed ...
Breaking Biology Technology:StemGenex® Gives Hope to Parkinson’s Patients through New Stem Cell Clinical Study 2StemGenex® Gives Hope to Parkinson’s Patients through New Stem Cell Clinical Study 3BioAmber announces exercise in full of underwriters' option in connection with previously priced follow-on offering 2BioAmber announces exercise in full of underwriters' option in connection with previously priced follow-on offering 3GrowBLOX Sciences, Inc. Files for Two Additional Medical Marijuana Dispensaries in Las Vegas 2GrowBLOX Sciences, Inc. Files for Two Additional Medical Marijuana Dispensaries in Las Vegas 3Fastec Imaging Introduces the First High Speed Camcorder 2Fastec Imaging Introduces the First High Speed Camcorder 3
... /PRNewswire-FirstCall/ - On August 20, 2008,Oncothyreon Inc. (Nasdaq: ... a,letter from The Nasdaq Stock Market indicating that (i) ... on The NASDAQ Global Market,because it did not meet ... other things, that the market value of,its common stock ...
... with international ... and technology companies, TORONTO, Sept. 17 Aurillion, a ... Moreno as its vice president of sales and marketing. In ... grow the company,s business throughout the Americas, Europe,and Asia. He ...
... 17 Sigma-Aldrich Corporation,(Nasdaq: SIAL ) will be ... Wednesday, September 24th at 8:30 AM ET at the ... via live audio broadcast over the,Internet available at ... this file. For the webcast on, http://ir.sigmaaldrich.com users ...
Cached Biology Technology:Oncothyreon announces receipt of NASDAQ letter regarding compliance with NASDAQ Global Market listing standards 2Oncothyreon announces receipt of NASDAQ letter regarding compliance with NASDAQ Global Market listing standards 3Guillermo Moreno Named Aurillion's Vice President of Sales and Marketing 2
... Roches RTS AviTag E. coli Biotinylation Kit, Linear ... 100 E. coli expression kits. (Cat. No. 3 ... reagents to rapidly generate linear expression constructs by ... based on a combination of T7 RNA polymerase ...
... (GR) Competitor Assay Kits are ideal for ... The PolarScreen GR Competitor Assay Kits contain ... and one of the following proprietary fluorescent ... GS Red (red assay kit), or GS ...
... E. coli Biotinylation Kit, Plasmid is designed for ... coli expression kits. (Cat. No. 3 186 148, ... provides vectors for the easy introduction of a ... protein can be enzymatically mono-biotinylated by E. coli ...
... Exiqons LNA technology enables sensitive, fast ... on intact chromosomes. Short hybridisation ... fixed cells and chromosome spreads Multiplex ... Pre-validated probes Probes available ...
Biology Products: