Navigation Links
University of Tennessee study: Unexpected microbes fighting harmful greenhouse gas
Date:11/21/2012

The environment has a more formidable opponent than carbon dioxide. Another greenhouse gas, nitrous oxide, is 300 times more potent and also destroys the ozone layer each time it is released into the atmosphere through agricultural practices, sewage treatment and fossil fuel combustion.

Luckily, nature has a larger army than previously thought combating this greenhouse gasaccording to a study by Frank Loeffler, University of Tennessee, KnoxvilleOak Ridge National Laboratory Governor's Chair for Microbiology, and his colleagues.

The findings are published in the Nov. 12 edition of the Proceedings of the National Academy of Sciences.

Scientists have long known about naturally occurring microorganisms called denitrifiers, which fight nitrous oxide by transforming it into harmless nitrogen gas. Loeffler and his team have now discovered that this ability also exists in many other groups of microorganisms, all of which consume nitrous oxide and potentially mitigate emissions.

The research team screened available microbial genomes encoding the enzyme systems that catalyze the reduction of the nitrous oxide to harmless nitrogen gas.

They discovered an unexpected broad distribution of this class of enzymes across different groups of microbes with the power to transform nitrous oxide to innocuous nitrogen gas. Within these groups, the enzymes were related yet evolutionarily distinct from those of the known denitrifiers. Microbes with this capability can be found in most, if not all, soils and sediments, indicating that a much larger microbial army contributes to nitrous oxide consumption.

"Before we did this study, there was an inconsistency in nitrous oxide emission predictions based on the known processes contributing to nitrous oxide consumption, suggesting the existence of an unaccounted nitrous oxide sink," said Loeffler. "The new findings potentially reconcile this discrepancy."

According to Loeffler, the discovery of this microbial diversity and its contributions to nitrous oxide consumption will allow the scientific community to advance its understanding of the ecological controls on global nitrous oxide emissions and to refine greenhouse gas cycle models.

"This will allow us to better describe and predict the consequences of human activities on ozone layer destruction and global warming," said Loeffler. "Our results imply that the analysis of the typical denitrifier populations provides an incomplete picture and is insufficient to account for or accurately predict the true nitrous oxide emissions."


'/>"/>
Contact: Whitney Heins
wheins@utk.edu
865-974-5460
University of Tennessee at Knoxville
Source:Eurekalert

Related medicine news :

1. Scientists at Mainz University identify inhibitor of myelin formation in the central nervous system
2. University of Pennsylvania Medicine receives National Institutes of Health grant to help local communities move forward after asbestos exposure
3. Allied Minds and The George Washington University partner to form LuxCath LLC
4. New era in metabolomics begins at University of Michigan
5. Umeå University hosts new World Health Organization Collaborating Centre
6. George Mason University researchers target breast cancer in 3 trials
7. Research prizes from the Carlsberg Foundation to researchers from University of Copenhagen
8. University of Houston India Studies Program presents Circuits of Empire: India as Metropole
9. Mercyhurst University presents new research on managing spinal injuries to NFL
10. NTU and University of Warwick boost brainpower in global neuroscience research
11. CDC funds Wayne State University research to understand, prevent teen dating violence
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... June 25, 2016 , ... Experts from ... at AcademyHealth’s Annual Research Meeting June 26-28, 2016, at the Hynes Convention Center ... care topics including advance care planning, healthcare costs and patient and family engagement. ...
(Date:6/25/2016)... FL (PRWEB) , ... June 25, 2016 , ... The temporary closing of Bruton Memorial ... Plant City Observer , brings up a new, often overlooked aspect of head lice: the ... closing for fumigation is not a common occurrence, but a necessary one in the event ...
(Date:6/25/2016)... ... , ... First Choice Emergency Room , the largest network of independent ... Director of its new Mesquite-Samuell Farm facility. , “We are pleased to announce ... Dr. James M. Muzzarelli, Executive Medical Director of First Choice Emergency Room. , ...
(Date:6/25/2016)... ... June 25, 2016 , ... Dr. Calvin Johnson has ... he has implemented orthobiologic procedures as a method for treating his patients. The ... first doctors to perform the treatment. Orthobiologics are substances that orthopaedic surgeons use ...
(Date:6/25/2016)... ... , ... Conventional wisdom preaches the benefits of moderation, whether it’s a matter ... bar too high can result in disappointment, perhaps even self-loathing. However, those who set ... , Research from PsychTests.com reveals that behind the tendency to set low ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)...  Guerbet announced today that it has been named ... . One of 12 suppliers to receive ... support of Premier members through exceptional local customer service ... to lower costs. ... outstanding customer service from Premier," says Massimo Carrara ...
(Date:6/23/2016)... , June 23, 2016 Research ... "Surgical Procedure Volumes: Global Analysis (United States, China, Japan, ... report to their offering. ... tool for healthcare business planners, provides surgical procedure volume ... surgery trends with an in-depth analysis of growth drivers ...
(Date:6/23/2016)... The Biotechnology industry might still ... great opportunities to investors. Stock-Callers.com assesses the recent performances ... XON ), Vertex Pharmaceuticals Inc. (NASDAQ: ... ARNA ), and Regeneron Pharmaceuticals Inc. (NASDAQ: ... your complimentary trade alerts at: http://stock-callers.com/registration ...
Breaking Medicine Technology: