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:3/25/2017)... ... 2017 , ... Norland at Swissray is pleased to announce the release of the ... ELITE DXA has an active scan window, which is more than double that of existing ... scan area could not undergo an accurate total body bone density or body composition study. ...
(Date:3/24/2017)... New York, NY (PRWEB) , ... March 24, ... ... a global scale; from third world countries to hospitals in the United States, ... sparks a conversation on the current obstacles facing infection prevention and offers strategies ...
(Date:3/24/2017)... ... March 24, 2017 , ... Texas Physical Therapy Specialists (TexPTS) is pleased ... Huebner Road. The clinic is the group’s 7th location in San Antonio and 23rd ... PT, will provide care from the clinic, which opened March 22, 2017. ...
(Date:3/24/2017)... ... March 24, 2017 , ... ... its innovative EcoQube Frame vertical micro-veggies garden on Kickstarter . Surpassing the ... product – with nearly 2,000 consumers (and counting) already backing the campaign. ...
(Date:3/24/2017)... Westchester County, NY (PRWEB) , ... March 24, 2017 , ... ... in Somers and White Plains, N.Y., is pleased to announce Westchester resident Lauren C. ... as a law clerk for the firm, will concentrate her practice in elder law, ...
Breaking Medicine News(10 mins):
(Date:3/23/2017)... in St. Joseph, Missouri , has selected AccuReg to help standardize ... 22 cities, and its flagship St. Joseph Medical Center. Mosaic Life Care ... to its patients, including the insurance, billing and collections processes. ... ... Joseph Medical Center ...
(Date:3/23/2017)... , March 23, 2017  Transportation Insight, a multi-modal ... end-to-end supply chain management firm with expertise serving clients ... Solutions Rick Zaffarano was named a 2017 ... Supply Chain by the only publication exclusively dedicated to ... supply chain. "Rick has brought to Transportation ...
(Date:3/23/2017)... -- As a result of diagnostic technology increasing ... allergic diseases, cutting edge developments in targeted drugs ... in which pharmaceutical and biotech companies are addressing ... both a high quality meeting and a platform ... research scholars and doctors. The event will also ...
Breaking Medicine Technology: