Navigation Links
Bacterial 'switch gene' regulates how oceans emit sulfur into atmosphere

Scientists have discovered a bacterial "switch gene" in two groups of microscopic plankton common in the oceans. The gene helps determine whether certain marine plankton convert a sulfur compound to one that rises into the atmosphere, where it can affect the earth's temperature, or remain in the sea, where it can be used as a nutrient.

"This new gene offers a powerful tool to study the question of how these plankton are involved with sulfur exchange between the ocean and atmosphere," said Mary Ann Moran, marine microbial ecologist at the University of Georgia. Moran and her colleagues published their findings in the Oct. 26, 2006, issue of the journal Science.

Much of the sulfur in the atmosphere comes from the surface of oceans, from a compound called dimethlysulfide, or DMS. Marine plankton control how much sulfur rises into the atmosphere by converting a compound called DMSP, or dimethylsulfoniopropionate, to DMS or to sulfur compounds that are not climatically active. Moran and her team discovered a gene that controls whether or not these sea drifters create DMS that rises into the air.

"Isolating and discovering a novel, keystone bacterium from the ocean first, and then sequencing its genome enabled this team to find the genes involved in the DMSP cycle," said Matthew Kane, program director in the National Science Foundation (NSF) Division of Molecular and Cellular Biosciences, which supported the research. "The research has revealed the previously hidden role that marine microbes play in the global sulfur cycle."

The researchers discovered that microscopic plankton that fall under the Roseobacter and SAR11 organism groups are the primary plankton involved in directing DMSP away from forming DMS, and thus making sulfur unavailable to atmospheric processes.

Dramatic advances in understanding how these plankton work have developed in the past few years with the availability of new genomic data. The scientists searched ge nome fragments of these plankton, looking for specific gene sequences that would show how the plankton use sulfur compounds.

"This breakthrough in the microbial physiology of DMSP metabolism opens the door to understanding the biology and ecology of this globally important process," said William Whitman, a microbiologist at the University of Georgia and co-author of the Science paper. The discovery of a bacterial gene switch in these two groups of plankton will open new areas of research, since DMSP synthesis may account for almost all marine-created atmospheric sulfur. The findings also expand knowledge of how these marine organisms are involved in the routing of carbon and sulfur into the microbial food web.


'"/>

Source:National Science Foundation


Related biology news :

1. UF Researchers Map Bacterial Proteins That Cause Tooth Loss
2. Bacterial genome sheds light on synthesizing cancer-fighting compounds
3. New insight into autoimmune disease: Bacterial infections promote recognition of self-glycolipids
4. Say what? Bacterial conversation stoppers
5. Bacterial protein mimics host to cripple defenses
6. Bacterial protein shows promise in treating intestinal parasites
7. Bacterial response to oxidation studied as toxin barometer
8. Bacterial walls come tumbling down
9. Scientists ID molecular switch in liver that triggers harmful effects of saturated and trans fats
10. A genes first kiss sets off that affair known as puberty
11. Scientists discover rare gene-for-gene interaction that helps bacteria kill their host
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/11/2017)... , Apr. 11, 2017 Research and Markets ... 2017-2021" report to their offering. ... The global eye tracking market to grow at a CAGR ... Global Eye Tracking Market 2017-2021, has been prepared based on an ... the market landscape and its growth prospects over the coming years. ...
(Date:4/6/2017)... April 6, 2017 Forecasts by ... Document Readers, by End-Use (Transportation & Logistics, Government & ... Gas & Fossil Generation Facility, Nuclear Power), Industrial, Retail, ... Are you looking for a definitive report ... ...
(Date:4/5/2017)... KEY FINDINGS The global market ... CAGR of 25.76% during the forecast period of 2017-2025. ... for the growth of the stem cell market. ... MARKET INSIGHTS The global stem cell market is segmented ... The stem cell market of the product is segmented ...
Breaking Biology News(10 mins):
(Date:10/9/2017)... , ... October 09, 2017 , ... ... four-tiered line of medical marijuana products targeting the needs of consumers who are ... of Kindred takes place in Phoenix, Arizona. , As operators of two successful ...
(Date:10/7/2017)... ... October 06, 2017 , ... ... and applications consulting for microscopy and surface analysis, Nanoscience Instruments is now ... Analytical offers a broad range of contract analysis services for advanced applications. ...
(Date:10/7/2017)... 6, 2017  The 2017 Nobel Prize in ... Jacques Dubochet, Joachim Frank and ... cryo-electron microscopy (cryo-EM) have helped to broaden ... biology community. The winners worked with systems manufactured ... produce highly resolved, three-dimensional images of protein structures ...
(Date:10/6/2017)... ... 2017 , ... On Tuesday, October 24th, ABC² (Accelerate Brain ... adaptive clinical trial for glioblastoma (GBM). The featured speaker will be Dr. Brian ... to the public, but registration is required. , WHAT: ABC² Brain Cancer ...
Breaking Biology Technology: